[svsm-devel] Potential project on implementing AMD SEV emulation in QEMU

[Stefano Garzarella]

Hi Tom,

On Thu, 17 Apr 2025 at 18:24, Tom Dohrmann <erbse.13 at gmx.de> wrote:
>
> Hi Stefano,
>
> (I do realize I'm not the Tom you wanted to ask)

The question was kind of for everyone, so thank you very much for answering :-)

>
> A while ago, there was a CTF event (hxp 38C3 CTF) where one of the challenges was about attacking some code running inside an SEV guest. The challenge authors implemented SME & SEV for QEMU's TCG backend, so that players could participate even if they don't have the hardware. Their patches are public. Their implementation is probably not complete/accurate and it's likely not particularly cleanly implemented, but IIRC it was good enough to run OVMF and Linux. It might be a good starting point for someone to look at to figure out what needs to be done.

Cool! Yes, this is really a great starting point!

Anyway, the link [1] you shared talked about "AI1337 processor.",
although browsing through the other challenges I found this one [2]
that talks about Confidential VM, I guess you meant the latter.

Thanks again,
Stefano

[1] https://2024.ctf.link/internal/challenge/6b7ff9d7-efc9-47fc-a06e-4ab9ae6d9eaa/
[2] https://2024.ctf.link/internal/challenge/16e69ddd-62b2-467a-9bbc-2ed0867c8e48/