Author:
kwenma

Language:
C/C++

Upload:
10:41 AM 07/21/2025

Download

Platform
Windows

Difficulty:
4.0

Quality:
4.0

Arch:
x86-64

Description

This crackme features a custom PE packer. The unpacked PE if you manage to extract it has Simple Compile-Time Obfuscation. There is no static password to solve the crackme, each person has their own key as well so no reusable keys. Have fun!

• Comments
• Writeups

You must be logged in to post a comment

nightxyz on 8:54 PM 07/21/2025: No need to unpack it. Password is HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography\MachineGuid value. Each user has unique MachineGuid.

kwenma on 7:52 AM 07/22/2025: you could atleast try to unpack it yo ✌️✌️✌️✌️

nightxyz on 10:44 AM 07/22/2025: The program doesn't work properly anyway. Sometimes it works after a second double-click. Sometimes it says Access Denied, sometimes it displays mixed ASCII characters instead of "access denied" message, and sometimes it displays a message with blank characters. So, i didn't struggle with your custom PE packer. In x64dbg, after some unpacking routines, i came successfully accessed the unpacked file entry point which comes after initterm, argc and argv routines.

kwenma on 10:56 AM 07/22/2025: yea i had some issues while writing the compile-time obf. I have a new one coming where none of those issues are present and the program should work, it also wont be as easy as just a reg should be releasing any time now

You must be logged in to submit a writeup