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
62 self.ldif = LDIFWriter(sys.stdout)
64 def add_attr(self, dn, attname, vals):
65 if dn not in self.global_objs:
66 self.global_objs[dn] = {}
67 self.global_objs[dn][attname] = vals
70 for dn, obj in self.global_objs.items():
71 self.ldif.unparse(dn, obj)
75 def attid_equal(a1,a2):
76 return (a1 & 0xffffffff) == (a2 & 0xffffffff)
78 ########### main code ###########
79 if __name__ == "__main__":
80 parser = OptionParser("repl_cleartext_pwd.py [options] server dn cookie_file clear_utf8_name [attid attname attmode] [clear_utf16_name")
81 sambaopts = options.SambaOptions(parser)
82 credopts = options.CredentialsOptions(parser)
83 parser.add_option_group(credopts)
85 (opts, args) = parser.parse_args()
94 parser.error("more arguments required - given=%d" % (len(args)))
99 if len(cookie_file) == 0:
101 clear_utf8_name = args[3]
104 attid = int(args[4], 16)
109 if attmode not in ["raw", "utf8"]:
110 parser.error("attmode should be 'raw' or 'utf8'")
116 clear_utf16_name = args[7]
118 clear_utf16_name = None
120 lp = sambaopts.get_loadparm()
121 creds = credopts.get_credentials(lp)
123 if not creds.authentication_requested():
124 parser.error("You must supply credentials")
128 f = open(cookie_file, 'r')
129 store_blob = f.read()
132 store_hdr = store_blob[0:28]
134 store_dn_len, store_dn_ofs, \
135 store_hwm_len, store_hwm_ofs, \
136 store_utdv_len, store_utdv_ofs) = \
137 struct.unpack("<LLLLLLL", store_hdr)
139 store_dn = store_blob[store_dn_ofs:store_dn_ofs+store_dn_len]
140 store_hwm_blob = store_blob[store_hwm_ofs:store_hwm_ofs+store_hwm_len]
141 store_utdv_blob = store_blob[store_utdv_ofs:store_utdv_ofs+store_utdv_len]
143 store_hwm = ndr_unpack(drsuapi.DsReplicaHighWaterMark, store_hwm_blob)
144 store_utdv = ndr_unpack(drsblobs.replUpToDateVectorBlob, store_utdv_blob)
146 assert store_dn == dn
147 #print "%s" % ndr_print(store_hwm)
148 #print "%s" % ndr_print(store_utdv)
151 store_hwm = drsuapi.DsReplicaHighWaterMark()
152 store_hwm.tmp_highest_usn = 0
153 store_hwm.reserved_usn = 0
154 store_hwm.highest_usn = 0
157 binding_str = "ncacn_ip_tcp:%s[spnego,seal]" % server
159 drs_conn = drsuapi.drsuapi(binding_str, lp, creds)
161 bind_info = drsuapi.DsBindInfoCtr()
162 bind_info.length = 28
163 bind_info.info = drsuapi.DsBindInfo28()
164 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_BASE
165 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ASYNC_REPLICATION
166 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_REMOVEAPI
167 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_MOVEREQ_V2
168 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHG_COMPRESS
169 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V1
170 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_RESTORE_USN_OPTIMIZATION
171 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_KCC_EXECUTE
172 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADDENTRY_V2
173 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_LINKED_VALUE_REPLICATION
174 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V2
175 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_INSTANCE_TYPE_NOT_REQ_ON_MOD
176 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_CRYPTO_BIND
177 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GET_REPL_INFO
178 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_STRONG_ENCRYPTION
179 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V01
180 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_TRANSITIVE_MEMBERSHIP
