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NorthSec CTF 2021 Write Up: 'Impurity Assessment Form'
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NorthSec CTF 2021 Write Up: 'Impurity Assessment Form'

Akamai·Samuel Erb·about 1 month ago
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This is a write up of a  NorthSec 2021 CTF  problem I solved with  Allan Wirth (@Allan_Wirth)  as part of team SaaS which finished in 3rd. It was an extremely creative problem to solve so I wanted to share it here.  \r\n Notes: \r\n \r\n The strange name and prompt are medieval themed, as was the rest of the CTF.  \r\n \r\n The .ctf links below will not work as the CTF was run on a private network per-team. \r\n \r\n This was a "Jeopardy-style CTF" where each problem solved would earn a team points in the competition. \r\n \r\n \r\n Prompt \r\n "You know, my friend, we all have our ailings. I've had my fair share of scourges and infections, and the recent plague just shows that everybody can be an impure. \r\n The Herbal Purity folks have a form out there where people can submit what ails them. \r\n Can you make sure all of that is safe? I mean, I wouldn't want anybody to learn my little private secrets, if you know what I mean.…

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