unrar multiple files wity multiple files

I have 1000s of rar files and list of password in txt. i want to unrar all those files trying all passwords. Tried:

for file in "$(ls *.rar)"; do for f in "$(cat pass.txt)"; do unrar x -p"${f} "${file}; done; done

But not working. Tried it with unrar 7za but still fails