如何将DLL注入到任何进程中？

Question

我正在努力将dll注入Windows上的任何进程。我已经有一个适用于我自己的程序的代码，例如hello world或类似的东西，但其他程序，例如记事本，calc，chrome等。

程序可以阻止dll的注入，所以我不知道该怎么做才能绕过它。

我的最终目标是挂钩任何程序的api调用。

此域对我来说是新的，因此，如果您有任何资源或解决方案，那么我是这里的初学者！

injector.cpp

#include <iostream>
#include <Windows.h>

int main()
{
    // path to our dll
    LPCSTR DllPath = "D:\\projects\\standardinjection\\release\\testlib.dll";

    INT process_id = 14367;
    // Open a handle to target process
    HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, process_id);

    // Allocate memory for the dllpath in the target process
    // length of the path string + null terminator
    LPVOID pDllPath = VirtualAllocEx(hProcess, 0, strlen(DllPath) + 1,
        MEM_COMMIT, PAGE_READWRITE);

    // Write the path to the address of the memory we just allocated
    // in the target process
    WriteProcessMemory(hProcess, pDllPath, (LPVOID)DllPath,
        strlen(DllPath) + 1, 0);

    // Create a Remote Thread in the target process which
    // calls LoadLibraryA as our dllpath as an argument -> program loads our dll
    HANDLE hLoadThread = CreateRemoteThread(hProcess, 0, 0,
        (LPTHREAD_START_ROUTINE)GetProcAddress(GetModuleHandleA("Kernel32.dll"),
            "LoadLibraryA"), pDllPath, 0, 0);

    // Wait for the execution of our loader thread to finish
    WaitForSingleObject(hLoadThread, INFINITE);

    std::cout << "Dll path allocated at: " << std::hex << pDllPath << std::endl;
    std::cin.get();

    // Free the memory allocated for our dll path
    VirtualFreeEx(hProcess, pDllPath, strlen(DllPath) + 1, MEM_RELEASE);

    return 0;
}

我的dll

#include <Windows.h>

BOOL APIENTRY DllMain( HMODULE hModule,
                       DWORD  ul_reason_for_call,
                       LPVOID lpReserved
                     )
{
    if (ul_reason_for_call == DLL_PROCESS_ATTACH)
        MessageBox(0, L"Hello From testlib!", L"Hello", MB_ICONINFORMATION);

    return TRUE;
}

我目前在Windows 10 x64上来自Unix操作系统，因此Windows对我来说是个新手！

感谢您的时间！

Answer 1

对于99％的注入方法，您必须能够将代码写入目标进程。为此，您需要能够通过将OpenProcess（）与所需的privileges一起使用来打开进程句柄。

如果您要注入的进程是带有内核模式防tic火的游戏，它将通过ObjRegisterCallbacks阻止您。您还需要处于内核模式才能绕过此保护。

如果您要注入的进程正在以SYSTEM或Protected Process Light进程的形式运行，那么那里也会遇到麻烦。有关更多信息，请访问我的previous answer