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Help me understanding this C# Code

 
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lolAnonymous
Expert Cheater
Reputation: 1

Joined: 19 Jul 2015
Posts: 154
PostPosted: Fri Jun 03, 2016 6:32 am    Post subject: Help me understanding this C# Code Reply with quote
I was finding a tutorial to make trainer with C# and after few days I got a source code of a trainer, But I am having problem in understanding this code :-

Code:
private int InitializeMoneyLock(CheckBox _myCheckBox)
        {
            moneyLock.applyCode = new byte[] { 0xC7, 0x45, 0x08, 0x00, 0x00, 0x00, 0x00, 0x66, 0x0F, 0xD6, 0x06, 0xD3, 0xCA, 0x2B, 0x55, 0x08, 0xC3 };
            moneyLock.jmpOffset = 0x34F90E;
            moneyLock.jmpStart = new byte[] { 0x50, 0xB8 };
            moneyLock.jmpEnd = new byte[] { 0xFF, 0xD0, 0x58};
            moneyLock.jmpRecovery = new byte[] { 0x66, 0x0F, 0xD6, 0x06, 0xD3, 0xCA, 0x2B, 0x55, 0x08 };

            int ok;
            if (_myCheckBox.IsChecked.Value == true)
            {
                ok = Helper.WriteCode(ref moneyLock);
                if (ok <= 0) { _myCheckBox.IsChecked = false; }
            }
            else
            {
                ok = Helper.RecoveryCode(ref moneyLock);
            }
            return ok;

        }



I can't understand what is :
jmpoffset
jmpstart
jmpEnd
jmpRecovery

The auto assemble script I made is :-

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

mov [ebp+08],0


originalcode:
sub edx,[ebp+08]
rol edx,cl

exit:
jmp returnhere

"Asphalt8_w8.exe"+34F914:
jmp newmem
returnhere:


 
 
[DISABLE]
//code from here till the end of the code will be used to disable the cheat
dealloc(newmem)
"Asphalt8_w8.exe"+34F914:
sub edx,[ebp+08]
rol edx,cl
//Alt: db 2B 55 08 D3 C2


Note : I am a C language student and yeah I will have C# in the fourth module (after 8 months) , And I can't wait 8 months to make this code understand... So please Help me understanding this...

Thanks In Advance Smile


[EDITED]

As Cake-san helped me but I don't know why he/she removed his post.. Shocked

Thanks a lot Cake-san Smile

Do you have any idea that why He put the replace code in 3 different lines ?

Code:
moneyLock.jmpStart = new byte[] { 0x50, 0xB8 };
            moneyLock.jmpEnd = new byte[] { 0xFF, 0xD0, 0x58};


He can easily do this :-


Code:
moneyLock.jmpRecovery = new byte[] { 0x66, 0x0F, 0xD6, 0x06, 0xD3, 0xCA, 0x2B, 0x55, 0x08 };


and one more thing the jmpoffset must be the offset of 66 0F D6 06 ? Right?

Thanks In Advance Smile

[/EDITED]
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Cake-san
Grandmaster Cheater
Reputation: 8

Joined: 18 Dec 2014
Posts: 541
Location: Semenanjung
PostPosted: Fri Jun 03, 2016 9:20 am    Post subject: Reply with quote
Sorry,there're something wrong in my post,that's why I deleted it. Wink
Here's my speculation,nothing more or less:
Originalcode:
Code:

0x34F907 - C7 45 08 00000000     - mov [ebp+08],00000000 { 0 }
0x34F90E - 66 0FD6 06            - movq [esi],xmm0
0x34F912 - D3 CA                 - ror edx,cl
0x34F914 - 2B 55 08              - sub edx,[ebp+08]
0x34F917 - C3                    - ret

Injected:
Code:

0x34F907 - C7 45 08 00000000     - mov [ebp+08],00000000 { 0 }
0x34F90E - 50                    - push eax
0x34F90F - B8 FFD058CA           - mov eax,CA58D0FF { -900148993 }
0x34F914 - 2B 55 08              - sub edx,[ebp+08]
0x34F917 - C3                    - ret


Like writing formal letter,maybe there're some formats that you need to follow ? Rolling Eyes
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lolAnonymous
Expert Cheater
Reputation: 1

Joined: 19 Jul 2015
Posts: 154
PostPosted: Fri Jun 03, 2016 9:31 am    Post subject: Reply with quote
Thanks A lot Cake-san Wink
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