$ ctf42

#prng-prediction CTF challenges

6 CTF challenges using prng-prediction from 6 CTFs (2019–2025), 6 with writeups. Mostly Reverse (33%) and Crypto (33%).

Reverse · 2 Crypto · 2 Pwn · 2

Often combined with

#minesweeper 1 #reversing 1 #rand-seed 1 #golang 1 #srand-time-seed 1 #srand-time-seed-bruteforce 1

Challenges

Filter and sort these in the challenge browser →

Challenge CTF Weight Category Has
haySTACK CSAW 2021 Quals 20.54 Pwn files wu 2
MineGame DaVinciCTF 2022 24.50 Reverse files wu 2
seed-sPRiNG picoCTF 2019 – Pwn files wu 1
Numbers_Game SunshineCTF 2025 51.65 Reverse files wu 1
casino2 TetCTF 2023 53.89 Crypto files wu 1
FryingInMotion Dragon 2020 98.00 Crypto files wu 1