def tgt_to_kirbi(tgs, encTGSRepPart):
#encTGSRepPart is already decrypted at this point
ci = {}
ci['key'] = encTGSRepPart['key']
ci['prealm'] = tgs['crealm']
ci['pname'] = tgs['cname']
ci['flags'] = encTGSRepPart['flags']
ci['authtime'] = encTGSRepPart['authtime']
ci['starttime'] = encTGSRepPart['starttime']
ci['endtime'] = encTGSRepPart['endtime']
ci['renew-till'] = encTGSRepPart['renew-till']
ci['srealm'] = encTGSRepPart['srealm']
ci['sname'] = encTGSRepPart['sname']
ti = {}
ti['ticket-info'] = [KrbCredInfo(ci)]
te = {}
te['etype'] = 0
te['cipher'] = EncKrbCredPart(ti).dump()
t = {}
t['pvno'] = 5
t['msg-type'] = 22
t['enc-part'] = EncryptedData(te)
t['tickets'] = [tgs['ticket']]
return KRB_CRED(t)
def to_kirbi(self):
filename = '%s@%s_%s' % (self.client.to_string() , self.server.to_string(), hashlib.sha1(self.ticket.to_asn1()).hexdigest()[:8])
krbcredinfo = {}
krbcredinfo['key'] = EncryptionKey(self.key.to_asn1())
krbcredinfo['prealm'] = self.client.realm.to_string()
krbcredinfo['pname'] = self.client.to_asn1()[0]
krbcredinfo['flags'] = core.IntegerBitString(self.tktflags).cast(TicketFlags)
if self.time.authtime != 0: #this parameter is not mandatory, and most of the time not present
krbcredinfo['authtime'] = datetime.datetime.fromtimestamp(self.time.authtime)
krbcredinfo['starttime'] = datetime.datetime.fromtimestamp(self.time.starttime)
krbcredinfo['endtime'] = datetime.datetime.fromtimestamp(self.time.endtime)
if self.time.renew_till != 0: #this parameter is not mandatory, and sometimes it's not present
krbcredinfo['renew-till'] = datetime.datetime.fromtimestamp(self.time.authtime)
krbcredinfo['srealm'] = self.server.realm.to_string()
krbcredinfo['sname'] = self.server.to_asn1()[0]
enc_krbcred = {}
enc_krbcred['ticket-info'] = [KrbCredInfo(krbcredinfo)]
krbcred = {}
krbcred['pvno'] = krb5_pvno
krbcred['msg-type'] = MESSAGE_TYPE.KRB_CRED.value
krbcred['tickets'] = [Ticket.load(self.ticket.to_asn1())]
krbcred['enc-part'] = EncryptedData({'etype': EncryptionType.NULL.value, 'cipher': EncKrbCredPart(enc_krbcred).dump()})
kirbi = KRBCRED(krbcred)
return kirbi, filename
def to_asn1(self):
krbcredinfo = {}
krbcredinfo['key'] = EncryptionKey({
'keytype': self.KeyType,
'keyvalue': self.Key
})
krbcredinfo['prealm'] = self.AltTargetDomainName
krbcredinfo['pname'] = PrincipalName({
'name-type': self.EClientName_type,
'name-string': self.EClientName
})
krbcredinfo['flags'] = core.IntegerBitString(
self.TicketFlags).cast(TicketFlags)
krbcredinfo['starttime'] = self.StartTime
krbcredinfo['endtime'] = self.EndTime
krbcredinfo['renew-till'] = self.RenewUntil
krbcredinfo['srealm'] = self.DomainName
krbcredinfo['sname'] = PrincipalName({
'name-type': self.ServiceName_type,
'name-string': self.ServiceName
})
enc_krbcred = {}
enc_krbcred['ticket-info'] = [KrbCredInfo(krbcredinfo)]
ticket = {}
ticket['tkt-vno'] = krb5_pvno
ticket['realm'] = self.DomainName
ticket['sname'] = PrincipalName({
'name-type': NAME_TYPE.SRV_INST.value,
'name-string': self.ServiceName
})
ticket['enc-part'] = EncryptedData({
'etype': self.TicketEncType,
'kvno': self.TicketKvno,
'cipher': self.Ticket
})
krbcred = {}
krbcred['pvno'] = krb5_pvno
krbcred['msg-type'] = MESSAGE_TYPE.KRB_CRED.value
krbcred['tickets'] = [Ticket(ticket)]
krbcred['enc-part'] = EncryptedData({
'etype':
EncryptionType.NULL.value,
'cipher':
EncKrbCredPart(enc_krbcred).dump()
})
return KRBCRED(krbcred)