How I got 2nd place in my first CTF ever — DEFCON 27 Biohacking Village CTF Write-up

Introduction This is a write-up of some of the challenges at the DEFCON 27 Biohacking Village CTF. I didn’t plan on joining a CTF, but I ended up getting sucked in and spending the next 2 days on it. The instant gratification of ranking on the scoreboard offered a better rush than any Las Vegas casino game.
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I hacked my parents, my neighbor, and my school too at age 12 — my first hack

This is the story of my first hack, more than a decade ago. Back then, I was around 12, and I was living with my parents who had a strict one-hour-per-week rule for the Internet. I used to batch-download everything I wanted to read, and make a text file of all the links I wanted to read next week.
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up: easily traverse directories in CLI

I enjoy cding around when tinkering, but I often get tired of cd ../../… This tool lets you quickly go up a directory structure by specifying either the distance or a parent directory name. Although utterly trivial, I’ve been using for more than 10 years
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