VSEC Hyper Crackme

[Gladiator]

View File

VSEC Hyper Crackme

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Brief and useful
Find correct license key, don't try to patch file.

What comes within this crackme : 

+ Code Virtualization
+ Unique Junkcode Generation
+ Control-Flow Obfuscation

 

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• Submitter
  Gladiator
• Submitted
  03/06/2025
• Category
  CrackMe

 

[kao]

Spoiler

Key: 26534

 

There's too much junk code and it's located in the wrong places. IDA ignores most of it and the rest can be NOP-ped out in huge blocks.
The crackme would be much harder, if the useful VM handler instructions were placed in between the junk code.

[14yoKID]

43 minutes ago, kao said:

  Reveal hidden contents

Key: 26534

 

There's too much junk code and it's located in the wrong places. IDA ignores most of it and the rest can be NOP-ped out in huge blocks.
The crackme would be much harder, if the useful VM handler instructions were placed in between the junk code.

Damn it! You beat me by 20 minutes! 

[kao]

38 minutes ago, 14yoKID said:

You beat me by 20 minutes! 

You could still tell us how you solved it.  There's always something to learn..

[Gladiator]

2 hours ago, kao said:

  Hide contents

Key: 26534

 

There's too much junk code and it's located in the wrong places. IDA ignores most of it and the rest can be NOP-ped out in huge blocks.
The crackme would be much harder, if the useful VM handler instructions were placed in between the junk code.

Good job kao, would you like to share some details about what have you done ?