I am having a strange problem. For a fun little test, I decided to see if I could get some minesweeper info out of memory. For some reason though, ReadProcessMemory() fails every time. I am not sure why because with this same code I was previously reading some memory from other processes. I have tried opening the process with PROCESS_ALL_ACCESS but to no avail. Can anyone point me in the right direction?
Also, point out any bad code practices.
#include <stdio.h>
#include <windows.h>
typedef unsigned long DWORD;
int main(void)
{
HWND hWnd = FindWindow(NULL, "Minesweeper");
HWND pHandle;
DWORD PID;
unsigned long lpWidth = 0x1005334;
unsigned long bytesread;
unsigned int width;
if (hWnd == NULL)
{
printf("Window not found\n");
return 1;
}
printf("Window Handle = %x\n", hWnd);
GetWindowThreadProcessId(hWnd, &PID);
printf("Process ID = %x\n", PID);
pHandle = OpenProcess(PROCESS_ALL_ACCESS, 1, PID);
printf("Process Handle = %x\n", pHandle);
if (pHandle == NULL)
{
printf("The Process handle could not be retrieved\n");
return 1;
}
if (ReadProcessMemory(pHandle, &lpWidth, &width, sizeof(width), &bytesread))
{
printf("Width = %d\n", width);
}
else
{
printf("ReadProcessMemory Failed\n");
}
return 0;
}
What's getlasterror()?
299
Strange thing though. I changed the parts to be read size to 0 and I got a value returned. I'm going to have to see if it is what I'm looking for.
As a matter of fact, any address I read I get 0x4025CB as a result, why is this. The program that i downloaded reads from this address and gets the value of 9 (or whatever the width is).
SOLVED:
const void *lpWidth = (void *)0x1005334;
ReadProcessMemory(pHandle, lpWidth, &width, sizeof(width), &bytesread)
well i have some similar code, but i call virtualprotectex because i'm patching stuffs... but anyways you can find the code here: http://www.pscode.com/vb/scripts/ShowCode.asp?txtCodeId=52494&lngWId=1 note: this code only works on minesweeper 5.1
oh and sorry that its overly oop and in vb6 ;p