LIVE · School 21 CTF · 13 Nov 2026

FIELD MANUAL

A fast, searchable cheatsheet for Jeopardy CTF, Linux & the Kali toolkit. Recognize the challenge. Find the command. Submit the flag.

150 attack patterns/ 300 tools/ 270 commands/ 16 sections

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first-moves — run on ANY unknown file

# identify the REAL type (ignore the extension)
$ file challenge.*
# printable strings — flags & hints hide here
$ strings -n 8 challenge | less
# carve embedded / appended files out of it
$ binwalk -e challenge
# metadata: GPS, author, comments
$ exiftool challenge
# header / magic bytes
$ xxd challenge | head
# flag format is usually school21{…} / flag{…} / CTF{…}
# ALWAYS read the challenge text literally — the hint is in the wording

∅

No matches. Try a tool name, a flag, or a technique — like sqli, pcap, or chmod.