由于某种原因，WriteProcessMemory无法正常工作

Question

这是我正在尝试制作的程序的所有源代码，我根本无法让WriteProcessMemory工作。它返回正确的消息，说一切顺利，但游戏中实际上没有任何变化。有谁知道修复？

#include <iostream>
#include <Windows.h>
using namespace std;
// variables
int plcHold = 1;
string hlthLoop = "OFF";
string ammoLoop = "OFF";
DWORD pid;
DWORD playerAddr;
DWORD hlthOffs = 0xF8;
// main function
int main()
{
// finding pid, opening proc, finding player address
HWND hwnd = FindWindowA(NULL, "AssaultCube");
if(hwnd == NULL)
{
cout << "Error; Couldn't find window" << endl;
} else{
GetWindowThreadProcessId(hwnd, &pid);
HANDLE pHandle = OpenProcess(PROCESS_ALL_ACCESS, FALSE, pid);
if(pHandle == NULL)
{
cout << "Error; Couldn't open process" << endl;
} else{
ReadProcessMemory(pHandle, (LPCVOID)0x50F4F4, &playerAddr, sizeof(playerAddr), 0);
if(ReadProcessMemory != FALSE)
{
cout << "Health successfully read!" << endl;
} else{
cout << "Error code " << GetLastError << endl;
}
}
while(plcHold == 1){
cout << "========== *****'s Assault Cube Trainer ==========n" << endl;
cout << "=============== Health Loop - " << hlthLoop << " ================" << endl;
Sleep(1500);
system("cls");
if(GetAsyncKeyState(0x5A))
{
cout << "Health successfully edited!" << endl;
WriteProcessMemory(pHandle, LPVOID(playerAddr + hlthOffs), 0, sizeof(999), 0);
CloseHandle(pHandle);
}
}
}
return 0;
}

Answer 1

您正在传递一个空指针，指向第三个 (lpBuffer( 参数的WriteProcessMemory。您必须传递实际值的地址，而不是值本身。如果要写入整数值，请尝试以下操作：

DWORD val = 0; // or 999?
WriteProcessMemory(
pHandle, static_cast<LPVOID>(playerAddr + hlthOffs),
&val, sizeof(val), 0);