1d8d43b2dSKristof Provost#!/usr/bin/env python3 2d8d43b2dSKristof Provost# 34d846d26SWarner Losh# SPDX-License-Identifier: BSD-2-Clause 4d8d43b2dSKristof Provost# 5d8d43b2dSKristof Provost# Copyright (c) 2021 Rubicon Communications, LLC (Netgate) 6d8d43b2dSKristof Provost# 7d8d43b2dSKristof Provost# Redistribution and use in source and binary forms, with or without 8d8d43b2dSKristof Provost# modification, are permitted provided that the following conditions 9d8d43b2dSKristof Provost# are met: 10d8d43b2dSKristof Provost# 1. Redistributions of source code must retain the above copyright 11d8d43b2dSKristof Provost# notice, this list of conditions and the following disclaimer. 12d8d43b2dSKristof Provost# 2. Redistributions in binary form must reproduce the above copyright 13d8d43b2dSKristof Provost# notice, this list of conditions and the following disclaimer in the 14d8d43b2dSKristof Provost# documentation and/or other materials provided with the distribution. 15d8d43b2dSKristof Provost# 16d8d43b2dSKristof Provost# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17d8d43b2dSKristof Provost# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18d8d43b2dSKristof Provost# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19d8d43b2dSKristof Provost# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20d8d43b2dSKristof Provost# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21d8d43b2dSKristof Provost# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22d8d43b2dSKristof Provost# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23d8d43b2dSKristof Provost# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24d8d43b2dSKristof Provost# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25d8d43b2dSKristof Provost# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26d8d43b2dSKristof Provost# SUCH DAMAGE. 27d8d43b2dSKristof Provost 28d8d43b2dSKristof Provostimport argparse 29d8d43b2dSKristof Provostimport logging 30d8d43b2dSKristof Provostlogging.getLogger("scapy").setLevel(logging.CRITICAL) 31d8d43b2dSKristof Provostimport scapy.all as sp 32d8d43b2dSKristof Provost 33d8d43b2dSKristof Provostdef syn_flood(args): 34d8d43b2dSKristof Provost s = sp.conf.L2socket(iface=args.sendif[0]) 35d8d43b2dSKristof Provost 36d8d43b2dSKristof Provost # Set a src mac, to avoid doing lookups which really slow us down. 37d8d43b2dSKristof Provost ether = sp.Ether(src='01:02:03:04:05') 38*1fd8c845SKristof Provost if args.ip6: 39*1fd8c845SKristof Provost ip = sp.IPv6(dst=args.to[0]) 40*1fd8c845SKristof Provost else: 41d8d43b2dSKristof Provost ip = sp.IP(dst=args.to[0]) 42d8d43b2dSKristof Provost for i in range(int(args.count[0])): 43d8d43b2dSKristof Provost tcp = sp.TCP(flags='S', sport=1+i, dport=22, seq=500+i) 44d8d43b2dSKristof Provost pkt = ether / ip / tcp 45d8d43b2dSKristof Provost s.send(pkt) 46d8d43b2dSKristof Provost 47d8d43b2dSKristof Provostdef main(): 48d8d43b2dSKristof Provost parser = argparse.ArgumentParser("pft_synflood.py", 49d8d43b2dSKristof Provost description="SYN flooding tool") 50*1fd8c845SKristof Provost parser.add_argument('--ip6', 51*1fd8c845SKristof Provost action='store_true', 52*1fd8c845SKristof Provost help='Use IPv6 rather than IPv4') 53d8d43b2dSKristof Provost parser.add_argument('--sendif', nargs=1, 54d8d43b2dSKristof Provost required=True, 55d8d43b2dSKristof Provost help='The interface through which the packet(s) will be sent') 56d8d43b2dSKristof Provost parser.add_argument('--to', nargs=1, 57d8d43b2dSKristof Provost required=True, 58d8d43b2dSKristof Provost help='The destination IP address for the SYN packets') 59d8d43b2dSKristof Provost parser.add_argument('--count', nargs=1, 60d8d43b2dSKristof Provost required=True, 61d8d43b2dSKristof Provost help='The number of packets to send') 62d8d43b2dSKristof Provost 63d8d43b2dSKristof Provost args = parser.parse_args() 64d8d43b2dSKristof Provost 65d8d43b2dSKristof Provost syn_flood(args) 66d8d43b2dSKristof Provost 67d8d43b2dSKristof Provostif __name__ == '__main__': 68d8d43b2dSKristof Provost main() 69