201212061800 14dll6

explained decrypted filler

seed 54

Metadata

Post ID: 14dll6
Title: 201212061800 → 2012-12-06 18:00 on A858's clock
Posted (UTC): 2012-12-06 10:00:14
Timezone: UTC+8 · title 18:00 against posted 10:00 UTC
Author: [deleted]
Account: A858DE45F56D9BC9 main account
Subreddit: r/A858DE45F56D9BC9 the main subreddit
Category: F3 filler: 3DES(name/title) → GUID list, seed known
Size: 3,792 hex characters · 1,896 bytes
Cipher: 3DES-EDE2 (two-key Triple DES), ECB, PKCS7
Key: MD5(A858DE45F56D9BC9201212061800) = d04db672b758262144040be689846270 (name+title)
GUIDs: 59
Filler GUID seed: new Random(54).Next(9) ✓ verified
Run: Run 39 (seed 1,106,402,812) (seed)
Draw: 67 · predicted N = 59 ✓
Machine boot: 2012-11-20 22:02–00:02 (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)2012Encrypted masked GUID listkey: name+titlerun: seed

From the post to its content

As posted (encrypted)

2C53E0EEEFBBAAF3 EB311E1EAC6BEF75 A55714E2DD5FB4CA 84FBAD4FEA0C5CA7 B013C4C53604688C B232FF001F2F6E95 83CD602E0C8CB864 A2E842B8D68CA212 3C37C98E4E688042 B29D1B78581FD7D5 B641985DB6148063 E6603C0B8311CB63 5DFBA5A8C07AAAC5 7BAC833A9184AF35 8060E7C3E94FE32E 467918C4395A8E9F B96538AEBDD78761 6EA921A88A9FEC1B A53B8CAA3F30D8B0 A80B4C49B4DDDFD5 C5B678D628C808DA C0B0639099414E65 402117D86F4EB1FC 29FEA39178F0C2A9 FDD89FAD9F1A60CA BE02EE10CE47F7C9 A29AD3F1E17A3790 727581E735605001 680601ED47FE9856 17DC33ED8E613244 90BCB38FE34A830B D79F401EF33EC2B9 A24E32815963988E 7C7A06621E24CD26 42BA5A65180FAA7B 90181B61BDC7B56B C27A1AD1808D9505 8C820C0AC56D6A56 945C4397D317B769 D2EC308C8D8A1523 9F3F971B7966537A AF4673932F11BB1A 0CB4518BE32AA4BF 02B93D343735E4EB 62B68EC88448BA53 BB9CC12FA65F3A07 BFF615E27BFCF94F 9D6A8D248F65C7E1 8536615318D386F5 D09BC41FB1FBEF0B 172F1D6426C4A92E 432F2E91F0DF0A4B 84CD97E7BEF0E7DE 417B40A04DA61244 D7DD98A73BEDBDC0 A16EABEAFA8C567D 51D326561E75A89E 2FE27D4375CCCF6E A40094A88AD3F2B2 B3AA23FF4F520D58 4930D7104EA2A100 510FAF81B5844ADF 04F5060F45675938 7C9632654AC7193A E759C4B51FED0892 9E4ABA8FECB98BCD 119F02F78FC35414 8E95100335AAD3F2 5E0F7AC06DE52FB9 6034A3303F6BD193 9E850FD355B7D866 C2D5A51EE5C54EB4 357D564F76A1C1BB B7BD93931734A0D9 FC8B6D58F4252B1C C11A0326B33CD8ED 3BFEBC7443A4DAAC AE87C774D64BA919 B84E45372F605F73 1222FCC12BFD1956 480660B8DBC8D867 FEC079F0A982119A 70AB7DE436A02CB1 787D6F793DBF7FBC 594DB2A5057FDAE4 2DB8EB1AFFA1C998 18E4F5C10D92DF68 11041F2F25BF33F8 8D94871792873755 8A1017C18C1762E4 F80DABE9489E5FC2 5DE1DA36DADE5E67 E7DE486996312A2A 70C912C430410EFB 18149947C3C9375E 83BBE6444E6C422F 41A1527A0966736E 4E8B6DC6C1713486 D6BC88A00BDA7F54 273C82EB7E4FF80D 9461CEEBF08E34DE 47ED0B78D0CD06B2 E1BA1975164C2656 