Category

Cryptography

Description

I have a good friend named Em. She loves secret codes, so when she challenged me this time, I was well up for it! She told me that she encoded the word “happy” as “56ab24c15b72a457069c5ea42fcfc640” and “sad” as “49f0bad299687c62334182178bfd75d8” (without the quotes) and challenged me to encode “mhsctf” using her method! I can’t figure it out! What would it be? Enter your answer in flag format: “flag{…}”

Solution

Both of the example hashes are MD5 hashes. Generating the MD5 hash for mhsctf we get fc3e3c405a66f8fe7cb7f17a838ea88c.

flag{fc3e3c405a66f8fe7cb7f17a838ea88c}