3 # Copyright Stefan Metzmacher 2011-2012
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 3 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
18 # This is useful to sync passwords from an AD domain.
21 # $ source4/scripting/devel/repl_cleartext_pwd.py \
22 # -Uadministrator%A1b2C3d4 \
23 # 172.31.9.219 DC=bla,DC=base /tmp/cookie cleartext_utf8 131085 displayName
24 # # starting at usn[0]
25 # dn: CN=Test User1,CN=Users,DC=bla,DC=base
26 # cleartext_utf8: A1b2C3d4
27 # displayName:: VABlAHMAdAAgAFUAcwBlAHIAMQA=
31 # $ source4/scripting/devel/repl_cleartext_pwd.py \
32 # -Uadministrator%A1b2C3d4
33 # 172.31.9.219 DC=bla,DC=base cookie_file cleartext_utf8 131085 displayName
34 # # starting at usn[16449]
39 from __future__ import print_function
42 # Find right direction when running from source tree
43 sys.path.insert(0, "bin/python")
45 import samba.getopt as options
46 from optparse import OptionParser
48 from samba.dcerpc import drsuapi, drsblobs, misc
49 from samba.ndr import ndr_pack, ndr_unpack, ndr_print
53 import Crypto.Cipher.ARC4
57 from ldif import LDIFWriter
63 self.ldif = LDIFWriter(sys.stdout)
65 def add_attr(self, dn, attname, vals):
66 if dn not in self.global_objs:
67 self.global_objs[dn] = {}
68 self.global_objs[dn][attname] = vals
71 for dn, obj in self.global_objs.items():
72 self.ldif.unparse(dn, obj)
77 def attid_equal(a1, a2):
78 return (a1 & 0xffffffff) == (a2 & 0xffffffff)
80 ########### main code ###########
81 if __name__ == "__main__":
82 parser = OptionParser("repl_cleartext_pwd.py [options] server dn cookie_file clear_utf8_name [attid attname attmode] [clear_utf16_name")
83 sambaopts = options.SambaOptions(parser)
84 credopts = options.CredentialsOptions(parser)
85 parser.add_option_group(credopts)
87 (opts, args) = parser.parse_args()
96 parser.error("more arguments required - given=%d" % (len(args)))
100 cookie_file = args[2]
101 if len(cookie_file) == 0:
103 clear_utf8_name = args[3]
106 attid = int(args[4], 16)
111 if attmode not in ["raw", "utf8"]:
112 parser.error("attmode should be 'raw' or 'utf8'")
118 clear_utf16_name = args[7]
120 clear_utf16_name = None
122 lp = sambaopts.get_loadparm()
123 creds = credopts.get_credentials(lp)
125 if not creds.authentication_requested():
126 parser.error("You must supply credentials")
130 f = open(cookie_file, 'r')
131 store_blob = f.read()
134 store_hdr = store_blob[0:28]
136 store_dn_len, store_dn_ofs, \
137 store_hwm_len, store_hwm_ofs, \
138 store_utdv_len, store_utdv_ofs) = \
139 struct.unpack("<LLLLLLL", store_hdr)
141 store_dn = store_blob[store_dn_ofs:store_dn_ofs + store_dn_len]
142 store_hwm_blob = store_blob[store_hwm_ofs:store_hwm_ofs + store_hwm_len]
143 store_utdv_blob = store_blob[store_utdv_ofs:store_utdv_ofs + store_utdv_len]
145 store_hwm = ndr_unpack(drsuapi.DsReplicaHighWaterMark, store_hwm_blob)
146 store_utdv = ndr_unpack(drsblobs.replUpToDateVectorBlob, store_utdv_blob)
148 assert store_dn == dn
149 # print "%s" % ndr_print(store_hwm)
150 # print "%s" % ndr_print(store_utdv)
153 store_hwm = drsuapi.DsReplicaHighWaterMark()
154 store_hwm.tmp_highest_usn = 0
155 store_hwm.reserved_usn = 0
156 store_hwm.highest_usn = 0
159 binding_str = "ncacn_ip_tcp:%s[spnego,seal]" % server
161 drs_conn = drsuapi.drsuapi(binding_str, lp, creds)
163 bind_info = drsuapi.DsBindInfoCtr()
164 bind_info.length = 28
165 bind_info.info = drsuapi.DsBindInfo28()
166 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_BASE
167 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ASYNC_REPLICATION
168 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_REMOVEAPI
169 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_MOVEREQ_V2
170 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHG_COMPRESS
171 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V1
172 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_RESTORE_USN_OPTIMIZATION
