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Tool

dyld_cache_extract

macOS application and command-line tool that reads a dyld_shared_cache file from macOS or iOS, shows its header, mappings and image list, and copies one library or every library out to a directory. The CLI offers --info, --extract and --extract-all; the GUI presents the same header details and lets users select images to extract. The README marks the project obsolete and points to the author's dyld-cache-dump.

Requirements & limits

  • The README marks the project obsolete and refers users to dyld-cache-dump. The last commits, on 2023-06-12, fix the build for the then-current Xcode and update CI and the README. Releases 0.1.0 (2017-03-06) and 0.1.1 (2017-06-18) each attach a zipped Dyld Cache Extractor app; there is no newer release.
  • Builds on macOS with Xcode from dyld_cache_extract.xcodeproj, whose schemes cover the CLI tool, the GUI app and the DCE static library; the PIMPL, GitHubUpdates and xcconfig submodules must be initialized. CI builds and analyzes Debug and Release configurations of the CLI and GUI on macos-latest, with tests disabled.
  • Needs a dyld_shared_cache file from the user's own macOS or iOS system; the repository contains no caches or extracted libraries. The parser reads only the original header fields (magic, mapping and image tables, dyld base address) of a single cache file and copies each image's bytes plus the __LINKEDIT region; the reviewed code has no split sub-cache handling, and support for current macOS or iOS caches is not documented.
  • MIT license (2016, Jean-David Gadina, XS-Labs). Nothing was built or run, and no cache was parsed for this review.

About this entry

Type
Tool
Category
Native analysis tools
Relationship
Foundation tool
Targets
App · Binary

Sources reviewed

The description was reviewed against primary sources. This does not establish runtime testing, security auditing or verified compatibility.

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Primary sources

  1. README.md GitHub · macmade/dyld_cache_extract · Revision b29fbb9
  2. LICENSE GitHub · macmade/dyld_cache_extract · Revision b29fbb9
  3. .gitmodules GitHub · macmade/dyld_cache_extract · Revision b29fbb9
  4. .github/workflows/ci-mac.yaml GitHub · macmade/dyld_cache_extract · Revision b29fbb9
  5. DCE/source/CacheFile.cpp GitHub · macmade/dyld_cache_extract · Revision b29fbb9
  6. dyld_cache_extract/main.cpp GitHub · macmade/dyld_cache_extract · Revision b29fbb9
  7. https://github.com/macmade/dyld_cache_extract/releases/tag/0.1.1

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