181 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADD_SID_HISTORY
182 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_POST_BETA3
183 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GET_MEMBERSHIPS2
184 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V6
185 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_NONDOMAIN_NCS
186 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V8
187 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V5
188 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V6
189 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADDENTRYREPLY_V3
190 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V7
191 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_VERIFY_OBJECT
192 (info, drs_handle) = drs_conn.DsBind(misc.GUID(drsuapi.DRSUAPI_DS_BIND_GUID), bind_info)
194 null_guid = misc.GUID()
196 naming_context = drsuapi.DsReplicaObjectIdentifier()
197 naming_context.dn = dn
198 highwatermark = store_hwm
199 uptodateness_vector = None
200 if store_utdv is not None:
201 uptodateness_vector = drsuapi.DsReplicaCursorCtrEx()
202 if store_utdv.version == 1:
203 uptodateness_vector.cursors = store_utdv.cursors
204 elif store_utdv.version == 2:
206 for i in range(0, store_utdv.ctr.count):
207 cursor = drsuapi.DsReplicaCursor()
208 cursor.source_dsa_invocation_id = store_utdv.ctr.cursors[i].source_dsa_invocation_id
209 cursor.highest_usn = store_utdv.ctr.cursors[i].highest_usn
210 cursors.append(cursor)
211 uptodateness_vector.cursors = cursors
213 req8 = drsuapi.DsGetNCChangesRequest8()
215 req8.destination_dsa_guid = null_guid
216 req8.source_dsa_invocation_id = null_guid
217 req8.naming_context = naming_context
218 req8.highwatermark = highwatermark
219 req8.uptodateness_vector = uptodateness_vector
220 req8.replica_flags = (drsuapi.DRSUAPI_DRS_INIT_SYNC |
221 drsuapi.DRSUAPI_DRS_PER_SYNC |
222 drsuapi.DRSUAPI_DRS_GET_ANC |
223 drsuapi.DRSUAPI_DRS_NEVER_SYNCED |
224 drsuapi.DRSUAPI_DRS_WRIT_REP)
225 req8.max_object_count = 402
226 req8.max_ndr_size = 402116
229 req8.partial_attribute_set = None
230 req8.partial_attribute_set_ex = None
231 req8.mapping_ctr.num_mappings = 0
232 req8.mapping_ctr.mappings = None
234 user_session_key = drs_conn.user_session_key
236 print("# starting at usn[%d]" % (highwatermark.highest_usn))
239 (level, ctr) = drs_conn.DsGetNCChanges(drs_handle, 8, req8)
240 if ctr.first_object == None and ctr.object_count != 0:
241 raise RuntimeError("DsGetNCChanges: NULL first_object with object_count=%u" % (ctr.object_count))
243 obj_item = ctr.first_object
244 while obj_item is not None:
245 obj = obj_item.object
247 if obj.identifier is None:
248 obj_item = obj_item.next_object
251 #print '%s' % obj.identifier.dn
254 for i in range(0, obj.attribute_ctr.num_attributes):
255 attr = obj.attribute_ctr.attributes[i]
256 if attid_equal(attr.attid, drsuapi.DRSUAPI_ATTID_isDeleted):
259 obj_item = obj_item.next_object
264 for i in range(0, obj.attribute_ctr.num_attributes):
265 attr = obj.attribute_ctr.attributes[i]
266 if attid_equal(attr.attid, attid):
268 for j in range(0, attr.value_ctr.num_values):
269 assert attr.value_ctr.values[j].blob is not None
270 val_raw = attr.value_ctr.values[j].blob
272 if attmode == "utf8":
273 val_unicode = unicode(val_raw, 'utf-16-le')
274 val = val_unicode.encode('utf-8')
275 elif attmode == "raw":
278 assert False, "attmode[%s]" % attmode
280 if not attid_equal(attr.attid, drsuapi.DRSUAPI_ATTID_supplementalCredentials):
