As I mentioned in my last post, Brett Shavers is offering a free course on the Windows Forensic Environment (WinFE). If you've never heard of WinFE, it's a Windows Forensic boot CD and it's highly customizable for your individual needs. In the past, the build process was a bit cumbersome, but several different improved ways of building it have since been created. Brett has been a champion of WinFE for quite a while now, so I was sure his course would be very good. I signed up as soon as I first learned about the it and completed it in a few days. It could be done all in one day, but I preferred splitting it up a little.
The Windows Forensic Environment course covers the history, building and usage of WinFE. The course consists of 30 modules, including 27 video lessons, a wrap-up video, a qualification exam and a course downloads page. The vast majority of the videos are done by Brett himself, while a couple videos by others are included as well. All of the videos are short enough that you can sit down and watch a few without spending your whole day at it. Registration is easy enough, either by creating a new account through skilljar.com or signing in with your Google or Facebook account.
The course begins with a brief introduction to WinFE and its history. Something I really liked was Brett starts out from the beginning making it clear what WinFE is and what it's good for, as well as talking about when it might not be the best choice. He talks about potential pitfalls when using it along with ways you can screw up by not using it right (accidentally boot the evidence drive, etc).
After the introductory section, Brett covers when it's a good idea to use a boot cd and suggests other times when you're better off just removing the evidence hard drive and imaging through a hardware write blocker. As he points out, if you've got all the time you need and have no reason to boot the machine on-site, you may as well remove the hard drive in the lab and do things the "traditional" way.
An overview of forensic boot systems is next. WinFE and various Linux forensic boot CD's are talked about and compared. I like that Brett doesn't tell you that WinFE is the answer to all your needs and that you'll never need Linux. Rather, he says right up front that sometimes WinFE isn't going to work for you for some reason and a Linux boot CD might be your best option. He suggests having both available when you go on-site so you're ready for any situation.
WinFE development is next, followed by the use of DiskPart and the WinFE Write Protection Tool. Demonstrations are given of DiskPart and the Write Protection Tool after the lecture on each. Following this, he talks about the importance of tool validation and that you must validate tools yourself and not simply rely on the word of others.
One of the cool things about WinFE is that there are multiple ways you can build your own. Some are a bit cumbersome, while others are strikingly easy. Brett covers them all and demonstrates how to use each method to build your own version of WinFE. Two of the videos in this section were created by other people, while Brett takes care of the remainder.
Next up, quite a few different use cases are presented for WinFE. Suggestions for each of those use cases are given and some other tips are given at the end of this section.
After the wrap-up, you get your chance to take the course exam. The exam consists of 25 questions and you must score an 80% or above to pass. You get two chances to take it, so if things don't go well the first time, you can still take another shot at it. I'm happy to say I passed on the first try.
The final section of the course is a downloads page. Links to lots of different WinFE related materials are here, including materials referenced throughout the course.
I was very pleased with this course. I thought Brett did a great job presenting the material. He speaks with the voice of experience and you can tell the suggestions he makes throughout the course are taken from his own use of WinFE. This course is free, but it is definitely worth paying for.
Speaking of which, Brett has also come out with another course that does cost a little money. This course is titled the X-Ways Forensics Practitioners Guide Online Course. As you may know, Brett and Eric Zimmerman wrote the book of the same name. The course costs $195, but if you sign up before July 17 and use discount code xwf1, you'll get a 25% discount. Not only that, but if you sign up before the 17th, you'll also get part 2 of the course for free! I hope to come up with some cash and take these courses, as I've been an X-Ways user for over 4 years. I learned a lot from the book and I'm sure the class will be good as well.