Capture The Flag [PART-1] – Beginner Kali Linux Challenges

Overview

This repository contains a collection of beginner-friendly CTF challenges designed to teach essential Linux and command-line skills using Kali Linux. Players will navigate folders, manipulate files, understand permissions, and solve basic command-line puzzles to find hidden flags.

Each challenge is self-contained, and the player works in a sandboxed environment to ensure safe learning.

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Objectives

• Learn and master basic Linux commands: ls, cd, pwd, cat, whoami, cp, mv, rm, mkdir, find, grep
• Understand file permissions and how to use chmod to fix restricted files
• Explore hidden files and folders
• Decode simple encoded flags and practice using the terminal for problem-solving
• Develop logical thinking and step-by-step investigation skills

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Challenge Table

#	Challenge	Type	Difficulty
1	1.ls	Command	Beginner
2	2.cd	Command	Beginner
3	3.pwd	Command	Beginner
4	4.cat	Command	Beginner
5	5.whoami	Command	Beginner
6	6.cp	Command	Beginner
7	7.mv	Command	Beginner
8	8.rm	Command	Beginner
9	9.mkdir	Command	Beginner
10	find	Command	Beginner
11	grep	Command	Beginner
12	Pe3miss1on	Permissions	Beginner
13	DEcrypt	Crypto	Beginner
14	EcH0System	Command	Beginner
15	H1dd2nGH0ST	Hidden Files	Beginner
16	Ra1nF0resT	Misc	Beginner
17	Secre1Flag	Misc	Beginner
18	Time1sToLess	Command	Beginner
19	ToP3erVices	Command	Beginner

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How to Play

1. Clone the repository:

git clone https://github.com/Aabidak/CaptureTheFlag.git
unzip CaptureTheFlag.zip
cd CaptureTheFlag
chmod +x Setup.sh
sudo ./Setup.sh 

Enter your nickname when prompted. A new Linux user account will be created, and a personal copy of the challenges will be placed in their home directory.

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Complete challenges by navigating folders, using commands, and solving puzzles to reveal the hidden flags.

Session Isolation:

After exiting your su session, the challenge folder remains locked and can only be accessed by logging back in with your nickname.

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Submit flags and track your progress on the official scoreboard:

[https://aabidak.github.io/CTF-scoreboard/]

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Learning Outcomes

-Command-line proficiency -File and folder manipulation -Understanding of Linux permissions -Problem-solving in a terminal environment -Safe, beginner-friendly introduction to CTFs

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License

This project is for educational purposes only. Feel free to modify and distribute challenges for teaching and learning.

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PART-2 will be uploaded soon

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IF YOU FACE ANY ISSUES OR BUGS MAIL ME HERE

msmdnayeem@gmail.com with title CaptureTheFlag

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