NICE NETCAT

From the description we can see that we will need to use terminal based commands.

WHAT IS NETCAT?

Netcat is a network utility for reading and writing connections using TCP or UDP

LEAD

Typing in the command provided in the terminal, we get the following output

We can see a column of numbers. We should try match them to ascii characters.

FLAG

We are correct, the flag pops out!

picoCTF{g00d_k1tty!_n1c3_k1tty!_5fb5e51d}