Resources

People often ask me "How did you learn how to hack?" The answer: by reading. This page is a collection of the blog posts and other articles that I have accumulated over the years of my journey. Enjoy!

The Apple M1 is an apple computer (no iPhone) that runs on ARM. This was recently released and has been a hot topic for people.

This vulnerability is described as a covert channel between different processes running on the system. Instead of using the memory, sockets or files, an attacker could use this to remain under the radar.

The ARM system register s3_5_c15_c10_1 is directly accessible from EL0. This register contains two bits that can be read or written to (0 and 1). This is a per cluster register that can be accessed by all cores in a cluster. This creates a two bits convert challenge that can be used to send data across processes.

This vulnerability has little impact on the system. However, it is super interesting! This can only be fixed at a hardware level and only affects Apple M1 users.