201210171400 11m5tb

explained decrypted filler

seed 308

Metadata

Post ID: 11m5tb
Title: 201210171400 → 2012-10-17 14:00 on A858's clock
Posted (UTC): 2012-10-17 05:00:02
Timezone: UTC+9 · title 14:00 against posted 05:00 UTC
Author: [deleted]
Account: A858DE45F56D9BC9 main account
Subreddit: r/A858DE45F56D9BC9 the main subreddit
Category: F3 filler: 3DES(name/title) → GUID list, seed known
Size: 3,984 hex characters · 1,992 bytes
Cipher: 3DES-EDE2 (two-key Triple DES), ECB, PKCS7
Key: MD5(A858DE45F56D9BC9201210171400) = ff509dab448efe64865ee14e8fdf2883 (name+title)
GUIDs: 62
Filler GUID seed: new Random(308).Next(9) ✓ verified
Run: Run 37 (seed 425,468,968) (seed)
Draw: 4 · predicted N = 62 ✓
Machine boot: 2012-10-10 14:48–22:48 (seed = uptime at app start)
Sources: community-archive, arctic-shift · body from community-archive
Links: Reddit · Arctic Shift · JSON
Score · comments: 6 · 1
Tags: automated (decryptable)2012Encrypted masked GUID listkey: name+titlerun: seed

From the post to its content

As posted (encrypted)

