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an unsolved puzzle from yosmas past: https://forums.somethingawful.com/showthread.php?threadid=3795578&pagenumber=24&perpage=40#post467501521 so as part of the yosmas present to ahmeni i sent him a lockbox to open, and inside it, amongst actual presents, was this: alongside a usb drive with a combination lock: much like the locks i didn't try to make this complex or particularly challenging (considering the thread would dive on it as well it would have required ahmeni though) code:
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# ? Sep 18, 2017 16:04 |
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# ? Jun 10, 2024 12:42 |
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that's a really cool present ahmeni explain yourself
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# ? Sep 18, 2017 16:27 |
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that code spells out "use an angle grinder"
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# ? Sep 18, 2017 16:29 |
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BangersInMyKnickers posted:that code spells out "use an angle grinder" I think it spells "Nice call-out thread!"?
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# ? Sep 18, 2017 16:29 |
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After all that torment I hope they have a sacrificial laptop to test it on, the stick is most likely a USB killer/zapper
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# ? Sep 18, 2017 17:01 |
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the contents of the usb drive are irrelevant, i didn't put a puzzle on there because that's too many layers deep for a present
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# ? Sep 18, 2017 17:12 |
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these always come down to knowledge of techniques rather than super cool insight it seems like its broken into 2-digit pieces based on the pattern in writing code:
LOADING HACKER TOOLS (EXCEL 2010) code:
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# ? Sep 18, 2017 17:28 |
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analysis would be a good idea, but you're going in the wrong direction
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# ? Sep 18, 2017 17:37 |
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let me make that post more helpful, rather than jump to frequency analysis and try force a substitution cipher solution out: just use it on its own to get an idea of composition of the ciphertext and reason out how much information could be hidden given the size of data. it's a fair assumption that information is being passed from one person to another, but are there any unusual patterns or things that don't look quite right for ciphers you are familiar with?
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# ? Sep 18, 2017 18:04 |
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Wiggly Wayne DDS posted:let me make that post more helpful, rather than jump to frequency analysis and try force a substitution cipher solution out: just use it on its own to get an idea of composition of the ciphertext and reason out how much information could be hidden given the size of data. it's a fair assumption that information is being passed from one person to another, but are there any unusual patterns or things that don't look quite right for ciphers you are familiar with? ive actually never gotten any of these right nor know anything beyond what i just did only figured it could be transposed base 36+punctuation based on letter count (there's 38 unique 2-digit codes) and thats all i got
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# ? Sep 18, 2017 18:05 |
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Wiggly Wayne DDS posted:are there any unusual patterns or things that don't look quite right yeah i don't see any 69s or 420s what gives
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# ? Sep 18, 2017 18:11 |
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COACHS SPORT BAR posted:yeah i don't see any 69s or 420s what gives 89 appears four times, and three of those are in the same column. based on the hand-written part i'd say there's something up with lines 6 and 7, like they wrote that part that ends in 89 first, or that the part that ends in 89 is one piece of the puzzle. i don't know anything about cryptography though anthonypants fucked around with this message at 18:46 on Sep 18, 2017 |
# ? Sep 18, 2017 18:43 |
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COACHS SPORT BAR posted:yeah i don't see any 69s or 420s what gives
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# ? Sep 18, 2017 19:38 |
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Wiggly Wayne DDS posted:the last four digits are 6902 well poo poo
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# ? Sep 18, 2017 19:59 |
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zero is really frequent, and the pairing post above does look like a patterncode:
code:
also the values are often in the ascii range so maybe it's a shift/xor (actually doubtful nvm it probably represents the alphabet or a table somehow, then we map "yospos" onto it and get 5 numbers out of it) Daman fucked around with this message at 21:30 on Sep 18, 2017 |
# ? Sep 18, 2017 21:22 |
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They look like hex bytes to me but not all bytes are in the right range. Also I tried a shift (full ascii) but that doesn't seem to work
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# ? Sep 18, 2017 21:36 |
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hmm, it says "be sure to drink your ovaltine"
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# ? Sep 18, 2017 21:57 |
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so there's unigram and bigram frequency analysis, any other traits to look for?
