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Level 3-7. It' small program written in assembler but code is highly obfuscated, hardly readable and full of anti-tricks. No heavy cryptography. Key generation procedure is trivial.

Your task is to fight the way to the check procedure, write keyfile generator and brief tutorial. No patching nor bruting. Tested on Win XP SP3.

Difficulty: 4 - Needs special knowledge
Platform: Windows
Language: Assembler

Published: 20. Jul, 2010
Downloads: 329


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Solution by simonzack, published 22. jul, 2010; download (3 kb), password: or browse.

simonzack has rated this crackme as quite nice.

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Discussion and comments

22. Jul 2010
That was fast, nice work simonzack, congrats

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