201308090006 1jzde6

explained decrypted filler

seed 537

Metadata

Post ID: 1jzde6
Title: 201308090006 → 2013-08-09 00:06 on A858's clock
Posted (UTC): 2013-08-08 21:06:56
Timezone: UTC+3 · title 00:06 against posted 21:06 UTC
Author: [deleted]
Account: A858DE45F56D9BC9 main account
Subreddit: r/A858DE45F56D9BC9 the main subreddit
Category: F3 filler: 3DES(name/title) → GUID list, seed known
Size: 3,856 hex characters · 1,928 bytes
Cipher: 3DES-EDE2 (two-key Triple DES), ECB, PKCS7
Key: MD5(A858DE45F56D9BC9201308090006) = f0e663416ae3e3ce6dca445e52cb4a49 (name+title)
GUIDs: 60
Filler GUID seed: new Random(537).Next(9) ✓ verified
Run: Run 50 (seed 2,278,890) (seed)
Draw: 24 · predicted N = 60 ✓
Machine boot: 2013-08-05 20:29–23:29 (seed = uptime at app start)
Sources: community-archive, arctic-shift · body from community-archive
Links: Reddit · Arctic Shift · JSON
Score · comments: 0 · 0
Tags: automated (decryptable)2013Encrypted masked GUID listkey: name+titlerun: seed

From the post to its content

As posted (encrypted)

