Difference between pages "RegXML" and "Mac OS X"

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(Sample XML: Note the current sample was the first version)
 
 
Line 1: Line 1:
RegXML is an XML syntax analogous to [[Digital Forensics XML]].
+
{{Expand}}
  
==Disambiguation==
+
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 [[Apple Safari | Safari]], and an [[Apple Address Book]], and [[iCal]].
  
Please note that RegXML is *also* the name of a Windows command-line utility that exports sections of the Windows Registry as XML-formatted files.  That program was released on Softpedia.  It is a completely separate effort from RegXML otherwise mentioned in this article.
+
== EFI boot ==
 +
The firmware is responsible for initializing the hardware and performing a POST (Power-On Self Test).
  
==Sample XML==
+
The default boot volume is stored in NVRAM and can be configured through the "Startup Disk" preference pane or the nvram command line utility [https://developer.apple.com/library/mac/documentation/Darwin/Reference/Manpages/man8/nvram.8.html]. E.g. to print all of the firmware variables.
 +
<pre>
 +
nvram -p
 +
</pre>
  
This RegXML is a sample of the System hive from the [http://digitalcorpora.org/corpora/scenarios/m57-patents-scenario M57-Patents scenario], image Charlie 2009-11-16.  Its structure is of the first version of RegXML, a deep-hierarchy structure created by extending the [http://libguestfs.org/hivexml.1.html Hivexml] utility.
+
Additional boot arguments can be provided via the "boot-args" value [http://www.cnet.com/news/boot-argument-options-in-os-x/].
  
 +
Mac OS X extends EFI with a read-only HFS+ driver. According to [http://refit.sourceforge.net/info/boot_process.html] HFS+ volume header fields are used to point to a "blessed file" to be loaded as an EFI application. Though it is not clear which header field the source is referring to but likely related to the "bless" utility [https://developer.apple.com/library/mac/documentation/Darwin/Reference/Manpages/man8/bless.8.html].
 +
 +
The firmware start the Mac OS X boot loader (boot.efi). The bootloader displays a dark grey Apple logo on the screen and loads the Darwin kernel from disk, as well as the essential driver extensions.
 +
 +
The bootloader can be eithe a MZ-PE/COFF or EFI fat binary type [[Executable|executables]] and is commonly stored in:
 
<pre>
 
<pre>
<?xml version="1.0" encoding="UTF-8"?>
+
/com.apple.recovery.boot/boot.efi
<hive>
+
/System/Library/CoreServices/boot.efi
  <mtime>2009-11-17T00:33:57Z</mtime>
+
/usr/standalone/i386/boot.efi
  <node name="$$$PROTO.HIV" root="1">
+
    <mtime>2009-11-13T04:47:33Z</mtime>
+
    <byte_runs>
+
      <byte_run file_offset="4128" len="92"/>
+
    </byte_runs>
+
    <node name="ControlSet002">
+
      <mtime>2009-11-09T01:26:39Z</mtime>
+
      <byte_runs>
+
        <byte_run file_offset="1480856" len="93"/>
+
      </byte_runs>
+
      <node name="Control">
+
        <mtime>2009-11-13T04:48:01Z</mtime>
+
        <byte_runs>
+
          <byte_run file_offset="1481240" len="87"/>
+
        </byte_runs>
+
        <value type="string" key="WaitToKillServiceTimeout" value="20000">
+
          <byte_runs>
+
            <byte_run file_offset="1481328" len="48"/>
+
            <byte_run file_offset="13448" len="16"/>
+
          </byte_runs>
+
        </value>
+
        <value type="string" key="SystemStartOptions" value="NOEXECUTE=OPTIN  FASTDETECT">
+
          <byte_runs>
+
            <byte_run file_offset="1481464" len="42"/>
+
            <byte_run file_offset="3006752" len="60"/>
+
          </byte_runs>
+
        </value>
+
        <value type="string" key="SystemBootDevice" value="multi(0)disk(0)rdisk(0)partition(1)">
+
          <byte_runs>
+
            <byte_run file_offset="3006856" len="40"/>
+
            <byte_run file_offset="3206056" len="76"/>
+
          </byte_runs>
+
        </value>
+
        <node name="Windows">
+
          <mtime>2009-11-13T03:08:00Z</mtime>
+
          <byte_runs>
+
            <byte_run file_offset="2355232" len="87"/>
+
          </byte_runs>
+
          <value type="expand" key="SystemDirectory" value="%SystemRoot%\system32">
+
            <byte_runs>
+
              <byte_run file_offset="2355368" len="39"/>
+
              <byte_run file_offset="3111128" len="48"/>
+
            </byte_runs>
+
          </value>
+
          <value type="binary" encoding="base64" key="ShutdownTime" value="RDGhgQ5kygE=">
+
            <byte_runs>
+
              <byte_run file_offset="3203784" len="36"/>
+
              <byte_run file_offset="1481592" len="12"/>
+
            </byte_runs>
+
          </value>
+
        </node>
+
        <node name="WOW">
+
          <mtime>2009-11-09T01:22:59Z</mtime>
+
          <byte_runs>
+
            <byte_run file_offset="2359096" len="83"/>
+
          </byte_runs>
+
          <value type="expand" key="cmdline" value="%SystemRoot%\system32\ntvdm.exe">
+
            <byte_runs>
+
              <byte_run file_offset="2358720" len="31"/>
+
              <byte_run file_offset="2359184" len="68"/>
+
            </byte_runs>
+
          </value>
+
          <value type="string" key="KnownDLLs" value="comm.drv commdlg.dll ctl3dv2.dll ddeml.dll
+
keyboard.drv lanman.drv mmsystem.dll mouse.drv netapi.dll olecli.dll olesvr.dll pmspl.dll shell.dll
+
sound.drv system.drv toolhelp.dll vga.drv wfwnet.drv win87em.dll winoldap.mod winsock.dll
+
winspool.exe wowdeb.exe timer.drv rasapi16.dll compobj.dll storage.dll ole2.dll ole2disp.dll
+
ole2nls.dll typelib.dll msvideo.dll avifile.dll msacm.dll mciavi.drv mciseq.drv mciwave.drv
+
progman.exe avicap.dll mapi.dll">
+
            <byte_runs>
+
              <byte_run file_offset="2359256" len="33"/>
+
              <byte_run file_offset="2361648" len="904"/>
+
            </byte_runs>
+
          </value>
+
        </node>
+
      </node>
+
    </node>
+
  </node>
+
</hive>
+
 
