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The Anatomy of a Mach-O: Structure, Code Signing, and PAC

oliviagallucci.com · published 24 June 2025

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https://stackoverflow.com/questions/37415177/what-is-use-of-creating-many-executable-file-formats
stackoverflow.com
https://oliviagallucci.com/?post_type=post&p=74796
oliviagallucci.com
https://nextcomputers.org/files/manuals/nd/DevTools/14_MachO/MachO.htmld/index.html
nextcomputers.org
https://developer.apple.com/documentation/security/code-signing-services
developer.apple.com
https://github.co/hiddenchars
github.co
https://gist.github.com/oliviagallucci/b80af2d6696d3c53d3cefec8ca7ace68/raw/b5bceecdda647548f771b4ae50b0a68659f776a2/install_machoview.sh
gist.github.com
https://gist.github.com/oliviagallucci/b80af2d6696d3c53d3cefec8ca7ace68
gist.github.com
https://github.com
github.com
An in-depth look at the code-signing process: ad-hoc signing Read at the source ↗
alfiecg.uk
https://en.wikipedia.org/wiki/PKCS_7
en.wikipedia.org
https://github.com/apple-opensource/libsecurity_codesigning
github.com
https://eclecticlight.co/2020/11/03/code-signatures-3-fixing-signature-problems/
eclecticlight.co
https://developer.apple.com/library/archive/documentation/Security/Conceptual/CodeSigningGuide/AboutCS/AboutCS.html
developer.apple.com
https://github.com/hwreal/MachOView-1/blob/master/DataController.mm
github.com
https://theos.dev/docs/arm64e-deployment
theos.dev
https://www.youtube.com/watch?v=9neXmcwtCF8
youtube.com
https://developer.apple.com/documentation/security/preparing-your-app-to-work-with-pointer-authentication
developer.apple.com
https://googleprojectzero.blogspot.com/2019/02/examining-pointer-authentication-on.html
googleprojectzero.blogspot.com
https://clang.llvm.org/docs/PointerAuthentication.html
clang.llvm.org
https://developer.arm.com/documentation/ddi0596/2020-12/Base-Instructions/BLRAA--BLRAAZ--BLRAB--BLRABZ--Branch-with-Link-to-Register--with-pointer-authentication-
developer.arm.com
https://gist.github.com/oliviagallucci/1aa838b95e2f8a8f44590d38db0a24d7/raw/f9f6ce9b765bc63cfcef0e4541c2f268fa3a5b8d/pac_demo.c
gist.github.com
https://gist.github.com/oliviagallucci/1aa838b95e2f8a8f44590d38db0a24d7
gist.github.com
https://reviews.llvm.org/D98529
reviews.llvm.org
https://reviews.llvm.org/D115431
reviews.llvm.org
https://appsecuritymapping.com/wp-content/uploads/2023/02/App_Code-Hardening_v2.pdf
appsecuritymapping.com
How to use ROP to bypass security mechanisms Read at the source ↗
oliviagallucci.com
Control Flow Integrity (CFI): User vs Kernel Land Read at the source ↗
oliviagallucci.com
macOS Internals for Detection Engineers Read at the source ↗
oliviagallucci.com
https://book.hacktricks.wiki/en/macos-hardening/macos-security-and-privilege-escalation/macos-security-protections/macos-code-signing.html
book.hacktricks.wiki
A deep dive on macOS universal binaries Read at the source ↗
jviotti.com
Apple Gets an 'F' for Slicing Apples Read at the source ↗
objective-see.org
https://www.mothersruin.com/software/Archaeology/reverse/codesign.html
mothersruin.com
https://newosxbook.com/code/xnu-3789.70.16/bsd/sys/codesign.h
newosxbook.com
Inside Code Signing Technotes Read at the source ↗
mjtsai.com
https://medium.com/csit-tech-blog/demystifying-ios-code-signature-309d52c2ff1d
medium.com
https://deepwiki.com/gdbinit/MachOView/1.1-installation-and-configuration
deepwiki.com
https://github.com/gdbinit/MachOView.git
github.com