A858DE45F56D9BC9 archive

201212292200 15nl7z

explained decrypted filler

seed 731

Metadata

Post ID
15nl7z
Title
201212292200 → 2012-12-29 22:00 on A858's clock
Posted (UTC)
2012-12-30 03:00:24
Timezone
UTC−5 · title 22:00 against posted 03:00 UTC
Author
[deleted]
Account
A858DE45F56D9BC9 main account
Subreddit
r/A858DE45F56D9BC9 the main subreddit
Category
F3 filler: 3DES(name/title) → GUID list, seed known
Size
4,112 hex characters · 2,056 bytes
Cipher
3DES-EDE2 (two-key Triple DES), ECB, PKCS7
Key
MD5(A858DE45F56D9BC9201212292200) = 82b1e4d063bf0c1f9f09aea5bea6c21a (name+title)
GUIDs
64
Filler GUID seed
new Random(731).Next(9) ✓ verified
Run
Fixed N=64 (Dec 2012 - Jan 2013) (fixed)
Draw
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: fixed

From the post to its content

As posted (encrypted)

5BF8905EBFA64E30 A83109AA7865D961 76863FF353981CE0 90A367F33C6B7480 C19DDEC5E0F43BB8 425B261142AACA9C AEAA101C2B5A5228 62770006E5FFE720 21F9809FFD75FEE2 F48860EFE430ACC6 0EFBABFBD6E9D64E 2FD9903CC08D041E D64C8F07403DE52E E244CD4531A806EE 605C5AA6C370E1D3 A5FE30F8072E0E5C E02925C4C6C91423 DEF8E47EE9028875 7CF8E336D08C9950 B4397D43728A20BA EF613D6FD1B1C8F0 C16EC4973200B8B2 F1164E8C17D66D7A A7D79CFA9CAED89D 1879E13BFEAD46A4 DEFBDF5CAB422546 9B5B2531EDC1F4A1 95168A897C1E12E9 A2746758463F75DE D90EECB1DFDD88D2 2A23D51953D12D44 2E979E049BB82F77 35CE3ED9DD52A4B0 26259DDA55378AC8 29986499A5E96C25 87050668306C56A0 301D73881C8E8BB3 E62DE9FDF28A0718 899053CE671DC5D9 669F12EFAA85C279 33E4DB51639CC625 5189E32EA4DF2171 5B9416707FF6C148 647018F54373063E 86091897AF649CDC 9F879C23F2AFC17C C4FE122A0123D286 D6FC3650C77ABA54 BBE6CE57FF639520 AE03C998482CE0CC 73080A78F1832FD6 CE1AB6EE2187677D 42D95560CD1E84F9 6E973399E846B95E 89166B8C7721A4A2 3768FD22B47FB96D 76A82D90878EFAFC 0B41ECAC7AB9EC1C 16191A94C25ADCB5 E1C7295A020C659B D11AB0BFB112DCB6 956061732C6BFBCC 258FCE9D2C0C50C2 72809B05E2C4F49A 735B37ECD4D2DBF6 4443FA81705E5AA1 61275006CC8D291F F1FCC3B60E11BE7B F75CD5E5E619FFB1 F76CA7B7F9E97E1E 6516355AAFC1D167 FE28C982603F12CA FAFD5FB12ECD603B 725A49CB753F87F9 9EF1AA79EEC30311 7EF3C72A76B8CA74 F2D21154181E15FE D71D9CEB443BF3CF 8CFBEEC8BADA2DC9 6C5FB30F4F1E039C 61DB9C210589AA86 3379E1FEF3071987 AAA49F8D0BBB8083 5DC7F310182A5B5C A65AB989A46E239C 060A29D83C09DEA0 904656E6DA6860B8 4A41DFA724270C5B 3F7F0111428CEF59 963B309D2A94DE87 045CB15137FAB820 1E05830CB947D641 D2B780E2DD6ECDD4 DB62090B9B2B88EF BC4FB7876F63D311 57C0729A145D0FDB 39B85854EA1CF4D8 1F0D6B077917292A AF58BEB1699438C3 C0EA6AC1A87C42C5 CAD9E35D308C98D4 FDE44637DE0485BB 7C1F54E3398B3D07 B78ED3D39408829C 88F591669265048B DCB695EBAD6F7B63 67C320B120538178 D779F7316F9AAF7F D1D4162DC9F1D7C9 985BA95823DF6DAF A0008B03664513CF 356159E077CA2526 AF3547ACBCF2D1BA 51EE6336878F31CE 6D048FAC15075F1B 60490B9B992BBB54 