Unable to write to a multilevel-pointer

[Amrok]

Hi,

i'm using this function:

// ReadMultilevelPointer
int CMemory::ReadMultilevelPointer(unsigned int Module, unsigned int Pointer1, unsigned int Pointer2, unsigned int Pointer3, unsigned int Pointer4)
{
	UINT_PTR uiptrFinal = DeRef( DeRef( DeRef( Module + Pointer1 ) + Pointer2 ) + Pointer3) + Pointer4;

	int Value;
	::ReadProcessMemory(PROC_HANDLE, reinterpret_cast<LPVOID>(uiptrFinal), &Value, sizeof(int), NULL);
	return Value;
}

// ReadMultilevelPointer DeRef Function
UINT_PTR CMemory::DeRef( UINT_PTR _uiptrPointer ) {
    UINT_PTR uiptrRet;
    if ( !::ReadProcessMemory( PROC_HANDLE, reinterpret_cast<LPVOID>(_uiptrPointer), &uiptrRet, sizeof( uiptrRet ), NULL ) ) { return 0UL; }
    return uiptrRet;
}

To Read values from a multilevel pointer.

Now i'd like to change the value i've read, so i made a new function to write this:

// WriteMultilevelPointer
bool CMemory::WriteMultilevelPointer(unsigned int Module, unsigned int Pointer1, unsigned int Pointer2, unsigned int Pointer3, unsigned int Pointer4, LPCVOID Value)
{
	UINT_PTR uiptrFinal = DeRef( DeRef( DeRef( Module + Pointer1 ) + Pointer2 ) + Pointer3) + Pointer4;
	if(::WriteProcessMemory(PROC_HANDLE, reinterpret_cast<LPVOID>(uiptrFinal), Value, sizeof(Value), NULL))
		return true;
	else
		return false;
}

so Here is my Problem:
the variable "Value" must be a LPCVOID.. but how do i convert my int to LPCVOID?
like:

Value = ReadMultilevelPointer(.........)+50

any idea how to convert from int to LPCVOID?

[flo8464]

LPCVOID roughly translates to 'long pointer to constant void'.
Just get a pointer to your int variable and cast it to void.

int val;
LPCVOID ptr = static_cast<LPCVOID>(&val);

Two more things:
1. Write template code for this function, it requires only minimal changes and you're able to write types other than int correctly.
2. Check return values. Your code might "remote dereference" invalid memory addresses and you don't even check if ReadProcessMemory suceeds.

[_Mike]

the variable "Value" must be a LPCVOID.. but how do i convert my int to LPCVOID?

To answer your question: (which is the wrong question to ask btw)

(LPCVOID)Value

I'm not saying this to be rude, but to help both yourself and the rest of us here on this forum.. Maybe before you attempt to hack wow you should actually learn the language and the windows API. It would save you a lot of time and trouble in the long run.

[tymezz]

I suggest you check out HadesMem by Cypher, it seems like it could save you a lot of trouble. hadesmem - Windows memory hacking library - Google Project Hosting