282 assert attr.value_ctr.num_values <= 1
283 if attr.value_ctr.num_values == 0:
285 assert attr.value_ctr.values[0].blob is not None
286 spl_crypt = attr.value_ctr.values[0].blob
288 if spl_crypt is None:
289 obj_item = obj_item.next_object
292 assert len(spl_crypt) >= 20
293 confounder = spl_crypt[0:16]
294 enc_buffer = spl_crypt[16:]
297 m5.update(user_session_key)
298 m5.update(confounder)
299 enc_key = m5.digest()
301 rc4 = Crypto.Cipher.ARC4.new(enc_key)
302 plain_buffer = rc4.decrypt(enc_buffer)
304 (crc32_v) = struct.unpack("<L", plain_buffer[0:4])
305 attr_val = plain_buffer[4:]
306 crc32_c = binascii.crc32(attr_val) & 0xffffffff
307 assert int(crc32_v[0]) == int(crc32_c), "CRC32 0x%08X != 0x%08X" % (crc32_v[0], crc32_c)
309 spl = ndr_unpack(drsblobs.supplementalCredentialsBlob, attr_val)
311 #print '%s' % ndr_print(spl)
315 for i in range(0, spl.sub.num_packages):
316 pkg = spl.sub.packages[i]
317 if pkg.name != "Primary:CLEARTEXT":
319 cleartext_hex = pkg.data
321 if cleartext_hex is not None:
322 cleartext_utf16 = binascii.a2b_hex(cleartext_hex)
323 if clear_utf16_name is not None:
324 gls.add_attr(obj.identifier.dn, clear_utf16_name, [cleartext_utf16])
326 cleartext_unicode = unicode(cleartext_utf16, 'utf-16-le')
327 cleartext_utf8 = cleartext_unicode.encode('utf-8')
328 gls.add_attr(obj.identifier.dn, clear_utf8_name, [cleartext_utf8])
332 if attvals is not None:
333 gls.add_attr(obj.identifier.dn, attname, attvals)
337 for i in range(0, spl.sub.num_packages):
338 pkg = spl.sub.packages[i]
339 if pkg.name != "Primary:Kerberos":
341 krb5_old_hex = pkg.data
343 if krb5_old_hex is not None:
344 krb5_old_raw = binascii.a2b_hex(krb5_old_hex)
345 krb5_old = ndr_unpack(drsblobs.package_PrimaryKerberosBlob, krb5_old_raw, allow_remaining=True)
347 #print '%s' % ndr_print(krb5_old)
351 for i in range(0, spl.sub.num_packages):
352 pkg = spl.sub.packages[i]
353 if pkg.name != "Primary:Kerberos-Newer-Keys":
355 krb5_new_hex = pkg.data
357 if krb5_new_hex is not None:
358 krb5_new_raw = binascii.a2b_hex(krb5_new_hex)
359 krb5_new = ndr_unpack(drsblobs.package_PrimaryKerberosBlob, krb5_new_raw, allow_remaining=True)
361 #print '%s' % ndr_print(krb5_new)
363 obj_item = obj_item.next_object
367 if ctr.more_data == 0:
368 store_hwm = ctr.new_highwatermark
370 store_utdv = drsblobs.replUpToDateVectorBlob()
371 store_utdv.version = ctr.uptodateness_vector.version
372 store_utdv_ctr = store_utdv.ctr
373 store_utdv_ctr.count = ctr.uptodateness_vector.count
374 store_utdv_ctr.cursors = ctr.uptodateness_vector.cursors
375 store_utdv.ctr = store_utdv_ctr
377 #print "%s" % ndr_print(store_hwm)
378 #print "%s" % ndr_print(store_utdv)
380 store_hwm_blob = ndr_pack(store_hwm)
381 store_utdv_blob = ndr_pack(store_utdv)
384 # uint32_t version '1'
385 # uint32_t dn_str_len
386 # uint32_t dn_str_ofs
387 # uint32_t hwm_blob_len
388 # uint32_t hwm_blob_ofs
389 # uint32_t utdv_blob_len
390 # uint32_t utdv_blob_ofs
391 store_hdr_len = 7 * 4
392 dn_ofs = store_hdr_len
393 hwm_ofs = dn_ofs + len(dn)
394 utdv_ofs = hwm_ofs + len(store_hwm_blob)
395 store_blob = struct.pack("<LLLLLLL", 1, \
397 len(store_hwm_blob), hwm_ofs, \
398 len(store_utdv_blob), utdv_ofs) + \
399 dn + store_hwm_blob + store_utdv_blob
401 tmp_file = "%s.tmp" % cookie_file
402 f = open(tmp_file, 'wb')
405 os.rename(tmp_file, cookie_file)
407 print("# up to usn[%d]" % (ctr.new_highwatermark.highest_usn))
409 print("# up to tmp_usn[%d]" % (ctr.new_highwatermark.highest_usn))
410 req8.highwatermark = ctr.new_highwatermark