crackmes.one

howosec's Not to simple KeyGen V2

Author:
howosec

Language:
C/C++

Upload:
2026-02-27 19:45

Platform:
Unix/linux etc.

Difficulty:
3.0

Quality:
4.0

Arch:
x86-64

Downloads:
20

Size:
800.64 KB

Writeups:
1

Comments:
2

Description

This CTF is a KeyGen crackme, your trial is to write a valid keyGen function Features - Serial based in inputs - High-level custom-hashing - Custom over-xor-like encoding - GCC "Obfuscation" flags - Big binary, hard to analyze - Haven't hard-coded strings at all - Complex main function in IDA Map How to solve? I'll not say that, try by yourself. If you got it, you should write a write-up!