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

Terminal - Create a Bash command server - You can send it scripts or commands to execute
while ( nc -l 1025 | bash &> : ) ; do : ; done &
2012-01-08 03:31:58
User: Zulu
Functions: bash
Create a Bash command server - You can send it scripts or commands to execute

Allow to launch nc like a daemon, in background until you still stop it.

(like this command: http://www.commandlinefu.com/commands/view/9978 )

For send script or commands from the client to the server, use nc too, like that :

cat script.sh | 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" .


There are 2 alternatives - vote for the best!

Terminal - Alternatives

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What others think

Beware, this is a major security risk. Anyone can connect and run arbitrary commands on the server.

Comment by Fudo 203 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.

Comment by NathanielMaier 203 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.

Comment by Zulu 202 weeks ago

Your point of view

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