IceCTF 2018 - Drumbone

icectf, steganography

150 Points

We received an image named drumbone.png and the challenge description was:

I joined a couple of hacking channels on IRC and I started receiving these strange messages. Someone sent me this image. Can you figure out if there’s anything suspicious hidden in it?

Using stegsolve we are able to see an image that resembles a QR code in blue plane 0.

We clean up the image and fill in the missing bits to complete the QR code.

Use a QR code scanner and we will get the flag!