CTF Exclusive

Hi — I’m Kaustubh Shivarkar.
This repo is my personal collection of CTF writeups, scripts, and notes. I publish short, practical solutions here as I solve challenges. Contributions and collaboration are welcome!

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About

• Owner: Kaustubh Shivarkar
• Purpose: Central place for my CTF work across platforms (picoCTF, TryHackMe, HackTheBox, etc.).
• Current platform: PICOCTF/
  • General Skills/ — misc puzzles, forensics, stego, etc.
  • Web Exploitation/ — web challenges and notes
• Planned: Add Cryptography, Reverse Engineering, and other categories/platforms later.

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Repo structure

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How I use this repo

1. Solve a challenge on a platform (e.g., picoCTF).
2. Add a short writeup file under the appropriate folder:
   • Filename suggestion: YYYY-MM-DD-challenge-name.md or challenge-name.md.
   • Keep it concise: problem summary, key steps, final command/script, and flag (optional).
3. Put any scripts in a scripts/ subfolder inside the challenge folder.
4. Commit & push with a clear message, e.g.:

git add . git commit -m "solved(picoCTF): web-exploitation - " git push origin main

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Challenge:

• Platform: picoCTF
• Category: Web Exploitation / General Skills
• Date: YYYY-MM-DD
• Link:
• Flag: picoCTF{...} (optional)

Problem

Short summary of the prompt.

Approach / Steps

1. Observation / first step
2. Next steps and commands

Final exploit / script

Commands or link to scripts/<script-name>

Notes

Lessons learned, follow-ups, references

Contributing

• Pull requests are welcome — add writeups, fix typos, or add scripts.
• Follow the folder structure and use concise commit messages.
• Found an error? Open an issue or submit a small PR.