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An old USB stick turns up in the MetroRide lost-and-found office. It holds one text file, and the file holds one line of strange text. It is hexadecimal: every two characters stand for one byte, and each byte is a letter.
The line is below, inside the code block. Convert it back to text. What you get is the inside of a flag. Wrap it in the flag format: the letters M X C, an opening curly brace, your decoded text, and a closing curly brace. Then paste it into the Submit box.
The Researcher Toolkit has a hex decoder. In CyberChef, the recipe is called From Hex. Either way, the bytes turn back into readable words.
This is how data really looks on the wire. Hex is everywhere in security work, so this is a good one to learn early.
68 65 78 5f 73 70 65 61 6b 73 5f 61 73 63 69 69 5f 30 6c 71 69
This challenge only. All names, addresses and data are fictional. Do not test any real system.
Stuck? Open hints in order: a nudge, then the next step, then an explicit pointer. Costs are taken from this solve's points.
Sign in to open hints.
Sign in to submit a flag.
Sign in, then solve this challenge or give up on it to read write-ups.