I have a jailbroken IOS8 device, with an A6X processor. I'd like to pull either the device's kernel or a specific module, and decrypt it to use with a compatible objdump.
The IOS kernel modules do not appear to be on the exposed file system.
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Googled that for you: http://www.slideshare.net/i0n1c/syscan-singapore-2011-stefan-esser-targeting-the-ios-kernel slides 12 and following, by @i0n1c. I don't know if the layout is still the same, but "easier to extract from a firmware image" sounds like good advice.