CrYP70NYM's Game Crackme

Author:
CrYP70NYM

Language:
C/C++

Upload:
2024-07-30 05:19

Download

Platform:
Windows

Difficulty:
2.1

Quality:
4.2

Arch:
x86

Downloads:
18

Size:
209.88 KB

Writeups:
0

Comments:
14

Description

Hello! This is my second crackme! Its a crackme that has a cd check ik very old and also has a small little maze game at the end! GOOD LUCK!

Comments (14)
Writeups (0)

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flcksr on 2024-07-30 19:42: Super easy, unpack upx then in x64dbg at 00401558 change it to jmp instead of je and you're done

CrYP70NYM on 2024-07-31 00:43: @flcksr Yep thats how you crack it!

perXhide on 2024-07-31 15:39: I tried changing MOV EAX, 1 ; Set return value to 1 in checkCdRom function

Helel on 2024-08-01 10:35: Hi. I'm so new to this field, I just found out what packing is. Could I unpack with Ghrida?

Sir_Zed on 2024-08-01 17:22: @Helel UPX is just for making files smaller not for protection. To unpack it, just use: :upx.exe pr.exe -d ( u need to install upx ofc). For other packers, try DiE or PEiD. They can spot most common ones. After that, a quick Google search will show you how to unpack them. Ofc, if you wanna get fancy, you can use a debugger to unpack UPX manually. Lots of tutorials out there for that. Good luck!

loadlibrarya on 2024-08-02 06:40: unpack - bytepatch the cdrom check - cracked! also the game rotates the camera too fast (multiply by deltatime?) + the left and arrow keys are inverted

Lucas0001 on 2024-08-02 22:14: 1. Unpack UPX with CFF Explorer Suite 2. Just skip the CD ROM check 3. Enjoy the maz

Doubtful on 2024-08-05 22:04: Unpack with UPX then skip a checking part for example with changing JE to JMP or filling the warning jump with NOP's.

Irval on 2024-08-09 16:03: 1. Unpacked UPX 2. Patched .text:0040150C:00401557 to nop's (0x90) - You can skip this step. I just wanted to cut out the verification call on the CD. 3. Patched .text:00401558 je to jmp

PL45M4 on 2024-08-12 01:40: D3DX9 is required to complete this crackme. I was able to download the runtime from here: https://www.microsoft.com/en-us/download/details.aspx?id=8109

survivalizeed on 2024-08-14 15:09: Nice game :). For anyone who wants to learn reverse engineering better, I highly recommend to NOT use UPX here. Do it manually so you learn more!

iaakanshff on 2024-08-18 16:27: Oh, it was an easy one, all i did was just unpacked and then patched the jnz instruction at 00402329 with jz. Then patched the jz instruction at 00402364 with jnz. The goal was to return 1 from the CheckCDRom function. By the way, i used ida Finished.

c0mrade on 2024-08-19 15:25: begginer here, whats the pw for the zip? after all i need to access the file to crack it, right?

anonyninez on 2024-09-03 17:34: nothing outside except white wall https://imgur.com/a/MkMNCSa

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CrYP70NYM's Game Crackme