6D351535CE58F106 332CD47286F2A8DA D3EA8F2E03FA9564 C0A3B4B9CB297EDA 4EDEF0AA94DBCD58 5862F3FA6AC97739 32DCE2E10E0256C0 99C9DAD7E2EBFB36 891A8727F338605C EE7AA733B508B554 60728CF0D4CC1FD3 BE4430E9094C69E5 BE699EE8A2690EF1 E49E8D6BEC67141D 9AB1FD42E88CBEC1 CF459F6DC17F2B2F 6292F3A3D85C8787 EC2EDD440548C8D2 C9492A7E051728A9 7981538646BCB221 004C808E2B44D818 3D1389E5D240D07E 5FC3B0B36DE4A6B2 665B0302D7275EE6 645A094A94146C5B CCFA328010939E58 CC87D89038809FFD 2F6839C1CBFCE5A2 24180F40261F3B68 626CA64673BCD031 D27946890356463D C0A02C8BE482AFDD 00599BD1D0DB3A5C 46D14CD16EDF6756 1E10CEFAF62D3EA2 0BA60001C8D8D15E A0BCEDB69E8990AD 64A149A91C3CBE36 B28447CC415F9C1B 3ACC822E594A4306 E2677645467179EE 2551CDC6E46DEBCF E7268D0CFC941BF6 232D2D3A4EC065C5 E4FF0681189FD98A 8F42CDEBE446B593 0E8BDDBF5BCE789A 3FD230B1020AD802 6DE9B6664A965BA3 FFE872E0AF662292 10CC433531958A28 DF995DE106F93B45 6B498A0EE468A196 9E45F1938B79E2A7 BDAD41FB4B74D1DF E87ECBCDCAB0C943 404B37D4CB24C751 3A91906F50650B5F CA85494EF13F4909 0470E032B880EA16 010CDE8DD63A3E3A EA5217B79DF4E825 ECBA644C0D931673 F7C8048F4B958EC2 C84497380CA1F11A A6EA222BE5379868 95F8FA350E7EB4F0 B04E73578F6AF246 D93660DDE0CCD6A7 61982A114F8FB8A4 F963D8A7AE3D86D2 A771B7CA75B13002 7AA7967F4FC2FBF1 A8B7DBF34081DF5C F50B74DAD56A7E30 D3821804EFB71E21 D803EF13E5D32C04 107EC718FED8032F 232B7ADBC0C1D9EC BDB0AD9BB442B5CE 335E97633EB6D7CB 60090952EF224B1C 6747A2CDA4EA5C63 6DD556D70C63B2BD E85293578D900884 69B72D7D04028A49 BC69EDFB0555BA75 E648F03B7E86D602 B88C452AB8B4940B 20C8365E24AC35CA B0BC35340D1F23EE C2719D02505646AC AAB66DCE551CC151 A13717B97851F80A 7E7C670F6248A017 1E5B0D2FAC2626A2 572ADC1FAF1725AB F60642BF45D6399A 37CA077472CFB3EE ACECE74ADC34D82B 0C361DA1DAA4C35B 8EC1D297101BEDC6 69BC3BE35E2D1355 0AAC68018D310ACD D343CA65319785EF D24491381E173BAB 03E8C0A821AC21AE 9F72AD90982A9827 818B677F5300FED7 2876769024ED024E B16D3B08552514AE DBD150F1339BAC06 B468CD151B5E7792 7E7B2D85189570B0 7DAB12991E00888B B6B6E03C9BF2A3F7 2A80B7F7A09729E6 FCDB5C595CB04A26 C3E75D7D9C2324C6 C2C6ABA9D0EF258A A96520790A6D1F0D 832EDC4C382D5432 E61AADD21F6AD8D2 A5D57B05A877C72F EDA9D1FF64702612 A2A9C20CB4AEBD06 5D714AB18549D488 8608362CF044B326 255105D6D287D3F2 E307F8CC40E9A02A 6BCC1FA63B167D49 C25626DB6F886671 DC780D3933E0D36E EA044404E59F501B 29C4452DBE9FA969 F0B10F5F1D3D9A02 5F32249C7ED0A416 DC2C188E32D7A095 814C0137F8695081 6C89502882438520 D4B27D80F75DED03 1929C1036B3B6950 0E8E8D3D09581031 9EB5FD8065A15511 3D29E2E05D11B721 F7E6A641CF72D02C 9187ACBBE5BF872A F5B1BA38CD669052 82F06184A5D01F11 8061768D1F0C1D6C 2CF7E5D9EF0307FB 19F11B3FA2B21EFE 3216EA1F713D8579 624A53DBD7097D8F 8A61302DC273916B 8EF7B165776A8971 10A6803EA290BD70 A6AAE974563AB23D CB8D59C8D1552558 336390A142A93349 69BE740DB6C56AE2 830339AAB0CF023C 637B2C33085DFB24 893ACE33B3DA3D82 9AEB111A81281774 8E456A159A958D71 BCDB20F968C687EB 55F68919F5C07F95 7F6F12F122A00C12 D293416F8D6CF3DD 4BC1703140744E80 6D08569519300A44 1C93096FBE6F89DD A84D164F4AEBC35E 3205C4AF8EF7C2C4 071E26D418200F66 CA686458690B16A3 D99FA6040E337986 9E1F586F70DEDA23 79822C33E81C2BE9 38BFEB0346F5CDC2 488255D4D073E353 361B028C9B697E60 5C370CCE92003413 7BA88440321C8D7C 02B28BD293085E56 8D658F8880F43677 09EA5F9CBA030B06 ADDF0702CBE8C53D 0278DB4320DCC028 6DB5BA6818897CD7 87D7A9AFF237E163 51115372AEE6346C 73DD9566F0E3BD11 9760D0B6DC616469 8CCE12D34CD275EE 2562678B4E7FB893 11460DCB9AC291F1 C6C13A8247BD6514 47858351158BB96C 26B9B2F4CB00F380 93B68E7FAC6BE283 6550B4259766ABC1 B18658DE6B29E575 7191DB42D171E614 090793D3F6D24DBF 5FDEED98AAD8A135 803E04D4666B9284 BDBBE37DF8E1141D B9590CAB04477D2A 4986C19FFFDF7CDD 841EECCED4D75D61 BC378FAEFC76B7EB AD80FB555B3FE3D0 C9EA702B6851A911 284F8C3388BBF86A F2ED0DF5428DBE9D A4A2BE6528DA05BD 3EC36497C3F70206 02224F18AD768CE4 08C2AB3387372B25 63F427A7EEC3518F FF2FB9BB1D642575 8DF2BC1479F0F648 23BB7C6F58BAA2CF CDA4B780216A4604 21805BDD43649058 345D14A13A9A24FC A73F368C49DAFBD3 D8F003D0498B1C68 601D4A17F545B203 16904C58F1AB3A8A B8608108135BC372 39A4B7B75D491680 9F557B25A542FE4A 4CEF349BEE8BE43F E8122D58FDC3D08E AD5869F8EE663ECF 0AAE94B45A067BFC E272459CDCCCAF45 18DFEEFF483798A9

Read the ciphertext. Strip whitespace: 3,856 hex characters = 1,928 bytes = 241 8-byte 3DES blocks.
Derive the key. Password = A858DE45F56D9BC9201308090006 (name+title). Key = MD5(password) = f0e663416ae3e3ce6dca445e52cb4a49, used as a two-key 3DES key.
Decrypt. 3DES-EDE2 in ECB mode, then strip the PKCS7 padding. The plaintext is 60 GUIDs as hex (shown below).

