Reverse ICMP Shell - https://github.com/commonexploits/icmpsh

One-liners - http://bernardodamele.blogspot.com/2011/09/reverse-shells-one-liners.html

Upgrading to TTY - https://blog.ropnop.com/upgrading-simple-shells-to-fully-interactive-ttys/

Cheatsheet - http://pentestmonkey.net/cheat-sheet/shells/reverse-shell-cheat-sheet

• More - https://highon.coffee/blog/reverse-shell-cheat-sheet/

Netcat

• https://neverendingsecurity.wordpress.com/2015/04/13/netcat-commands-cheatsheet/

• https://www.securitaus.org/netcat/pentest/2016/05/23/netcat-cheat-sheet.html