Platform

picoCTF

Free educational CTF run by Carnegie Mellon. The picoGym hosts every past challenge.

Writeups

picoCTF/Mod 26·10pts

ROT-13 the ciphertext — the title is a hint.

Cryptoeasy#beginner #crypto #caesarMay 16, 2026

picoCTF/Obedient Cat·5pts

A friendly first challenge, solved in one line.

Misceasy#beginner #linuxMay 16, 2026