Difference between revisions of "Mac OS X"
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Revision as of 18:07, 12 June 2014
Apple Inc.'s Macintosh OS X (pronounced "OS Ten") is the operating system distributed with Apple computers. It includes heavily used several programs by default, including Apple Mail, a web browser called Safari, and an Apple Address Book, and iCal.
Disk image types
Mac OS X has support for various disk image types build-in, some of which are:
- read-write disk image (.dmg) some of which use the Raw Image Format
- Sparse disk image (.spareimage)
- Sparse bundle disk image (.sparsebundle)
Mac OS X Burn Folder:
This folder normally contains alias files (similar to LNK files under Windows). Which should have the following signature.
00000000 62 6f 6f 6b 00 00 00 00 6d 61 72 6b 00 00 00 00 |book....mark....|
These alias files contain additional date and time values.
Also check the following files for references to deleted .fpbf paths:
Actual burning of optical media is logged in:
/var/log/system.log /Users/$USERNAME/Library/Logs/DiscRecording.log /private/var/.logs_exporter/cache/Users/$USERNAME/Library/Logs/DiscRecording.log
HFS/HFS+ date and time values
In HFS+ date and time values are stored in an unsigned 32-bit integer containing the number of seconds since January 1, 1904 at 00:00:00 (midnight) UTC (GMT). This is slightly different from HFS where the date and time value are stored using the local time. The maximum representable date is February 6, 2040 at 06:28:15 UTC (GMT). The date values do not account for leap seconds. They do include a leap day in every year that is evenly divisible by four. This is sufficient given that the range of representable dates does not contain 1900 or 2100, neither of which have leap days. Also see: Technical Note TN1150 - HFS Plus Volume Format
Converting HFS/HFS+ date and time values with Python:
import datetime print datetime.datetime( 1904, 1, 1 ) + datetime.timedelta( seconds=0xCBDAF25B )
Quarantine event database
Snow Leopard and earlier
SELECT datetime(LSQuarantineTimeStamp + 978307200, "unixepoch") as LSQuarantineTimeStamp, LSQuarantineAgentName, LSQuarantineOriginURLString, LSQuarantineDataURLString from LSQuarantineEvent;
Lion and later
This file is similar to the hibernation file on Windows.
Also see: 
Package Files (.PKG)
- MacOS Process Monitoring
- Acquiring a MacOS System with Target Disk Mode
- Converting Binary Plists
- FileVault Disk Encryption
- File Vault
- Official website
- Wikipedia entry on OS X
- Quarantine event database
- Mac Forensics: Mac OS X and the HFS+ File System by P. Craiger
- Mac OS X Directory Services Integration including Active Directory
- NSKeyedArchiver files – what are they, and how can I use them?
- Command Line ALF on Mac OS X
- Demystifying the DMG File Format
- The Apple Examiner
- USB Entries on OS X
- Macintosh Forensics - A Guide for the Forensically Sound Examination of a Macintosh Computer by Ryan R. Kubasiak