Challenge 7: Magikarp Ground Mission

Description

Do you know how to move between directories and read files in the shell? Start the container, ssh to it, and then ls once connected to begin. Login via ssh as ctf-player with the password, a13b7f9d

Tags

picoCTF 2021 General Skills

Points

30

Solution

We need to connect to the server using ssh. We need to lunch the instance first. after that, we can connect to the server using the following command:

ssh ctf-player@venus.picoctf.net -p 57496

when we connect to the server, after we run the ls command, we will get the following message:

$ ls

1of3.flag.txt  instructions-to-2of3.txt

we can see that there is a file called 1of3.flag.txt. we can read the file using the cat command:

$ cat 1of3.flag.txt

picoCTF{xxsh_

if we cat the instructions-to-2of3.txt file, we will get the following message:

$ cat instructions-to-2of3.txt

Next, go to the root of all things, more succinctly `/`

we can see that we need to go to the root directory. we can do this by running the following command:

cd /

after we run the ls command, we will get the following message:

$ ls

2of3.flag.txt  boot  etc   instructions-to-3of3.txt  lib64  mnt  proc  run   srv  tmp  var
bin            dev   home  lib                       media  opt  root  sbin  sys  usr

we can see that there is a file called 2of3.flag.txt. we can read the file using the cat command:

$ cat 2of3.flag.txt

0ut_0f_\/\/4t3r_

if we cat the instructions-to-3of3.txt file, we will get the following message:

$ cat instructions-to-3of3.txt

Lastly, ctf-player, go home... more succinctly `~`

we can see that we need to go to the home directory. we can do this by running the following command:

cd ~

after we run the ls command, we will get the following message:

$ ls

3of3.flag.txt drop-in

we can see that there is a file called 3of3.flag.txt. we can read the file using the cat command:

$ cat 3of3.flag.txt

71be5264}

as we can see, we got the flag.

Flag

picoCTF{xxsh_0ut_0f_\/\/4t3r_71be5264}