Add Kerberos keytab module

[adfoster-r7]

Add initial kutil support for listing and adding entries to keytab file:

msf6 auxiliary(admin/kerberos/ktutil) > rerun keytab_file=/tmp/example.keytab
[*] Reloading module...

Keytab entries
==============

 vno  type           principal                   hash                                                              date
 ---  ----           ---------                   ----                                                              ----
 1    18 (AES256)    [email protected]  54d8d7c76dd916efe1cd34e5acb6daf052078242c573aa968448a74ebe1776a5  2022-09-30 13:56:27 +0100
 1    17 (AES128)    [email protected]  ec12451627c361a529e12b0c29a7ffe0                                  2022-09-30 13:56:30 +0100
 1    23 (RC4_HMAC)  [email protected]  8846f7eaee8fb117ad06bdd830b7586c                                  2022-09-30 13:56:33 +0100

[*] Auxiliary module execution completed
msf6 auxiliary(admin/kerberos/ktutil) >

I've verified this with the output of ktutil on Mac:

rm example.keytab
ktutil --keytab=./example.keytab --verbose add --password=password [email protected] --enctype=aes256-cts-hmac-sha1-96 --kvno=1
ktutil --keytab=./example.keytab --verbose add --password=password [email protected] --enctype=aes128-cts-hmac-sha1-96 --kvno=1
ktutil --keytab=./example.keytab --verbose add --password=password [email protected] --enctype=arcfour-hmac-md5 --kvno=1
ktutil --keytab=./example.keytab --verbose list

As well as ktpass from window's cmt prompt:

ktpass /crypto All /princ [email protected] /pass p4$$w0rd /out demo.keytab /ptype KRB5_NT_PRINCIPAL

Verification

List the steps needed to make sure this thing works

• [ ] Verify keytab files can be parsed using the Metasploit module
• [ ] Verify keytab files can have entries added