(Warning this is CTF CODE !!!1)
Phar + JPG Polyglot generator and playground
# Edit the phar_jpg_polyglot.php and run it to create the polyglot with phar inside
php -c php.ini phar_jpg_polyglot.php# test it by running
php test_phar_inject.php out.jpg
Code stolen from inspired by PHPGGC: PHP Generic Gadget Chains