Crackmes

Author:
vulnix

Language:
C/C++

Upload:
8:20 AM 04/12/2025

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Platform
Unix/linux etc.

Difficulty:
1.8

Quality:
4.6

Arch:
x86-64

Description

This is a simple CrackMe for Linux x86_64. The goal is to find the correct serial that allows access. No packers or anti-debug tricks are used. Compiled with GCC. Enjoy and good luck :)

Comments
Solutions

beard on 1:42 PM 04/12/2025: How can I unzip the file

Abh0rrent on 6:00 AM 04/13/2025: Fun little crackme serial = "LiZTeETf"

Elvis on 1:01 PM 04/13/2025: @beard: Try password "crackmes.one"

prangan on 10:43 AM 04/15/2025: The Zip password is:- crackmes.one The correct serial is = LiZTeETf

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Solution by josuarefrain:
install angr: `pip install angr` run solve: `python solve.py`

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Solution by xMaut:
I solved it by creating a program; the code is in the writeup. spanish wrieup: https://github.com/0xGerard/crackmes-solutions/blob/main/easyjerk/writeup.md

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Solution by lizardswimmer:
Nice clean little binary. Solved with Ghidra and Python by finding the encoded array, and the transform function. Wrote a naive python script to re-implement the transform function, and brute force individual bytes of the serial.

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Solution by preheated2121:
Decompile with IDA, recreate functions in python3 with Z3 solver, run Z3 solver.

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crackmes.one

vulnix's easyjerk