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cat /dev/brain
Personal blog · naehrdine.blogspot.comsecurityhardware
cat /dev/brain is a personal blog at naehrdine.blogspot.com about security and hardware. Since 2021, 7 different Hacker News readers have linked it 8 times, most often “Reverse Engineering iOS 18 Inactivity Reboot”. It is still writing: the last post was on 2024-11-17, and you can follow it by feed.
Wireless and firmware hacking, PhD life, Technology
Most-linked posts?
- Reverse Engineering iOS 18 Inactivity Reboot3 people · 3 mentions · first linked 2024-11-17
- Always-on Processor magic: How Find My works while iPhone is powered off2 people · 3 mentions · first linked 2021-09-30
What Hacker News says?
Here's a deeper dive on that question: https://naehrdine.blogspot.com/2024/11/reverse-engineering-i... Tl,dr: it's likely baked into the sep, no ntp I'm wondering if you put the phone into a mode where it thinks it's dialing emergency services or contacting them via crash detection etc that it won't reboot. I could picture a scenario where the code is written to never disrupt an emergency services call. Full disclos…
Comment linking /2024/11/reverse-engineering-ios-18-inactivity.html
on “Cops Can Bypass iPhone's Automatic Reboot to Get into Locked Phones”Submitted Reverse Engineering iOS 18 Inactivity Reboot as a story · 522 points
HN discussionThis is true but there's automatic restart which will automatically restart the phone to get it back into BFU state: > Automatic Restart is a security mechanism in iOS 18.1 iPadOS 18.1 and or later that leverages the Secure Enclave to monitor device unlock events. If a device remains locked for a prolonged period, it automatically restarts, transitioning from an After First Unlock state to a Before First Unlock stat…
Comment linking /2024/11/reverse-engineering-ios-18-inactivity.html
on “Washington Post Raid Is a Frightening Reminder: Turn Off Your Phone's Biometrics”Submitted Always-on Processor magic: How Find My works while iPhone is powered off as a story · 470 points
HN discussionSubmitted Always-on processor magic: how "Find My" works while iPhone is powered off as a story · 9 points
HN discussionSubmitted Always-on processor magic: how "Find My" works while iPhone is powered off as a story · 4 points
HN discussionSubmitted Broadcom Bluetooth: Generating (not so?) random numbers as a story · 4 points
HN discussionSubmitted iPhone Setup for Reversing and Debugging (2022) as a story · 2 points
HN discussion