Case study - debugging race condition in golang
Published at August 19, 2020 · Igor Bagnucki · 5 min read
In this article, we analyze different approaches to debugging race conditions based on the case study. The most intuitive approach can work, but in reality, there may be better ways to find and fix the problem....
Categories: app-dev firmware iot manufacturing miscellaneous os-dev security
TrenchBoot: Open Source DRTM. TPM event log all the way.
Published at August 13, 2020 · Krystian Hebel · 12 min read
We extended the TPM event log support to the Linux kernel. It is now possible to print all of the PCR extend operations performed and compare the hashes with files to see if anything is wrong....
coreboot Fundamentals Training
Published at August 9, 2020 · Kamila Banecka · 4 min read
coreboot Fundamentals Training is the first step of 3mdeb Firmware Training path. It provides solid grounds for further development towards proficiency in coreboot firmware platform enginering. With this blogpost we are starting coreboot fundamentals mini-course....
Categories: firmware miscellaneous
Secure Application – Best coding practices
Published at July 23, 2020 · Malwina Mika · 7 min read
When building an application, we must assume that it will be exposed to attackers at all times and may be misused by ordinary recipients. The danger of the first group seems obvious, but what kind of risk a standard user brings?...
Categories: app-dev development security
Project status of the fwupd/LVFS support for Qubes OS
Published at July 14, 2020 · Norbert Kamiński · 5 min read
During the QubesOS minisummit, I have presented the initial status of the fwupd/LVFS support for the Qubes OS. Now it is time to share some more information about the progress....
TrenchBoot: Open Source DRTM. GRUB's new features and TPM event log.
Published at July 3, 2020 · Piotr Kleinschmidt · 17 min read
This blog post will show you what features we have added to GRUB and why they are useful from user's point of view. Also, there will be shown how to utilize TPM event logs and hence debug DRTM....
DEV and IOMMU: a story of two DMA protection mechanisms
Published at July 3, 2020 · Krystian Hebel · 12 min read
Both DEV and IOMMU can help with protection against malicious DMA. This post roughly describes the difference between those two, as well as the impact they have on each other in the context of TrenchBoot...
Dell OptiPlex and coreboot - a story about porting cursed hardware (part 1)
Published at June 24, 2020 · Michał Żygowski · 6 min read
This post begins a new series telling a story of a stubborn firmware engineer who overcame never-ending amount of obstacles to create a Dell OptiPlex 9010 workstation as open as possible. In this series, you will not only read about the adventures which accompanied the work on the hardware but also you will have a chance to learn the way of BIOS developer....
Categories: firmware
Qubes OS & 3mdeb 'minisummit' 2020 summation
Published at June 17, 2020 · Kamila Banecka · 8 min read
The second Qubes OS & 3mdeb minisummit is ahead of us. We had gone through four evenings of topics devoted to Qubes OS, so it is time for broad summation of the event....
Categories: firmware miscellaneous security
Starting TrenchBoot's Landing Zone from iPXE
Published at June 1, 2020 · Krystian Hebel · 10 min read
In this article we present support for starting Landing Zone from another bootloader: iPXE. It may not be as featureful as GRUB2, but it has enough juice to start DRTM using images obtained from a remote server...
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