Biglsim04's SlimKeyGen

Author:
Biglsim04

Language:
C/C++

Upload:
2026-07-23 14:47

Download

Platform:
Windows

Difficulty:
4.3

Quality:
4.7

Arch:
x86-64

Downloads:
316

Size:
32.00 KB

Writeups:
1

Comments:
11

Description

the only thing you need to do is devirtualize the logic and rewrite the original alghoritm in c++, and please write how you did it, no patching of course since that is trivial, only solution accepted are original source code to generate serials for every possible name given, and possibly an explnation of the architeture of the VM and how you undestood its logic

Labels ?

String / data encryption XOR Crypto / hash algorithm Other / custom hash Code virtualization / VM Control-flow obfuscation Indirect / computed jumps & calls State machine / dispatcher Custom / generic obfuscation

Comments (11)
Writeups (1)

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jeffli6789 on 2026-07-25 00:42: @deleted_user I approved your writeup, but I think it is wrong upon closer inspection, so I have deleted it. Please feel free to submit a new one if you have something new!

Biglsim04 on 2026-07-25 07:54: Well now that xusheng provided a perfect solution(even if using ai) it is correct and explained exactly how it is, so if you are stuck you can look at that solution

Biglsim04 on 2026-07-25 07:55: So I cannot trust any future solution to be made from scratch😂

Biglsim04 on 2026-07-25 12:52: This is NOT a crackme you should do at all, use easy crackmes until you got some skills and then go on harder crackmes...you dont need to patch anything, did you read the description?? Also dont make writeups if you are so confused

Biglsim04 on 2026-07-25 12:56: Did you just patch the code to print access granted? Anyway if it is your first day go with 1 of difficulty or 2 max for now, this one is pretty hard

jeffli6789 on 2026-07-25 15:35: @deleted_user your solution was wrong because it is just incorrect -- it did not produce valid keys. I think the reason for that is 1) that the decompilers screwed up and produced incorrect output, which is picked up by AI to produce a wrong solution; 2) you did not test it against the real crackme -- if you run it you will see it is wrong

jeffli6789 on 2026-07-25 15:36: @Biglsim04 no he actually did not -- it is funny, the decompiler emitted wrong code which then lead AI to give a totally wrong solution (AI believes it is correct as long as the last part of the key is 0x1)

Biglsim04 on 2026-07-25 19:46: No pleasw dont make a writeup, you cannot solve and need to fully use AI so no need for it, so it was you who gave like 1 of rating?

Biglsim04 on 2026-07-25 19:51: I dont want a writeup to make you feel good if you have no idea what you are doing and just use AI and not even TEST IT AT LEAST ON REAL PROGRAM, and even your AI got it wrong, i know this is a bit harsh, but you honestly deserve it

jeffli6789 on 2026-07-26 01:51: @deleted_user please try to be respectful to challenge authors.

Biglsim04 on 2026-07-26 12:22: @deleted_user your solution is not accepted by me, you merely pasted what ai told you, and even used same variable names as xusheng solution, shame on you

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Solution by jeffli6789 on 2026-07-25 01:07:
Solution & Keygen

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crackmes.one

crackmes.one

Biglsim04's SlimKeyGen