A04D4C53CBFF08F7 606823F656D578EF 16BC6A43588F7363 C9531671462FFED8 70423371F9930F4C 07DFE63D4A7B9D09 5031E4DE317213FA 6B3250345EFD5D87 AA0590EB3FA846E3 DC9E20F548A91007 C1D924BC0B8032E3 49F1820EF8CE80EC A955C54818C9777D 602090F262299553 0BA5F8FE8D22FE36 9CC5A33C785E0762 BCE9F8980DB798F2 566E3EC3A6E99530 23BB0257CF574D9A BACD918FBCD761CC FDDAE25035946789 41E601FF818F7BCF 3D737805CC099DAB E0828ED8EA090654 80CB155F1C0B5E4E EEA0C5ED0543A602 F3048ABCB7C7969D A6854C71A452502B 28A348A0470BE511 DAAED9623E3E400E 6497F949DD9C8201 B27A6154DBCF9922 F1E3A4F4857A2C0A B831C18D0F0D698E 40C70D8ED053F364 6E153B3EF2BACD35 444F0C45AC4DD9A7 B2C685F5615CBE4C 45E737F57B88BA95 667D3913A5189E4F 35594DE174B901AF 27FFE0CA219B09B7 B6FD2CFAF18D3836 4CAF271484EFF775 085F65C6AB78D70B 619142EF00E3BFFC C48C1BB3AA75796A F25853FF994B4FC8 56173AE5C2232A66 42F9D25BBC487A2D 84A8012ED7B1F6BB 9AFAE34F23E39EFD 71C19605C4AD9CAE 82D6E0A41CAEA608 7795F0F3B25801F2 37D53736F2721FFC 7A1CAA6A3AA38865 A6F05DCE2ED17B9B 7374F219606D954B 749EF7BC03F32616 3BBC4F1F24DA4F8B 0FAFBA2A7213C334 495741CCFD89D670 5B58A5CFC20DC533 E0A39440B661EAC4 B27ED57923890A77 59BFDAD1C73DFB50 C9509DDE29EF4096 37D03A63424D7EA7 37F54F091B393446 5E7F852FE72BEB00 34960DFBC2D22EAA AAE4F1A5DEEE57D3 6150B0C879F86EA2 62DCAEF3C7660A47 CA8EC7C20D1B3CE9 964FECFF727FE9D1 18C9C1376B1FC3DD 4A02FA9B550C6970 7B77E6C59AB56055 D90C1F47DCC42EEC 2CD72F9E31C1FE05 E400954AEDAF8B88 2073768EE712B9E4 DDEE0EF2BEADEAC3 1043610314CBFBFA 71644E9FC9DCE081 2A650507078C4647 AD29C40C70BE97A5 94945E3F0249B1F1 59088089E5501160 7FFD4801DBE8FB7B 244E64BE95CA02D1 8FF3659CFBC42105 78CC2E23D3751B83 D3163DA3327FDFCC AD89816B16B98743 4DC3B2C823615E7B 006D66D92653BAD3 BE27BC6FECF9C348 F77FEBAD8E8E91B9 F26B596C2E02FA57 421D68DC2BBCE0D4 18DD4D2B3C415E91 6DAA4A8FC99A8C21 917ED949BE4F7900 895291718597ADB6 B986D2F64371B4E7 1BDF5602AFDB5343 579F81CAF50AA251 1F514540344C7736 159DE38B7B1C722D 24149821F87D39B8 F68AF6C6C6DA20CA A14CF6C328F0A09E E23293CFA1E5C4BD AA492D1F475EF7E3 F81621AA15746666 24EFADDBFED89E78 2945FFF033221EF8 DD62D2ED10933379 80D45E88699C07D2 5D18C51B2168BA97 4BA96F0486B23EC4 2AAAA54A43210B7A AFBAA87BC02F0301 A4E49BFD6F683A6E C7DEEEBB3A9A59ED AE2E93FE8A7C224D 1705FF083B729EDF 60E8D01B9E953A08 F982397B90657935 65C21E696C107EFD 1D8BE099CB2D0413 F9584AE92E80083D B874CDD77103EB07 5A7253CEE0414E69 AC0D9907862D0111 9F70F4F620D86B3B 26B37F7723FDB167 E20F7070E9CECC86 FCDC06A41C504C5A B0C7924A8CA792ED F77E5BBDBCAB5720 EC4695821669C513 4B6831FAADF11881 D25CB5DE964AD45A 8A36120148E7568A 3FAA05E00B324400 83F52E130AF716AD DEF306B3404FCFCF 92E963AF5CC56C50 8A66EE1EFFCD5865 072D1632BAB21966 79FB2B4A3BE57FAD C058D31AD1170411 187B918F39819153 58D80612CBC03347 0E41B1EB42D7FEB9 F3B998AD878FA4DE 95B680360D50356D 8ED66BF092FC9BDA 94CD77F352ADFFC0 02F500A3D0B80D9D 8714F2C879D73A50 5A5188DF4DF12853 A46471BFA89EED39 A7F4E958208D95D0 1F134B7A2D238FE2 E8A13B6E3FE25178 C4A99AD6E940CAAF 349B117D624301F2 7F4AFBEA79CB4E54 01AC6C02E6DB8902 1594F86DDF1C13ED 56BA4DF48BA6CD4C 0F83F6BD5A389DC3 62BBD170151B1C65 3D755B42983DB99F 2F3BF35B97A00778 1B1F882C23A7DB59 45BE1AD6E2D51397 943CBC9A5C9129D5 F30124E3C478D7EA 24CE46E12B26209C 7439D75FD75102F0 ABEDDC8BD8239A73 55CB85E4A6B1E47C B52EDE8D2D350E87 2BF1A570C74D5B95 E618B70ADC77E4AC A5F68C6B53339622 E44679F9B6980C09 1192742EB3DCAC1D 3C74079EB1430EFA 06A06CFAF59BFA54 591C289BA3941C53 06F9D5DAA3DFF593 6443FE4735FA0407 9DFBBFA684F5240B 32F1CD2A41936858 9D754D899B928C86 2F2B0BAF9902450E 6BF0AFB1A80965CC F50127CB246EF663 86245B96EA990655 283BDA3CABBBCDB0 E4298DF7D7A35E43 9EB5F912609A15C5 5C001EA1A1A51B67 FD4BA136897A0BEC 3180B448EBF69927 8C38D77CDA0D1CB4 0DAF4A7BCDD59E8B 8C10A476E84DDE5C 620AD44E3130FFE1 E61C8AD535B519FE B8689B1B5FA809FA 4D48C164A791F3FF B0025F6C220FF897 6FBE68E9474E06DD E1C418D81C12287E 51CC486D31381C5E A0BCA5EDC90953E6 7FCD8D1A7EEF2C4F 2327FE8B3681DC00 381143D96594FEBC D8A41710A7EADE71 E0C752793585DFFE 8B1C5BAD0DF8C7A2 CA4DFD15626795F8 F37C46E0FD148E27 5A729C8F40C2DD22 7D8CD0028C9340ED DA567A48AFA5CFB3 93979A737BA13D19 37710F4B61B925D4 B8547E7A76EA58DC EF07C8AF605A31E6 C1FA641774A80883 4E0C664041C3D019 52916A3FAB9FE2D8 8B56F14CB9C2561B FEF51603F1533265 9774336EC7EC598D B0B35DD83FD89AB5 64875059F5685D22 E34ACD5F24A15914 74F013600DE47028

Read the ciphertext. Strip whitespace: 3,984 hex characters = 1,992 bytes = 249 8-byte 3DES blocks.
Derive the key. Password = A858DE45F56D9BC9201210171400 (name+title). Key = MD5(password) = ff509dab448efe64865ee14e8fdf2883, used as a two-key 3DES key.
Decrypt. 3DES-EDE2 in ECB mode, then strip the PKCS7 padding. The plaintext is 62 GUIDs as hex (shown below).

