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I've managed to find the integrity check opcode

 
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bhfff
Newbie cheater
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Joined: 19 Jan 2017
Posts: 12

PostPosted: Sun Sep 03, 2017 9:44 am    Post subject: I've managed to find the integrity check opcode Reply with quote

Note: I'm still a newbie and all I can do is follow tutorials

I can bypass it even by injecting this piece of code (won't crash)

Code:
[ENABLE]
//code from here to '[DISABLE]' will be used to enable the cheat
alloc(newmem,2048)
label(returnhere)
label(originalcode)
label(exit)

newmem: //this is allocated memory, you have read,write,execute access
//place your code here

originalcode:
mov edi,[edi] // <----- All bytes are stored here
add eax,0000001F

exit:
jmp returnhere

0C561E14:
jmp newmem
nop
nop
returnhere:


 
 
[DISABLE]
//code from here till the end of the code will be used to disable the cheat
dealloc(newmem)
0C561E14:
mov edi,[edi]
add eax,0000001F
//Alt: db 8B 3F 05 1F 00 00 00


The problem is that it (probably) compares the actual value, with the edited value.. or something like that.

I need to tell mov edi,[edi] "Hey it's all good! All values are correct."

How could I possibly solve this problem?

P.S. I found the opcode using stealthedit's integrity scan routines.

Quick edit: The code I gave you is unedited



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OldCheatEngineUser
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Reputation: 4

Joined: 01 Feb 2016
Posts: 582

PostPosted: Sun Sep 03, 2017 9:50 am    Post subject: Reply with quote

bhfff wrote:
The problem is that it (probably) compares the actual value, with the edited value.. or something like that.

I need to tell mov edi,[edi] "Hey it's all good! All values are correct."

im not sure about what you are asking and doing.

what instruction you want to modify?

and mov edi,[edi] is shared instruction.

_________________
About Me;
I Use CE Since Version 1.X, And Still Learning How To Use It Well!
patched cheat engine tutorials
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bhfff
Newbie cheater
Reputation: 0

Joined: 19 Jan 2017
Posts: 12

PostPosted: Sun Sep 03, 2017 10:36 am    Post subject: Reply with quote

OldCheatEngineUser wrote:
bhfff wrote:
The problem is that it (probably) compares the actual value, with the edited value.. or something like that.

I need to tell mov edi,[edi] "Hey it's all good! All values are correct."

im not sure about what you are asking and doing.

what instruction you want to modify?

and mov edi,[edi] is shared instruction.


I need to bypass the shared instruction, because I can not nop it.
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OldCheatEngineUser
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Joined: 01 Feb 2016
Posts: 582

PostPosted: Mon Sep 04, 2017 7:08 am    Post subject: Reply with quote

find another instruction that is associated with your address.

see what accesses this address.

otherwise use a pointer.

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I Use CE Since Version 1.X, And Still Learning How To Use It Well!
patched cheat engine tutorials
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