掛鈎函數時出錯，“變量x周圍的堆棧已損壞。”？ C ++

Question

我正在嘗試在x64應用程序上掛鈎函數。 這是我的代碼：

int __stdcall nRecv(SOCKET s, char* buf, int len, int flags)
{
    Log("Receving!");
    return 0;
}

BOOL HookFunction(LPCWSTR moduleName, LPCSTR funcName, LPVOID pDestination)
{
    BYTE stub[6] = { 0xe9, 0x00, 0x00, 0x00, 0x00, 0xc3 };
    DWORD pProtection;

    DWORD pSource = (DWORD)GetProcAddress(GetModuleHandle(moduleName), funcName);


    LPVOID pTrampoline = VirtualAlloc(NULL, 6 + sizeof(stub), MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);

    VirtualProtect((LPVOID)pSource, 6, PAGE_EXECUTE_READWRITE, &pProtection);


    CopyMemory(stub + 1, &pDestination, 4);

    CopyMemory((LPVOID)((DWORD_PTR)pTrampoline), &pSource, 6);
    CopyMemory((LPVOID)((DWORD_PTR)pTrampoline + 6), stub, sizeof(stub));


    CopyMemory(stub + 1, &pTrampoline, 4);
    CopyMemory(&pSource, &stub, sizeof(stub));


    VirtualProtect((LPVOID)pSource, 6, pProtection, NULL);

    return TRUE;
}

BOOL recvHook = HookFunction(L"ws2_32.dll", "recv", &nRecv);

我已連接調試器並發現錯誤： 變量pSource周圍的堆棧已損壞。

我真的找不到發生這種情況的確切原因，我做錯了什么嗎？ 謝謝！

Answer 1

這行代碼將6個字節的內存復制到4個字節的變量中

CopyMemory(&pSource, &stub, sizeof(stub));