I'm trying to use volatility3 for a ctf challenge, but I am getting errors right after installing. I installed volatility in a virtual environment created with venv, as installing Python packages system-wide is not considered good practice anymore on Ubuntu (as I understand it).

I first tried running the same 2 commands on the .mem file I got from the CTF, but I got largely the same errors. Then I created a hopefully not corrupt and proper memory dump with sudo gcore [pid] from one of my running Chromium processes and the exact same thing happened. This is the memory file I used when I got the errors in the next paragraph.

When I try running vol -f core.[pid] imageinfo, I get the error vol: error: argument PLUGIN: invalid choice imageinfo (choose from banners.Banners, .... When I run vol -vvvvv -f core.[pid] linux.pslist, I get this error.

I have downloaded the linux.zip symbols file from github and moved it without extracting to the symbols folder, that is, the folder in my virtual environment folder under python3.12/site-packages/volatility3/symbols. I am running Ubuntu 24.04 and Python 3.12. According to a previous error message I saw with -vvvvv, I have also installed yara-x via pip. This didn't really change anything.

Could anyone help me?