jochen_'s ReverseMe4

Author:
jochen_

Language:
Assembler

Upload:
2022-04-03 15:57

Download

Platform:
Windows

Difficulty:
4.5

Quality:
5.0

Arch:
x86-64

Downloads:
283

Size:
3.50 KB

Writeups:
1

Comments:
3

Description

Same objective as my first on here https://crackmes.one/crackme/5fb1642933c5d424269a1850 You have to make the MessageBox show even when running under a debugger.. So basically circumvent the anti-debug stuff. As with ReverseMe3, ReverseMe4 was also coded to not run on Win7 and Win10 ver1909 and below. ReverseMe4 was also coded to NOT run under a VM ! If you want to use a VM, you'll have to bypass one more extra check ! Good luck ;)

Labels ?

Anti-debugging Timing (rdtsc/GetTickCount) NtQueryInformationProcess Self-debug / block debugger String / data encryption XOR Self-modifying / runtime decrypt Crypto / hash algorithm CRC32 Code virtualization / VM Anti-tamper / integrity

Comments (3)
Writeups (1)

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s4r on 2022-04-21 23:06: Great challenge !! I'll probably publish a solution soon :) Thanks and waiting for your next one

alfablog on 2022-05-06 13:49: Hello, I want to crack a software. It has a license. I do not know how to do it. Everything I do will not crack.

jochen_ on 2022-05-09 17:56: Then maybe you should not try this Crackme yourself ?? Did you ask any of your friends ? :D

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Solution by s4r on 2022-04-22 13:16:
a .txt to this cool challenge, the library that performs the patch is in the .txt file.

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