Houseplant CTF: Crypto Challenges

Broken Yolks

This challenge has a hint in the question only:- “scramble it now”.

ciphertext:- smdrcboirlreaefd
Upon scrambling it, we get:- scrambledorfried
So the flag is:- rtcp{scrambled_or_fried}

CH3COOH

For this challenge, we have given a large ciphertext with the title CH3COOH. CH3COOH is the chemical formula for vinegar. And vinegar sounds like vigenere cipher. Also, we don’t have the key for it. So, we will brute force the key online.
For this I’ll use this website.

So the flag is rtcp{vinegar_on_my_fish_and_chips_please} and the key is tony.

…. .- .-.. ..-.

The name of the challenge is:- …. .- .-.. ..-.
By seeing the dit and dah,the first hint goes towards the morse code.
When we morse decode it,we get the plain text:- “half”.
It indicates that it’s a half or fractionated morse code.

Ciphertext:
DXKGMXEWNWGPJTCNVSHOBGASBTCBHPQFAOESCNODGWTNTCKY

So we’ll try to decode it by fractionated morse code using this website.

Fractionated Morse cipher

So the flag is :- RTCPTW0GALLONSOFH4LFMAK3WH0LEM1LK

I’ll be writing up for others challenges as well very soon. Thanks everyone.