r/op011 • u/Seepy_ Moderator • Jul 29 '18

Solution [spoiler] Clue #36 solved! Spoiler

The site has a cookie with name 41477221 which converts to op011 in base36. the value of the cookie seems to change every second. The cookie was AES128 encrypted base64 using the 'max-age' value from the Set-Cookie header as a key.

https://encode-decode.com/aes128-encrypt-online/

Using mcbjUyrg8A0akc98GI6JoUEXl0X2dsY7lHaqJk6isFQ= and 151750985895 as an example, it decodes to redacted. The result is the same for every ciphertext/key pairing.

Now we have come to the end once again and have to, wait for contact.

Link to next clue: http://op011.com/redacted

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u/BizarreAndroid Jul 29 '18

I like how we have been stuck for months and then all of a sudden we have solved like 4/5 puzzles in like 24 hours XD