</pre>
 
</pre>
  
==See Also==
+
The behavior of the bootloader can be configured in the com.apple.Boot.plist [https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man5/com.apple.Boot.plist.5.html] which can be found in:
 +
<pre>
 +
/Library/Preferences/SystemConfiguration/
 +
</pre>
 +
 
 +
== 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 Image format|Sparse disk image (.spareimage)]]
 +
* [[Sparse Bundle Image format|Sparse bundle disk image (.sparsebundle)]]
 +
 
 +
== Burn Folder ==
 +
 
 +
Mac OS X Burn Folder:
 +
<pre>
 +
$NAME.fpbf
 +
</pre>
 +
 
 +
This folder normally contains [[Mac OS X Alias Files|alias files]] (similar to LNK files under Windows). Which should have the following signature.
 +
<pre>
 +
00000000  62 6f 6f 6b 00 00 00 00  6d 61 72 6b 00 00 00 00  |book....mark....|
 +
</pre>
 +
 
 +
These [[Mac OS X Alias Files|alias files]] contain additional date and time values.
 +
 
 +
Also check the following files for references to deleted .fpbf paths:
 +
<pre>
 +
/Users/$USERNAME/Library/Preferences/com.apple.finder.plist
 +
/Users/$USERNAME/Library/Preferences/com.apple.sidebarlists.plist
 +
</pre>
 +
 
 +
Actual burning of optical media is logged in:
 +
<pre>
 +
/var/log/system.log
 +
/Users/$USERNAME/Library/Logs/DiscRecording.log
 +
/private/var/.logs_exporter/cache/Users/$USERNAME/Library/Logs/DiscRecording.log
 +
</pre>
 +
 
 +
== 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: [http://web.archive.org/web/20090214212148/http://developer.apple.com/technotes/tn/tn1150.html Technical Note TN1150 - HFS Plus Volume Format]
 +
 
 +
Converting HFS/HFS+ date and time values with Python:
 +
<pre>
 +
import datetime
 +
 
 +
print datetime.datetime( 1904, 1, 1 ) + datetime.timedelta( seconds=0xCBDAF25B )
 +
</pre>
 +
 
 +
== Launch Agents ==
 +
System-wide:
 +
<pre>
 +
/Library/LaunchAgents
 +
/System/Library/LaunchAgents
 +
</pre>
 +
 
 +
Per user:
 +
<pre>
 +
/Users/$USERNAME/Library/LaunchAgents
 +
</pre>
 +
 
 +
These directories contain  [[Property list (plist)]] files.
 +
 
 +
== Launch Daemons ==
 +
System-wide:
 +
<pre>
 +
/Library/LaunchDaemons
 +
/System/Library/LaunchDaemons
 +
</pre>
 +
 