Decrypted: GUID list

  1 943cfc17-56e8-5931-9146-d877a852f1f4
  2 72311332-13e8-100e-9696-7223f4ce5b1c
  3 841217dd-2895-05fb-b028-67a0001b9782
  4 acea56ff-22b8-29c7-81d6-46cd03432c6c
  5 a32fed1f-2039-25ac-a131-6b4f3134daed
  6 2b66f613-6286-693b-874b-53381dd7b69a
  7 0422da00-57b1-8fb3-91f7-72bc81b08cb5
  8 9029f5bc-0a7a-809b-b8cd-3f2037defe0b
  9 f1229ce5-4d21-0d0b-8236-d687a1b1da27
 10 f194e98c-3ac4-7beb-b27d-69a6fd942e62
 11 3b24bd5a-dd0e-1c9a-87c3-3369e236b7da
 12 fd7d3613-fa9a-8388-a950-3fcc7986073f
 13 a7974b6f-4049-32ae-b421-6d7293f15c74
 14 78d7fffc-af0e-6779-8fa2-711315e004d4
 15 dcf66a83-7c94-50ba-813e-6546078d22bb
 16 a392a466-36f9-395d-b8e6-eea99e8e9ed3
 17 ec4b2391-de19-25b2-b044-d8a713aed792
 18 203240d5-cca4-8eef-b121-d1ce0e9c5e90
 19 01b18304-0151-0e02-9648-b730f9dc6b6a
 20 c4339f8f-9701-51ad-87fb-e18586a43ba1
 21 dbf4b5c2-7ae5-636e-9838-cce56e5d1cc1
 22 02a233df-759a-31a8-ac04-9a9b8da1ad28
 23 115db597-603d-09c9-bee5-fcca065102fa
 24 2ea03981-6ecb-5b92-bdbc-35ad362dbea1
 25 35ffd9a7-80ce-77d6-8042-cbfd70a52a21
 26 97669a94-3591-5e35-8163-8b7f9585458c
 27 94a67dc6-68f0-697a-92d6-9914b6bd7f66
 28 8a5b5a3a-f108-45dc-a4d7-34980d8ca9af
 29 6a900fff-f0df-5b62-95d5-889c4cd263d5
 30 47a8cb73-167f-1e4c-ba79-2bb635f721f0
 31 2ea1da49-2ed6-8977-ac11-5855275f67d6
 32 25cf9156-b10b-5217-bd8c-489d0bcfc46b
 33 5df8f7ed-49f0-1848-8ffe-8d977f4ba36d
 34 f88aead3-790e-6e0c-b736-288e6346540c
 35 044f5310-1fe0-107b-ac9b-5ba9f7ff43fc
 36 454f0cbc-a9b8-058e-b560-369cf569faea
 37 aa86fad4-5973-1b05-8a47-788d6ba6f00a
 38 e1067a4d-dbbd-2d2e-a112-7aa1d323fe4a
 39 6b7ad79d-9a08-04e5-87d1-788b87620260
 40 fda5b47d-e45b-7fa4-a1de-e8007e3df04e
 41 9049e467-7a32-877a-90fb-9ce875b63c30
 42 ebe11987-5406-27ed-8e5c-bc82307c5e5f
 43 80ffb63a-79c6-3783-b517-d44c12f29d03
 44 bcb46074-5f9c-1a31-8ba9-27874f595371
 45 35fc8949-d8f8-2aba-a438-dfb5ece69d7f
 46 f0960f80-3dca-099e-bae6-bb5354f96488
 47 4c56244a-df5f-1c22-9465-f6a641fa8663
 48 e9f0fe5a-fac4-24f0-a3b0-751690024bb3
 49 7af0d53d-8e01-22c6-b139-84ec437c2c45
 50 a98b1202-1a56-8654-a472-2da6c1f2c081
 51 28ae7056-39c5-1a37-94cd-34b2137694e3
 52 9040e89f-d21e-4bba-97ea-21abd60d6db3
 53 42299c47-3e19-4084-ad9e-6da92b9b84a5
 54 8728ff9e-ad35-2142-9e20-9acf78e4b78f
 55 2ace2a01-0ccc-7742-a547-fec556b8447d
 56 f7037fb1-93cc-1329-8d75-c4392a5a7a2c
 57 c5df6506-6de4-132d-b43d-ac25704fbf3b
 58 36622029-180d-3e85-8aaa-e2698ab3c2fe
 59 9f8fdd4d-34ae-3517-8b9a-2c68611a16e0
 60 813e184c-ffed-5b37-b56d-147474a7d723
 61 9a216c20-25d7-863c-8722-a3517ee9eea1
 62 a233fced-9ad0-3ffd-bc83-0a13c7f0241a

Explanation

Explain the mask digits. The version nibble (13th hex digit) of each GUID, read in order, gives 51022688071836532805630575645185161012078231201228144271133583. Exactly this sequence comes out of new Random(308).Next(9): the per-post millisecond seed of the mask generator. The other 30 hex digits of each GUID are Guid.NewGuid() output and carry no message.
Explain the count. This post is draw 4 of Run 37 (seed 425,468,968): new Random(425468968), Next(8,64) per post. The RNG predicts N = 62; the post has N = 62 ✓. The seed is the machine's uptime in ms when the app started (boot 2012-10-10 14:48–22:48).
Conclusion. Filler. The content is fully explained by the two RNGs.

Metadata

From the post to its content

As posted (encrypted)

Decrypted: GUID list

Explanation

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