thebovl's GPTCrackMe

Author:
thebovl

Language:
C/C++

Upload:
2023-08-30 08:17

Download

Platform:
Windows

Difficulty:
4.0

Quality:
4.0

Arch:
x86-64

Downloads:
300

Size:
14.15 KB

Writeups:
1

Comments:
8

Description

Read "readme.txt"!

Labels ?

Anti-debugging Debugger/tool window detection String / data encryption XOR

Comments (8)
Writeups (1)

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M1rage on 2023-09-16 02:22: it says I'm using debugger when I'm not

cnathansmith on 2023-09-16 23:09: It's detecting processes or windows you have open

thebovl on 2023-09-21 12:18: No one tried to crack it?? ;(

jeffli6789 on 2023-09-22 04:55: I had a look at it, and got a basic understanding of the algorithm, but I did not spend the time to actually solve it. This is a cool one, btw

thebovl on 2023-09-22 14:47: @jeffli6789 thx

cnathansmith on 2023-09-24 07:44: @thebovl I accidentally tried a correct combo while I was working on it and realized what it was doing, which threw me off because I try to outline the write-ups as I go to help demonstrate the discovery process in a way that would help readers with other challenges and I wasn't sure how to work that in lol. I'll try to take another look at it soon

dima_kettle on 2023-10-24 07:59: Thank you for this crackme! Using of anti-debugging function is very cool! But I don't think, that is 4 level of difficulty, as verification algorithm is not so hard. Anyway, thank you again for this nice crackme!)

SirWardrake on 2024-02-22 00:48: This is the mother of all Anti-Debugging Code^^ After fixing this problem, the password-scrambling-part is easy to solve. Made a little keygen... Nice one!!

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Solution by cnathansmith on 2023-09-25 17:59:
Complete walk-through with keygen

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crackmes.one

crackmes.one

thebovl's GPTCrackMe