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How to write a CrackMe for a CTF competition

Bartosz Wójcik
Bartosz Wójcik
in Reverse Engineering Articles

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Posted

With the growing popularity of CTF (capture the flag) competitions, and the excellent performance of Polish teams like Dragon Sector in this area, I thought it would be interesting to demonstrate the construction of a simple CrackMe, using some creative techniques which make it difficult to crack and analyse.

crackme-z3s.png

If you have ever been curious about reverse engineering, entered a CTF competition, or wanted to create your own CrackMe and drive other contestants crazy, this article is for you.

https://www.pelock.com/articles/how-to-write-a-crackme-for-a-ctf-competition

Sources at GitHub with english comments

https://github.com/PELock/CrackMeZ3S-CTF-CrackMe-Tutorial

Edited by Bartosz Wójcik
github

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