ldid ☆

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Description:
Lets you manipulate the signature block in a Mach-O binary

Type: Formula | Latest Version: 2.1.5@0 | Tracked Since: Nov 4, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: codesigning mach-o ios macos development security

Install: brew install ldid

About:
ldid is a command-line utility designed to inspect and manipulate the code signature block of Mach-O binaries, the executable format used by macOS and iOS. It allows developers to view signature details, remove existing signatures, or apply ad-hoc signatures, which is essential for tasks like code signing on jailbroken devices or for testing purposes. The tool provides a lightweight alternative to Apple's full codesign suite for specific signature manipulation needs.

Key Features:

Inspect and display code signature information from Mach-O files
Remove existing code signatures from binaries
Apply ad-hoc signatures for development and testing
Support for both 32-bit and 64-bit architectures

Use Cases:

Preparing applications for sideloading on non-jailbroken iOS devices
Removing signatures from binaries for dynamic analysis or reverse engineering
Re-signing binaries after patching for testing purposes on macOS/iOS

Alternatives:

codesign – Apple's official tool is more comprehensive for production signing but ldid is simpler for ad-hoc signatures and signature removal.

Version History

Detected	Version	Rev	Change	Commit
Nov 4, 2025 12:04am		1	VERSION_BUMP	7f829b84