This is a mini-php backdoor shell. It has a PHP encoder/decoder, mail bombing functionality, reverse shell, cPanel cracker, and more.
You can download it from the following link: https://packetstormsecurity.com/files/download/119233/indrajith-2.0.txt
Source: https://packetstormsecurity.com/files/119233/Indrajith-Mini-Shell-2.0.html