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My research took me to a place I wouldn’t have expected: The Mimikatz source code. So I started doing some more research to see if there was any way to do that – it’s obviously possible as the UEFI specs describe it, a UEFI shell can easily do it, and Linux does it (via a file system). If you remember, Windows has API calls to get and set UEFI variable values, but not to enumerate them. Grr.) But the recent activity reminded me that there was one thing I couldn’t figure out how to do at the time: Enumerate all the available UEFI variables from within Windows. (Someone then copied the entire article and posted it on their site. It’s also good practice for anyone that wants to learn how.Last year, I published a blog that got into a fair amount of depth on UEFI that was surprisingly popular, both at the time I posted it and again last month after an open source newsletter included a link to it. You’ll have a simple user interface that makes your work easier, while you can also quickly export any of your work when you’re done. UEFITool delivers an outstanding service to those who find EUFI modifications tedious to make. Change your EUFI firmware settings easily

You can also share it online with other developers if you want to get their opinion on the modifications. Exporting imagesĪs the final step, you can export BIOS images and EUFI firmware configurations to your Windows device or an external USB. You can add and remove pieces as you see fit, as long as you know what you’re doing. Image types you can fiddle with include BIN, BIO, ROM, CAP, WPH, FD, and EFI.

If you’re wondering about BIOS compatibility, you’ll be happy to know that there are many functions you can play with and enjoy. UEFITool presents the information to you in an easy-to-read format. Of course, you’ll need some basic knowledge of what you’re looking at before you can make any changes. Everything is laid out neatly for you in windows where you can find all the data you need. The first section that makes UEFI-changing life easier for you is the simple EUFITool interface.