Help with memory functions etc

I'm trying to create a signature search that can find the address of whatever bytes you input. For example, if I set buffer to 0x04AF, the function will search through the process' memory untill it finds an address that holds that value. Unfotunatly, I've run into a lot of difficulty. Any Help would be greatly appreciated. Here is the full source code. The return value always seems to be zero, even when I know the buffer is equal to the memory.

I thought that only tells me how many bytes were read I dont understand how.

Your code will not work.

You read the same adress in the memory in cycle.

dwStartAddress - never changed.

for(unsigned int i = 0; i < length; i++)

ReadProcessMemory(hProcess, (LPVOID)dwStartAddress, buffer, sizeof(signature), NULL);

if(CompareBytes(buffer, signature, sizeof(signature)))

{

cout << "Match Found";

return (DWORD*)(dwStartAddress + i);

}

byte buffer[sizeof(signature)]; // sizeof(signature) == 4 always.

So, it equals

byte buffer[4];

if(CompareBytes(buffer, signature, 4))

compares only for bytes.

Thus, you read and compare first 4 byte in cycle, so you never find anything.

And the last memory in Windows allocated by pages, some pages there can be a gap, thus scaning through all memory is not good idea.