Akash Trehan
Write-ups

Infosec Institute n00b Level 3

Decoding a QR code and then Morse code to reveal the flag.

By Akash Trehan · · 1 min read · 30 pts · Web
A QR code centered on a dark blue background
Infosec Institute n00b Level 3

Write-up

I saw two suspicious things on the page - a QR code and a 90% complete progress bar. I went to the source code and saw the progress bar was hardcoded to remain at 90% and hence it is just a distraction.

Then I read the QR code using an online utility. Search for QR Code decoder decoder on Google. You’ll find plenty of them. I used https://www.qr-codes.com/decoder

This is what I got.

Decoded QR

This surely looks like Morse Code. I used https://morsecode.scphillips.com/translator.html to convert this to ascii text. I got INFOSECFLAGISMORSING.

This gives away the flag.

Flag: infosec_flagis_morsing