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Re:GCHQ Code Cracking Challenge to recruit code breakers by jgrahamc on Thursday December 01, 2011 @06:21AM (#3299282)
Here's a handy typed in version of the image on the site:

Left hand side:

  eb04afc2 bfa381ec 0cfec175 f931c0ba d0c1ca08 8a1c0c8a
  fec175e8 e95c0000 005c583d 41414141 753b5a89 d189e689
  d189df29 cf31c031 8a14068a 341e8834 8a1c168a 1730da88 
  d8fec0cd 809090e8
Right hand side:

  00010000 31c9880c efbeadde 02040c00 3c04881c 04883c0c 
  0089e381 c3040000 7543583d 42424242 df29cff3 a489de89 
  db31d2fe c0021c06 0688141e 00f230f6 17474975 de31db89   
  9dffffff 41414141
There are lots of interesting features in this.

I should add, cryptically, that there's more to the challenge, I believe, than simply meets the eye.

  42424242 32000000 c291d8f1 6d70203a ab67c29a 0bc4c291 
  fbc7660f fccdccb4 02fad777 b45438ab 1f0ee38e d30deb99    
  c3c293fe d12b1b11 c611efc8 ca2f
Re:GCHQ Code Cracking Challenge to recruit code breakers by Donch on Thursday December 01, 2011 @11:04AM (#3300163)
If you're a bit stuck try pasting:

eb 04 af c2 bf a3 81 ec 0c fe c1 75 f9 31 c0 ba d0 c1 ca 08 8a 1c 0c 8a fe c1 75 e8 e9 5c 00 00 00 5c 58 3d 41 41 41 41 75 3b 5a 89 d1 89 e6 89 d1 89 df 29 cf 31 c0 31 8a 14 06 8a 34 1e 88 34 8a 1c 16 8a 17 30 da 88 d8 fe c0 cd 80 90 90 e8 00 01 00 00 31 c9 88 0c ef be ad de 02 04 0c 00 3c 04 88 1c 04 88 3c 0c 00 89 e3 81 c3 04 00 00 75 43 58 3d 42 42 42 42 df 29 cf f3 a4 89 de 89 db 31 d2 fe c0 02 1c 06 06 88 14 1e 00 f2 30 f6 17 47 49 75 de 31 db 89 9d ff ff ff 41 41 41 41

into either:

http://www.onlinedisassembler.com/

or

http://pyms86.appspot.com/desasm_hex

Re:GCHQ Code Cracking Challenge to recruit code breakers by james123 on Thursday December 01, 2011 @07:24PM (#3302106)
eb 04 af c2 bf a3 81 ec 00 01 00 00 31 c9 88 0c 0c fe c1 75 f9 31 c0 ba ef be ad de 02 04 0c 00 d0 c1 ca 08 8a 1c 0c 8a 3c 04 88 1c 04 88 3c 0c fe c1 75 e8 e9 5c 00 00 00 89 e3 81 c3 04 00 00 00 5c 58 3d 41 41 41 41 75 43 58 3d 42 42 42 42 75 3b 5a 89 d1 89 e6 89 df 29 cf f3 a4 89 de 89 d1 89 df 29 cf 31 c0 31 db 31 d2 fe c0 02 1c 06 8a 14 06 8a 34 1e 88 34 06 88 14 1e 00 f2 30 f6 8a 1c 16 8a 17 30 da 88 17 47 49 75 de 31 db 89 d8 fe c0 cd 80 90 90 e8 9d ff ff ff 41 41 41 41 42 42 42 42 32 00 00 00 91 D8 F1 6D 70 20 3A AB 67 9A 0B C4 91 FB C7 66 0F FC CD CC B4 02 FA D7 77 B4 54 38 AB 1F 0E E3 8E D3 0D EB 99 C3 93 FE D1 2B 1B 11 C6 11 EF C8 CA 2F
Re:GCHQ Code Cracking Challenge to recruit code breakers by tractor2011 on Friday December 02, 2011 @04:23PM (#3305743)
eb 04 af c2 bf a3 81 ec 00 01 00 00 31 c9 88 0c 0c fe c1 75 f9 31 c0 ba ef be ad de 02 04 0c 00 d0 c1 ca 08 8a 1c 0c 8a 3c 04 88 1c 04 88 3c 0c fe c1 75 e8 e9 5c 00 00 00 89 e3 81 c3 04 00 00 00 5c 58 3d 41 41 41 41 75 43 58 3d 42 42 42 42 75 3b 5a 89 d1 89 e6 89 df 29 cf f3 a4 89 de 89 d1 89 df 29 cf 31 c0 31 db 31 d2 fe c0 02 1c 06 8a 14 06 8a 34 1e 88 34 06 88 14 1e 00 f2 30 f6 8a 1c 16 8a 17 30 da 88 17 47 49 75 de 31 db 89 d8 fe c0 cd 80 90 90 e8 9d ff ff ff 41 41 41 41
Re:GCHQ Code Cracking Challenge to recruit code breakers by Ideal1 on Saturday December 10, 2011 @01:08PM (#3338048)
eb 04 af c2 bf a3 81 ec 0c fe c1 75 f9 31 c0 ba d0 c1 ca 08 8a 1c 0c 8a fe c1 75 e8 e9 5c 00 00 00 5c 58 3d 41 41 41 41 75 3b 5a 89 d1 89 e6 89 d1 89 df 29 cf 31 c0 31 8a 14 06 8a 34 1e 88 34 8a 1c 16 8a 17 30 da 88 d8 fe c0 cd 80 90 90 e8 00 01 00 00 31 c9 88 0c ef be ad de 02 04 0c 00 3c 04 88 1c 04 88 3c 0c 00 89 e3 81 c3 04 00 00 75 43 58 3d 42 42 42 42 df 29 cf f3 a4 89 de 89 db 31 d2 fe c0 02 1c 06 06 88 14 1e 00 f2 30 f6 17 47 49 75 de 31 db 89 9d ff ff ff 41 41 41 41
Re:GCHQ Code Cracking Challenge to recruit code breakers by cycleops on Monday December 05, 2011 @06:58PM (#3317116)
eb 04 af c2 bf a3 81 ec 0c fe c1 75 f9 31 c0 ba d0 c1 ca 08 8a 1c 0c 8a fe c1 75 e8 e9 5c 00 00 00 5c 58 3d 41 41 41 41 75 3b 5a 89 d1 89 e6 89 d1 89 df 29 cf 31 c0 31 8a 14 06 8a 34 1e 88 34 8a 1c 16 8a 17 30 da 88 d8 fe c0 cd 80 90 90 e8 00 01 00 00 31 c9 88 0c ef be ad de 02 04 0c 00 3c 04 88 1c 04 88 3c 0c 00 89 e3 81 c3 04 00 00 75 43 58 3d 42 42 42 42 df 29 cf f3 a4 89 de 89 db 31 d2 fe c0 02 1c 06 06 88 14 1e 00 f2 30 f6 17 47 49 75 de 31 db 89 9d ff ff ff 41 41 41 41
Re:GCHQ Code Cracking Challenge to recruit code breakers by halodebo on Sunday December 04, 2011 @03:05AM (#3310183)
eb 04 af c2 bf a3 81 ec 0c fe c1 75 f9 31 c0 ba d0 c1 ca 08 8a 1c 0c 8a fe c1 75 e8 e9 5c 00 00 00 5c 58 3d 41 41 41 41 75 3b 5a 89 d1 89 e6 89 d1 89 df 29 cf 31 c0 31 8a 14 06 8a 34 1e 88 34 8a 1c 16 8a 17 30 da 88 d8 fe c0 cd 80 90 90 e8 00 01 00 00 31 c9 88 0c ef be ad de 02 04 0c 00 3c 04 88 1c 04 88 3c 0c 00 89 e3 81 c3 04 00 00 75 43 58 3d 42 42 42 42 df 29 cf f3 a4 89 de 89 db 31 d2 fe c0 02 1c 06 06 88 14 1e 00 f2 30 f6 17 47 49 75 de 31 db 89 9d ff ff ff 41 41 41 41
Re:GCHQ Code Cracking Challenge to recruit code breakers by joaoneves on Friday December 02, 2011 @08:56AM (#3303942)
eb 04 af c2 bf a3 81 ec 0c fe c1 75 f9 31 c0 ba d0 c1 ca 08 8a 1c 0c 8a fe c1 75 e8 e9 5c 00 00 00 5c 58 3d 41 41 41 41 75 3b 5a 89 d1 89 e6 89 d1 89 df 29 cf 31 c0 31 8a 14 06 8a 34 1e 88 34 8a 1c 16 8a 17 30 da 88 d8 fe c0 cd 80 90 90 e8 00 01 00 00 31 c9 88 0c ef be ad de 02 04 0c 00 3c 04 88 1c 04 88 3c 0c 00 89 e3 81 c3 04 00 00 75 43 58 3d 42 42 42 42 df 29 cf f3 a4 89 de 89 db 31 d2 fe c0 02 1c 06 06 88 14 1e 00 f2 30 f6 17 47 49 75 de 31 db 89 9d ff ff ff 41 41 41 41
Re:GCHQ Code Cracking Challenge to recruit code breakers by mohhamad on Sunday December 04, 2011 @02:36AM (#3310142)
what is this ?
Re:GCHQ Code Cracking Challenge to recruit code breakers by halodebo on Sunday December 04, 2011 @03:04AM (#3310181)
Pasting ay. lol im going to be up all night
Re:GCHQ Code Cracking Challenge to recruit code breakers by puczynski on Thursday December 01, 2011 @08:15PM (#3302249)
58 3d 41 41 41 41
Re:GCHQ Code Cracking Challenge to recruit code breakers by tractor2011 on Friday December 02, 2011 @04:24PM (#3305747)
58 3d 41 41 41 41
Re:GCHQ Code Cracking Challenge to recruit code breakers by pbhjpbhj on Thursday December 01, 2011 @07:52AM (#3299530)
The repititions have me curious.

Do you, or anyone, happen to know of a cypher-text analysis tool that will allow for example to quickly workout distributions of substrings, perform simply replacements and the like?

I guess I could code such a thing but my coding is pretty rusty.

---

Edit: I found these but question is still open if someone has a good tool to suggest.

http://crypto.lkdev.com/fa.php http://www.richkni.co.uk/php/crypta/freq.php

Re:GCHQ Code Cracking Challenge to recruit code breakers by slug on Thursday December 01, 2011 @09:42PM (#3302441)
script to do it automagically, using tesseract:

http://git.aeminium.org/~slug/?p=programming/security.git;a=...

unsigned char image_com[] = { 0xeb, 0x04, 0xaf, 0xc2, 0xbf, 0xa3, 0x81, 0xec, 0x00, 0x01, 0x00, 0x00, 0x31, 0xc9, 0x88, 0x0c, 0x0c, 0xfe, 0xc1, 0x75, 0xf9, 0x31, 0xc0, 0xba, 0xef, 0xbe, 0xad, 0xde, 0x02, 0x04, 0x0c, 0x00, 0xd0, 0xc1, 0xca, 0x08, 0x8a, 0x1c, 0x0c, 0x8a, 0x3c, 0x04, 0x88, 0x1c, 0x04, 0x88, 0x3c, 0x0c, 0xfe, 0xc1, 0x75, 0xe8, 0xe9, 0x5c, 0x00, 0x00, 0x00, 0x89, 0xe3, 0x81, 0xc3, 0x04, 0x00, 0x00, 0x00, 0x5c, 0x58, 0x3d, 0x41, 0x41, 0x41, 0x41, 0x75, 0x43, 0x58, 0x3d, 0x42, 0x42, 0x42, 0x42, 0x75, 0x3b, 0x5a, 0x89, 0xd1, 0x89, 0x5c, 0x78, 0x24, 0x36, 0x89, 0xdf, 0x29, 0xcf, 0xf3, 0xa4, 0x89, 0xde, 0x89, 0xd1, 0x89, 0xdf, 0x29, 0xcf, 0x31, 0xc0, 0x31, 0xdb, 0x31, 0xd2, 0xfe, 0xc0, 0x02, 0x1c, 0x06, 0x8a, 0x14, 0x06, 0x8a, 0x34, 0x1e, 0x88, 0x34, 0x06, 0x88, 0x14, 0x1e, 0x00, 0xf2, 0x30, 0xf6, 0x8a, 0x1c, 0x16, 0x8a, 0x17, 0x30, 0xda, 0x88, 0x17, 0x47, 0x49, 0x75, 0xde, 0x31, 0xdb, 0x89, 0xd8, 0xfe, 0xc0, 0xcd, 0x80, 0x90, 0x90, 0xe8, 0x9d, 0xff, 0xff, 0xff, 0x41, 0x41, 0x41, 0x41, 0x42, 0x42, 0x42, 0x42, 0x32, 0x00, 0x00, 0x00, 0x91, 0xd8, 0xf1, 0x6d, 0x70, 0x20, 0x3a, 0xab, 0x67, 0x9a, 0x0b, 0xc4, 0x91, 0xfb, 0xc7, 0x66, 0x0f, 0xfc, 0xcd, 0xcc, 0xb4, 0x02, 0xfa, 0xd7, 0x77, 0xb4, 0x54, 0x38, 0xab, 0x1f, 0x0e, 0xe3, 0x8e, 0xd3, 0x0d, 0xeb, 0x99, 0xc3, 0x93, 0xfe, 0xd1, 0x2b, 0x1b, 0x11, 0xc6, 0x11, 0xef, 0xc8, 0xca, 0x2f }; unsigned int image_com_len = 221;