Decrypted: GUID list

  1 b2ebeb8c-5153-2286-b10e-2156f6a83193
  2 c6fd4074-f64e-31d8-b220-1cf6b68518c8
  3 476e95ca-15d6-17dc-ad58-bf08ca4f4908
  4 7c00eb4f-181e-1f27-8808-0e6b1333b67d
  5 60021e70-f30b-596b-b8d3-8883f4a02a11
  6 7bf1c90d-3bb8-794c-a8cb-6dff24171079
  7 3fb0b583-5866-4605-ba65-8e7bbe51609e
  8 e76fd038-1df3-7d1a-a246-aadce4947649
  9 64c73357-41f3-3998-8dcf-2797cc629e99
 10 e6f99691-8f0a-279c-8953-cdac1afd02a8
 11 39aff7df-bad2-8def-98ea-751820910168
 12 e30f075a-adfb-6efa-bdd5-72e01fe74845
 13 a996e250-e53f-786e-8345-e6ea038a8371
 14 33ca0d22-c58a-77a9-a72d-2795303138cc
 15 86404363-d4f8-7181-bf19-ebe3f9f0048b
 16 bacc40be-548d-3d65-a5d4-7ebb54372bd2
 17 0181e004-526c-5c6a-9a49-53c22a2e96d1
 18 e2bcb93c-7789-82fb-8693-67f0ae671944
 19 dcd2020d-3ef0-1bba-8a0f-794a71a827f4
 20 ae4ee68d-e8c9-2607-b33d-1bc2899165b8
 21 d2c80cc2-aed9-153c-8a57-a9ef30887c9d
 22 723b64c5-bbf6-53ce-b51c-d477f5e494cd
 23 897557ba-0899-606c-ae34-73e7e575ecd1
 24 2505ffdc-27a5-50db-a586-f622bd6ddca9
 25 21b1d03e-7374-2424-9e14-385ad64f0a91
 26 3eb424bc-9f6a-8d76-9fd7-e75619433552
 27 9e464279-fc88-58a7-a397-b57dcbce4939
 28 b719527e-98c3-3cd0-bd11-75f3b546ae7f
 29 aa93e190-1e6f-7125-8ea1-901e8dbd26e6
 30 94bd9089-bf27-5c10-ad19-bd8cbb763b73
 31 67fdef80-72e4-39a6-8686-3a748148a291
 32 8a6e3052-a485-854d-823b-3f9ea6bf3537
 33 a315ebfa-822b-258c-be56-4ba6c636da27
 34 06f8189c-e6f3-47e6-b5ed-912195c232bc
 35 3a3b5980-4a4b-1edd-9021-0a02458bfa60
 36 6fd65931-269d-063b-980a-77f415ad9778
 37 1da82dda-743a-701a-af30-36f1d9fea566
 38 0655131f-79c7-31f2-a99b-6cf9e8477fa5
 39 9e43918f-fe17-23ed-aa76-decc810fe6df
 40 2f922a97-7e47-79d9-acf3-a99dbdc2d262
 41 ecb8f9ae-6ed3-6d0c-aa9b-b43b76c827eb
 42 8fa47cb3-2e2d-83f3-bbd6-11b7c288c799
 43 0121359f-bd7f-3480-b7c3-7813f0ba65f1
 44 ce47f6cd-6a84-0d68-a385-dbe31df97f28
 45 8173323d-9f4c-0f13-b62b-f1fed8f196f4
 46 c408a967-2a8e-64bf-99aa-1091cefb7437
 47 6f89409f-3a07-0d0d-96b5-4a477aad865a
 48 ec27f194-3da1-77b0-afdf-1c1abca89b2c
 49 ad0b2009-ff87-5684-b3ae-e90e582bb222
 50 ee85e57f-053a-1e3a-9207-a98f64225cf4
 51 f12751f5-f649-70c2-8907-c76cab0271fd
 52 e0e5bb50-7eee-6565-8201-de452f9385e8
 53 9435f535-f3f8-7288-bccc-89ccc6acd812
 54 61db4c1b-a06b-898f-81a0-7f1a672b6ca3
 55 c5a38101-9bde-6240-98bc-0a7e32706585
 56 fdfae801-8300-6d89-ae6b-cac8f3ccde46
 57 0ab5214b-0447-57e9-9404-b6622c5f71b6
 58 b7ce5a6a-7864-4c4f-9fbf-db19e92662fa
 59 305fa9c1-07e0-7826-a306-a31cdbf7026c
 60 0520b676-4bdf-63df-ab70-97bb8e9d260c

Explanation

Explain the mask digits. The version nibble (13th hex digit) of each GUID, read in order, gives 231157473286777358121565285375382410732768300607517678665476. Exactly this sequence comes out of new Random(537).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 24 of Run 50 (seed 2,278,890): new Random(2278890), 4·Next(8,16) per post. The RNG predicts N = 60; the post has N = 60 ✓. The seed is the machine's uptime in ms when the app started (boot 2013-08-05 20:29–23:29).
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

Related