SMTP-Brute-Force.py

#!/usr/bin/python

###########################################################################
#SMTP Brute Force                                                         #
#                                                                         #
#Enumerates users in SMTP mail servers via brute force VRFY requests      #   
#                                                                         # 
#                                                                         #       
#Copyright (C) 2013 Joshua Wang | joshua[dot]wang[dot]90[at]gmail[dot]com #
#Twitter - http://twitter.com/conceptofproof                              #
#Blog - http://conceptofproof.wordpress.com                               #
###########################################################################
/*test*/
import socket
import os
import sys
import re

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

if len(sys.argv)!=3:
  print 'Usage: SMTP-Brute-Force.py {target specification} [username list]'
  print 'example: ./SMTP-Brute-Force.py 192.168.11.215 users.txt'
else:
  print "[*] Connecting to " + sys.argv[1]
  f=open(sys.argv[2],"r")
  print "[*] Enumerating users:\n"
  count = 0
  for line in f:
    if count==8:
      count = 0
      s.close()
    else:
      if count==0:
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
	s.connect((sys.argv[1],25))
      s.send('VRFY'+line)
      result = s.recv(2048)
      if "@" in result:	
        delimlist = result.split(" ")
	matchlist = filter(lambda x:re.search('@',x),delimlist)
	print matchlist[0]
      count+=1
  print 'done!'
  s.close()