B0326B3E484B2A62 E514E782FDC00CE9 7597C9A206E63B1E 1383A0006FA67674 F54BFC435868E5F7 C48E341C2B040DA9 37CA1C56EE81076A C526B03D1B54DCE9 32DEA4226AE7D7FB ADA1BA19AF617D95 D7BDCEDC8EF9CFD5 4942071E75D71FE1 A1A88EBBF2BAF0E2 A7DEC45E4CB0E1EF E596CA5ECD08F5CF AAF86AB21D0F31D2 B357B166F194A020 1799FA6486E6C159 B56BA1537A856441 CE04BE5A7547ABC3 1D3AAEEB175879D0 D7D4123E9B1577F8 B8A4301BA049E1F9 C75E283FF958F4BC 648C45A29BD83467 391989246F8F9CA1 E862893F9E3EB87C EF9A5FCC12C9AC64 4C313912F2D7EB42 06301D4518F7B3B6 D2833A299A0A28F3 79BC274BDBA56B73 1DC195B9A6035DF0 A2782CE8EBFA9450 6F41F0E3D44BD62A EAD98162F5F75384 FFB4F6760C91E49E 752C1AD5CD401915 559319AE3F5D775C 45CDAFA847BE61F6 733EF26D7AAAC71E F32364FA8421BF2F 94507C5AB109535C 9B5B6F930DDC4327 BBE130B25AB5820E 178FE2477FEAA5E2 467FA1357361D6C5 0841B341122BE5F7 98DBD204C02BFF5E FC8DC7397208557C F677EE1AA2EC0F49 28E8A13ADFDA3F85 75FEA94E45FE8123 C25A8D7C750DC3D5 77E47DA5C3EC0310 86C80186C6F1C34F 9985F93ED8D0F062 C4FDC608DF711085 DF4C1556FE2A9CDD F33DEC67C14500ED 3A4B910378AFAACB DB2DCE570459D708 80A662A2AA2C2888 B3CF8A50BB0F0954 DEB75BE2F020FC8A A6BF379A156BA843 E280B65C79B5681B 605D8E22545E08D0 7EC92E17778C0E0B DC6FB702D5138BD7 518F9C9E067EE916 C8CE9EF596BE79D6 BC03FEF96217BEB5 D503776F91505CA7 BC00BAB5BEB7C1A6 8490C6F2EE0F63B5 CBE0D49B91BD75A8 EA5A64715FCECCE6 1313E6A8C4BFACB5 A7C658EDF24DF974 233BB5D80A52B8B1 DCB518F1FB4A7D4B 72A58A2F75DBD182 6BEA1B93E8E7F937 F993AE1C34D775CF 44381CEC68BD9CA8 BC80AC686EB42BDA 6226DEE6CB378546 9CEDF6EE7EA7CDDE B9859D083CF4D812 C3780F7B6F71E5FE C686381EBCC11E8B 927E4B234DDF007A D9FC542C08397DDE B0BC0EA89057801E 327819A1162AC38F BDA8676AA9D9173F 8DDD265C99E5C263 BFF0AF00C72D1DDB 2B0CA03F62308D50 B7F86B1886E7D026 35E90025B1ED7EBD FE64DA85A0132F6E CBFCEEA1E13D8243 C2B008D6D14DC095 6ACBD101547E8786 33B880963621BE21 E0F5D66856A2F762 74CCC1A410FB8D95 A1478DB9C05373C8 51745F6EE61E2CD5 9BAD23C01CDE4654 226DBEC295A27AE9 EAC7AFE7BF03862C 9F0B684FBFBD2505 740C9CBA7749CE8B 941C690936623A02 E6AEEA5809D34221 51FAB97ABB677816 E27FCA60AB883E17 52C8DA7E8A7A2915 BCEF7C73541C6381 2C1B474F649BF07F 59C23951199CE9C3 4C2658A2429B030A B154559F2B1FFB42 C0DD811786C018D5 42A9D3A82C4C35A2 7E9B876E566CF294 294ED72450ACED24 D861CDC80D7A83EF EBCD9E1C7D435EA0 5A19F104FAB93A80 6CE86F32B499CF48 506474B3901ACD1E C50F7C3F6197582B CC9FA8A4F786DC7A 97188D1694EBE217 30145B608E2FFCF3 A9FCCC9C24DE9646 4843B68F1A7F4847
  • Read the ciphertext. Strip whitespace: 4,112 hex characters = 2,056 bytes = 257 8-byte 3DES blocks.
  • Derive the key. Password = A858DE45F56D9BC9201212292200 (name+title). Key = MD5(password) = 82b1e4d063bf0c1f9f09aea5bea6c21a, used as a two-key 3DES key.
  • Decrypt. 3DES-EDE2 in ECB mode, then strip the PKCS7 padding. The plaintext is 64 GUIDs as hex (shown below).

