1*d8d43b2dSKristof Provost#!/usr/bin/env python3 2*d8d43b2dSKristof Provost# 3*d8d43b2dSKristof Provost# SPDX-License-Identifier: BSD-2-Clause-FreeBSD 4*d8d43b2dSKristof Provost# 5*d8d43b2dSKristof Provost# Copyright (c) 2021 Rubicon Communications, LLC (Netgate) 6*d8d43b2dSKristof Provost# 7*d8d43b2dSKristof Provost# Redistribution and use in source and binary forms, with or without 8*d8d43b2dSKristof Provost# modification, are permitted provided that the following conditions 9*d8d43b2dSKristof Provost# are met: 10*d8d43b2dSKristof Provost# 1. Redistributions of source code must retain the above copyright 11*d8d43b2dSKristof Provost# notice, this list of conditions and the following disclaimer. 12*d8d43b2dSKristof Provost# 2. Redistributions in binary form must reproduce the above copyright 13*d8d43b2dSKristof Provost# notice, this list of conditions and the following disclaimer in the 14*d8d43b2dSKristof Provost# documentation and/or other materials provided with the distribution. 15*d8d43b2dSKristof Provost# 16*d8d43b2dSKristof Provost# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17*d8d43b2dSKristof Provost# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18*d8d43b2dSKristof Provost# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19*d8d43b2dSKristof Provost# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20*d8d43b2dSKristof Provost# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21*d8d43b2dSKristof Provost# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22*d8d43b2dSKristof Provost# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23*d8d43b2dSKristof Provost# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24*d8d43b2dSKristof Provost# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25*d8d43b2dSKristof Provost# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26*d8d43b2dSKristof Provost# SUCH DAMAGE. 27*d8d43b2dSKristof Provost 28*d8d43b2dSKristof Provostimport argparse 29*d8d43b2dSKristof Provostimport logging 30*d8d43b2dSKristof Provostlogging.getLogger("scapy").setLevel(logging.CRITICAL) 31*d8d43b2dSKristof Provostimport scapy.all as sp 32*d8d43b2dSKristof Provost 33*d8d43b2dSKristof Provostdef syn_flood(args): 34*d8d43b2dSKristof Provost s = sp.conf.L2socket(iface=args.sendif[0]) 35*d8d43b2dSKristof Provost 36*d8d43b2dSKristof Provost # Set a src mac, to avoid doing lookups which really slow us down. 37*d8d43b2dSKristof Provost ether = sp.Ether(src='01:02:03:04:05') 38*d8d43b2dSKristof Provost ip = sp.IP(dst=args.to[0]) 39*d8d43b2dSKristof Provost for i in range(int(args.count[0])): 40*d8d43b2dSKristof Provost tcp = sp.TCP(flags='S', sport=1+i, dport=22, seq=500+i) 41*d8d43b2dSKristof Provost pkt = ether / ip / tcp 42*d8d43b2dSKristof Provost s.send(pkt) 43*d8d43b2dSKristof Provost 44*d8d43b2dSKristof Provostdef main(): 45*d8d43b2dSKristof Provost parser = argparse.ArgumentParser("pft_synflood.py", 46*d8d43b2dSKristof Provost description="SYN flooding tool") 47*d8d43b2dSKristof Provost parser.add_argument('--sendif', nargs=1, 48*d8d43b2dSKristof Provost required=True, 49*d8d43b2dSKristof Provost help='The interface through which the packet(s) will be sent') 50*d8d43b2dSKristof Provost parser.add_argument('--to', nargs=1, 51*d8d43b2dSKristof Provost required=True, 52*d8d43b2dSKristof Provost help='The destination IP address for the SYN packets') 53*d8d43b2dSKristof Provost parser.add_argument('--count', nargs=1, 54*d8d43b2dSKristof Provost required=True, 55*d8d43b2dSKristof Provost help='The number of packets to send') 56*d8d43b2dSKristof Provost 57*d8d43b2dSKristof Provost args = parser.parse_args() 58*d8d43b2dSKristof Provost 59*d8d43b2dSKristof Provost syn_flood(args) 60*d8d43b2dSKristof Provost 61*d8d43b2dSKristof Provostif __name__ == '__main__': 62*d8d43b2dSKristof Provost main() 63