$ ctf42

#mt19937 CTF challenges

5 CTF challenges using mt19937 from 3 CTFs (2021–2024), 5 with writeups.

Crypto · 5

Often combined with

#state-recovery 2 #lattice 1 #biased-nonce 1 #ecdsa 1 #prng-seed-bruteforce 1 #float-prediction 1 #untwist 1 #seed-recovery 1

Challenges

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Challenge CTF Weight Category Has
Limited_1 WolvCTF 2024 35.25 Crypto files wu 3
twist_and_shout Zh3r0 2021 – Crypto files src wu 2
real_mersenne Zh3r0 2021 – Crypto files src wu 2
janken_vs_kurenaif SECCON 2022 Quals 97.90 Crypto files wu 1
Sign_Wars SECCON 2021 – Crypto files wu 1