Fixing kernel timer error in Metasploitable

By on
Image showing laptop with error message.

In this blog:

  • Disclaimer.
  • Fixing the kernel timer error.
  • What's next?
This blog is one of a 4 part series in Metasploitable.

Click here to see how to run a DOS attack on Metasploitable.

Click here to see how to deface Metasploitable's webpage.



Disclaimer

The solution given in this blog is for the kernel timer error that is caused by a misconfiguration in the kernel boot settings in the BIOS.

The solution is not permanent and you must complete the steps each time you start a new session.

Fixing timer errors

To start the virtual machine, go back to VirtualBox and click start.


When starting, if you get this kernel panic – not syncing error message, follow these steps ➡️ 


Image showing Metasploitable bootup screen.
Kernel panick error message.

Go to settings, system and double the base memory to 2048MB.


Image showing virtual machine.
Doubling base memory.

Provide the machine with two processors instead of one and click OK. 


Image showing virtual machine.
Doubling processor count.













Start the machine. You might get a timer error.

Image showing timer error.
Timer error.


Power off the machine and start it again. On this screen, click esc on the keyboard to enter the menu.

Image showing Metasploitable bootup.
Booting Metasploitable in safemode.


Click e.

Image showing Metasploitable kernel settings.
Entering kernel settings.


Click e again.

Image showing Metasploitable kernel settings.
Root bios settings.


Type noapic nolapic acpi=off and click enter.

Image showing Metasploit kernel settings.
Turning acpi off.


Type noapic nolapic acpi=off again and click enter.

Image showing Metasploitable kernel settings.
Turning acpi off again.

Now click b to boot up Metasploitable.


Image showing Metasploitable start screen.
Booting up Metasploitable.


What's next?

Once you have solved this issue, you can go ahead and start configuring Metasploitable and connect it with your Kali Linux box.


Shone is a Cyber Security student at the Manchester Metropolitan University. Shone started writing blogs to document his own learning and help others along the way.

Comments

Post a Comment

Popular posts from this blog

Setting up Metasploitable lab

By on
Image
  In this blog: What is Metsploitable? Downloading Metasploitable on Virtual Machine. Inside Metasploitable. What's next? This blog is one of a 4 part series in Metasploitable. Click here to see how to run a DOS attack on Metasploitable. Click here to see how to deface Metasploitable's webpage. Click here to see how to fix a common timer error that occurs during bootup .  Click here to see how to connect Metasploitable with Kali Linux . What is Metasploitable? Metasploitable is an intentionally vulnerable Linux based virtual machine that is used to train pentesters and security professionals.   As mentioned, the machine is vulnerable to attacks that are not possible to execute on modern systems and is solely for educational purposes.  Metasploitable should not be able to face the public network due to its vulnerability.  Downloading Metasploitable on Virtual Machine Download Metasploitable2 here ➡️  https://sourceforge.net/projects/metasploitable/ ...
Read more

VeraCrypt

By on
Image
  In this blog: What is VeraCrypt? Installation. Creating an encrypted file container. Mounting devices. Inside locked-container. What is VeraCrypt? This is a continuation of the Steghide walkthrough - found here ➡️   https://shonepcyber.blogspot.com/2023/08/steghide-linux.html   VeraCrypt can be downloaded on Mac, Windows, and most other Linux based operating systems.   It is a free and open source disk encryption program.   VeraCrypt can create virtual encrypted disks, encrypt partitions, or encrypt the entire storage device with pre-boot authentication.   Uses enhanced security in algorithms which makes it fairly immune to advancements in brute force attacks.   The latest Linux tarball of VeraCrypt can be found at https://www.veracrypt.fr/en/Downloads.html . ➡️ VeraCrypt website. Installation Start the program once it has been downloaded. The software downloaded into my...
Read more

Tripwire

By on
Image
  In this blog: What is Tripwire? Mirrors. Installation. Initialise Tripwire. Edit twpol.txt. File integrity check. Securing our system. Email notifications.   See my blog on Intrusion Detection systems here. What is Tripwire? Tripwire is a popular open-source Linux IDS that's used for file integrity monitoring -- Basically checking for unauthorised changes to your files.  I will be using Kali Linux, which is a Debian based distro. Tripwire is part of the default repository in Ubuntu and Debian, meaning we can install it using commands in the terminal. Mirrors Before installing the tool, we must update the list of packages in the repos, which is used by the apt tool to determine the URL of the package to install.  Run ➡️  sudo apt-get update Without updating, the download manager might not be able to find the URL as the list could be out of date.  This is not a requirement if you know that the specific package you want has not been altered (no new version o...
Read more