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DNP3pot.py
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#! /usr/bin/env python
# DNP3pot - The Industrial Honeypot
#
#Creative Commons 2019 <wachowsky.artur@gmail.com>
#
# 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 2
# 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, write to the Free Software
# Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
"""
DNP3 Lib based on DNP3Lib.py [https://github.com/nrodofile/ScapyDNP3_lib]
Original author: Nicholas Rodofile
"""
import signal
import sys
import time
import collections
import select
import socket
import os
import chardet
import thread
import multiprocessing
from scapy.all import *
import DNP3_Lib
import logging
def listen(Ip,DNP3port):
p.start()
while 1:
try:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 3) # this puts socket in time_wait state make server avaiable for starvatioins and itteration attacks
s.bind((Ip,DNP3port))
s.listen(5)
except socket.error:
exit(1)
conn, addr = s.accept()
logger.info('New connection from {}'.format(addr))
print('Received connection from {}'.format(addr))
try:
thread.start_new_thread(new,(conn,addr))
except:
print('Terrible Error!')
import traceback
traceback.print_exc()
print("cannot bind port :(")
exit(1)
def scapy():
sniff(filter="host "+Ip+" and tcp port "+str(DNP3port)+" and greater 50", prn=packet_callback, store=0)
#Packet Inspection
def new(conn,addr):
msg = conn.recv(2048)
try:
conn.send(banner)
time.sleep(1.02)
conn.close()
except TypeError:
conn.close()
if not len(str(msg)) == 0:
encoding = chardet.detect(msg)['encoding']
#print('Raw data recieved from {} rawdata: {} encoding: {}'.format(addr,msg,encoding))
logger.info('Raw data recieved from {} rawdata: {} encoding: {}'.format(addr,msg,encoding))
#TODO FullPacket
else:
#time.sleep(0.52)
conn.close()
return
#DNP3 SCAPY FILTER
def packet_callback(pkt):
if pkt.haslayer(IP) and pkt[IP].dport == DNP3port and pkt[IP].dst == Ip and pkt.haslayer(DNP3):
if pkt[TCP].payload:
p = str(pkt.summary()) #pkt.show() #Debug pkt[RAW].load
else:
p = 'No payload'
logger.info('DNP3 application layer detected - No Payload src {} dport {} dst {} sval {} chcval {} DFCval {}'.format(pkt[IP].src, pkt[IP].dport, pkt[IP].dst,pkt.START,pkt.LENGTH,pkt.CONTROL.FCV))
#print('DNP3 application layer detected - No Payload src {} dport {} dst {} sval {} chcval {} DFCval {}'.format(pkt[IP].src, pkt[IP].dport, pkt[IP].dst,pkt.START,pkt.LENGTH,pkt.CONTROL.FCV))
if not p == 'No payload':
logger.info('DNP3 application layer detected - Payload: {} src {} dport {} dst {} sval {} chcval {}'.format(p, pkt[IP].src, pkt[IP].dport, pkt[IP].dst,pkt.START,pkt.LENGTH))
#print('DNP3 application layer detected - Payload:{} src {} dport {} dst {} sval {} chcval {} DFCval {}'.format(p, pkt[IP].src, pkt[IP].dport, pkt[IP].dst,pkt.START,pkt.LENGTH,pkt.CONTROL.FCV))
''' Pseudo Transport Layer Check '''
if pkt.haslayer(DNP3_Lib.DNP3Transport):
#print('DNP3 transport layer detected src {} dport {} dst {} FIN BIT {} FIR BIT {}'.format(pkt[IP].src, pkt[IP].dport, pkt[IP].dst,pkt.FIN,pkt.FIR))
logger.info('DNP3 transport layer detected src {} dport {} dst {} FIN BIT {} FIR BIT {}'.format(pkt[IP].src, pkt[IP].dport, pkt[IP].dst,pkt.FIN,pkt.FIR))
''' Function codes check '''
if (pkt.haslayer(DNP3_Lib.DNP3ApplicationRequest)):
if pkt.FUNC_CODE is not None:
if (pkt.FUNC_CODE >= 0 and pkt.FUNC_CODE <= 33):
logger.critical('\n DNP3 Function code {} detected {} ----{}----> {}:\n'.format(pkt.FUNC_CODE, pkt[IP].src, pkt[IP].dport, pkt[IP].dst))
#print('detected function code0: '+ str(pkt.FUNC_CODE))
send(response)
if (pkt.FUNC_CODE > 33 and pkt.FUNC_CODE < 129):
logger.critical('\n DNP3 OUT OF RANGE Function code {} detected {} ----{}----> {}:\n'.format(pkt.FUNC_CODE, pkt[IP].src, pkt[IP].dport, pkt[IP].dst))
#print('detected function code1: '+ str(pkt.FUNC_CODE))
if (pkt.FUNC_CODE >= 129 and pkt.FUNC_CODE <= 131):
logger.critical('\n DNP3 Function code {} detected {} ----{}----> {}:\n'.format(pkt.FUNC_CODE, pkt[IP].src, pkt[IP].dport, pkt[IP].dst))
#print('detected function code2: '+ str(pkt.FUNC_CODE))
send(response)
if (pkt.FUNC_CODE < 0 and pkt.FUNC_CODE > 131):
logger.critical('\n DNP3 OUT OF RANGE Function code {} detected {} ----{}----> {}:\n'.format(pkt.FUNC_CODE, pkt[IP].src, pkt[IP].dport, pkt[IP].dst))
#print('detected function code3: '+ str(pkt.FUNC_CODE))
if __name__ == "__main__":
print('Initialised')
global s
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # Super smart way to go around the most annoying globa error eva!
# Logging configuration
global logger
logger = logging.getLogger(__name__)
logging.getLogger("scapy.runtime").setLevel(logging.ERROR)
logger.setLevel(logging.INFO)
handler = logging.FileHandler('/var/log/dnp3pot.log')
handler.setLevel(logging.INFO)
formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s\n')
handler.setFormatter(formatter)
logger.addHandler(handler)
global p
p = multiprocessing.Process(target=scapy)
global DNP3
DNP3 = DNP3_Lib.DNP3 #Reference to DNP3 class defined in DNP3_Lib
DNP3port = 20000
global Ip
Ip = os.popen('ip addr show eth0').read().split("inet ")[1].split("/")[0]
bind_layers(TCP, DNP3, dport = DNP3port)
bind_layers(TCP, DNP3, sport = DNP3port)
global response
global banner
banner = '\x05\x64\x0A\x00\x01\x00\x05\x00\x39\x71\xC0\xF4\x82\x00\x00\x6F\xBA'
response = IP()/TCP()/'\x05\x64\x0A\x00\x01\x00\x05\x00\x39\x71\xC0\xF4\x82\x00\x00\x6F\xBA'
try:
listen(Ip,DNP3port)
except KeyboardInterrupt:
print('\nInterrupted')
s.close()
p.join()
sys.exit(0)