Oneliner:
This is a morse code full of junk character. Remove them, replace '.' with 0 and '-' with 1. You have the binary solve it. Try different combination of 8byte
Understanding:
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first of all it's totall look alike morse code. Even the author claim it just by what? is this supposed to be a morsecode?. Oviously once in its lifetime :3
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The second important part is the Challange Name, Junky message So lots of junk here.
Analysis:
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First I search for junk cipher. Is there any kind of junk cipher exist that I dont know about? Nope! There is nothing called junk cipher
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So time to put the junk into a dustbin. I filter out only for '.' and '-' character and mitigate all others
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Try to solve it as a morsecode but nope! not helpful
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Then ask GPT what should we do? can we replace '.' with 0 and '-' with 1 then check for any ASCII value? Try other combination too like '.' with 1 and '-' with 0 and do the same
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The result is disturbing. Then I assume,(seriously totally guessing) find offset and brute force until you get a ascii printable strings
HOLA IT SOLVED... I know sometimes guessing games is frustrating. But it become handy when you failed and learn. So yeah I face this kind of things long ago, And oviously I failed.