Turn a hex dump back into a file
Someone pasted a file as an xxd hex dump into a chat log. Rebuild the original bytes with xxd -r, read the text, and submit the flag.
Briefing
The challenge is ~/challenge/dump.txt. Each line has an offset, sixteen bytes in hex, and an ASCII preview.
xxd -r reads that format and writes the original bytes. With -p it reads plain hex with no offsets.
ctf-box · CTF warm-ups
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