First off, many thanks to the wonderful community here on nullbyte, who sparked in me the interest towards hacking and security research.
Recently I discovered something which I find quite interesting :
In my school, all the PCs ( Win 7 ) in the labs allow only guest access to students, and even then, the option of changing the desktop wallpaper has been disabled for normal users.(Don't know how, but the Personalize menu ( right click -> Personalize) states that "One or more of the settings on this page has been disabled by the System Administrator.") .
Now, even after this restriction, if I open an image in Firefox and then right click -> set as background, it is able to change the background .
Now, is there a way to reverse engineer the Firefox app and find a way to bypass the admin privileges needed to make serious changes to a system.
Just thought it might be possible, but don't know how to proceed.
Please guide me on how to investigate further in this direction.
Thanks for reading along,