Course

In this challenge, you need to log in using the username `pentesterlab` and the password `pentesterlab`. The user `root` has left a backup of the `home` directory of users in a temporary directory, possibly `/tmp` or `/var/tmp`. Your task is to locate and extract the `backup.gzip` file and search for a file named `credentials.txt` which contains the password for the user `victim`.

Once you have the password, use the `su` command to become the user `victim` by running `su victim`. After successfully becoming `victim`, navigate to their home directory and search for the key to complete the challenge. Don't forget to clean up and remove any files you created during the decompression process.