Mission 0x12

🔎 Solution

After connecting to the target via SSH as user lucy, the next objective is to extract the password hidden in a specific pattern inside the system. According to the mission file, the string for the next user (elena) is located between the characters fu and ck.

lucy@venus:~$ cat mission.txt 
################
# MISSION 0x12 #
################

## EN ##
The password of the user elena is between the characters fu and ck 

To search for this pattern efficiently, I used grep with a regex expression matching anything between fu and ck:

lucy@venus:~$ cat file.yo | grep "fu.*ck"
fu4xZ5lIKYmfPLg9tck

The substring between fu and ck reveals the password:

4xZ5lIKYmfPLg9t

With the extracted password, I logged into the next account:

ssh elena@venus.hackmyvm.eu -p 5000

Once inside, I checked the home directory and found the flag:

elena@venus:~$ cat flagz.txt 
8===st1pTdqEQ0bvrJfWGwLA===D~~

🚩Flag

8===st1pTdqEQ0bvrJfWGwLA===D~~