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]
41 # Find right direction when running from source tree
42 sys.path.insert(0, "bin/python")
44 import samba.getopt as options
45 from optparse import OptionParser
47 from samba.dcerpc import drsuapi, drsblobs, misc
48 from samba.ndr import ndr_pack, ndr_unpack, ndr_print
52 import Crypto.Cipher.ARC4
56 from ldif import LDIFWriter
61 self.ldif = LDIFWriter(sys.stdout)
63 def add_attr(self, dn, attname, vals):
64 if dn not in self.global_objs:
65 self.global_objs[dn] = {}
66 self.global_objs[dn][attname] = vals
69 for dn, obj in self.global_objs.items():
70 self.ldif.unparse(dn, obj)
74 def attid_equal(a1,a2):
75 return (a1 & 0xffffffff) == (a2 & 0xffffffff)
77 ########### main code ###########
78 if __name__ == "__main__":
79 parser = OptionParser("repl_cleartext_pwd.py [options] server dn cookie_file cleartext_name [attid attname]")
80 sambaopts = options.SambaOptions(parser)
81 credopts = options.CredentialsOptions(parser)
82 parser.add_option_group(credopts)
84 (opts, args) = parser.parse_args()
86 if len(args) < 4 or len(args) == 5:
87 parser.error("more arguments required")
92 if len(cookie_file) == 0:
94 cleartext_name = args[3]
97 attid = int(args[4], 16)
105 lp = sambaopts.get_loadparm()
106 creds = credopts.get_credentials(lp)
108 if not creds.authentication_requested():
109 parser.error("You must supply credentials")
113 f = open(cookie_file, 'r')
114 store_blob = f.read()
117 store_hdr = store_blob[0:28]
119 store_dn_len, store_dn_ofs, \
120 store_hwm_len, store_hwm_ofs, \
121 store_utdv_len, store_utdv_ofs) = \
122 struct.unpack("<LLLLLLL", store_hdr)
124 store_dn = store_blob[store_dn_ofs:store_dn_ofs+store_dn_len]
125 store_hwm_blob = store_blob[store_hwm_ofs:store_hwm_ofs+store_hwm_len]
126 store_utdv_blob = store_blob[store_utdv_ofs:store_utdv_ofs+store_utdv_len]
128 store_hwm = ndr_unpack(drsuapi.DsReplicaHighWaterMark, store_hwm_blob)
129 store_utdv = ndr_unpack(drsblobs.replUpToDateVectorBlob, store_utdv_blob)
131 assert store_dn == dn
132 #print "%s" % ndr_print(store_hwm)
133 #print "%s" % ndr_print(store_utdv)
136 store_hwm = drsuapi.DsReplicaHighWaterMark()
137 store_hwm.tmp_highest_usn = 0
138 store_hwm.reserved_usn = 0
139 store_hwm.highest_usn = 0
142 binding_str = "ncacn_ip_tcp:%s[spnego,seal]" % server
144 drs_conn = drsuapi.drsuapi(binding_str, lp, creds)
146 bind_info = drsuapi.DsBindInfoCtr()
147 bind_info.length = 28
148 bind_info.info = drsuapi.DsBindInfo28()
149 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_BASE
150 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ASYNC_REPLICATION
151 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_REMOVEAPI
152 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_MOVEREQ_V2
153 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHG_COMPRESS
154 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V1
155 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_RESTORE_USN_OPTIMIZATION
156 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_KCC_EXECUTE
157 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADDENTRY_V2
158 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_LINKED_VALUE_REPLICATION
159 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V2
160 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_INSTANCE_TYPE_NOT_REQ_ON_MOD
161 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_CRYPTO_BIND
162 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GET_REPL_INFO
