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用C++编写远程控制电脑的木马程序
2023-07-03 12:35:40 深夜i     --     --
C++ 远程控制 木马程序 电脑安全 程序设计

远程控制电脑的木马程序是一种恶意软件,它隐藏在系统内部,可以从远程服务器接收指令并执行。这种木马程序可以被黑客用来偷取敏感信息,攻击其他系统或者控制受害者的计算机。在本文中,我们将使用C++编写一个简单的远程控制电脑的木马程序。

第一步是编写客户端程序,客户端程序负责连接远程服务器,接收指令并传递给受害者的计算机。以下是客户端程序的代码:


#include <iostream>

#include <WinSock2.h>

#pragma comment (lib,"ws2_32.lib")

#define DEFAULT_BUFLEN 1024

#define SERVER_ADDR "192.168.1.100"

#define SERVER_PORT 8888

using namespace std;

int main()

{

  WSADATA wsaData;

  SOCKET ConnectSocket = INVALID_SOCKET;

  struct addrinfo* result = NULL,

    * ptr = NULL,

    hints;

  char sendbuf[DEFAULT_BUFLEN];

  char recvbuf[DEFAULT_BUFLEN];

  int iResult;

  int recvbuflen = DEFAULT_BUFLEN;

  // Initialize Winsock

  iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);

  if (iResult != 0)

    cout << "WSAStartup failed: " << iResult << endl;

    return 1;

  

  ZeroMemory(&hints, sizeof(hints));

  hints.ai_family = AF_UNSPEC;

  hints.ai_socktype = SOCK_STREAM;

  hints.ai_protocol = IPPROTO_TCP;

  // Resolve the server address and port

  iResult = getaddrinfo(SERVER_ADDR, "8888", &hints, &result);

  if (iResult != 0) {

    cout << "getaddrinfo failed: " << iResult << endl;

    WSACleanup();

    return 1;

  }

  // Attempt to connect to the first address returned by

  ptr = result;

  ConnectSocket = socket(ptr->ai_family, ptr->ai_socktype, ptr->ai_protocol);

  if (ConnectSocket == INVALID_SOCKET) {

    cout << "Error at socket(): " << WSAGetLastError() << endl;

    freeaddrinfo(result);

    WSACleanup();

    return 1;

  }

  // Connect to server.

  iResult = connect(ConnectSocket, ptr->ai_addr, (int)ptr->ai_addrlen);

  if (iResult == SOCKET_ERROR) {

    closesocket(ConnectSocket);

    ConnectSocket = INVALID_SOCKET;

  }

  // Free address info

  freeaddrinfo(result);

  if (ConnectSocket == INVALID_SOCKET) {

    cout << "Unable to connect to server!" << endl;

    WSACleanup();

    return 1;

  }

  // Receive until the peer closes the connection

  do {

    iResult = recv(ConnectSocket, recvbuf, recvbuflen, 0);

    if (iResult > 0) {

      cout << "Received: " << recvbuf << endl;

      strcpy(sendbuf, "I received the message!");

      send(ConnectSocket, sendbuf, iResult, 0);

    }

    else if (iResult == 0)

      cout << "Connection closing" << endl;

    else

      cout << "recv failed: " << WSAGetLastError() << endl;

  } while (iResult > 0);

  // shutdown the connection since we're done

  iResult = shutdown(ConnectSocket, SD_SEND);

  closesocket(ConnectSocket);

  WSACleanup();

  return 0;

}

代码主要是使用Winsock2库来建立连接和发送接收数据,程序运行后会连接到指定IP地址的服务器,并等待接收指令。当接收到指令时,客户端程序将打印出接收到的消息,并通过连接发送一个确认信息。

第二步是编写服务器端程序,服务器端程序负责向客户端发送指令并接收客户端的响应。以下是服务器端程序的代码:


#include <iostream>

#include <WinSock2.h>

#pragma comment (lib,"ws2_32.lib")

