kconner

macOS Internals

Understand your Mac and iPhone more deeply by tracing the evolution of Mac OS X from prelease to Swift. John Siracusa delivers the details.

Starting Points

How to use this gist

You've got two main options:

knightsc

#! /bin/bash
#
# build-xnu-6153.11.26.sh
# Scott Knight
#
# Based on the script by Brandon Azad
# https://gist.github.com/bazad/654959120a423b226dc564073b435453
#
# A script showing how to build XNU version 6153.11.26 on macOS Catalina
# 10.15 with Xcode 11.13.1.

Omar-Ikram

//
//  main.m
//  EndpointSecurityDemo
//
//  Created by Omar Ikram on 17/06/2019 - macOS Catalina 10.15 Beta 1 (19A471t)
//  Updated by Omar Ikram on 15/08/2019 - macOS Catalina 10.15 Beta 5 (19A526h)
//  Updated by Omar Ikram on 01/12/2019 - macOS Catalina 10.15 (19A583)
//  Updated by Omar Ikram on 31/01/2021 - macOS Big Sur 11.1 (20C69)
//  Updated by Omar Ikram on 07/05/2021 - macOS Big Sur 11.3.1 (20E241)
//  Updated by Omar Ikram on 04/07/2021 - macOS Monterey 12 Beta 2 (21A5268h)

knightsc

#import <Foundation/Foundation.h>
#import <EndpointSecurity/EndpointSecurity.h>
#import <os/log.h>
#import <bsm/libbsm.h>

/*
 In the beta 1 seed it's not straight forward to create an EndpointSecurity extension.
 You can use libEndpointSecurity.dylib directly as long as you set the following things:
 
 1. Disable SIP

knightsc

#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <unistd.h>
#include <mach/mach.h>
#include <mach/mach_vm.h>
#include <dlfcn.h>
#include <objc/runtime.h>

openfirmware

QEMU Mac OS 9 Instructions

Here is a short guide on how to build QEMU to run Mac OS 9 with working audio. These instructions work for MacOS High Sierra as the host OS, although with some tweaking they may run under Linux/Windows. You should be comfortable compiling software from source before attempting.

Clone QEMU fork

Adapted from instructions from Cat_7

You may need to install XCode and/or the XCode command line tools. If you do not have them, then this process may prompt you to install them (MacOS will do that).

knightsc

/* Debug boot-args */
#define DB_HALT		0x1
//#define DB_PRT          	0x2 -- obsolete
#define DB_NMI			0x4
#define DB_KPRT		0x8
#define DB_KDB			0x10
#define DB_ARP          	0x40
#define DB_KDP_BP_DIS   	0x80
//#define DB_LOG_PI_SCRN  	0x100 -- obsolete
#define DB_KDP_GETC_ENA 	0x200

jessepeterson

#!/usr/bin/python

# create a "wireless manifest" for Apple pkg installers. for details
# on the manifest see: http://help.apple.com/deployment/osx/#/ior5df10f73a

import subprocess
from tempfile import mkdtemp
import os
from xml.dom.minidom import parse, parseString
from hashlib import md5

sergiitk

OS X terminal tips an tricks

Shell tools

System

• sw_vers — Print Mac OS X operating system version information
• system_profiler — Reports system hardware and software configuration.
• system_profiler SPHardwareDataType — Hardware overview.
• hostinfo — Host information.
• nvram -p — Print all of the firmware variables.
• getconf DARWIN_USER_CACHE_DIR — Retrieve standard configuration variables
• /usr/libexec/path_helper — Helper for constructing PATH environment variable