Mission 0x40

🔎 Solution

After connecting via SSH as adela, the next objective pointed toward something that could be "listened to":

adela@venus:~$ cat mission.txt 
################
# MISSION 0x40 #
################

## EN ##
User sky has saved her password to something that can be listened to.

In the directory, a file named wtf seemed like the obvious lead. Opening it revealed a familiar pattern-Morse code:

adela@venus:~$ cat wtf 
.--. .- .--. .- .--. .- .-. .- -.. .. ... .

Decoding the sequence produced the plaintext password:

papaparadise

With that, the next login was possible:

ssh sky@venus.hackmyvm.eu -p 5000

Inside the home directory, the final file contained the flag:

sky@venus:~$ cat flagz.txt 
8===8T2IE4fNIvbs8sh1lnew===D~~

🚩Flag

8===8T2IE4fNIvbs8sh1lnew===D~~