帮我写一个C++版本的DLL注入程序

好的，以下是一个简单的C版本的DLL注入程序：

#include <windows.h>

BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
{
    switch (fdwReason)
    {
        case DLL_PROCESS_ATTACH:
            // 在进程中注入DLL
            MessageBox(NULL, "DLL注入成功！", "提示", MB_OK);
            break;

        case DLL_PROCESS_DETACH:
            // 从进程中卸载DLL
            MessageBox(NULL, "DLL卸载成功！", "提示", MB_OK);
            break;

        case DLL_THREAD_ATTACH:
            // 在线程中注入DLL
            break;

        case DLL_THREAD_DETACH:
            // 从线程中卸载DLL
            break;
    }

    return TRUE;
}

这个程序使用了Windows API中的DllMain函数，在进程或线程中注入或卸载DLL。在这个例子中，我们使用了MessageBox函数来显示注入或卸载成功的提示信息。

相关问题

怎么使用.net framework对.net程序实现注入dll 帮我写个c++的例子

注入DLL通常需要在目标进程中创建一个远程线程，然后在远程线程中调用LoadLibrary函数加载DLL，最后调用DLL中的导出函数。以下是一个简单的C++注入DLL的示例代码：

#include <Windows.h>
#include <TlHelp32.h>
#include <iostream>

int main()
{
    // 获取目标进程的句柄
    DWORD processId = 1234; // 目标进程ID
    HANDLE processHandle = OpenProcess(PROCESS_ALL_ACCESS, FALSE, processId);
    if (processHandle == NULL)
    {
        std::cout << "Failed to open process" << std::endl;
        return 1;
    }

    // 获取LoadLibrary函数的地址
    LPVOID loadLibraryAddress = (LPVOID)GetProcAddress(GetModuleHandle("kernel32.dll"), "LoadLibraryA");
    if (loadLibraryAddress == NULL)
    {
        std::cout << "Failed to get LoadLibrary address" << std::endl;
        return 1;
    }

    // 分配内存
    LPVOID remoteMemory = VirtualAllocEx(processHandle, NULL, MAX_PATH, MEM_COMMIT, PAGE_READWRITE);
    if (remoteMemory == NULL)
    {
        std::cout << "Failed to allocate remote memory" << std::endl;
        return 1;
    }

    // 写入DLL路径到目标进程中
    const char* dllPath = "C:\\path\\to\\your\\dll.dll";
    if (!WriteProcessMemory(processHandle, remoteMemory, dllPath, strlen(dllPath) + 1, NULL))
    {
        std::cout << "Failed to write DLL path to remote memory" << std::endl;
        return 1;
    }

    // 创建远程线程并调用LoadLibrary函数
    HANDLE remoteThread = CreateRemoteThread(processHandle, NULL, 0, (LPTHREAD_START_ROUTINE)loadLibraryAddress, remoteMemory, 0, NULL);
    if (remoteThread == NULL)
    {
        std::cout << "Failed to create remote thread" << std::endl;
        return 1;
    }

    // 等待远程线程结束
    WaitForSingleObject(remoteThread, INFINITE);

    // 获取导出函数地址并调用
    const char* functionName = "YourExportFunction";
    FARPROC functionAddress = GetProcAddress(GetModuleHandle("yourdll.dll"), functionName);
    if (functionAddress == NULL)
    {
        std::cout << "Failed to get function address" << std::endl;
        return 1;
    }

    // 调用导出函数
    typedef int (*YourExportFunction)();
    YourExportFunction yourFunction = (YourExportFunction)functionAddress;
    int result = yourFunction();

    std::cout << "Result: " << result << std::endl;

    // 关闭句柄
    CloseHandle(remoteThread);
    VirtualFreeEx(processHandle, remoteMemory, 0, MEM_RELEASE);
    CloseHandle(processHandle);

    return 0;
}

在上面的示例中，我们首先使用OpenProcess函数打开目标进程句柄，然后使用GetProcAddress函数获取LoadLibrary函数的地址。接下来，我们使用VirtualAllocEx函数在目标进程中分配内存，并使用WriteProcessMemory函数将DLL路径写入目标进程中。然后，我们使用CreateRemoteThread函数创建远程线程，并在远程线程中调用LoadLibrary函数来加载DLL。最后，我们使用GetProcAddress函数获取导出函数地址，并调用导出函数。

需要注意的是，在实际的注入过程中，你还需要处理一些异常情况，例如目标进程拥有较高的权限，或者DLL文件不存在等等。此外，在使用CreateRemoteThread函数创建远程线程时，你还需要指定一个适当的起始地址，并在远程线程中调用ExitThread函数结束远程线程。

写一个DLL注入监控目标程序TCP通信的程序

以下是一个简单的DLL注入程序，可以监控目标程序的TCP通信：

#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <tchar.h>
#include <tlhelp32.h>
#include <winsock2.h>

#define DLL_PATH _T("path_to_your_dll")
#define TARGET_PROCESS _T("target_process.exe")

BOOL InjectDll(DWORD pid, LPCTSTR dllPath);
BOOL IsProcessRunning(LPCTSTR processName);
void MonitorTcpTraffic();

int _tmain(int argc, _TCHAR* argv[])
{
    // 检查目标进程是否正在运行
    if (!IsProcessRunning(TARGET_PROCESS))
    {
        printf("Target process is not running.\n");
        return 1;
    }

