2026-09-16

Zyxel: How we got there

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Preamble  This is a follow up on the previous post where I documented how to practically exploit CVE-2026-6952 for affected Zyxel devices ,...
2026-09-04

Gaining root access on Zyxel EE3301 and other vulnerable Zyxel devices

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The  BIG DISCLAIMER These steps worked on the devices I have, which are an EE3301-00 router running firmware V5.63(ACMU.2)C0 . and a WE3300-...
2026-01-14

authval.py - A python script to validate Secure Boot signed auth variables

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Since I had the displeasure of fighting broken/quirky/limited UEFI Firmware implementations, as part of Mosby , and had to double check whet...
2025-06-13

Downloading oscdimg.exe from Microsoft

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In their typical fashion, unless you know what you're doing, Microsoft made it incredibly difficult to get your hands on a simple basi...
2 comments:
2025-02-18

Checking for DLL side-loading vulnerabilities in Windows applications

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Alas, despite this issue being one of the most common plague of win32 applications, and Microsoft having had all the time in the world to m...
2024-10-29

Instructions on how to disable/tweak the Pixel Refresher on LG OLED CX

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NB: This would have been posted in answer to this or this but unfortunately these posts are archived, so it's not possible to comment ...
2 comments:
2024-08-29

Reboot to UEFI firmware settings from UEFI Shell

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reset -c -fwui There, you have it.
2024-08-19

Adding EDK2 as a submodule without cloning it

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Yeah, I have my reasons for this (mostly I commit on Windows, run the builds through GitHub Actions but compile from a non version-controlle...
2024-06-18

Downloading signtool.exe from Microsoft

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In their typical fashion, unless you know what you're doing, Microsoft made it incredibly difficult to get your hands on a simple basic ...
1 comment:
2021-01-05

Python script to fix EDK2 patches downloaded with ThunderBird

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It looks like ThunderBird and the EDK2 mailing list don't play too nice together, and you get annoying double line feeds being inserted ...
2020-12-16

UEFI Hexdump

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If you're developing UEFI firmware content, sooner or later you're going to want to dump binary data using the debug facility. And s...
2020-08-08

Updating XML files with PowerShell

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Say you have the following file.xml : <?xml version="1.0" encoding="UTF-8"?> <data> <item name="I...
2 comments:
2020-07-08

(Ab)using Microsoft's symbol servers, for fun and profit

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Since I find myself doing this on regular basis ( Hail Ghidra! ), and can never quite remember the commands. Say you have a little Microsoft...
1 comment:
2020-06-23

Et tu, Microsoft

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It's a beautiful Saturday afternoon. Everything is going as peachy as could be, with the satisfaction of having released a new version ...
2 comments: