How to write a CrackMe for a CTF competition

07/01/2017 21:20 PELock#1
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.

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.

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