    // 获取目标进程ID
    DWORD pid = 0;
    PROCESSENTRY32 pe32 = { 0 };
    pe32.dwSize = sizeof(PROCESSENTRY32);
    HANDLE hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    if (hSnapshot != INVALID_HANDLE_VALUE)
    {
        if (Process32First(hSnapshot, &pe32))
        {
            do
            {
                if (_tcscmp(pe32.szExeFile, TARGET_PROCESS) == 0)
                {
                    pid = pe32.th32ProcessID;
                    break;
                }
            } while (Process32Next(hSnapshot, &pe32));
        }
        CloseHandle(hSnapshot);
    }

    if (pid == 0)
    {
        printf("Failed to get target process ID.\n");
        return 1;
    }

    // 注入DLL
    if (!InjectDll(pid, DLL_PATH))
    {
        printf("Failed to inject DLL.\n");
        return 1;
    }

    // 监控TCP通信
    MonitorTcpTraffic();

    return 0;
}

BOOL InjectDll(DWORD pid, LPCTSTR dllPath)
{
    HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, pid);
    if (hProcess == NULL)
    {
        printf("Failed to open target process.\n");
        return FALSE;
    }

    LPVOID pRemoteBuf = VirtualAllocEx(hProcess, NULL, (_tcslen(dllPath) + 1) * sizeof(TCHAR), MEM_COMMIT, PAGE_READWRITE);
    if (pRemoteBuf == NULL)
    {
        printf("Failed to allocate memory in target process.\n");
        CloseHandle(hProcess);
        return FALSE;
    }

    if (!WriteProcessMemory(hProcess, pRemoteBuf, (LPVOID)dllPath, (_tcslen(dllPath) + 1) * sizeof(TCHAR), NULL))
    {
        printf("Failed to write DLL path to target process.\n");
        VirtualFreeEx(hProcess, pRemoteBuf, 0, MEM_RELEASE);
        CloseHandle(hProcess);
        return FALSE;
    }

    HMODULE hKernel32 = GetModuleHandle(_T("Kernel32"));
    if (hKernel32 == NULL)
    {
        printf("Failed to get handle of Kernel32.dll.\n");
        VirtualFreeEx(hProcess, pRemoteBuf, 0, MEM_RELEASE);
        CloseHandle(hProcess);
        return FALSE;
    }

    LPVOID pLoadLibrary = (LPVOID)GetProcAddress(hKernel32, "LoadLibraryW");
    if (pLoadLibrary == NULL)
    {
        printf("Failed to get address of LoadLibraryW.\n");
        VirtualFreeEx(hProcess, pRemoteBuf, 0, MEM_RELEASE);
        CloseHandle(hProcess);
        return FALSE;
    }

    HANDLE hThread = CreateRemoteThread(hProcess, NULL, 0, (LPTHREAD_START_ROUTINE)pLoadLibrary, pRemoteBuf, 0, NULL);
    if (hThread == NULL)
    {
        printf("Failed to create remote thread.\n");
        VirtualFreeEx(hProcess, pRemoteBuf, 0, MEM_RELEASE);
        CloseHandle(hProcess);
        return FALSE;
    }

    WaitForSingleObject(hThread, INFINITE);

    DWORD exitCode = 0;
    GetExitCodeThread(hThread, &exitCode);

    VirtualFreeEx(hProcess, pRemoteBuf, 0, MEM_RELEASE);
    CloseHandle(hThread);
    CloseHandle(hProcess);

    return exitCode != 0;
}

BOOL IsProcessRunning(LPCTSTR processName)
{
    PROCESSENTRY32 pe32 = { 0 };
    pe32.dwSize = sizeof(PROCESSENTRY32);
    HANDLE hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    if (hSnapshot != INVALID_HANDLE_VALUE)
    {
        if (Process32First(hSnapshot, &pe32))
        {
            do
            {
                if (_tcscmp(pe32.szExeFile, processName) == 0)
                {
                    CloseHandle(hSnapshot);
                    return TRUE;
                }
            } while (Process32Next(hSnapshot, &pe32));
        }
        CloseHandle(hSnapshot);
    }
    return FALSE;
}

void MonitorTcpTraffic()
{
    WSADATA wsaData;
    if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0)
    {
        printf("Failed to initialize Winsock.\n");
        return;
    }

    SOCKET s = socket(AF_INET, SOCK_RAW, IPPROTO_IP);
    if (s == INVALID_SOCKET)
    {
        printf("Failed to create raw socket.\n");
        WSACleanup();
        return;
    }

    char buffer[4096];
    int recvSize = 0;
    SOCKADDR_IN local, remote;
    int remoteLen = sizeof(remote);
    while ((recvSize = recvfrom(s, buffer, sizeof(buffer), 0, (SOCKADDR*)&remote, &remoteLen)) != SOCKET_ERROR)
    {
        getsockname(s, (SOCKADDR*)&local, &remoteLen);
        if (remote.sin_addr.S_un.S_addr == local.sin_addr.S_un.S_addr)
        {
            continue; // ignore loopback traffic
        }

        printf("Received %d bytes from %s:%d to %s:%d.\n",
            recvSize,
            inet_ntoa(remote.sin_addr),
            ntohs(remote.sin_port),
            inet_ntoa(local.sin_addr),
            ntohs(local.sin_port));
    }

    closesocket(s);
    WSACleanup();
}

其中，`InjectDll`函数用于注入DLL，并调用其中的入口函数；`IsProcessRunning`函数用于检查目标进程是否正在运行；`MonitorTcpTraffic`函数用于监控TCP通信。在`MonitorTcpTraffic`函数中，我们使用了一个原始套接字来接收所有的IP数据包，并打印出源IP、目标IP、源端口和目标端口。

你可以将你的DLL注入程序编译为32位或64位，并在调试器中运行目标程序，然后启动该DLL注入程序。如果一切正常，你应该能看到目标程序的TCP通信信息被打印出来。注意，这个程序只是一个简单的示例，可能无法满足你的需求，你需要根据你的实际情况进行修改和扩展。