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# Unix SMB/CIFS implementation.
# Copyright (C) Andrew Bartlett <abartlet@samba.org> 2017
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
"""
Tests auth logging tests that exercise SamLogon
"""
import samba.tests
import os
from samba.samdb import SamDB
import samba.tests.auth_log_base
from samba.credentials import (
Credentials,
DONT_USE_KERBEROS,
CLI_CRED_NTLMv2_AUTH
)
from samba.dcerpc import ntlmssp, netlogon
from samba.dcerpc.dcerpc import AS_SYSTEM_MAGIC_PATH_TOKEN
from samba.ndr import ndr_pack
from samba.auth import system_session
from samba.tests import delete_force
from samba.dsdb import UF_WORKSTATION_TRUST_ACCOUNT, UF_PASSWD_NOTREQD
from samba.dcerpc.misc import SEC_CHAN_WKSTA
from samba.compat import text_type
class AuthLogTestsSamLogon(samba.tests.auth_log_base.AuthLogTestBase):
def setUp(self):
super(AuthLogTestsSamLogon, self).setUp()
self.lp = samba.tests.env_loadparm()
self.creds = Credentials()
self.session = system_session()
self.ldb = SamDB(
session_info=self.session,
credentials=self.creds,
lp=self.lp)
self.domain = os.environ["DOMAIN"]
self.netbios_name = "SamLogonTest"
self.machinepass = "abcdefghij"
self.remoteAddress = AS_SYSTEM_MAGIC_PATH_TOKEN
self.base_dn = self.ldb.domain_dn()
self.samlogon_dn = ("cn=%s,cn=users,%s" %
(self.netbios_name, self.base_dn))
def tearDown(self):
super(AuthLogTestsSamLogon, self).tearDown()
delete_force(self.ldb, self.samlogon_dn)
def _test_samlogon(self, binding, creds, checkFunction):
def isLastExpectedMessage(msg):
return (
msg["type"] == "Authentication" and
msg["Authentication"]["serviceDescription"] == "SamLogon" and
msg["Authentication"]["authDescription"] == "network" and
msg["Authentication"]["passwordType"] == "NTLMv2")
if binding:
binding = "[schannel,%s]" % binding
else:
binding = "[schannel]"
utf16pw = text_type('"' + self.machinepass + '"').encode('utf-16-le')
self.ldb.add({
"dn": self.samlogon_dn,
"objectclass": "computer",
"sAMAccountName": "%s$" % self.netbios_name,
"userAccountControl":
str(UF_WORKSTATION_TRUST_ACCOUNT | UF_PASSWD_NOTREQD),
"unicodePwd": utf16pw})
machine_creds = Credentials()
machine_creds.guess(self.get_loadparm())
machine_creds.set_secure_channel_type(SEC_CHAN_WKSTA)
machine_creds.set_password(self.machinepass)
machine_creds.set_username(self.netbios_name + "$")
netlogon_conn = netlogon.netlogon("ncalrpc:%s" % binding,
self.get_loadparm(),
machine_creds)
challenge = b"abcdefgh"
target_info = ntlmssp.AV_PAIR_LIST()
target_info.count = 3
domainname = ntlmssp.AV_PAIR()
domainname.AvId = ntlmssp.MsvAvNbDomainName
domainname.Value = self.domain
computername = ntlmssp.AV_PAIR()
computername.AvId = ntlmssp.MsvAvNbComputerName
computername.Value = self.netbios_name
eol = ntlmssp.AV_PAIR()
eol.AvId = ntlmssp.MsvAvEOL
target_info.pair = [domainname, computername, eol]
target_info_blob = ndr_pack(target_info)
response = creds.get_ntlm_response(flags=CLI_CRED_NTLMv2_AUTH,
challenge=challenge,
target_info=target_info_blob)
netr_flags = 0
logon_level = netlogon.NetlogonNetworkTransitiveInformation
logon = samba.dcerpc.netlogon.netr_NetworkInfo()
logon.challenge = [x if isinstance(x,int) else ord(x) for x in challenge]
logon.nt = netlogon.netr_ChallengeResponse()
logon.nt.length = len(response["nt_response"])
logon.nt.data = [x if isinstance(x,int) else ord(x) for x in response["nt_response"]]
logon.identity_info = samba.dcerpc.netlogon.netr_IdentityInfo()
(username, domain) = creds.get_ntlm_username_domain()
logon.identity_info.domain_name.string = domain
logon.identity_info.account_name.string = username
logon.identity_info.workstation.string = creds.get_workstation()
validation_level = samba.dcerpc.netlogon.NetlogonValidationSamInfo4
result = netlogon_conn.netr_LogonSamLogonEx(
os.environ["SERVER"],
machine_creds.get_workstation(),
logon_level, logon,
validation_level, netr_flags)
(validation, authoritative, netr_flags_out) = result
messages = self.waitForMessages(isLastExpectedMessage, netlogon_conn)
checkFunction(messages)
def samlogon_check(self, messages):
messages = self.remove_netlogon_messages(messages)
expected_messages = 5
self.assertEquals(expected_messages,
len(messages),
"Did not receive the expected number of messages")
# Check the first message it should be an Authorization
msg = messages[0]
self.assertEquals("Authorization", msg["type"])
self.assertEquals("DCE/RPC",
msg["Authorization"]["serviceDescription"])
self.assertEquals("ncalrpc", msg["Authorization"]["authType"])
self.assertEquals("NONE", msg["Authorization"]["transportProtection"])
self.assertTrue(self.is_guid(msg["Authorization"]["sessionId"]))
def test_ncalrpc_samlogon(self):
creds = self.insta_creds(template=self.get_credentials(),
kerberos_state=DONT_USE_KERBEROS)
try:
self._test_samlogon("SEAL", creds, self.samlogon_check)
except Exception as e:
self.fail("Unexpected exception: " + str(e))
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