Need help with cracking LUKS

[slyexe]

Sounds like you should read this article. It has several explanations of different methods and software to use against LUKS. Remember you will need to identify which VERSION & ENCRYPTION TYPE was used as there is a very diverse selection of LUKS partitions. 

https://diverto.github.io/2019/11/18/Cra...assphrases

https://hashcat.net/wiki/doku.php?id=example_hashes

Once you have the proper extracted data whether using hashcat or john or other software you can supply it your mask attack with abbreviated character set.