163 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_STRONG_ENCRYPTION
164 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V01
165 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_TRANSITIVE_MEMBERSHIP
166 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADD_SID_HISTORY
167 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_POST_BETA3
168 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GET_MEMBERSHIPS2
169 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V6
170 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_NONDOMAIN_NCS
171 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V8
172 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V5
173 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V6
174 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADDENTRYREPLY_V3
175 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V7
176 bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_VERIFY_OBJECT
177 (info, drs_handle) = drs_conn.DsBind(misc.GUID(drsuapi.DRSUAPI_DS_BIND_GUID), bind_info)
179 null_guid = misc.GUID()
181 naming_context = drsuapi.DsReplicaObjectIdentifier()
182 naming_context.dn = dn
183 highwatermark = store_hwm
184 uptodateness_vector = None
185 if store_utdv is not None:
186 uptodateness_vector = drsuapi.DsReplicaCursorCtrEx()
187 if store_utdv.version == 1:
188 uptodateness_vector.cursors = store_utdv.cursors
189 elif store_utdv.version == 2:
191 for i in range(0, store_utdv.ctr.count):
192 cursor = drsuapi.DsReplicaCursor()
193 cursor.source_dsa_invocation_id = store_utdv.ctr.cursors[i].source_dsa_invocation_id
194 cursor.highest_usn = store_utdv.ctr.cursors[i].highest_usn
195 cursors.append(cursor)
196 uptodateness_vector.cursors = cursors
198 req8 = drsuapi.DsGetNCChangesRequest8()
200 req8.destination_dsa_guid = null_guid
201 req8.source_dsa_invocation_id = null_guid
202 req8.naming_context = naming_context
203 req8.highwatermark = highwatermark
204 req8.uptodateness_vector = uptodateness_vector
205 req8.replica_flags = (drsuapi.DRSUAPI_DRS_INIT_SYNC |
206 drsuapi.DRSUAPI_DRS_PER_SYNC |
207 drsuapi.DRSUAPI_DRS_GET_ANC |
208 drsuapi.DRSUAPI_DRS_NEVER_SYNCED |
209 drsuapi.DRSUAPI_DRS_WRIT_REP)
210 req8.max_object_count = 402
211 req8.max_ndr_size = 402116
214 req8.partial_attribute_set = None
215 req8.partial_attribute_set_ex = None
216 req8.mapping_ctr.num_mappings = 0
217 req8.mapping_ctr.mappings = None
219 user_session_key = drs_conn.user_session_key
221 print "# starting at usn[%d]" % (highwatermark.highest_usn)
224 (level, ctr) = drs_conn.DsGetNCChanges(drs_handle, 8, req8)
225 if ctr.first_object == None and ctr.object_count != 0:
226 raise RuntimeError("DsGetNCChanges: NULL first_object with object_count=%u" % (ctr.object_count))
228 obj_item = ctr.first_object
229 while obj_item is not None:
230 obj = obj_item.object
232 if obj.identifier is None:
233 obj_item = obj_item.next_object
236 #print '%s' % obj.identifier.dn
239 for i in range(0, obj.attribute_ctr.num_attributes):
240 attr = obj.attribute_ctr.attributes[i]
241 if attid_equal(attr.attid, drsuapi.DRSUAPI_ATTID_isDeleted):
244 obj_item = obj_item.next_object
249 for i in range(0, obj.attribute_ctr.num_attributes):
250 attr = obj.attribute_ctr.attributes[i]
251 if attid_equal(attr.attid, attid):
253 for j in range(0, attr.value_ctr.num_values):
254 assert attr.value_ctr.values[j].blob is not None
255 attvals.append(attr.value_ctr.values[j].blob)
256 if not attid_equal(attr.attid, drsuapi.DRSUAPI_ATTID_supplementalCredentials):
