Create a Bash command server - You can send it scripts or commands to execute

while ( nc -l 1025 | bash &> : ) ; do : ; done &
Allow to launch nc like a daemon, in background until you still stop it. (like this command: ) For send script or commands from the client to the server, use nc too, like that : cat | nc server 1025 echo "service openvpn restart" | nc server 1025 The loop's inside doesn't do anything, but we can add echo -e "\nCommand received\n" .
Sample Output
$$ (commande PID)

By: Zulu
2012-01-08 03:31:58

What Others Think

Beware, this is a major security risk. Anyone can connect and run arbitrary commands on the server.
Fudo · 507 weeks ago
Yep, I completely agree with Fudo - there's more risk than benefit with something like this. You can easily use ssh to remotely execute commands. And with public key authentication, it can still be done without entering a password each time. By running this command, you're in essence turning any local privilege escalation vulnerability into a remote privilege escalation vulnerability. Not good.
NathanielMaier · 507 weeks ago
What do you think about : while ( nc -l 1025 | grep -h "^echo" | bash &> : ) ; do : ; done & It's the same thing but it will only let pass echo command.
Zulu · 506 weeks and 1 day ago
These commands are very much useful in building code and it really helped me to make a code for my blogs. I am really hoping for the best of the tutorials in the coming days.
BrendaMadden · 54 weeks and 6 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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