I would love to see details of iBoot. *How* they built a memory safe bootloader ... | Hacker News

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		dcsommer on Dec 14, 2022 \| parent \| context \| favorite \| on: About the security content of iOS 16.2 and iPadOS ... I would love to see details of iBoot. How they built a memory safe bootloader with just "a modified C toolchain" is a pretty important detail. Did add they another language to the toolchain or add a special --memory-safe flag to a forked C compiler?

saagarjha on Dec 14, 2022 [–]

Annotations on top of C, compiled through their private fork of LLVM. Here's what it looks like on our side: https://saaramar.github.io/iBoot_firebloom/

lsllc on Dec 14, 2022 | [–]

Fascinating stuff!

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