rootkit

Back in 2017 (feels like ages ago) I decided to take a peek into the ShadowBrokers leaks and reverse some of the tools. I started on dewdrop simply because it had a macOS version. I made local presentations at 0xOpoSec and BSidesLisbon but those slides were never published for obvious reasons (aka live implants all over the Internet). Significant time has passed and everyone went crazy last week with the beautiful NSO exploit VM published by Project Zero, so why not ride the wave and present a simple NSA BPF VM. It is still an interesting work and you have to admire the great engineering that goes behind this code. It’s not everyday that you can take a peek at code developed by a well funded state actor. This post is only going to focus on the BPF part of the implant so you will have to fill in the blanks about everything else. ...

The exploit for the bug I presented last March at SyScan360 is today one year old so I decided to release it. I wasn’t sure if I should do it or not since it can be used in the wild but Google Project Zero also released a working version so it doesn’t really make a difference. I’m also publishing here the final version of the slides that differ slightly from the version made available at the corporate blog....

Finally back home from China and Japan tour, so it’s time to finally release the updated slides about EFI Monsters. After Secuinside I updated them a bit, fixing stuff I wasn’t happy with and adding some new content. The updated version was first presented at 44CON London. I had serious reservations about going to the UK (not even in transit!) but Steve Lord and Adrian charm convinced me to give it a try....

I guess my goal for the remaining 2015 of not doing any presentations will not happen. Two weeks ago I presented at BSides Lisbon 2015 and last week at SECUINSIDE 2015. I’m very happy to see BSides Lisbon returning after the first edition in 2013. Congrats to Bruno, Tiago, and the rest of the team for making it happen. It’s still a small conference but I’m glad they are making it happen, and I will always do my best to help the Portuguese scene going forward....

The suspend/resume vulnerability disclosed a few weeks ago (named Prince Harming by Katie Moussouris) turned out to be a zero day. While (I believe) its real world impact is small, it is nonetheless a critical vulnerability and (another) spectacular failure from Apple. It must be noticed that firmware issues are not Apple exclusive. For example, Gigabyte ships their UEFI with the flash always unlocked and other vendors also suffer from all kinds of firmware vulnerabilities....