Difference between pages "WinFE" and "Chrome OS (CrOS)"

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{{Infobox_Software |
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{{expand}}
  name = Windows Forensic Environment |
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  maintainer = [[Windows Forensic Environment Project]] |
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  os = {{Windows}} |
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  genre = {{Live CD}} |
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  license = unknown |
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  website = http://winfe.wordpress.com |
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}}
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Chromium OS (or Chrome OS, or CrOS) is an open-source project that aims to build an operating system that provides a fast, simple, and more secure computing experience for people who spend most of their time on the web.[http://dev.chromium.org/chromium-os]
  
'''Windows Forensic Environment''' - a forensically sound bootable CD/USB to acquire electronic media or conduct forensic analysis.
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== External Links ==
                                             
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* [http://dev.chromium.org/chromium-os Chromium OS]
== Windows Forensic Environment ("WinFE") ==
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* [http://dev.chromium.org/chromium-os/chromiumos-design-docs/disk-format Disk Format]
  
WinFE was developed and researched in 2008 by Troy Larson, Sr Forensic Examiner and Research at Microsoft [http://www.twine.com/item/113421dk0-g99/windows-fe].  WinFE is based off the Windows Pre-installation Environment of media being Read Only by default.
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[[Category:Operating systems]]
It works similar to Linux forensic CDs that are configured not to mount media upon booting. 
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However, unlike Linux boot CDs, with Win FE one can use Windows based software. Thus it is possible to include various forensic software and general portable utilities.
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WinFE can also be configured to boot from a USB device, should the evidence computer have the ability to boot to USB.
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WinFE can be customized to the examiner's needs through batch files using the Windows Automated Install Kit (WAIK) or through 3rd party utilities such as WinBuilder [http://reboot.pro].
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Some examples of Windows based forensic utilities that can run in the Windows Forensic Environment include:
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* X-Ways Forensics [http://www.x-ways.net],
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* AccessData FTK Imager [http://www.accessdata.com],
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* Guidance Software Encase [http://www.guidancesoftware.com],
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* ProDiscover [http://www.techpathways.net],
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* RegRipper [http://www.RegRipper.wordpress.com].
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A write protection tool developed by Colin Ramsden was released in 2012 that provides a GUI for disk toggling [http://www.ramsdens.org.uk/].  Colin Ramsden's write protect tool effectively replaces the command line to toggle disks on/offline or readonly/readwrite.
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== Technical Background and Forensic Soundness ==
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Windows FE is based on the modification of just two entries in the Windows Registry.
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The first key is located at "HKEY_LOCAL_MACHINE\system\ControlSet001\Services\MountMgr". The DWord "NoAutoMount" has to be set to "1".
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By doing this the Mount-Manager service will not automatically mount any storage device.
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The second key is "HKEY_LOCAL_MACHINE\system\ControlSet001\Services\partmgr\Parameters" where "SanPolicy" has to be set to "3".
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While both keys will avoid the mounting of storage devices the user has to mount the storage drive manually by using the command-line tool DiskPart, while the evidence drive does not need to be mounted for imaging/forensic access.
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The latest modification (New for Windows 8) to the registry is SAN policy 4.  SAN policy 4 Makes internal disks offline. Note. All external disks and the boot disk are online.
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Testing has shown that mounting a '''volume''' in READ ONLY mode will write a controlling code to the disk, whereas mounting a '''disk''' in READ ONLY mode will not make any changes.  Depending on the type of filesystem there is a potential modification to the disk with a documented 4-byte change to non-user created data. This modification exists for non-Windows OS disks, where Windows (FE) will write a Windows drive signature to the disk, although it is not shown to be consistent.  Various issues with Linux Boot CDs can be compared [http://www.forensicswiki.org/wiki/Forensic_Linux_Live_CD_issues] ).
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== Resources: ==
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* Windows Forensic Environment blog:  [http://www.winfe.wordpress.com]
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* Article on Win FE in Hakin9 magazine 2009-06 [http://hakin9.org]
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* step-by-step Video to create a Win FE CD [http://www.youtube.com/v/J3T5wnPiObI]
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* WinPE Technical Reference: [http://technet.microsoft.com/en-us/library/dd744322(WS.10).aspx]
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* Windows Automated Installation Kit:  [http://www.microsoft.com/downloads/details.aspx?familyid=696DD665-9F76-4177-A811-39C26D3B3B34&displaylang=en]
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* WinFE Write Protect tool [http://www.ramsdens.org.uk/]
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* WinFE Online Training course [http://courses.dfironlinetraining.com/windows-forensic-environment]
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Revision as of 05:28, 30 June 2014

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Chromium OS (or Chrome OS, or CrOS) is an open-source project that aims to build an operating system that provides a fast, simple, and more secure computing experience for people who spend most of their time on the web.[1]

External Links