Cheat Engine

Boon · Posted: Sun Mar 22, 2009 4:03 am Post subject: Another pretty easy crackme

Hello , everyone! This section seems to be quite quiet lately.

So here's a small/simple crackme.
It's made in assembler so you won't have to spend hours digging through garbage code.

The goal is to make it accept any password. It will seem like thirty seconds of work , but after you patch it the obvious way there will be a surprise for you Wink

Zand · Posted: Sun Mar 22, 2009 7:44 am Post subject:

surprise!

Boon · Posted: Sun Mar 22, 2009 7:49 am Post subject:

Good job, everyone! Wink

DoomsDay · Posted: Sun Mar 22, 2009 8:44 am Post subject:

I patched the following:
0040120D: JMP 0040109D

GIORA · Posted: Sun Mar 22, 2009 7:57 pm Post subject:

Cracked!

Boardwalk30 · Cheater Reputation: 0 Joined: 01 Mar 2009 Posts: 30

Zand · Posted: Mon Mar 23, 2009 2:22 am Post subject:

DoomsDay · Posted: Mon Mar 23, 2009 5:43 am Post subject:

EB 00 Is the surprise.

ElitestFX · Posted: Mon Mar 23, 2009 9:41 am Post subject:

I suppose this patch may be considered as messing with the thread. Looks like the thread constantly writes EB 16 to 40109B. This will make it write EB 00.
402044 -> EB 00

This patches the call.
401096 -> EB 05 90 90 90

This patches inside the call.
401208 -> E9 90 FE FF FF
-=or=-
40120D -> E9 8B FE FF FF

Boon · Posted: Mon Mar 23, 2009 9:45 am Post subject:

The thread rule is there just so people don't nop the createthread call.

dnsi0 · Posted: Mon Mar 23, 2009 9:49 am Post subject:

How about I patch it and goto WriteProcessMemory and change the first line to RETN 14? it works the same way.