Unzip the given folder to get two images ```abstract.png```and ```nautilus.jpg```. We find that ```abstract``` is esolang called ```piet```.
```https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwj7perXmNnzAhUnzjgGHTh2AlQQFnoECAYQAQ&url=https%3A%2F%2Fwww.bertnase.de%2Fnpiet%2Fnpiet-execute.php&usg=AOvVaw1M1edbKSqgcT3w1OIVDyOH```
Upload the Image here to execute the program. There we find that it executes fibonacci.
Use steghide on ```nautilus.jpg``` with passphrase ```fibonacci``` to get a binary output. 
Convert the binary to QR code and scan It for flag.
**Flag**```flag{p13t_70_qr_wh0_7h0ug7h!}```