Getting Adress of variable in another process

[Tommy98]

hello i can simply handle process by using HANDLE hProcess = OpenProcess(stuffhere);

how can i basicly go throught all the adresses in the process and find the exactly one which is equal to the value i entered

so lets say i entered 50

then i want to find all the adresses of the process which after dereferencing contains the value 50 is this possible ?

[wizebin]

It is indeed possible.

char getbytefromprocess(DWORD pid, uint64_t loc) {
  HANDLE pHandle;
  SYSTEM_INFO si;
  MEMORY_BASIC_INFORMATION mbi;
  LPVOID lpMem;
  DWORD ret, totalRead;

  pHandle = OpenProcess(PROCESS_ALL_ACCESS, 0, pid);
  if (pHandle == NULL) {
    return false; //You may want to do some error handling here
  }

  lpMem = (void*)loc;

  char buf;
  ReadProcessMemory(pHandle, lpMem, (LPVOID)(&buf), 1, &totalRead);

  CloseHandle(pHandle);
  return buf;
}

[Tommy98]

not just one variable might containt the value so basicly i need loop? 0x0400000 to 0xFFFFFFF or smth like that?

[wizebin]

Windows program's memory location changes between executions, you'll have to generally either have to search for it every time or possibly start the other program as a child process.