Difference between pages "Mac OS X" and "SANS Investigative Forensic Toolkit Workstation"

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'''The SANS SIFT Workstation''' is a [[VMware]] Appliance that is preconfigured with all the necessary tools to perform a forensic examination. It is compatible with [[Encase | Expert Witness Format]] (E01), Advanced Forensic Format ([[AFF]]), and raw (dd) evidence formats.
  
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]].
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== Overview ==
  
== Disk image types ==
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SIFT Workstation is based on Ubuntu.
  
Mac OS X has support for various disk image types build-in, some of which are:
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Software Includes:  
* [[Raw Image Format|read-write disk image (.dmg)]]
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* [[Sparse Image format|Sparse disk image (.spareimage)]]
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* [[Sparse Bundle Image format|Sparse bundle disk image (.sparsebundle)]]
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== Burn Folder ==
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# [[The Sleuth Kit]]
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# [[ssdeep]] & [[md5deep]]
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# [[Foremost]]/[[Scalpel]]
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# [[Wireshark]]
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# HexEditor
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# [[Vinetto]] ([[thumbs.db]] examination)
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# Pasco
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# Rifiuti
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# [[Volatility Framework]]
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# DFLabs PTK (GUI Front-End for [[Sleuthkit]])
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# [[Autopsy]] (GUI Front-End for [[Sleuthkit]])
  
Mac OS X Burn Folder:
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The SIFT Workstation will allow evidence to be viewed from a Windows workstation. The /images directory and the evidence mount point, the /mnt/hack directory, can be viewed from the local Windows operating system.
<pre>
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$NAME.fpbf
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</pre>
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This folder normally contains [[Mac OS X Alias Files|alias files]] (similar to LNK files under Windows). Which should have the following signature.
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== Links ==
<pre>
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00000000  62 6f 6f 6b 00 00 00 00  6d 61 72 6b 00 00 00 00  |book....mark....|
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</pre>
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These [[Mac OS X Alias Files|alias files]] contain additional date and time values.
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* [http://forensics.sans.org/community/downloads/ Computer Forensics and e-Discovery downloads]
 
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[[Category:VMWare Appliances]]
Also check the following files for references to deleted .fpbf paths:
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<pre>
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/Users/$USERNAME/Library/Preferences/com.apple.finder.plist
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/Users/$USERNAME/Library/Preferences/com.apple.sidebarlists.plist
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</pre>
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Actual burning of optical media is logged in:
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<pre>
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/var/log/system.log
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/Users/$USERNAME/Library/Logs/DiscRecording.log
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/private/var/.logs_exporter/cache/Users/$USERNAME/Library/Logs/DiscRecording.log
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</pre>
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== HFS/HFS+ date and time values ==
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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]
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Converting HFS/HFS+ date and time values with Python:
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<pre>
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import datetime
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print datetime.datetime( 1904, 1, 1 ) + datetime.timedelta( seconds=0xCBDAF25B )
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</pre>
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== Quarantine event database ==
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See [http://menial.co.uk/blog/2011/06/16/mac-quarantine-event-database/]
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Snow Leopard and earlier
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<pre>
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/Users/$USER/Library/Preferences/com.apple.LaunchServices.QuarantineEvents
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</pre>
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<pre>
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SELECT datetime(LSQuarantineTimeStamp + 978307200, "unixepoch") as LSQuarantineTimeStamp, LSQuarantineAgentName, LSQuarantineOriginURLString, LSQuarantineDataURLString from LSQuarantineEvent;
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</pre>
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Lion and later
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<pre>
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/Users/$USER/Library/Preferences/com.apple.LaunchServices.QuarantineEventsV2
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</pre>
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== sleepimage ==
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This file is similar to the hibernation file on Windows.
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<pre>
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/private/var/vm/sleepimage
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</pre>
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Also see: [http://osxdaily.com/2010/10/11/sleepimage-mac/]
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== Package Files (.PKG) ==
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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].
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== Also see ==
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* [[MacOS Process Monitoring]]
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* [[Acquiring a MacOS System with Target Disk Mode]]
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* [[Converting Binary Plists]]
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* [[FileVault Disk Encryption]]
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* [[File Vault]]
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== External Links ==
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* [http://www.apple.com/macosx/ Official website]
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* [http://en.wikipedia.org/wiki/OS_X Wikipedia entry on OS X]
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* [http://menial.co.uk/blog/2011/06/16/mac-quarantine-event-database/ Quarantine event database]
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* [http://www2.tech.purdue.edu/cit/Courses/cit556/readings/MacForensicsCraiger.pdf Mac Forensics: Mac OS X and the HFS+ File System] by P. Craiger
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* [http://web.me.com/driley/iWeb/Previous_files/Directory_Services_Overview.pdf Mac OS X Directory Services Integration including Active Directory]
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* [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?]
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* [http://krypted.com/mac-os-x/command-line-alf-on-mac-os-x/ Command Line ALF on Mac OS X]
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* [http://newosxbook.com/DMG.html Demystifying the DMG File Format]
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=== Apple Examiner ===
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* [http://www.appleexaminer.com/ The Apple Examiner]
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* [http://www.appleexaminer.com/MacsAndOS/Analysis/USBOSX/USBOSX.html USB Entries on OS X]
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* [http://www.appleexaminer.com/Downloads/MacForensics.pdf Macintosh Forensics - A Guide for the Forensically Sound Examination of a Macintosh Computer] by Ryan R. Kubasiak
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[[Category:Mac OS X]]
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[[Category:Operating systems]]
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Latest revision as of 17:55, 15 June 2014

The SANS SIFT Workstation is a VMware Appliance that is preconfigured with all the necessary tools to perform a forensic examination. It is compatible with Expert Witness Format (E01), Advanced Forensic Format (AFF), and raw (dd) evidence formats.

Overview

SIFT Workstation is based on Ubuntu.

Software Includes:

  1. The Sleuth Kit
  2. ssdeep & md5deep
  3. Foremost/Scalpel
  4. Wireshark
  5. HexEditor
  6. Vinetto (thumbs.db examination)
  7. Pasco
  8. Rifiuti
  9. Volatility Framework
  10. DFLabs PTK (GUI Front-End for Sleuthkit)
  11. Autopsy (GUI Front-End for Sleuthkit)

The SIFT Workstation will allow evidence to be viewed from a Windows workstation. The /images directory and the evidence mount point, the /mnt/hack directory, can be viewed from the local Windows operating system.

Links