Learning hashcat
(11-15-2020, 10:29 PM)n0ss Wrote: Most of the routers in my scope have default password that are : 18 characters in length, lower-UPPER-DIGIT only.

You can do the math yourself. It's infeasible.
@ undeath, that is a good point and I fully agree. And that lead us to the conclusion:
"If you are not able to retrieve the default(!) PSK from a CLIENT or a known algorithm, give it up!"