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analyzing-ios-binaries

Analyze iOS applications at the binary level — decrypting FairPlay-protected IPAs with frida-ios-dump or bagbak, inspecting Mach-O load commands, recovering Objective-C headers with class-dump, and reading Swift metadata. Use when working with an IPA or .app bundle, when a downloaded App Store binary shows cryptid=1, when class-dump returns nothing, or when analyzing iOS frameworks and app extensions.

secskills-core/skills/analyzing-ios-binaries/SKILL.md

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# Analyzing iOS Binaries

App Store binaries are encrypted at rest and decrypted by the kernel at load
time, so every static tool fails on a downloaded IPA until you dump the
decrypted image from memory. That single step gates everything else, and it is
the reason most iOS analysis stalls before it starts.

## When to Use

- You have an IPA or `.app` bundle and need to read the binary
- `class-dump` returns nothing or garbage
- `otool` shows `cryptid 1`
- You need to enumerate Objective-C classes, Swift types, or exported symbols
- Analyzing embedded frameworks, app extensions, or dynamic libraries