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steganography-techniques

Detect and extract hidden steganographic payloads from images, audio, files, and text.

5|2|Updated May 16, 2026
Search Tags:#metadata#steganography#forensics#image-analysis#password-cracking#malware-evasion#embedded-data
One-click install
npx skills add https://github.com/DorianGallo/hack-skills-local --skill steganography-techniques-doriangallo
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: steganography-techniques
Source: https://github.com/DorianGallo/hack-skills-local/tree/main/skills/steganography-techniques
Command: npx skills add https://github.com/DorianGallo/hack-skills-local --skill steganography-techniques-doriangallo

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) and assets (resource) components.

What problem does it solve?

Hidden information in images, audio, files, or text is often missed by basic analysis, leading to slow investigations and incomplete evidence.

Core Features & Use Cases

  • End-to-end stego triage: identify likely carrier types (images/audio/files/text) and route to the right extraction approach based on structure and metadata signals.
  • Image-focused extraction: analyze PNG, JPEG, and GIF using targeted techniques like LSB scanning, PNG chunk inspection, JPEG metadata/thumbnail checks, and appended-data carving.
  • Cross-media workflows: decode audio steganography via spectrogram patterns and DTMF/Morse/SSTV, and recover file/text hidden payloads using whitespace/zero-width/homoglyph methods.
  • Tool-guided investigation: provides practical commands and a decision tree that matches tool outputs to subsequent next steps, including password-protected cases.

Quick Start

Use the steganography-techniques skill to triage the attached file 'suspect.png' by extracting metadata and scanning for LSB and embedded payloads, then continue using the decision tree until hidden content is recovered.

Frequently Asked Questions about steganography-techniques

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

FAQPage Schema
How do I detect hidden steganographic payloads in images and audio during a security investigation?▼

Detect hidden steganographic payloads by performing structured triage across PNG, JPEG, GIF, audio, and text channels, using LSB scanning, metadata checks, and appended-data carving to extract embedded content.

What is the best way to extract hidden data from a PNG file for CTF challenges?▼

Extract hidden data from PNG files by inspecting PNG chunks, scanning for LSB patterns, and carving appended data, routing extraction based on structural metadata signals and format-specific analysis.

How does password-protected steganography extraction work when analyzing malware evasion techniques?▼

Password-protected steganography extraction uses a tool-guided decision tree that matches tool outputs to subsequent next steps, applying password-aware extraction paths to recover hidden payloads.

Can I decode audio steganography using spectrogram patterns, DTMF, Morse, and SSTV analysis?▼

Decode audio steganography by analyzing spectrogram patterns, DTMF signals, Morse code, and SSTV formats as part of cross-media workflows to recover hidden payloads embedded in audio carriers.

What techniques recover hidden text payloads using whitespace, zero-width characters, and homoglyphs?▼

Recover hidden text payloads by detecting and decoding whitespace patterns, zero-width characters, and homoglyph substitutions embedded within text artifacts during file and text analysis.

Does steganography triage support JPEG metadata and thumbnail checks for embedded data detection?▼

Steganography triage supports JPEG analysis by performing targeted JPEG metadata inspection and thumbnail checks alongside appended-data carving to identify embedded steganographic payloads.

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