Hie Hf it is my first tut here i hope it will help some noobs :

Lets Start:
Here I will use my site just to show you how u can upload shell in mybb sites:

Go to the admin panel :site.com/admin:



username:ImNotGoing To show here
pass:yourpass

Now we are inside the mybb control panel:


Now go to >>Themes and Style

and import this xml file:

and click on Import Theme:



you will see this page:



One your xml file imported successfully go to the main page and click on usercp and click on edit option:



and now select your uploaded xml:



now you will see this up loader:



upload your shell and browse :




__

Lets do some Hacking With symlink:

Click on symlink :


you will see the list of all the website hosted on the same server :



select your target website :
I'm selection a wordpress site :
click on symlink at the right side to the domain name:
you will see something like this:


now click on wp-config.php /*it is for wordpress */

you will see the database name , username ,host and pass in wp-config.php note the details and click on tools over the upper side of your shell you will see a page something like this:



Fill it with the details u got from wp-config.php
it will change the password of the admin panel:
Once your password has been changed login into the admin panel here:
target_site_.com/wp-admin

and now go to the Appearance and edit theme:


select theme Im selecting twentytwelve now edit 404 Template
(404.php ) and paste your shell here:



and now browse your shell here:

Quote:target_site_.com/wp-content/themes/twentytwelve/404.php

I hope you understand have any question regarding security pm me.
In next tut i will show u how you can prevent your site from simlink:

Thankyou