Challenge statement:

Examine the kitty.jpeg file to find the flag.

The kitty.jpeg looks like a very valid picture.

Since it is the first challenge of the warmup, we can start with a simple approach.

$ strings kitty.jpeg | grep -i nsec

Well… here’s our flag!
That went faster than expected.
I was going to try with other words like ctf and flag, but the competition name is a great start.

Another way to find it was to do the same using exiftool:

$ exiftool kitty.jpeg  | grep -i nsec
Camera Model Name               : nsec2022{kitcam2022}