EE21BD11F6078C02 F559D566D0AC3FEE 6A71202F5A39F475 7808C50E2E063D81 9D72EA2156FF87AB 87A279BABE732BAB F53ED9074431503E 9FA90C71A805419C 6EF52A2D4C34608C 5C95B022F0A4802F 78C14EEB35075ED4 4F790589735029FA 4658E69F86A3054A 77A4586817F4EE0B 6E59BD0EDF6036EA 3287F79DAD80FBA7 6DB839B1C8DF54BA 244B914C2B546698 421670182F2D5137 F80E9B2B77E470BA 3FF6B0012BD7730D 2E634A08D35176A3 D98783F09F133193 7F32AEAB5D503E58 39AEFD085EEDF7EE AFED071D60EFB27E DF9A7A4CEB19B6D3 2B230009826154BF DC8427E841D9F6BC 801F0C7CFEEA15B6 0A35F526059B3BAB 38867118308F2C57 5091D4F409CFAF0B 6ADDDC6C38A11693 324272B82634241C 6006759F0D884403 A3B3E5CDAA547259 BDEAFF02051D41AB 9AAE4FC63BE917D6 CD2583096FD7D3EC 5DE31E5941A51AE1 6392BA659F99FB55 E83EF367337EB2B8 A11879C937ED88B8 0F51084812C9DC15 46B79DA4DC04CD6D B72D9CFC8499470B 4BED4C9A556E4CE4 80BD85E0484457BA 8FA323D7669089AB 9618BFEA1B1E6143 D70D38A6779CFD23 89133113F0047BD0 C714682132D18FA5 4D2AD79ECA9CAE91 43992F5579D3659A E1109113039920E0 0CC8C5F0257F86D9 1A242025D50CDC1B 4AD1FB4277424393 E2440469C27DFDEB BE8565C0692F7C0E 6BFF7F41E056ABC2 7D64E518EC9D0DC1 57AA98E7CF6C2ABA 80502509AD25FAF3 53140E1001D1D9E4 701A9BBC7F3B897F 765BDD8A59D03B52 2CF9996772528F35 B02E5C56A6A30CE3 D999975A51AA4635 4242AD20EE66FCE9 76E8019FAC2DEFD4 830BE3A9B6C27396 702AFB61630B054B BC5537922BEB002A EFB53041C2FD3C4A A839D76482816446 BA1C17DBB6C7B838 616AFEE1024998A3 C2D2B94373F697C2 6FF209F6195D57E1 C1AD974C80C7974B 196C8EEE1FBE50BE 8072FF8E1EDB83FF A5570A9CFCD04DD3 BB77CEB0F7F1BD0C D0F7C8B758F87838 A79AFD1635CD090C 236EEC0D72BCADE5 1D13766508E6B846 17DE52BC764F45A7 0ACE34FEAD54169A 98FF750DCAAEBE00 7B65A863002E73F9 AD83D556DFDD40AC CB35532EFBF9A199 FB9D22BDFC1A20BF 2BE41931B378BA13 AB06174900C1C70E 25FD6C5066BFB516 A5669AA8BA310F21 FCA2FA07F7E79518 4106DC883DF765AD 16F576E804D30667 104AEB60C9149631 2D6C684633574191 631DF249AD088D35 BF6253E9CB18C87B E6EB95CC1FA9F274 49C89AB8E99C50BE 9F8FA64C44A64C4B 3D4FC2A3A92C7AD6 8F44995A61F1A099 B458559932099253 C5C51C08AD6A51B3 7B10FE25932E4456 E47486DA657204B2 1C46E9E5541CA2F5 A118ACDE8C22261C 7FA6B9D9ABEEE8AC 6190E3C5BE7CB66C 27B4D2C84E2C3D70 47AAB1D883019193 B476E7FEA1FFA933 79B8B41949A4D76C 2A15C2E913FBE15A 5E31ECE0226543C7 3C338C98D2B50F0E 99D907BEAA305206 0EA6F55E029FCC52 D3F27277560AFA27 B9BD7A1403E8EEE1

Read the ciphertext. Strip whitespace: 3,792 hex characters = 1,896 bytes = 237 8-byte 3DES blocks.
Derive the key. Password = A858DE45F56D9BC9201212061800 (name+title). Key = MD5(password) = d04db672b758262144040be689846270, used as a two-key 3DES key.
Decrypt. 3DES-EDE2 in ECB mode, then strip the PKCS7 padding. The plaintext is 59 GUIDs as hex (shown below).

