Collaborate Disseminate
There’s a reasonably well known exploit of Grub/Linux systems that the recovery console can very easily be used to gain root access into a system. (Just set init=/bin/bash before booting).
This is often dismissed as less of a concern becau… Continue reading Is there a safe way to prevent grub from entering recovery console? [closed]
For a brief moment in the late ’00s, netbooks dominated the low-cost mobile computing market. These were small, low-cost, low-power laptops, some tiny enough to only have a seven-inch display, …read more Continue reading An Old Netbook Spills Its Secrets
I encrypted my Ubuntu Desktop 20.04.3 with LVM/LUKS during the installation process. If I turn off the computer, is the brute force the only attack available for getting the password and accessing the files? I think it doesn’t encrypt the … Continue reading Full disk encryption with LUKS?
I have a Dell Inspiron 2n1 laptop which recently noticed that it was affected by a bug called Boot Hole, which is a kind of damn bug that targets GRUB/Linux Secure Boot/Windows. And I might think it’s interfering on both virtualization sof… Continue reading My laptop was affected by Boot Hole bug. What now?
Dualbooting your computer can be a chore, the more switching between OSes you have to do – which is why virtualization or having separate computers are the go-to for many. …read more Continue reading Simple Hardware Switch For OS Dualbooting, Thanks To RP2040
Definitions
Grub is the second stage bootloader often found in Linux distributions.
shim is the first bootloader ran by the ROM firmware. It is signed by Microsoft.
ROM firmware is the code embedded in the hardware which implements the UEF… Continue reading Is grub implementation of secure boot inherently flawed?
First some definitions and common understanding.
The premise of secure boot is that each binary get’s verified before
it is loaded. This starts with the firmware in ROM verifying the EFI
application.
For the case of a Linux boot that EFI … Continue reading How to prevent grub.cfg from breaking the chain of trust?
First some definitions and common understanding.
The premise of secure boot is that each binary get’s verified before
it is loaded. This starts with the firmware in ROM verifying the EFI
application.
For the case of a Linux boot that EFI … Continue reading How to prevent grub.cfg from breaking the chain of trust?
I used Windows and Kali Linux together for some time. Yesterday I changed my Windows, but after reinstalling Windows, grub was gone and the laptop was directly booting to Windows.
(Both Kali and Windows are in EFI and HDD is GPT)
I made ch… Continue reading Empty Grub after installing windows over kali [migrated]
Virtualisation can do reasonably secure nonpersistent drives. Would rather not rely on this alone but also have a host that is nonpersistent too. A live DVD as a host leaves no traces and is physically impossible to permanently infect/own … Continue reading Most secure linux equivalent to Shadow Defender for live CD-like nonpersistency with no traces left (or traces that are encrypted)