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# ? Sep 18, 2017 22:06 |
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if someone has any links to a pre crypto 101 course so i can learn how to unravel the mysteries of rot13 i would appreciate w
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# ? Sep 18, 2017 22:24 |
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i'm just spitballing, but i'm betting the words merry yosmas, yospos bitch, and the 5 numbers for the lock are all there.
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# ? Sep 18, 2017 22:47 |
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https://forums.somethingawful.com/showthread.php?threadid=3834677 here's another one to take a crack at too
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# ? Sep 18, 2017 22:57 |
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split into 5-digit chunks (5 wheels on the lock) first digit of each is always in {0,1,2}
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# ? Sep 19, 2017 01:07 |
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12345
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# ? Sep 19, 2017 01:14 |
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i dont know op
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# ? Sep 19, 2017 01:17 |
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Rufus Ping posted:split into 5-digit chunks (5 wheels on the lock) split into 5-digit chunks and transposed for clarity pre:01012022011022010000102110202100 - only {0,1,2} 26955822833393767616582118152686 - no 0s or 4s 43616962955026121183294979906349 - all digits present 10021200200010000110220213300110 - only {0,1,2,3} 27191213046464864004064553075852 - all digits present Rufus Ping fucked around with this message at 01:52 on Sep 19, 2017 |
# ? Sep 19, 2017 01:39 |
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Wiggly Wayne DDS posted:just use it on its own to get an idea of composition of the ciphertext and reason out how much information could be hidden given the size of data 160 decimal digits = ~66 bytes but theres obviously some inefficient coding going on, so less
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# ? Sep 19, 2017 01:43 |
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use brute force, it's the american way just put tension on the lock by pulling on the strap and rotate each wheel until you feel something dragging against a gate, i bet it doesn't have that great tolerances so it should be easy to do and then we can work backwards from the solution
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# ? Sep 19, 2017 06:09 |
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op got owned by sick australian filth
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# ? Sep 19, 2017 06:40 |
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Rufus Ping posted:split into 5-digit chunks and transposed for clarity code:
code:
Wiggly Wayne DDS fucked around with this message at 08:47 on Sep 19, 2017 |
# ? Sep 19, 2017 07:52 |
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code:
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# ? Sep 19, 2017 19:11 |
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there's a bunch of values that are very close to eachother, which makes me think position isn't part of the encoding (since they occur far apart). here's the list sorted to make them obviouscode:
code:
code:
code:
Daman fucked around with this message at 19:46 on Sep 19, 2017 |
# ? Sep 19, 2017 19:32 |
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i did say this would require ahmeni
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# ? Sep 19, 2017 19:36 |
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Wiggly Wayne DDS posted:i did say this would require ahmeni the irn bru still remains in my cupboard and not even my scottish friend will take it
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# ? Sep 19, 2017 23:24 |
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also whats up YOSPOS I haven't posted in 9 months
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# ? Sep 19, 2017 23:26 |
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Wiggly Wayne DDS posted:i did say this would require ahmeni you forgot the #include
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# ? Sep 19, 2017 23:58 |
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ahmeni posted:also whats up YOSPOS I haven't posted in 9 months
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# ? Sep 20, 2017 00:02 |
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did you get any books. could be a one time pad where digit(s) correspond to book number / chapter number / page number / paragraph etc
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# ? Sep 20, 2017 02:11 |
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Rufus Ping posted:did you get any books. could be a one time pad where digit(s) correspond to book number / chapter number / page number / paragraph etc I could go for the first three digits of each group being a page number, The Joy of Linux is 368 pages, so 292 being the highest would allow for stuff like prefaces
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# ? Sep 20, 2017 02:33 |
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The last two being the word number is also plausible
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# ? Sep 20, 2017 02:39 |
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# ? Jun 10, 2024 12:42 |
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Wiggly Wayne DDS posted:welcome back i hope you still have your presents I do! my youngest was quite fond of the puzzle though so it might take a bit to unearth
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# ? Sep 20, 2017 03:28 |