Backdoors/Web Shells
- http://pentestmonkey.net/cheat-sheet/shells/reverse-shell-cheat-sheet
- https://highon.coffee/blog/reverse-shell-cheat-sheet/
- http://pentestmonkey.net/tools/web-shells/php-reverse-shell
- http://pentestmonkey.net/tools/web-shells/perl-reverse-shell
- https://github.com/bartblaze/PHP-backdoors
- https://github.com/BlackArch/webshells
- https://github.com/tennc/webshell/tree/master/php/b374k
- https://github.com/tennc/webshell/tree/master/php/PHPshell/c99shell
- http://www.acunetix.com/blog/articles/web-shells-101-using-php-introduction-web-shells-part-2/
- http://securityweekly.com/2011/10/23/python-one-line-shell-code/