CTF-Writeups

Mārtiņa-CTF 2025 (MCTF25)

MCTF25 - Mārtiņa-CTF 2025
Personal writeups for Mārtiņa-CTF 2025. Mostly blockchain and web, with some forensics and misc.
First CTF
Per-challenge writeups
Tech: Python · Solidity · Web
Audio / Web Blockchain Blockchain / Forensics Crypto Forensics Misc / Fun Pwn / Docker Web

Audio / Web

Challenge Writeup
Astral Pulses
README
AI Translator
README

Blockchain

Challenge Writeup
Guess The Number
README
Magical RPC Button
README
Unlimited Void
README
Where Did I Leave My Flag
README

Blockchain / Forensics

Challenge Writeup
Titanium Safe
README
Sacred Martins Sequence
README
Sepolia Heist
README

Crypto

Challenge Writeup
Radical Security Animal
README

Forensics

Challenge Writeup
Rewritten History
README

Misc / Fun

Challenge Writeup
A series of tubes
README
Jokemartins
README

Pwn / Docker

Challenge Writeup
ImgSharer
README
Docker, I barely know her!
README

Web

Challenge Writeup
Gatekeeper
README
Homemade task system
README
Homemade task system 2
README
Homemade task system 3
README
not!Windows registry
README
Parent Security
README

Notes

All writeups are post-CTF, with access to challenge files.

I try to keep:

If you spot a mistake or have a cleaner solve, open an issue or PR in ANormalStick/CTF-Writeups.