CTF Writeup Generator - OpenClaw Skill

A professional skill for OpenClaw that automatically generates structured CTF writeups from solving sessions.

Features

• 🎯 Automatic Flag Detection: Recognizes common CTF flag formats (CTF{}, HTB{}, SHAASTRA{}, etc.)
• 📂 Smart Categorization: Auto-categorizes challenges (Web, Binary, Crypto, Forensics, etc.)
• 📝 Professional Formatting: Generates markdown with proper syntax highlighting
• 🛠️ Tool Recognition: Identifies and documents tools used during the solve
• 🎨 Multiple Templates: Academic, speedrun, tutorial, and portfolio styles
• 📤 Export Options: Markdown, PDF, HTML formats

Installation

Via ClawHub (Recommended)

# Install globally
npm install -g clawhub

# Install the skill
clawhub install ctf-writeup-generator

Manual Installation

1. Clone or download this skill directory
2. Copy to your OpenClaw skills folder:

   cp -r ctf-writeup-generator ~/.openclaw/skills/
   

3. Restart OpenClaw or reload skills

Usage

Simply ask your OpenClaw agent to generate a writeup:

"Generate a CTF writeup for the Binary Bash challenge I just solved"
"Create a writeup for this web exploitation challenge"
"Document my forensics challenge solution"

Example Conversation

You: I just solved a buffer overflow challenge called "Stack Smasher" from HackTheBox. I used gdb and python to craft the exploit. The flag was HTB{st4ck_sm4sh1ng_fun}. Can you create a writeup?

OpenClaw:

• Asks for additional details (exact steps, tools, payloads)
• Generates a professional writeup with:
  • Challenge metadata
  • Step-by-step solution
  • Code blocks with syntax highlighting
  • Tools documentation
  • Learning takeaways
• Saves to hackthebox_stack-smasher_writeup.md

Configuration

Set environment variables for personalization:

# In your shell config (~/.bashrc, ~/.zshrc, etc.)
export CTF_AUTHOR="akm626"
export CTF_PLATFORM="HackTheBox"
export CTF_WRITEUP_STYLE="tutorial"
export CTF_AUTO_SCREENSHOTS=false

Platform Support

Supports writeup generation for:

• HackTheBox (HTB)
• TryHackMe (THM)
• OffSec (OSCP, OSWP, etc.)
• PicoCTF
• CTFtime competitions
• Custom platforms (just specify the name)

Flag Formats Supported

• Standard: CTF{...}, FLAG{...}, flag{...}
• HackTheBox: HTB{...}
• TryHackMe: THM{...}
• Shaastra: SHAASTRA{...}, Shaastra{...}
• picoCTF: picoCTF{...}
• Custom formats (configurable via regex)

Challenge Categories

Automatically detects:

• Web Exploitation
• Binary Exploitation
• Reverse Engineering
• Cryptography
• Forensics (Digital, Memory, Network)
• OSINT
• PWN
• Miscellaneous

Output Structure

Generated writeups include:

1. Header: Challenge name, author, date, category, difficulty
2. Summary: Brief overview
3. Challenge Description: Original prompt
4. Reconnaissance: Initial enumeration
5. Solution: Step-by-step walkthrough with code blocks
6. Tools Used: Documented toolchain
7. Flag: Properly formatted flag
8. Key Takeaways: Learning points
9. References: Additional resources

Advanced Usage

Multi-Challenge Writeups

"Generate a writeup covering all 3 crypto challenges from today's CTF"

Different Formats

"Create a speedrun-style writeup for this challenge"
"Generate an academic writeup with detailed explanations"
"Make a portfolio writeup for my GitHub"

Export to PDF

"Generate a writeup and export it to PDF"

Tips for Best Results

1. Provide detailed notes: Include commands, outputs, and observations
2. Mention dead-ends: Document what didn't work and why
3. Include context: Platform, CTF name, time spent
4. Reference tools: Name specific tools and versions used
5. Add insights: Your unique methodology and thought process

Security & Ethics

• ⚠️ Never include real credentials or API keys
• ⚠️ Respect competition rules (don't publish during active CTFs)
• ⚠️ Add spoiler warnings for recent challenges
• ⚠️ Verify flag sharing is allowed by the platform
• ⚠️ Sanitize paths that reveal sensitive system info

Dependencies

Required: None (works out of the box)

Optional (for enhanced features):

• pandoc: PDF export
• pygments: Enhanced syntax highlighting

Install optional dependencies:

# Ubuntu/Debian
sudo apt install pandoc python3-pygments

# macOS
brew install pandoc
pip3 install pygments

Contributing

Contributions welcome! Areas for improvement:

• New flag format patterns
• Platform-specific templates
• Enhanced categorization logic
• Export format options
• Integration with other tools

Example Output

See example_writeup.md for a full example of generated output.

Troubleshooting

Issue: Skill not loading

• Check ~/.openclaw/skills/ctf-writeup-generator/SKILL.md exists
• Restart OpenClaw
• Check logs for errors

Issue: Flag not detected

• Ensure flag format matches platform conventions
• Check for typos in flag
• Manually specify flag format if non-standard

Issue: Wrong category assigned

• Provide more context in your solving description
• Manually specify category if needed
• Update categorization keywords

License

MIT License - Free to use and modify

Author

Created by a cybersecurity enthusiast for the CTF community.

Maintained by: [Your GitHub username]

Version History

• 1.0.0 (2026-02-08): Initial release
  • Basic writeup generation
  • Flag format detection
  • Multiple platform support
  • Markdown export

Links

• OpenClaw Documentation
• ClawHub Registry
• Report Issues

Acknowledgments

Built for the cybersecurity education and CTF community. Special thanks to:

• OpenClaw contributors
• CTF platform creators (HTB, THM, OffSec, etc.)
• The security research community

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Star this skill on ClawHub if you find it useful! ⭐