Here's a picture of my favorite vegetable. I hope it doesn't make you cry.
After a lot of experimenting, we find out we can uncover a hidden message from the image using steghide:
$ steghide extract -sf rabbithole.jpg
Enter passphrase: <onion>
wrote extracted data to "address.txt".
whoo! contents of the file `address.txt` is:
might be an `.onion` link? Opening `http://wsqxiyhn23zdi6ia.onion` with a tor browser (or via https://onion.link/) gives:
We find nothing in the images, but after some hints we find that the chinese characters are [base65536](https://github.com/Parkayun/base65536)
# pip install base65536
with open('rabbithole_characters.txt','r') as f:
ct = f.readline().rstrip().replace(' ','')
with open('rabbithole_out','wb') as f2:
which turns out to be an epub on cell phone hacking. Searching the contents for the flag gives it to us