Writeup – GPN CTF 2025: Paranoid
LCG break via Babai's algorithm into nonce-reuse attack.
Crypto
Writeup - Deutsche Hacking Meisterschaft 2024: Cute Big Cats
Exploiting CBC-mode encryption and messy JSON parsers
Writeup - UMDCTF 2024: TripleDES
Padding oracle with extra steps?
Writeup - UMDCTF 2024: PaddingOracle
A classical Padding Oracle attack