一些错误[这是一个占位符]

Question

void Code::asm_code_inject(HANDLE handle)
{
    LPVOID addr = VirtualAllocEx(handle, nullptr, this->length, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
    if (addr == nullptr)
        return;

    DWORD write_size = 0;
    BOOL ret = WriteProcessMemory(handle, addr, this->code, this->length, &write_size);
    if (ret == 0 || write_size != this->length)
    {
        VirtualFreeEx(handle, addr, 0, MEM_RELEASE);
        return;
    }

    HANDLE thread = CreateRemoteThread(handle, nullptr, 0, LPTHREAD_START_ROUTINE(addr), nullptr, 0, nullptr);
    if (thread == nullptr)
    {
        VirtualFreeEx(handle, addr, 0, MEM_RELEASE);
        return;
    }

    [[maybe_unused]] DWORD wait_status = WaitForSingleObject(thread, INFINITE);
    CloseHandle(thread);
    VirtualFreeEx(handle, addr, 0, MEM_RELEASE);

#ifdef _DEBUG
    std::wcout << L"Wait Status: " << wait_status << std::endl;
    std::wcout << L"Asm Code: ";
    for (size_t i = 0; i < this->length; i++)
        std::cout << std::hex << int(code[i]) << " ";
    std::cout << std::endl;
    std::wcout << L"Code Length: " << std::dec << this->length << std::endl;
#endif
}

我要把这些从网上得到的代码(一部分)编译dll

[Error] cannot convert 'DWORD* {aka long unsigned int*}' to 'SIZE_T* {aka long long unsigned int*}' for argument '5' to 'WINBOOL WriteProcessMemory(HANDLE, LPVOID, LPCVOID, SIZE_T, SIZE_T*)'

[Warning] 'maybe_unused' attribute directive ignored [-Wattributes]

环境：ISOC++11

Answer 1

要读错误提示：

[Error] cannot convert 'DWORD* {aka long unsigned int*}' to 'SIZE_T* {aka long long unsigned int*}' for argument '5' to 'WINBOOL WriteProcessMemory(HANDLE, LPVOID, LPCVOID, SIZE_T, SIZE_T*)'

[Warning] 'maybe_unused' attribute directive ignored [-Wattributes]

 

加粗部分就是说 WriteProcessMemory 的第 5 个参数类型不匹配。需要的是 SIZE_T* ，你传入的是 &write_size，而 write_size 是 DWORD 类型