2025

CryptoCat's capture the flag challenge writeups, solve scripts and video walkthroughs 💜

K17

• Rev: Secure Exam Browser

• Rev: Bait and Switch

DefCamp

• Pwn: Nulle

Imaginary (iCTF)

• Rev: Nimrod

• Rev: Comparing

• Rev: Weird App

• Rev: Stacked

HackTheAgent (HackAICon)

• AI: LLM Hacking (levels 1-5)

WHY

• Web: Shoe Shop

• Web: Planets

• Web: Buster

• Web: Why2025 CTF Time

• Web: Why2025 Planner

• Web: Fancy Login Form

N0PS

• Web: Press Me If U Can

NahamCon

• Web: SNAD

• Web: Infinite Queue

• Web: TMCB

• Web: Method in the Madness

• Web: No Sequel

• Web: Advanced Screening

• Web: My First CTF

• Web: My Second CTF

• Web: My Third CTF

• Web: The Mission

Tsuku

• Web: len_len

• Web: Flash

• Web: YAMLwaf

CIT

• Web: Breaking Authentication

• Web: Commit & Order: Version Control Unit

• Web: How I Parsed your JSON

• Web: Mr. Chatbot

• Web: Keeping Up with the Credentials