Tags: steganography forensics
Running the `strings` command on the given file reveals the text `bobross63` which hints on some sort of encryption key.
One of the popular method to hide encrypted data inside an image is using `steghide`.
To put it together:
❯ steghide extract -sf fish.jpg
Enter passphrase: bobross63
the file "flag.txt" does already exist. overwrite ? (y/n) y
wrote extracted data to "flag.txt".
❯ cat flag.txt