BAGZZlash's Try and patch me

Author:
BAGZZlash

Language:
(Visual) Basic

Upload:
2024-01-25 10:19

Download

Platform:
Windows

Difficulty:
2.0

Quality:
2.5

Arch:
x86

Downloads:
6

Writeups:
1

Comments:
7

Description

For many crackmes it is reasonably easy to crack-by-patch, yet somewhat harder to reverse the serial checking algorithm to obtain a valid serial or to create a keygen. Here, I tried to have this the other way around: The checking algorithm is not particularly interesting. Your task, therefore, is to apply a patch that will make the program to display the "serial correct" message for whatever the user enters. Really make sure that this is the case for your cracked exe.

Comments (7)
Writeups (1)

You must be logged in to post a comment

nightxyz on 2024-01-30 09:17: Too easy. patched.

nightxyz on 2024-01-31 18:08: @cnathansmith Check your system because this file is trojan. Check with virustotal.

cnathansmith on 2024-02-01 07:13: It gets the same results as the original. It's all "generic", "suspicious", "dropper", etc. Prob some unpacking in the VB runtime, or VB is uncommon enough that it's suspicious on its own. None of the major vendors are flagging it. Obv you have to choose your own comfort level and thanks for pointing it out, but it looks fine to me.

cnathansmith on 2024-02-01 07:15: All this work should be done in VMs anyway. We're executing obfuscated programs from random cracking enthusiasts on the Internet.

kestas69 on 2024-02-26 19:06: used a jump felt too easy, but im still not experienced enough to do something else in this case.

kestas69 on 2024-02-26 19:07: basically i took the ez way out :P

abc00012345 on 2024-04-01 18:14: finally did it

You must be logged in to submit a writeup

Solution by cnathansmith on 2024-01-31 05:01:
Simple walk-through with patched binary

Download

crackmes.one

crackmes.one

BAGZZlash's Try and patch me