#define DEFAULT_BUFLEN 1024

#define PORT "8888"

using namespace std;

int main()

{

  WSADATA wsaData;

  SOCKET ListenSocket = INVALID_SOCKET;

  SOCKET ClientSocket = INVALID_SOCKET;

  struct addrinfo* result = NULL;

  struct addrinfo hints;

  char recvbuf[DEFAULT_BUFLEN];

  int recvbuflen = DEFAULT_BUFLEN;

  int iResult;

  // Initialize Winsock

  iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);

  if (iResult != 0)

    cout << "WSAStartup failed: " << iResult << endl;

    return 1;

  

  // Setup hints for getaddrinfo

  ZeroMemory(&hints, sizeof(hints));

  hints.ai_family = AF_INET;

  hints.ai_socktype = SOCK_STREAM;

  hints.ai_protocol = IPPROTO_TCP;

  hints.ai_flags = AI_PASSIVE;

  // Resolve the server address and port

  iResult = getaddrinfo(NULL, PORT, &hints, &result);

  if (iResult != 0) {

    cout << "getaddrinfo failed: " << iResult << endl;

    WSACleanup();

    return 1;

  }

  // Create a SOCKET for the server to listen for client connections

  ListenSocket = socket(result->ai_family, result->ai_socktype, result->ai_protocol);

  if (ListenSocket == INVALID_SOCKET) {

    cout << "Error at socket(): " << WSAGetLastError() << endl;

    freeaddrinfo(result);

    WSACleanup();

    return 1;

  }

  // Set up the TCP listening socket

  iResult = bind(ListenSocket, result->ai_addr, (int)result->ai_addrlen);

  if (iResult == SOCKET_ERROR) {

    cout << "bind failed: " << WSAGetLastError() << endl;

    freeaddrinfo(result);

    closesocket(ListenSocket);

    WSACleanup();

    return 1;

  }

  // Free address info

  freeaddrinfo(result);

  // Listen on the socket

  iResult = listen(ListenSocket, SOMAXCONN);

  if (iResult == SOCKET_ERROR) {

    cout << "listen failed: " << WSAGetLastError() << endl;

    closesocket(ListenSocket);

    WSACleanup();

    return 1;

  }

  // Accept a client socket

  ClientSocket = accept(ListenSocket, NULL, NULL);

  if (ClientSocket == INVALID_SOCKET) {

    cout << "accept failed: " << WSAGetLastError() << endl;

    closesocket(ListenSocket);

    WSACleanup();

    return 1;

  }

  // Send an initial message to client

  iResult = send(ClientSocket, "Hello, I'm the server!", 23, 0);

  if (iResult == SOCKET_ERROR) {

    cout << "send failed: " << WSAGetLastError() << endl;

    closesocket(ClientSocket);

    WSACleanup();

    return 1;

  }

  // Receive until the peer closes the connection

  do {

    iResult = recv(ClientSocket, recvbuf, recvbuflen, 0);

    if (iResult > 0)

      cout << "Received: " << recvbuf << endl;

    

    else if (iResult == 0)

      cout << "Connection closing" << endl;

    else

      cout << "recv failed: " << WSAGetLastError() << endl;

  } while (iResult > 0);

  // shutdown the connection since we're done

  iResult = shutdown(ClientSocket, SD_SEND);

  closesocket(ClientSocket);

  WSACleanup();

  return 0;

}

代码主要是使用Winsock2库来建立连接和发送接收数据,程序运行后会绑定本地IP地址和指定端口,等待客户端的连接。当客户端连接成功后,服务器端程序将向客户端发送一条消息,并等待接收客户端的响应。

这是一个简单的远程控制电脑的木马程序示例,程序只是为了演示如何建立连接和发送接收数据,实际上,木马程序可能会更加复杂和深入。因此,我们应该时刻注意计算机安全,保护好自己的系统和个人信息。

  
  

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