crackmes.one

Zextey's Password Checker

Author:
Zextey

Language:
.NET

Upload:
2026-07-25 13:14

Platform:
Windows

Difficulty:
6.0

Quality:
4.0

Arch:
x86-64

Downloads:
6

Size:
1.43 MB

Writeups:
0

Comments:
0

Description

Cindermark Cipher Password Checker Crackme A simple password checker built to stress-test my private commercial .NET obfuscator, Cindermark Cipher. The binary is wrapped in multiple stacked protection layers, including two independent custom virtual machines with their own instruction sets and encrypted bytecode, plus renaming, string encryption, control-flow obfuscation, and anti-tamper checks tied directly into the VM decode path. The password follows the format XXXX-XXXX-XXXX-XXXX and is statically encrypted inside the file — no network calls, no external dependencies. Goal: recover the password and get the checker to accept it. Consider this a direct challenge to the reverse engineering community, I believe it's unbreakable in its current form. Good luck to anyone who takes it on, I'd genuinely like to see how far you get.

Labels ?

Anti-debugging String / data encryption XOR AES (encryption) Self-modifying / runtime decrypt Crypto / hash algorithm Code virtualization / VM Control-flow obfuscation Anti-disassembly Anti-tamper / integrity Import / API obfuscation Custom / generic obfuscation Anti-VM / sandbox