85 lines
2.0 KiB
Ruby
85 lines
2.0 KiB
Ruby
require 'msf/core'
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require 'rex/proto/natpmp'
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class Metasploit3 < Msf::Auxiliary
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include Msf::Auxiliary::Report
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include Msf::Auxiliary::Scanner
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def initialize
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super(
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'Name' => 'NAT-PMP External Address Scanner',
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'Description' => 'Scan NAT devices for their external address using NAT-PMP',
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'Author' => 'Jon Hart <jhart[at]spoofed.org>',
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'License' => MSF_LICENSE
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)
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register_options(
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[
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Opt::RPORT(Rex::Proto::NATPMP::DefaultPort),
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Opt::CHOST
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],
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self.class
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)
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end
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def run_host(host)
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begin
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udp_sock = Rex::Socket::Udp.create({
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'LocalHost' => datastore['CHOST'] || nil,
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'Context' => {'Msf' => framework, 'MsfExploit' => self}
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})
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add_socket(udp_sock)
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print_status "#{host}:#{datastore['RPORT']} - NATPMP - Probing for external address" if (datastore['VERBOSE'])
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udp_sock.sendto(Rex::Proto::NATPMP.external_address_request, host, datastore['RPORT'].to_i, 0)
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while (r = udp_sock.recvfrom(12, 1.0) and r[1])
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handle_reply(host, r)
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end
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rescue ::Interrupt
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raise $!
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rescue ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Rex::ConnectionRefused
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nil
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rescue ::Exception => e
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print_error("#{host}:#{datastore['RPORT']} Unknown error: #{e.class} #{e}")
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end
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end
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def handle_reply(host, pkt)
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return if not pkt[1]
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if(pkt[1] =~ /^::ffff:/)
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pkt[1] = pkt[1].sub(/^::ffff:/, '')
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end
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(ver, op, result, epoch, external_address) = Rex::Proto::NATPMP.parse_external_address_response(pkt[0])
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if (result == 0)
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print_status("#{host} -- external address #{external_address}")
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end
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# report the host we scanned as alive
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report_host(
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:host => host,
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:state => Msf::HostState::Alive
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)
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# also report its external address as alive
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if inside_workspace_boundary(external_address)
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report_host(
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:host => external_address,
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:state => Msf::HostState::Alive
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)
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end
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# report NAT-PMP as being open
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report_service(
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:host => host,
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:port => pkt[2],
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:proto => 'udp',
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:name => 'natpmp',
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:state => Msf::ServiceState::Open
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)
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end
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end
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