Cheat Engine :: View topic - CheatEngine ADD ECX,94

Cheat Engine
The Official Site of Cheat Engine

FAQ

Memberlist

Usergroups

Profile

CheatEngine ADD ECX,94 - really weird thing

Cheat Engine Forum Index -> Cheat Engine

View previous topic :: View next topic

Author

Message

bartekdvd
How do I cheat?

Reputation: 0

Joined: 01 Jan 2012
Posts: 4

Posted: Fri Nov 30, 2012 6:24 am Post subject: CheatEngine ADD ECX,94 - really weird thing

This is log from tracer:

Code:

010681A0 - push ebp
EAX=010681A0
EBX=00000000
ECX=263AD23C
EDX=FD1EB8B0
ESI=00000006
EDI=0573FE68
EBP=0573FE4C
ESP=0573FD88
EIP=010681A0

EFLAGS=00000206

-
010681A1 - mov ebp,esp
EAX=010681A0
EBX=00000000
ECX=263AD23C
EDX=FD1EB8B0
ESI=00000006
EDI=0573FE68
EBP=0573FE4C
ESP=0573FD84
EIP=010681A1

EFLAGS=00000206

-
010681A3 - push esi
EAX=010681A0
EBX=00000000
ECX=263AD23C
EDX=FD1EB8B0
ESI=00000006
EDI=0573FE68
EBP=0573FD84
ESP=0573FD84
EIP=010681A3

EFLAGS=00000206

-
010681A4 - mov esi,[ebp+0C]
0573FD90 = (pointer)0573FE48
EAX=010681A0
EBX=00000000
ECX=263AD23C
EDX=FD1EB8B0
ESI=00000006
EDI=0573FE68
EBP=0573FD84
ESP=0573FD80
EIP=010681A4

EFLAGS=00000206

-
010681A7 - add ecx,94
EAX=010681A0
EBX=00000000
ECX=263AD23C
EDX=FD1EB8B0
ESI=0573FE48
EDI=0573FE68
EBP=0573FD84
ESP=0573FD80
EIP=010681A7

EFLAGS=00000206

-
010681AA - push ecx
EAX=010681A0
EBX=00000000
ECX=263AD1D0
EDX=FD1EB8B0
ESI=0573FE48
EDI=0573FE68
EBP=0573FD84
ESP=0573FD80
EIP=010681AA

EFLAGS=00000213

-
010681AB - mov [esi],00000000
0573FE48 = (dword)00000000(0)
EAX=010681A0
EBX=00000000
ECX=263AD1D0
EDX=FD1EB8B0
ESI=0573FE48
EDI=0573FE68
EBP=0573FD84
ESP=0573FD7C
EIP=010681AB

EFLAGS=00000213

-
010681B1 - call AC3SP.AK::MusicEngine::GetDefaultInitSettings+119FA0
EAX=010681A0
EBX=00000000
ECX=263AD1D0
EDX=FD1EB8B0
ESI=0573FE48
EDI=0573FE68
EBP=0573FD84
ESP=0573FD7C
EIP=010681B1

EFLAGS=00000213

-
00F45420 - push ebp
EAX=010681A0
EBX=00000000
ECX=263AD1D0
EDX=FD1EB8B0
ESI=0573FE48
EDI=0573FE68
EBP=0573FD84
ESP=0573FD78
EIP=00F45420

EFLAGS=00000213

-
00F45421 - mov ebp,esp
EAX=010681A0
EBX=00000000
ECX=263AD1D0
EDX=FD1EB8B0
ESI=0573FE48
EDI=0573FE68
EBP=0573FD84
ESP=0573FD74
EIP=00F45421

EFLAGS=00000213

-

ECX=263AD23C
ADD ECX,94
ECX=263AD1D0 - Fuck Logic.

Why after "add ecx,94" instr. ecx = 263AD1D0 instead of 263AD2D0 ?!
CE bug?

EDIT;

I've created new thread in AC3SP process:

Code:

31 C9 - xor ecx,ecx
83 C1 94 - add ecx,94
EB F9 - jmp AC3SP.exe+18

xor ecx,ecx - ecx = 0x00000000
add ecx,94 - ecx should be 0x00000094

but...

Code:

00400018 - xor ecx,ecx
EAX=75733398
EBX=00000000
ECX=00000000
EDX=00400018
ESI=00000000
EDI=00000000
EBP=0B9EFF94
ESP=0B9EFF8C
EIP=00400018

EFLAGS=00000282

-
0040001A - add ecx,94
EAX=75733398
EBX=00000000
ECX=00000000
EDX=00400018
ESI=00000000
EDI=00000000
EBP=0B9EFF94
ESP=0B9EFF8C
EIP=0040001A

EFLAGS=00000246

-
0040001D - jmp AC3SP.exe+18
EAX=75733398
EBX=00000000
ECX=FFFFFF94
EDX=00400018
ESI=00000000
EDI=00000000
EBP=0B9EFF94
ESP=0B9EFF8C
EIP=0040001D

EFLAGS=00000282

-

I don't understand why it is 0xFFFFFF94 instead of 0x000000094.

EDIT2;

I've changed my code. Now it is:

Code:

31 C9 - xor ecx,ecx
81 C1 94000000 - add ecx,00000094
EB F6 - jmp AC3SP.exe+18

and after "add ecx,00000094" ecx = 0x00000094

What is the difference between "add ecx,94" and "add ecx,00000094" ???

EDIT 3;

Ok i understand now. ADD ECX,94 = ADD ECX,FFFFFF94.
ADD ECX,94 - this is sign extended smth.
ADD ECX,00000094 - normal add

Thanks...

Very Happy

Display posts from previous:

	Cheat Engine Forum Index -> Cheat Engine	All times are GMT - 6 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum