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        riddles >> hard >> Re: .JPG riddle
        
(Message started by: Aryabhatta on Jan 18^th, 2008, 12:21pm)

Title: Re: .JPG riddle
Post by Aryabhatta on Jan 18^th, 2008, 12:21pm

If the answer is [hide] bananas [/hide] this should be in easy :P

Title: Re: .JPG riddle
Post by SMQ on Jan 18^th, 2008, 12:36pm

While there's no objection to progressive riddles, we generally don't much go for "email me the answer" around here -- it's a discussion board after all. Also, I have my doubts about this belonging in Hard -- either medium or CS is probably more appropriate.

As to the puzzle itself, JPEG files normally end with the two bytes FF D9 -- the JPEG EOI (end of image) marker; however, in this file there are 91 bytes of data following the EOI:

[hide]0878: 52 61 72 21 1A 07 00 CF 90 73 00 00 0D 00 00 00 | Rar! s 0888: 00 00 00 00 C9 B2 74 20 90 39 00 07 00 00 00 07 | t 9 0898: 00 00 00 02 D1 A2 6B DF A3 9E 32 38 1D 30 14 00 | k 28 0 08A8: 20 00 00 00 54 68 65 20 61 6E 73 77 65 72 20 69 | The answer i 08B8: 73 2E 2E 2E 2E 74 78 74 00 B0 A0 25 26 42 61 6E | s....txt %&Ban 08C8: 61 6E 61 73 C4 3D 7B 00 40 07 00 | anas ={ @ [/hide]
So on first guess, I'd say: "[hide]The answer is Bananas[/hide]."

[edit] In fact, those 91 bytes are a very small RAR (http://en.wikipedia.org/wiki/RAR_(file_format)) file. WinZip won't open it, but let's see if I can make any progress by hand... [/edit]

[edit2] As I suspected, although there are a few bytes I can't account for, it's clearly a RAR archive containing a file named "[hide]The answer is....txt[/hide]" which file contains the uncompressed string "[hide]Bananas[/hide]" [/edit2]

--SMQ

Title: Re: .JPG riddle
Post by lantybunning on Jan 18^th, 2008, 12:51pm

Woah, i didn't realise people we that clever, o well

Title: Re: .JPG riddle
Post by FiBsTeR on Jan 20^th, 2008, 4:25pm

Sorry to bring this back up, but what was the original problem here? Was there an attachment?

Title: Re: .JPG riddle
Post by towr on Jan 21^st, 2008, 2:01am

I would assume there had been a jpg-attachment (or link).

Considering the cruel decapitation of this thread, perhaps it's best if I delete it in a day or two.

Title: Re: .JPG riddle
Post by SMQ on Jan 21^st, 2008, 6:32am

If you'd prefer to recreate it through editing, I have attached the original file to this post...

--SMQ