In this module you’re asked to RDP into an attack box your employer has set up for you on their internal network so you can enumerate as an attacker with a foothold could. I successfully log into the parrot attack box and try to use the wireshark in the gui but it will not open at all, when I try in a terminal it does open as htb-student but no traffic is shown at all likely because not root but when try as root wireshark will not open at all
Just wanted to respond to this since I had the same issue and needed to find the fix.
TL;DR
$ export XAUTHORITY=~/.Xauthority
More detailed explanation for why this is the fix here: debian - Why can't I run GUI apps as root: "No protocol specified"? - Unix & Linux Stack Exchange
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