173 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_KCC_EXECUTE
174 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADDENTRY_V2
175 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_LINKED_VALUE_REPLICATION
176 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V2
177 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_INSTANCE_TYPE_NOT_REQ_ON_MOD
178 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_CRYPTO_BIND
179 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GET_REPL_INFO
180 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_STRONG_ENCRYPTION
181 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V01
182 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_TRANSITIVE_MEMBERSHIP
183 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADD_SID_HISTORY
184 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_POST_BETA3
185 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GET_MEMBERSHIPS2
186 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V6
187 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_NONDOMAIN_NCS
188 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V8
189 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V5
190 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V6
191 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADDENTRYREPLY_V3
192 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V7
193 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_VERIFY_OBJECT
194 (info, drs_handle) = drs_conn.DsBind(misc.GUID(drsuapi.DRSUAPI_DS_BIND_GUID), bind_info)
196 null_guid = misc.GUID()
198 naming_context = drsuapi.DsReplicaObjectIdentifier()
199 naming_context.dn = dn
200 highwatermark = store_hwm
201 uptodateness_vector = None
202 if store_utdv is not None:
203 uptodateness_vector = drsuapi.DsReplicaCursorCtrEx()
204 if store_utdv.version == 1:
205 uptodateness_vector.cursors = store_utdv.cursors
206 elif store_utdv.version == 2:
208 for i in range(0, store_utdv.ctr.count):
209 cursor = drsuapi.DsReplicaCursor()
210 cursor.source_dsa_invocation_id = store_utdv.ctr.cursors[i].source_dsa_invocation_id
211 cursor.highest_usn = store_utdv.ctr.cursors[i].highest_usn
212 cursors.append(cursor)
213 uptodateness_vector.cursors = cursors
215 req8 = drsuapi.DsGetNCChangesRequest8()
217 req8.destination_dsa_guid = null_guid
218 req8.source_dsa_invocation_id = null_guid
219 req8.naming_context = naming_context
220 req8.highwatermark = highwatermark
221 req8.uptodateness_vector = uptodateness_vector
222 req8.replica_flags = (drsuapi.DRSUAPI_DRS_INIT_SYNC |
223 drsuapi.DRSUAPI_DRS_PER_SYNC |
224 drsuapi.DRSUAPI_DRS_GET_ANC |
225 drsuapi.DRSUAPI_DRS_NEVER_SYNCED |
226 drsuapi.DRSUAPI_DRS_WRIT_REP)
227 req8.max_object_count = 402
228 req8.max_ndr_size = 402116
231 req8.partial_attribute_set = None
232 req8.partial_attribute_set_ex = None
233 req8.mapping_ctr.num_mappings = 0
234 req8.mapping_ctr.mappings = None
236 user_session_key = drs_conn.user_session_key
238 print("# starting at usn[%d]" % (highwatermark.highest_usn))
241 (level, ctr) = drs_conn.DsGetNCChanges(drs_handle, 8, req8)
242 if ctr.first_object == None and ctr.object_count != 0:
243 raise RuntimeError("DsGetNCChanges: NULL first_object with object_count=%u" % (ctr.object_count))
245 obj_item = ctr.first_object
246 while obj_item is not None:
247 obj = obj_item.object
249 if obj.identifier is None:
250 obj_item = obj_item.next_object
253 # print '%s' % obj.identifier.dn
256 for i in range(0, obj.attribute_ctr.num_attributes):
257 attr = obj.attribute_ctr.attributes[i]
258 if attid_equal(attr.attid, drsuapi.DRSUAPI_ATTID_isDeleted):
261 obj_item = obj_item.next_object
266 for i in range(0, obj.attribute_ctr.num_attributes):
267 attr = obj.attribute_ctr.attributes[i]
268 if attid_equal(attr.attid, attid):
270 for j in range(0, attr.value_ctr.num_values):
