VSEC KeygenMe #2

VSEC KeygenMe #2

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In this update we have :
1. internal code virtualization & obfuscation
2. complex arithmetic calculations

What you have to do:

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1.Reverse it.
2.Find Key Generation algorithm 
3.Write your keygen 
4.Maybe write some detail about what you have done

I hope peoples who interested in Reverse Engineering learns something from this type of challenges.

Best Regards.
 

File Information

Submitter Gladiator

Submitted 02/07/2025

Category KeygenMe

View File

Very strange,something like self-modifying code,hard to follow

I cannot even see where wrong key gets displayed,very unique and strong

Edited February 8Feb 8 by freddy

Nothing really strange,the so called "self-modifying code" is actually his obfuscator. In which spot did you stop?

7 hours ago, 14yoKID said:

Nothing really strange,the so called "self-modifying code" is actually his obfuscator. In which spot did you stop?

It's reverse engineers problem not me, it's not strange ? please solve it

Edited February 8Feb 8 by Gladiator

Actually nice KeyGenMe but there are a bit of unknowns to be honest,i deobfuscated it and tried replicating your vm_mixer ( vm_math ) however you want to call it,only issue is i cant see what exact key lenght should be. Are there any hints for this KeyGenMe?