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competition-stego-media

Detect and extract hidden data from media containers in forensic workflows.

4|Updated Apr 9, 2026
Search Tags:#steganography#forensics#stego#evidence-packaging#media-analysis#container-inspection#payload-recovery
One-click install
npx skills add https://github.com/xjtu-wang/DigAgent --skill competition-stego-media
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: competition-stego-media
Source: https://github.com/xjtu-wang/DigAgent/tree/main/.agents/skills/competition-stego-media
Command: npx skills add https://github.com/xjtu-wang/DigAgent --skill competition-stego-media

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps forensic teams and security analysts inspect media containers and embedded payloads for hidden channels, steganography, or appended data after a sandbox is established.

Core Features & Use Cases

  • Establish container truth by inspecting headers, chunk tables, EXIF or document metadata, container indexes, and size anomalies.
  • Inspect candidate channels (alpha, palette, LSBs, frame deltas, or document streams) and preserve each extraction step for reproducibility.
  • Read reference guidelines to ensure safe, thorough analysis in investigative or CTF workflows.

Quick Start

Confirm the real container type, dimensions, duration, codec, and chunk layout before guessing a hidden layer.

Frequently Asked Questions about competition-stego-media

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I detect hidden data in media containers during forensic analysis?▼

To detect hidden data in media containers, inspect headers, chunk tables, EXIF metadata, and size anomalies to establish container truth before examining candidate channels like alpha layers, palettes, or LSBs.

What is the best way to extract steganography payloads from media files?▼

Extracting steganography payloads requires inspecting candidate channels such as frame deltas, document streams, or LSBs, and preserving each extraction step to maintain a reproducible chain for forensic investigations.

Do I need a sandbox environment to inspect media files for covert channels?▼

Yes, inspecting media files for covert channels requires a defined sandbox context established by the orchestrator to safely examine container indexes, appended payloads, and metadata gaps.

Can I analyze appended payloads and metadata gaps in CTF media challenges?▼

Yes, you can analyze appended payloads and metadata gaps in CTF-style sandbox workflows by confirming the real container type, dimensions, codec, and chunk layout before extracting hidden layers.

Why should I verify container truth before extracting hidden data from media?▼

Verifying container truth identifies real file types, dimensions, duration, codec, and chunk layout, preventing misinterpretation of structural anomalies as hidden data during forensic media analysis.

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