Written by Michael Zhang
Writeup by Jester
Haaaalppp I can't pronounce this word. What could this image mean?
Look for clues in the file. The file appears corrupted, but maybe it still contains some important information.
First, to solve this problem, we need to find clues (notice the s). There are 2 clues needed to solve the problem.
We can obtain both clues quite easily. The first one is to simply open the picture as a rar file.
Inside the rar file, we find a file called sh58, which, if we open with notepad, contains the ciphertext 1e95153b6c941098227a4b08d9d74cb9d7b9387f83c74097.
To obtain the second clue, we must open the jpg with a hex editor (I used HxD). Then, Ctrl+F "flag", in which it says "here's a hint at the flag: tetraodontidae"
Given these two clues, we can now decrypt the ciphertext. A quick google of "tetraodontidae" reveals a type of encryption called "blowfish," which requires a key and ciphertext. Perfect! After using many different websites, the one that worked for me was http://webnet77.com/cgi-bin/helpers/blowfish.pl
Enter "tetraodontidae" as the key and "1e95153b6c941098227a4b08d9d74cb9d7b9387f83c74097" as the ciphertext, and you get the flag!
bl0w_fish_so_s3cret_