PRET VS RustScan

So i decided to tinker a bit before spending a shitload of money into toners or new printers, i'm using this tool to try access and issuing commands to the printer, the connection gets succesfully enstablished. After that i can issue commands in three different languages: PS and PJL doesn't seem to do anything, with PCL at least i see a Device: Unknown printer but all the commands i issue seem to simply not be taken in consideration from the printer, in any of the 3 languages, giving a Command execution failed (timed out) error.

my friend that owns a coffee shop asked me to poke around on his network to look for vulnerabilities in exchange for some free coffees and i saw that they had 9100 open, wasn't familiar with it so played around and found out about PRET which gave me access to his HP printer, with transversal you can gain access to the file system etc and from what i read you can open a root shell on another port, would the scope be limited to the printer, or can the printer be used as a vector to gain access to other systems connecting to said printer?

Preferable you don't want it accessible from the internet at all. Using stuff like the Printer Exploitation Toolkit (PRET), people can get up to some nasty stuff on a public accessible (insecure) printer : https://github.com/RUB-NDS/PRET

You'll love PRET then. It can also brick printers and do all kinds of other fun stuff with them.

Printer exploit framework: https://github.com/RUB-NDS/PRET

Printer Exploitation Toolkit (PRET) - Tool for printer security testing capable of IP and USB connectivity, fuzzing, and exploitation of PostScript, PJL, and PCL printer language features.

I will be giving CEH Practical exam in the next month and I can't find whether Rustscan is allowed or not. I have read EC-Council is very particular about the tools used so I want to be sure whether to implement in my prepartion or not.

I’m not sure why I decided to create it, I think I tried to use RustScan for a simple task last week, but it was too convoluted for my needs, as well as the fact that it requires nmap to be installed. Thus havn was born, nothing else needed, and only directly using two dependencies, Tokio and Clap, although I think If I really wanted to, I could remove the Clap dependency, but it’s just so handy and easy to use.

Did you read https://github.com/RustScan/RustScan, find the link to https://github.com/RustScan/RustScan/wiki/Installation-Guide and came across "Docker is the recommended way of installing RustScan"?

I like RustScan https://github.com/RustScan/RustScan . For one thing, it’s fast!