CTF Day 51 | useless | Specialer | General Skills

1. useless

I used SSH to connect to the system remotely. The username and password are provided in the challenge.

ssh -p59573 picoplayer@saturn.picoctf.net

ssh -p59573 picoplayer@saturn.picoctf.net

Now, I listed all the files and folders using the ls command. I found a useless file. I opened that file.

At the end, it is mentioned to read the manual. To read the manual, I used the man command. The manual has the flag at the end.

2. Specialer

I connected to the Linux system using SSH with the login credentials.

As I logged in, I used some commands to list the files, but most of the commands were blocked.

I typed help, and it gave me a list of commands that are available in the terminal.

I used the cd and echo commands to find the flag.

First, I used the echo * command. It listed all the files and folders in the directory; then I used cd to navigate into the directory and used echo again to read the contents of the files.

As I opened the "kazam.txt" file in the "ala" directory, I got the flag.

Key takeaways:

🐧 Using SSH to remotely access a Linux-based CTF environment and work from the command line 📖 Using the man command to investigate documentation and discover hidden information 🚫 Understanding how restricted shells can limit available commands and require alternative approaches 🔎 Using help, echo, and cd to navigate the filesystem and access files when common commands were blocked

Small learnings every day will become an ocean one day.