Help needed cracking a Mac password

[Banaanhangwagen]

The exact same problem and solution are explained here.
https://hashcat.net/forum/thread-7792.html

The plist2hashcat is a script, so you need to run it. Do some research how. You'll learn a lot.

In order to understand rules, begin here.
https://hashcat.net/wiki/doku.php?id=rule_based_attack

Lowercase and appending 321 will be:

Code:

l $3 $2 $1