 +
These directories contain [[Property list (plist)]] files.
 +
 
 +
== Startup Items ==
 +
<pre>
 +
/Library/StartupItems/
 +
/System/Library/StartupItems/
 +
</pre>
 +
 
 +
== Crash Reporter ==
 +
<pre>
 +
/Library/Application Support/CrashReporter
 +
</pre>
 +
 
 +
Contains text files named .crash, .diag, .spin
 +
 
 +
== Diagnostic Reports ==
 +
<pre>
 +
/Library/Logs/DiagnosticReports
 +
</pre>
 +
 
 +
== Internet Plug-Ins ==
 +
System-wide:
 +
<pre>
 +
/Library/Internet Plug-Ins
 +
</pre>
 +
 
 +
Per user:
 +
<pre>
 +
/Users/$USERNAME/Library/Internet Plug-Ins
 +
</pre>
 +
 
 +
== Quarantine event database ==
 +
See [http://menial.co.uk/blog/2011/06/16/mac-quarantine-event-database/]
 +
 
 +
Snow Leopard and earlier
 +
<pre>
 +
/Users/$USER/Library/Preferences/com.apple.LaunchServices.QuarantineEvents
 +
</pre>
 +
 
 +
<pre>
 +
SELECT datetime(LSQuarantineTimeStamp + 978307200, "unixepoch") as LSQuarantineTimeStamp, LSQuarantineAgentName, LSQuarantineOriginURLString, LSQuarantineDataURLString from LSQuarantineEvent;
 +
</pre>
 +
 
 +
Lion and later
 +
<pre>
 +
/Users/$USER/Library/Preferences/com.apple.LaunchServices.QuarantineEventsV2
 +
</pre>
 +
 
 +
== sleepimage ==
 +
This file is similar to the hibernation file on Windows.
 +
<pre>
 +
/private/var/vm/sleepimage
 +
</pre>
 +
 
 +
Also see: [http://osxdaily.com/2010/10/11/sleepimage-mac/]
 +
 
 +
== Last shutdown logs ==
 +
<pre>
 +
/private/var/log/com.apple.launchd/launchd-shutdown.system.log
 +
/private/var/log/com.apple.launchd/launchd-shutdown.system.log.1
 +
</pre>
 +
 
 +
== Package Files (.PKG) ==
 +
Package Files (.PKG) are XAR archives [http://en.wikipedia.org/wiki/Xar_(archiver)] that contain a cpio archive and metadata [http://s.sudre.free.fr/Stuff/Ivanhoe/FLAT.html].
 +
 
 +
== Also see ==
 +
* [[MacOS Process Monitoring]]
 +
* [[Acquiring a MacOS System with Target Disk Mode]]
 +
* [[Converting Binary Plists]]
 +
* [[FileVault Disk Encryption]]
 +
* [[File Vault]]
 +
 
 +
=== Formats ===
 +
* [[Basic Security Module (BSM) file format]]
 +
* [[Property list (plist)]]
 +
 
 +
== External Links ==
 +
* [http://www.apple.com/macosx/ Official website]
 +
* [http://en.wikipedia.org/wiki/OS_X Wikipedia entry on OS X]
 +
* [http://menial.co.uk/blog/2011/06/16/mac-quarantine-event-database/ Quarantine event database]
 +
* [http://www2.tech.purdue.edu/cit/Courses/cit556/readings/MacForensicsCraiger.pdf Mac Forensics: Mac OS X and the HFS+ File System] by P. Craiger
 +
* [http://web.me.com/driley/iWeb/Previous_files/Directory_Services_Overview.pdf Mac OS X Directory Services Integration including Active Directory]
 +
* [http://digitalinvestigation.wordpress.com/2012/04/04/geek-post-nskeyedarchiver-files-what-are-they-and-how-can-i-use-them/ NSKeyedArchiver files – what are they, and how can I use them?]
 +
* [http://krypted.com/mac-os-x/command-line-alf-on-mac-os-x/ Command Line ALF on Mac OS X]
 +
* [http://newosxbook.com/DMG.html Demystifying the DMG File Format]
 +
* [https://code.google.com/p/mac-security-tips/wiki/ALL_THE_TIPS mac-security-tips]
 +
 
