PicoCTF19 The Numbers

Challenge

The numbers... what do they mean?

the_numbers.png

Hint

The flag is in the format PICOCTF{}

Solution

This looks like the Letter Number Cipher (known as A1Z26):

Use this to decode the message.

16 9 3 15 3 20 6 { 20 8 5 14 21 13 2 5 18 19 13 1 19 15 14 }

Flag

PICOCTF{THENUMBERSMASON}