Lab
A Cloud Guru

Creating a Chrooted Environment

This lab will allow you to practice creating a chrooted environment, adding access to Linux commands, along with including shared libraries for these commands. You will create a chrooted jailed environment as well as ensuring the inmates can `cat` out the false escape plans that you will leave behind.

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Path Info

Level

Beginner

Duration

30m

Published

Nov 14, 2018

Challenge

Create a directory named /home/elba
1. Once logged in to the server, become the root user using the command sudo su -. When prompted, enter the cloud_user password shown in the lab’s credentials section.
2. Create a directory for elba within the /home directory.
```
 mkdir /home/elba
```
Challenge

Create a new user called napoleon.
1. Create a new user for your environment named napoleon.
```
 useradd napoleon
```
Challenge

Create the bin and lib64 directories in /home/elba
1. Create two new directories, bin and lib64, within the /home/elba directory.
```
 mkdir /home/elba/{bin,lib64}
```
Challenge

Copy /bin/bash into /home/elba/bin/bash.
1. Copy /bin/bash into /home/elba/bin/bash.
```
 cp /bin/bash /home/elba/bin/bash
```
Challenge

Copy /bin/ls in to /home/elba/bin/ls
1. Copy /usr/bin/ls into /home/elba/bin/ls.
```
 cp /bin/ls /home/elba/bin/ls
```
Challenge

Copy /bin/cat in to /home/elba/bin/cat
1. Copy /bin/cat into /home/elba/bin/cat.
```
 cp /bin/cat /home/elba/bin/cat
```

Challenge

Copy the libraries needed for bash, ls, and cat over to /home/elba/lib64.

Find and copy the libraries needed for bash, ls, and cat over to /home/elba/lib64.

	ldd /bin/bash /bin/ls /bin/cat

	cp /lib64/libtinfo.so.5  
	/lib64/libdl.so.2 
	/lib64/ld-linux-x86-64.so.2 
	/lib64/libselinux.so.1 
	/lib64/librt.so.1 
	/lib64/libcap.so.2 
	/lib64/libacl.so.1 
	/lib64/libc.so.6 
	/lib64/libpthread.so.0 
	/lib64/libattr.so.1 
	/lib64/libpcre.so.1  /home/elba/lib64

Challenge

Create the waterloo.txt file in the /home/elba directory
1. Using vi, create the waterloo.txt file in the /home/elba directory with instructions on how to escape.
```
 vi /home/elba/waterloo.txt
```
Challenge

Create a chrooted environment in /home/elba with a bash shell.
1. Using the chroot command, create a chrooted environment in /home/elba with a Bash shell.
```
 chroot /home/elba /bin/bash
```
Challenge

Confirm commands work.
1. Using the command pwd, confirm the present working directory and then confirm that you can use the ls command.
```
	pwd
```
```
	ls
```
```
	cat
```
Challenge

View the contents of waterloo.txt and find out how to escape your environment.
1. View the contents of waterloo.txt and find out how to escape your environment.
```
 cat waterloo.txt
```

Author

A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

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Follow along with the author’s guided walkthrough and build something new in your provided environment!

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Creating a Chrooted Environment

Path Info

Table of Contents

Create a directory named /home/elba

Create a new user called napoleon.

Create the bin and lib64 directories in /home/elba

Copy /bin/bash into /home/elba/bin/bash.

Copy /bin/ls in to /home/elba/bin/ls

Copy /bin/cat in to /home/elba/bin/cat

Copy the libraries needed for bash, ls, and cat over to /home/elba/lib64.

Create the waterloo.txt file in the /home/elba directory

Create a chrooted environment in /home/elba with a bash shell.

Confirm commands work.

View the contents of waterloo.txt and find out how to escape your environment.

What's a lab?

Provided environment for hands-on practice

Guided walkthrough

Did you know?

Start learning by doing today