TJCTF2020 - Circles

Posted on mar. 02 juin 2020 in CTF

solves : 261

Points: 10

Written by jpes707

Some typefaces are mysterious, like this one - its origins are an enigma wrapped within a riddle, indeed.

Hint: To obtain the flag, you should find the font that was used to encode the message in the picture. If you Google the description of the problem, the first website that pops up seems promising. Using a dictionary to guess/bruteforce words without finding the font will not help you. Each circle in the image represents an alphanumeric character that is part of the flag. The brackets and the underscore in the image are NOT part of the font used to encrypt the flag.  

We have a picture with circles.


We know its from a specif font. After some searchs, we found the name: USF Circular Designs.

We can use this website to preview all letters and numbers (ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789) and make the correspondences:

We decode the image and got the flag: tjctf{B3auT1ful_f0Nt}.