List Block Devices

lsblk

Decrypt LUKS drive

sudo cryptsetup luksOpen /dev/sdaX STORAGE

Mount

sudo mount /dev/mapper/STORAGE /media/voidranjer/STORAGE

Configure Samba

sudo vim /etc/samba/smb.conf

[sambashare]
   comment = Samba File Share
   path = /media/voidranjer/STORAGE
   read only = no
   browsable = yes

Install and Configure Samba | Ubuntu