This shell would be a nice addition to the webshells package.

• [Name] - phpbash webshell
• [Version] - latest, there is no git tag
• [Homepage] - https://github.com/Arrexel/phpbash
• [Download] - https://github.com/Arrexel/phpbash
• [Author] - Arrexel (https://github.com/Arrexel)
• [Licence] - Apache License 2.0
• [Description] - phpbash is a standalone, semi-interactive web shell. It's main purpose is to assist in penetration tests where traditional reverse shells are not possible. The design is based on the default Kali Linux terminal colors, so pentesters should feel right at home.
• [Dependencies] - Javascript must be enabled on the client browser for phpbash to work properly. The target machine must also allow execution of the shell_exec PHP function, although it is very simple to modify the script to use an alternate function.
• [Similar tools] - Other kinds of PHP backdoors but this is the first time I've seen one that simulates a terminal
• [Activity] - Project started < 1 year ago and last updated 9 months ago
• [How to install]
  wget https://raw.githubusercontent.com/Arrexel/phpbash/master/phpbash.min.php
  OR
  wget https://raw.githubusercontent.com/Arrexel/phpbash/master/phpbash.php
• [How to use] - Upload it to the vulnerable php server and then browse to it. See the screenshots on https://github.com/Arrexel/phpbash