Decrypted: GUID list

  1 45cbd878-bd4d-801e-8d2a-96a34cd7cb95
  2 9141e99a-f2a6-5521-82e9-b4f148c2720e
  3 4d8bc344-a6dc-4533-a438-382b0ff63fb6
  4 c7328061-c378-08c3-bb70-719a5a496c9a
  5 e015a0a3-9ac1-573a-89cb-646a19ffd974
  6 e4bd7c53-7131-6486-b9bf-65813571e80c
  7 eae4f33a-2e98-02e1-b52d-2c185850d044
  8 de04a7a8-3464-47d6-84b5-8a27073d7948
  9 53976554-7249-5a49-af69-6cfb50352412
 10 50c9b0a5-823d-1977-adc3-3ef48ff2ef73
 11 633fc19b-9e0a-05c4-a70e-498eca311c26
 12 642ef026-1ff4-501e-9315-39642cdb6cd0
 13 559e52a8-376c-68ed-96eb-2d045bc229e6
 14 03521d11-f94d-586e-8156-5159ac0b771c
 15 a6e768fc-2971-77a5-aeb2-b368d3439c46
 16 52a075d9-860e-6a84-b681-4205757bb7c3
 17 dcad7882-0879-55b5-84a9-bc54e43a6e42
 18 64a286a0-7591-4677-8873-29fd419630cb
 19 f97d9e99-67af-1baa-8703-d2cf942605a4
 20 18a43c4b-8a29-20bc-9681-59f269dd60f9
 21 8ade329f-2fb2-8bd4-920d-640ad2e6b39c
 22 b681bf9b-574b-0fb7-969f-5ba1db151dc8
 23 bf063d60-22a3-114b-ac4d-351136037fee
 24 61c0f84d-65c0-8a7b-b342-9972aa5184c0
 25 d34f0acb-aa93-80ba-a273-9e9774d5037d
 26 be4f291b-3496-261b-81de-cef3e42194c5
 27 bcc02480-cc8c-369b-87e3-e55d33dc3faa
 28 e4088646-37ce-12a7-9b1a-76a08e16e76d
 29 caede838-e761-4127-a16b-510d55cb0c30
 30 de1d8205-fe0c-582e-8275-eed5006e81ad
 31 a628b897-ebb2-1181-8972-e7f47f622b15
 32 0577bc51-a8fa-6d84-8d3e-98d2e96aa9f2
 33 e5e2a5e0-e18b-0423-a970-6f31abb02c0f
 34 d1a40d23-f178-3941-ac41-cc6510ed576f
 35 4e85e666-8337-4fb3-8307-c158487be4aa
 36 1e83f1af-b97d-07f9-9a41-4612e767fe99
 37 1d07d1ad-484f-6ab1-8640-9f5fe8d937b3
 38 0c3807c2-d70e-11b1-827f-1ee1c842d1b1
 39 7836762c-c080-5acc-9eb8-64d241cb4cb5
 40 b2289d75-f686-58dd-8b96-776494511ac7
 41 acd4eab2-b531-812b-be70-c77ad920fbce
 42 9d9c6256-4a08-6b4d-8cab-9e49f1598628
 43 f7409420-c28d-05e4-9a3e-9b3fdf7634ed
 44 40cc56e4-5aff-3060-be55-e1fe5d8369e0
 45 3135298d-254f-3f93-bab3-b73e12a368a4
 46 06bff7ce-7322-35cc-be4f-a4d32db71518
 47 b35c582c-28ca-6f49-843a-a10971f48ad3
 48 cdcfa65d-075f-2937-8165-bc6633ac7e66
 49 7f4a60e8-0302-30f0-b561-c9cdbb8d4c0f
 50 3fdfd9b9-70ff-3a67-b40a-52d8343f72bb
 51 a59f23e1-064d-6b75-b7ea-4083f9fdb990
 52 74454dee-4eb4-0bab-85cb-256cf201b10e
 53 50d4e20e-b50c-7d40-8add-b5c3ce348050
 54 91f004d0-a1a8-44c4-a7dc-48868776d8bc
 55 36987508-f3cb-0a1d-8b61-57769b0645f3
 56 8b75b44f-a3d1-7e89-8598-29ac1dffc0dd
 57 46fcedb7-0a67-4c4e-8009-788523b3527f
 58 7d7502da-6194-5d8a-b9cc-23f27447ead6
 59 9ba17c46-de03-0e4e-a459-db680e6bccb0

Explanation

Explain the mask digits. The version nibble (13th hex digit) of each GUID, read in order, gives 85405604510565765412801882314516034061558603336233607407450. Exactly this sequence comes out of new Random(54).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 67 of Run 39 (seed 1,106,402,812): new Random(1106402812), Next(8,64) per post. The RNG predicts N = 59; the post has N = 59 ✓. The seed is the machine's uptime in ms when the app started (boot 2012-11-20 22:02–00:02).
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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