BruteShark is now capable of extracting Kerberos tickets (TGS-REP ticket only at this point).
That functionality is in addition to the ability of parsing Kerberos authentication hashes (AS-REQ).
An export option to a Hashcat format was also provided in this version.
Use -m 13100 to crack the TGS Rep Hashes
and -m 7500 to crack authentication hashes (AS-REQ)