 +
=== Apple Examiner ===
 +
* [http://www.appleexaminer.com/ The Apple Examiner]
 +
* [http://www.appleexaminer.com/MacsAndOS/Analysis/USBOSX/USBOSX.html USB Entries on OS X]
 +
* [http://www.appleexaminer.com/Downloads/MacForensics.pdf Macintosh Forensics - A Guide for the Forensically Sound Examination of a Macintosh Computer] by Ryan R. Kubasiak
 +
 
 +
=== EFI ===
 +
* [http://refit.sourceforge.net/info/boot_process.html The Intel Mac boot process], by the [[rEFIt|rEFIt project]]
 +
* [http://ho.ax/posts/2012/02/carving-up-efi-fat-binaries/ Carving up EFI fat binaries], by snare, February 24, 2012
 +
 
 +
=== iCloud ===
 +
* [http://support.apple.com/kb/HT4865?viewlocale=en_US&locale=en_US iCloud: iCloud security and privacy overview]
  
* A. Nelson, “RegXML: XML conversion of the Windows Registry for forensic processing and distribution,” in Advances in Digital Forensics VIII, ser. IFIP Advances in Information and Communication Technology, K.-P. Chow and S. Shenoi, Eds. Springer, 2012.
+
[[Category:Mac OS X]]
* [https://github.com/ajnelson/regxml_extractor RegXML Extractor] (on github)
+
[[Category:Operating systems]]

Revision as of 09:07, 25 June 2014

Information icon.png

Please help to improve this article by expanding it.
Further information might be found on the discussion page.

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.

EFI boot

The firmware is responsible for initializing the hardware and performing a POST (Power-On Self Test).

The default boot volume is stored in NVRAM and can be configured through the "Startup Disk" preference pane or the nvram command line utility [1]. E.g. to print all of the firmware variables.

nvram -p

Additional boot arguments can be provided via the "boot-args" value [2].

Mac OS X extends EFI with a read-only HFS+ driver. According to [3] HFS+ volume header fields are used to point to a "blessed file" to be loaded as an EFI application. Though it is not clear which header field the source is referring to but likely related to the "bless" utility [4].

The firmware start the Mac OS X boot loader (boot.efi). The bootloader displays a dark grey Apple logo on the screen and loads the Darwin kernel from disk, as well as the essential driver extensions.

The bootloader can be eithe a MZ-PE/COFF or EFI fat binary type executables and is commonly stored in:

/com.apple.recovery.boot/boot.efi
/System/Library/CoreServices/boot.efi
/usr/standalone/i386/boot.efi

The behavior of the bootloader can be configured in the com.apple.Boot.plist [5] which can be found in:

/Library/Preferences/SystemConfiguration/

Disk image types

Mac OS X has support for various disk image types build-in, some of which are:

Burn Folder

Mac OS X Burn Folder:

$NAME.fpbf

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:

/Users/$USERNAME/Library/Preferences/com.apple.finder.plist
/Users/$USERNAME/Library/Preferences/com.apple.sidebarlists.plist

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 )

Launch Agents

System-wide:

/Library/LaunchAgents
/System/Library/LaunchAgents

Per user:

/Users/$USERNAME/Library/LaunchAgents

These directories contain Property list (plist) files.

Launch Daemons

System-wide:

/Library/LaunchDaemons
/System/Library/LaunchDaemons

These directories contain Property list (plist) files.

Startup Items

/Library/StartupItems/
/System/Library/StartupItems/

Crash Reporter

/Library/Application Support/CrashReporter

Contains text files named .crash, .diag, .spin

Diagnostic Reports

/Library/Logs/DiagnosticReports

Internet Plug-Ins

System-wide:

/Library/Internet Plug-Ins

Per user:

/Users/$USERNAME/Library/Internet Plug-Ins

Quarantine event database

See [6]

Snow Leopard and earlier

/Users/$USER/Library/Preferences/com.apple.LaunchServices.QuarantineEvents
SELECT datetime(LSQuarantineTimeStamp + 978307200, "unixepoch") as LSQuarantineTimeStamp, LSQuarantineAgentName, LSQuarantineOriginURLString, LSQuarantineDataURLString from LSQuarantineEvent;

Lion and later

/Users/$USER/Library/Preferences/com.apple.LaunchServices.QuarantineEventsV2

sleepimage

This file is similar to the hibernation file on Windows.

/private/var/vm/sleepimage

Also see: [7]

Last shutdown logs

/private/var/log/com.apple.launchd/launchd-shutdown.system.log
/private/var/log/com.apple.launchd/launchd-shutdown.system.log.1

Package Files (.PKG)

Package Files (.PKG) are XAR archives [8] that contain a cpio archive and metadata [9].

Also see

Formats

External Links

Apple Examiner

EFI

iCloud