116 lines
3.4 KiB
Ruby
116 lines
3.4 KiB
Ruby
##
|
|
# This file is part of the Metasploit Framework and may be subject to
|
|
# redistribution and commercial restrictions. Please see the Metasploit
|
|
# web site for more information on licensing and terms of use.
|
|
# http://metasploit.com/
|
|
##
|
|
|
|
require 'msf/core'
|
|
require 'rex/proto/natpmp'
|
|
|
|
class Metasploit3 < Msf::Auxiliary
|
|
|
|
include Msf::Auxiliary::Report
|
|
include Msf::Auxiliary::Scanner
|
|
|
|
def initialize
|
|
super(
|
|
'Name' => 'NAT-PMP Port Mapper',
|
|
'Description' => 'Map (forward) TCP and UDP ports on NAT devices using NAT-PMP',
|
|
'Author' => 'Jon Hart <jhart[at]spoofed.org>',
|
|
'License' => MSF_LICENSE
|
|
)
|
|
|
|
register_options(
|
|
[
|
|
Opt::LPORT,
|
|
Opt::RPORT,
|
|
OptInt.new('NATPMPPORT', [true, "NAT-PMP port to use", Rex::Proto::NATPMP::DefaultPort]),
|
|
OptInt.new('LIFETIME', [true, "Time in ms to keep this port forwarded", 3600000]),
|
|
OptEnum.new('PROTOCOL', [true, "Protocol to forward", 'TCP', %w(TCP UDP)]),
|
|
Opt::CHOST
|
|
],
|
|
self.class
|
|
)
|
|
end
|
|
|
|
def run_host(host)
|
|
begin
|
|
|
|
udp_sock = Rex::Socket::Udp.create({
|
|
'LocalHost' => datastore['CHOST'] || nil,
|
|
'Context' => {'Msf' => framework, 'MsfExploit' => self}
|
|
})
|
|
add_socket(udp_sock)
|
|
|
|
# get the external address first
|
|
vprint_status "#{host} - NATPMP - Probing for external address"
|
|
req = Rex::Proto::NATPMP.external_address_request
|
|
udp_sock.sendto(req, host, datastore['NATPMPPORT'], 0)
|
|
external_address = nil
|
|
while (r = udp_sock.recvfrom(12, 1) and r[1])
|
|
(ver, op, result, epoch, external_address) = Rex::Proto::NATPMP.parse_external_address_response(r[0])
|
|
end
|
|
|
|
vprint_status "#{host} - NATPMP - Sending mapping request"
|
|
# build the mapping request
|
|
req = Rex::Proto::NATPMP.map_port_request(
|
|
datastore['LPORT'].to_i, datastore['RPORT'].to_i,
|
|
Rex::Proto::NATPMP.const_get(datastore['PROTOCOL']), datastore['LIFETIME']
|
|
)
|
|
# send it
|
|
udp_sock.sendto(req, host, datastore['NATPMPPORT'], 0)
|
|
# handle the reply
|
|
while (r = udp_sock.recvfrom(16, 1) and r[1])
|
|
handle_reply(Rex::Socket.source_address(host), host, external_address, r)
|
|
end
|
|
rescue ::Interrupt
|
|
raise $!
|
|
rescue ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Rex::ConnectionRefused
|
|
nil
|
|
rescue ::Exception => e
|
|
print_error("Unknown error: #{e.class} #{e.backtrace}")
|
|
end
|
|
end
|
|
|
|
def handle_reply(map_target, host, external_address, pkt)
|
|
return if not pkt[1]
|
|
|
|
if(pkt[1] =~ /^::ffff:/)
|
|
pkt[1] = pkt[1].sub(/^::ffff:/, '')
|
|
end
|
|
|
|
(ver, op, result, epoch, internal_port, external_port, lifetime) = Rex::Proto::NATPMP.parse_map_port_response(pkt[0])
|
|
|
|
if (result == 0)
|
|
if (datastore['RPORT'].to_i != external_port)
|
|
print_status( "#{external_address} " +
|
|
"#{datastore['RPORT']}/#{datastore['PROTOCOL']} -> #{map_target} " +
|
|
"#{internal_port}/#{datastore['PROTOCOL']} couldn't be forwarded")
|
|
end
|
|
print_status( "#{external_address} " +
|
|
"#{external_port}/#{datastore['PROTOCOL']} -> #{map_target} " +
|
|
"#{internal_port}/#{datastore['PROTOCOL']} forwarded")
|
|
end
|
|
|
|
# report NAT-PMP as being open
|
|
report_service(
|
|
:host => host,
|
|
:port => pkt[2],
|
|
:proto => 'udp',
|
|
:name => 'natpmp',
|
|
:state => Msf::ServiceState::Open
|
|
)
|
|
|
|
# report the external port as being open
|
|
if inside_workspace_boundary(external_address)
|
|
report_service(
|
|
:host => external_address,
|
|
:port => external_port,
|
|
:proto => datastore['PROTOCOL'].to_s.downcase,
|
|
:state => Msf::ServiceState::Open
|
|
)
|
|
end
|
|
end
|
|
end
|