258 assert attr.value_ctr.num_values <= 1
259 if attr.value_ctr.num_values == 0:
261 assert attr.value_ctr.values[0].blob is not None
262 spl_crypt = attr.value_ctr.values[0].blob
264 if spl_crypt is None:
265 obj_item = obj_item.next_object
268 assert len(spl_crypt) >= 20
269 confounder = spl_crypt[0:16]
270 enc_buffer = spl_crypt[16:]
273 m5.update(user_session_key)
274 m5.update(confounder)
275 enc_key = m5.digest()
277 rc4 = Crypto.Cipher.ARC4.new(enc_key)
278 plain_buffer = rc4.decrypt(enc_buffer)
280 (crc32_v) = struct.unpack("<L", plain_buffer[0:4])
281 attr_val = plain_buffer[4:]
282 crc32_c = binascii.crc32(attr_val) & 0xffffffff
283 assert int(crc32_v[0]) == int(crc32_c), "CRC32 0x%08X != 0x%08X" % (crc32_v[0], crc32_c)
285 spl = ndr_unpack(drsblobs.supplementalCredentialsBlob, attr_val)
287 #print '%s' % ndr_print(spl)
291 for i in range(0, spl.sub.num_packages):
292 pkg = spl.sub.packages[i]
293 if pkg.name != "Primary:CLEARTEXT":
295 cleartext_hex = pkg.data
297 if cleartext_hex is not None:
298 cleartext_utf16 = binascii.a2b_hex(cleartext_hex)
299 cleartext_unicode = unicode(cleartext_utf16, 'utf-16-le')
300 cleartext_utf8 = cleartext_unicode.encode('utf-8')
302 gls.add_attr(obj.identifier.dn, cleartext_name, [cleartext_utf8])
304 if attvals is not None:
305 gls.add_attr(obj.identifier.dn, attname, attvals)
309 for i in range(0, spl.sub.num_packages):
310 pkg = spl.sub.packages[i]
311 if pkg.name != "Primary:Kerberos":
313 krb5_old_hex = pkg.data
315 if krb5_old_hex is not None:
316 krb5_old_raw = binascii.a2b_hex(krb5_old_hex)
317 krb5_old = ndr_unpack(drsblobs.package_PrimaryKerberosBlob, krb5_old_raw, allow_remaining=True)
319 #print '%s' % ndr_print(krb5_old)
323 for i in range(0, spl.sub.num_packages):
324 pkg = spl.sub.packages[i]
325 if pkg.name != "Primary:Kerberos-Newer-Keys":
327 krb5_new_hex = pkg.data
329 if krb5_new_hex is not None:
330 krb5_new_raw = binascii.a2b_hex(krb5_new_hex)
331 krb5_new = ndr_unpack(drsblobs.package_PrimaryKerberosBlob, krb5_new_raw, allow_remaining=True)
333 #print '%s' % ndr_print(krb5_new)
335 obj_item = obj_item.next_object
339 if ctr.more_data == 0:
340 store_hwm = ctr.new_highwatermark
342 store_utdv = drsblobs.replUpToDateVectorBlob()
343 store_utdv.version = ctr.uptodateness_vector.version
344 store_utdv_ctr = store_utdv.ctr
345 store_utdv_ctr.count = ctr.uptodateness_vector.count
346 store_utdv_ctr.cursors = ctr.uptodateness_vector.cursors
347 store_utdv.ctr = store_utdv_ctr
349 #print "%s" % ndr_print(store_hwm)
350 #print "%s" % ndr_print(store_utdv)
352 store_hwm_blob = ndr_pack(store_hwm)
353 store_utdv_blob = ndr_pack(store_utdv)
356 # uint32_t version '1'
357 # uint32_t dn_str_len
358 # uint32_t dn_str_ofs
359 # uint32_t hwm_blob_len
360 # uint32_t hwm_blob_ofs
361 # uint32_t utdv_blob_len
362 # uint32_t utdv_blob_ofs
363 store_hdr_len = 7 * 4
364 dn_ofs = store_hdr_len
365 hwm_ofs = dn_ofs + len(dn)
366 utdv_ofs = hwm_ofs + len(store_hwm_blob)
367 store_blob = struct.pack("<LLLLLLL", 1, \
369 len(store_hwm_blob), hwm_ofs, \
370 len(store_utdv_blob), utdv_ofs) + \
371 dn + store_hwm_blob + store_utdv_blob
373 tmp_file = "%s.tmp" % cookie_file
374 f = open(tmp_file, 'wb')
377 os.rename(tmp_file, cookie_file)
379 print "# up to usn[%d]" % (ctr.new_highwatermark.highest_usn)
381 print "# up to tmp_usn[%d]" % (ctr.new_highwatermark.highest_usn)
382 req8.highwatermark.tmp_highest_usn = ctr.new_highwatermark.tmp_highest_usn