Advanced Bash: Owning the System

Make a copy of this document to work in$,$ and then for each step, add the solution commands below the prompt. Save and submit this completed file as your Challenge deliverable.

Step $1$: Shadow People

Create a secret user named sysd$.$ Make sure this user doesn't have a home folder created.

$[$Your solution command here$]$

Give your secret user a password.

$[$Your solution command here$]$

Give your secret user a system UID $<1000.$

$[$Your solution command here$]$

Give your secret user the same GID.

$[$Your solution command here$]$

Give your secret user full sudo access without the need for a password.

$[$Your solution command here$]$

Test that sudo access works without your password.

$[$Your bash commands here$]$

Step $2$: Smooth Sailing

Edit the sshd$\_$config file.

$[$Your bash commands here$]$

Step $3$: Testing Your Configuration Update

Restart the SSH service.

$[$Your solution command here$]$

Exit the root account.

$[$Your solution command here$]$

SSH to the target machine using your sysd account and port $2222.$

$[$Your solution command here$]$

Use sudo to switch to the root user.

$[$Your solution command here$]$

Step $4$: Crack All the Passwords

SSH back to the system using your sysd account and port $2222.$

$[$Your solution command here$]$

Escalate your privileges to the root user. Use John to crack the entire $/$etc$/$shadow file.