I've definitely used one or two in the last 6 months

For what kind of challenge? Most of these are not even available in CTF environments

	▲	mna_ 6 hours ago \| parent \| next [-]
		I've used them for pwncollege CTFs but pwncollege is way below your level (I've seen some of your write ups before).
	▲	5 hours ago \| parent \| prev [-]
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