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Hello Reader,
       Tonight we had another test kitchen, tonight with Matt Seyer and Joe Sylve. We started by talking about DFVFS and logical volume parsing. Then Matt showed how to do Python hooking to override the functionality of a DFVFS function to fix the logical volume issue with source scanner.

Our talk then took a turn with Dr. Joe Sylve coming on to talk about logical acquisitions on APFS and things got funny ... to us ... quickly. So if any of these things are interesting to you then watch below:


Hello Reader,
         Tonight we had another Test Kitchen and this one was much more successful than last nights.
Tonight we went into Matt's Pancake Viewer code, followed the functions, talked about how it worked and how it used DFVFS.

We ended the night with a demonstration of Pancake Viewer opening a E01 file and what underlying calls/functions were being made.

So if you are looking to follow along and tweak the code yourself or you just want to learn DFVFS/Python you can watch the video below:


Hello Reader,
       Well it happened, we reached daily blog 666 and as you would expect ... it all went wrong. 

In order to show how to get DFVFS running I decided to do it in a Test Kitchen live stream that you can watch below, its 2 hours. Yes it took 2 hours and some whiskey to finally go from creating an Azure account, running a Windows 10 vm to getting DFVFS installed. 

Here is the TLDR:
1. Getting Azure up and starting a new Win 10 desktop was pretty painless and fairly cheap, we will find out how cheap at the end of the month
2. I used ninite to install what I needed but it installed Python 2.7 (boo) so I had to install 3.7
3. I attempted to follow the instructions on the DFVFS build page ... don't do that. 
4. Instead  install the Microsoft Visual Studio C++ Build tools:
5. Then use matthew's script:
which will install all of the msi's for the compiled libraries
6, Then install dfvfs, you can use pip for this too
pip install dfvfs

That should do it! 
If not watch the video below and skip around to find things that could help. Next post we will work out what errors exist in the current program, get it to run and then figure out what we want to extend first.


Hello Reader,
         If you watched the last Forensic Lunch (I mean why wouldn't you have) then you know that Matt and I talked about continuing development of Matt's Pancake Viewer. Specifically Matt suggested that I take over the development.  So with that in mind I thought I would make this a blog series and likely some test kitchens.

Why? Good question!

Also I've noticed my blog posts look better on the new blog template if there is in image in it, so here we go:


What is Pancake Viewer you ask? It's Mat's Open Source GUI project that allows you to open any image file or physical disk that DFVFS supports and view its contents. It was an early experiment in learning DFVFS and Wx for Matt as well as in the long term an open source replacement for FTK Imager.

I've had several people ask to continue the Automating DFVFS series and since Pancake Viewer makes use of DFVFS it makes good sense to work on this to show what you can do with DFVFS outside of a command line quick script. You can write entire applications on top of it and Matt has some good code here that we can learn together to better take advantage of it.

We can then take that knowledge back to the Automating DFVFS series to expand whats possible.

So to start with you should grab a copy of my forked version of Matt's PancakeViewer project
https://github.com/dlcowen/PancakeViewer

I'm going to be trying VSCode this time around, I typically use Komodo when I do Python but thought I would change things around.

Looking at the readme you can see there are two dependencies. Let's install them in reverse order.

- DFVFS
  - Homepage: https://github.com/log2timeline/dfvfs
  - Wiki: https://github.com/log2timeline/dfvfs/wiki
  - How to build: https://github.com/log2timeline/dfvfs/wiki/Building
- WxPython (v3.0)
  - Homepage: https://www.wxpython.org/
  - Compiled Binaries: https://www.wxpython.org/download.php

According to WxPython's download page you can now use pip to install it on both Mac and Windows which is very handy. I was able to install it doing

pip install -U wxPython

Next we need to install DFVFS which I haven't done on this system in quite some time and I'm not sure what the state of things are. So come back tomorrow dear reader for what I'm sure is not an foreshadow of danger ..... daily blog 666 install DFVFS again.




Hello Reader,
          I hope your ready, Sunday Funday's are back and we are going to challenge you. I'm continuing the trend from last year of making the challenges a week long and with everyone home now I hope you can find a good use of some time here. So let's see what you can do and how we can help the community with your research in this weeks windows execution artifact challenge.



The Prize:
$100 Amazon Giftcard

The Rules:

  1. You must post your answer before Friday 4/10/20 7PM CST (GMT -5)
  2. The most complete answer wins
  3. You are allowed to edit your answer after posting
  4. If two answers are too similar for one to win, the one with the earlier posting time wins
  5. Be specific and be thoughtful
  6. Anonymous entries are allowed, please email them to dlcowen@gmail.com. Please state in your email if you would like to be anonymous or not if you win.
  7. In order for an anonymous winner to receive a prize they must give their name to me, but i will not release it in a blog post


The Challenge:
We've all heard of the BAM key by now, located in SYSTEM\\services\bam, but what are the limitations? Answer the following questions:
1. What types of programs are not logged in BAM?
2. Are there any paths excluded from BAM?
3. What can cause a program to no longer be listed in the BAM key?
4. When does the BAM get updated?
5. What can update the BAM timestamp?

Hello Reader,
      Next month I was supposed to be eating hot chicken with all of you in Nashville at the Magnet User Summit (MUS) but since it's still corona time this too has moved to a virtual format. The conference now called the Magnet Virtual Summit (MVS) is set for the whole month of may, it's Magnet in May!

What's even more interesting is that Magnet has decided to make MVS free for anyone who wants to virtually attend and will have a month of speakers (http://www.magnetvirtualsummit.com/speakers) a virtual CTF created by Champlain's DFA and Jessica Hyde and of course we will be doing a Forensic Lunch with the winner.

Speaking of the virtual CTF, since we are not running the CTF this year we will be joined by campaign manager extraordinaire Brian Moran in providing commentary on our YouTube channel so everyone can follow along at home. Expect expert insights, bad jokes and team nicknames to fly as we watch the scoreboard and cheer on the competitors.

So go here to register (http://www.magnetvirtualsummit.com/registration) and get ready for daily content starting May 4th through the end of May. It's great to see so many vendors making the best of the current situation and bring us something that benefits everyone.

Tomorrow, come back for Sunday Funday!

Hello Reader,
   Today we had another episode of the Forensic Lunch!

On this episode:

You can watch the show below:

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