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[Question]Hooking func without memory editing

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Robotex
Master Cheater

Reputation: 0

Joined: 05 Sep 2006
Posts: 378
Location: The pizza country!

Posted: Wed Dec 27, 2006 7:04 am Post subject: [Question]Hooking func without memory editing

Let's say we have that code in our process memory

Code:

PUSH ECX
LEA ECX,DWORD PTR DS:[EAX+380]
CALL 00427B20

And i want to hook the function being called from a injected dll without editing it's memory (because of crc32 checks)

The code i maded to replace it's function is something like that

Code:

void somefunc() {
const char* lpcLine;
//Get the parameter
__asm
{
   push esi
   mov esi, dword ptr ds:[ecx]
   mov [lpcLine], esi
   pop esi
}
<other codes>
}

So as the topic's title how do i hook it without making the crc32 check know it has been hooked?
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mahajarama
Advanced Cheater

Reputation: 0

Joined: 28 Dec 2006
Posts: 97

Posted: Thu Dec 28, 2006 4:43 pm Post subject:

Is hooking it even possible?

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