Decrypted: GUID list

  1 20c9e640-8b0f-528a-a313-e57004e965d7
  2 c2354d04-7b89-2243-ac05-15ce4f643f80
  3 c1918acd-18ee-634b-9598-fb766ae27628
  4 bf5c8ae3-78f9-5308-964e-1fdd6b66c340
  5 ac9e97d2-7bbe-22cb-b6c5-7e12476ed5b6
  6 b10482e5-be1e-3917-8451-150c2fff9b5c
  7 4a42e4c4-6aaa-3d97-8dc3-b9e289e364d5
  8 43906c00-a8cb-1c4a-8e4c-0ea09ecce0c2
  9 03f917f4-0d5e-3264-b86e-eef0f51c0c1e
 10 69a9a11f-e8ea-7085-9b50-388de8c629ed
 11 3aa25e3c-d7b3-7bb3-8df6-4288649f8e94
 12 373504a2-591c-10d5-9f08-86b07c60a00d
 13 3a74d4b7-5669-1302-b5a1-f99216a0e9fc
 14 42e90ff2-9efd-630f-872c-53b059ffd014
 15 21d3163f-4b24-57e1-b02c-b7a881fbaebb
 16 06bb6387-903a-42e3-97e1-e313ea903b32
 17 d3af16e2-7d37-183c-8617-1b51508b7fe4
 18 e3439235-9a75-1601-b797-1e3022689555
 19 8e77cc8e-8e4a-467b-b14c-4ef5170ca8ff
 20 8af234d0-0971-3420-b032-aaee4e3d476e
 21 8537cf57-b1db-80a4-a9fd-13d3370b3764
 22 15ddd5bd-64ee-1ff4-b4b7-aa08f353e399
 23 61c64c1f-0ea9-4668-aa81-130ce71aacec
 24 af865700-9907-353f-800e-3158fafba969
 25 d6ce9317-f488-3b08-aeb0-0123dca4729a
 26 f264dda3-d404-66f2-bd81-71ee773df75c
 27 50aae86f-306e-323f-8cd4-334ac7651394
 28 b61b8e67-f79d-54e5-b334-8a2c2f6c5173
 29 ecf4c1f8-aa11-4352-9484-97827d37ee78
 30 4710bc36-04d3-74c3-aa57-cab5e07faa02
 31 6c41e560-99af-04ca-b14d-467abb97d9e2
 32 ba9cc507-d27b-020c-80e2-67d67f845e14
 33 1b84d9c1-d22d-2fad-917b-7ca5a6cf23c6
 34 1d47eb39-ac2d-2cb8-835e-0d6156067b7f
 35 dd66a901-0338-88b8-a237-f7bfb629e60b
 36 c961db0d-e3a6-3473-9293-ddffe141b761
 37 a2f46833-c5aa-408f-b7cd-a188c8a844aa
 38 749924c0-80d5-5b01-b3e4-fffbc7b702ea
 39 70a52707-9e82-451c-aa49-d131a71ff006
 40 a7ab33ac-5c3f-06b9-bfd7-aad876bebad8
 41 d570ff0c-7cab-69ef-97ca-52722edcc021
 42 d67f1e1c-0165-7aab-befb-d24825d946d9
 43 4e98ec93-5f9a-3e74-b87a-7890c2f4a354
 44 da8a9d70-13de-8473-b635-c420d7104313
 45 a3ac1815-be69-2bbd-b417-04f996c0fce4
 46 5d3adc4f-699c-44b1-9759-9f98261379ce
 47 08b3e476-d704-0535-96c3-f865a6cbda0f
 48 07c45fcd-9406-84ea-9aa0-a5e5e87d30b0
 49 554b8048-8213-50f5-8c5f-feb53b0e9e62
 50 460fd228-493f-79c5-bbd8-cbb9bbac50e1
 51 3c51c94a-631b-349d-bfe2-98203a9b99d8
 52 4c8ffdf8-0e3a-1306-9139-2449b2bae957
 53 a4911b49-2422-73a8-a52d-3118e7d47df0
 54 08e33071-8fee-3cff-ab9f-e0937923f2be
 55 84082cd5-d6ee-5bfc-bd2b-db33a2e0a50a
 56 e5765b8e-2ef0-3281-87d3-99749784f7f8
 57 693bcfa3-3ecb-61a6-a403-b5e29e2910ff
 58 f2e799c6-a27a-203c-91ae-8ed4622e3b7e
 59 f20bd7b7-f18c-2699-9e0f-b286f17d3012
 60 7c9b2978-8f16-4d02-92dd-9efb7abe3dbd
 61 0e37a5e7-79bc-8005-948b-700c2cd2bdd8
 62 383b9b13-d60a-7065-bbbf-e6304b8c3e18
 63 df220f11-062a-6427-babb-738b95056e50
 64 18047de9-c018-5779-acfb-1b89fef58332

Explanation

  1. Explain the mask digits. The version nibble (13th hex digit) of each GUID, read in order, gives 5265233137711654114381433635470022834540673824085731735362248765. Exactly this sequence comes out of new Random(731).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.
  2. Explain the count. Part of Fixed N=64 (Dec 2012 - Jan 2013): an app start that posted N = 64 every time.
  3. Conclusion. Filler. The content is fully explained by the two RNGs.

Related

Findings: Mask digit · Count RNG & runs