271 assert attr.value_ctr.values[j].blob is not None
272 val_raw = attr.value_ctr.values[j].blob
274 if attmode == "utf8":
275 val_unicode = unicode(val_raw, 'utf-16-le')
276 val = val_unicode.encode('utf-8')
277 elif attmode == "raw":
280 assert False, "attmode[%s]" % attmode
282 if not attid_equal(attr.attid, drsuapi.DRSUAPI_ATTID_supplementalCredentials):
284 assert attr.value_ctr.num_values <= 1
285 if attr.value_ctr.num_values == 0:
287 assert attr.value_ctr.values[0].blob is not None
288 spl_crypt = attr.value_ctr.values[0].blob
290 if spl_crypt is None:
291 obj_item = obj_item.next_object
294 assert len(spl_crypt) >= 20
295 confounder = spl_crypt[0:16]
296 enc_buffer = spl_crypt[16:]
299 m5.update(user_session_key)
300 m5.update(confounder)
301 enc_key = m5.digest()
303 rc4 = Crypto.Cipher.ARC4.new(enc_key)
304 plain_buffer = rc4.decrypt(enc_buffer)
306 (crc32_v) = struct.unpack("<L", plain_buffer[0:4])
307 attr_val = plain_buffer[4:]
308 crc32_c = binascii.crc32(attr_val) & 0xffffffff
309 assert int(crc32_v[0]) == int(crc32_c), "CRC32 0x%08X != 0x%08X" % (crc32_v[0], crc32_c)
311 spl = ndr_unpack(drsblobs.supplementalCredentialsBlob, attr_val)
313 # print '%s' % ndr_print(spl)
317 for i in range(0, spl.sub.num_packages):
318 pkg = spl.sub.packages[i]
319 if pkg.name != "Primary:CLEARTEXT":
321 cleartext_hex = pkg.data
323 if cleartext_hex is not None:
324 cleartext_utf16 = binascii.a2b_hex(cleartext_hex)
325 if clear_utf16_name is not None:
326 gls.add_attr(obj.identifier.dn, clear_utf16_name, [cleartext_utf16])
328 cleartext_unicode = unicode(cleartext_utf16, 'utf-16-le')
329 cleartext_utf8 = cleartext_unicode.encode('utf-8')
330 gls.add_attr(obj.identifier.dn, clear_utf8_name, [cleartext_utf8])
334 if attvals is not None:
335 gls.add_attr(obj.identifier.dn, attname, attvals)
339 for i in range(0, spl.sub.num_packages):
340 pkg = spl.sub.packages[i]
341 if pkg.name != "Primary:Kerberos":
343 krb5_old_hex = pkg.data
345 if krb5_old_hex is not None:
346 krb5_old_raw = binascii.a2b_hex(krb5_old_hex)
347 krb5_old = ndr_unpack(drsblobs.package_PrimaryKerberosBlob, krb5_old_raw, allow_remaining=True)
349 # print '%s' % ndr_print(krb5_old)
353 for i in range(0, spl.sub.num_packages):
354 pkg = spl.sub.packages[i]
355 if pkg.name != "Primary:Kerberos-Newer-Keys":
357 krb5_new_hex = pkg.data
359 if krb5_new_hex is not None:
360 krb5_new_raw = binascii.a2b_hex(krb5_new_hex)
361 krb5_new = ndr_unpack(drsblobs.package_PrimaryKerberosBlob, krb5_new_raw, allow_remaining=True)
363 # print '%s' % ndr_print(krb5_new)
365 obj_item = obj_item.next_object
369 if ctr.more_data == 0:
370 store_hwm = ctr.new_highwatermark
372 store_utdv = drsblobs.replUpToDateVectorBlob()
373 store_utdv.version = ctr.uptodateness_vector.version
374 store_utdv_ctr = store_utdv.ctr
375 store_utdv_ctr.count = ctr.uptodateness_vector.count
376 store_utdv_ctr.cursors = ctr.uptodateness_vector.cursors
377 store_utdv.ctr = store_utdv_ctr
379 # print "%s" % ndr_print(store_hwm)
380 # print "%s" % ndr_print(store_utdv)
382 store_hwm_blob = ndr_pack(store_hwm)
383 store_utdv_blob = ndr_pack(store_utdv)
386 # uint32_t version '1'
387 # uint32_t dn_str_len
388 # uint32_t dn_str_ofs
389 # uint32_t hwm_blob_len
390 # uint32_t hwm_blob_ofs
391 # uint32_t utdv_blob_len
392 # uint32_t utdv_blob_ofs
393 store_hdr_len = 7 * 4
394 dn_ofs = store_hdr_len
395 hwm_ofs = dn_ofs + len(dn)
396 utdv_ofs = hwm_ofs + len(store_hwm_blob)
397 store_blob = struct.pack("<LLLLLLL", 1, \
399 len(store_hwm_blob), hwm_ofs, \
400 len(store_utdv_blob), utdv_ofs) + \
401 dn + store_hwm_blob + store_utdv_blob
403 tmp_file = "%s.tmp" % cookie_file
404 f = open(tmp_file, 'wb')
407 os.rename(tmp_file, cookie_file)
409 print("# up to usn[%d]" % (ctr.new_highwatermark.highest_usn))
411 print("# up to tmp_usn[%d]" % (ctr.new_highwatermark.highest_usn))
412 req8.highwatermark = ctr.new_highwatermark