Pkg Splitter Mac

A fast, scriptable tool for developers and IT professionals to split macOS installer packages into modular components for inspection and modification.

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About This Tool

Purpose-built for developers, IT teams, and security analysts, this tool parses macOS installer packages (.pkg) to reveal internal components. Conceptually it expands the package, enumerates Payloads, scripts, and metadata, and constructs a component map that enables targeted inspection or extraction. Users leverage the component list to audit contents, verify integrity, or prepare selective payloads for analysis. Unique value lies in deterministic outputs, exportable manifests, and optional per-component checksums that support reproducibility and change tracking. Core features include input validation, package expansion, component enumeration, manifest generation, and optional checksum calculation. Use cases include security reviews of installers, compliance verification, and offline analysis where full execution is not feasible. The tool is designed for integration into CI pipelines or manual workflows where precise component-level visibility is required. It complements existing macOS packaging tooling by offering a focused, auditable split process and a clear payload export path.

How to Use

  1. Provide inputs: input_pkg_path, output_dir, optional split_pattern.
  2. Validate data: ensure PKG validity and sufficient disk space.
  3. Run calculation: expand and enumerate components.
  4. Review outputs: inspect component_map.json and payload_exports.
  5. Export/re-pack: copy or prepare components for manual reassembly if needed.
How to use pkg splitter mac

Frequently Asked Questions

Find Quick Answers

What is PKG splitting used for?
PKG splitting exposes the internal structure of macOS installer packages, enabling inspection of payloads, scripts, and metadata without installation. It is useful for security audits, malware analysis, and customization planning.
What outputs are produced?
The tool generates a component_map with component metadata, a components list with paths and sizes, and an exported payload directory containing extracted files. Optional per-component checksums can be produced for integrity verification.
Can I re-pack the PKG after splitting?
The tool focuses on exporting and inspecting components. It does not modify the source PKG. You can prepare components for manual reassembly with standard packaging utilities, but automatic re-pack within the tool is not guaranteed.
What assumptions are made?
Assumes standard PKG layouts and readable Payload sections. It does not decrypt encrypted payloads, and it requires access to macOS packaging conventions. It is intended for analysis, not automated deployment.

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