Online Courses and Self Study may lack in
practical experiences, so- We provide Practical Summer Trainings to our
Students in special batches / workshops. This course provides an
introduction to the field of Forensic Sciences and allied subjects /
branches; we also provide optional hands-on practical experience using
state-of-the-art landscape analysis tools.
So here is the scenario (BTW, it's a real scenario). Local police detectives have responded to the scene of a homicide. During their investigation they have discovered that there is a CCTV system that may have caught the entire event on video. Being conscious of preserving the data, they called the security company responsible for installing the CCTV system, who promptly responded and shut down the CCTV system. The technician pulled the hard drive out and gave it to the detectives, who has now given it to you with one simple request: "find the evidence". They want you to extract the videos so they can review them to see if it is useful in helping solve the case. Sounds simple eh?
Being the energetic examiner that you are, you quickly image the hard drive and begin an initial analysis. Once imaged, you load the image into EnCase and see a single 100GB FAT32 volume containing hundreds of files in the root directory of the volume. There are no subdirectories (other than some file system generated directories that contain no data). Information about the volume looks like this:
The files in the root directory look like this:
The video data from each day is
recorded and stored in one or multiple files depending on the amount of
data recorded. Each file has the extension of "XBA". The file header
looks like this:
You
then export several files out to your local working drive and attempt to
view them using a freely available video viewer. Each attempt to view
fails and the viewer reports the file is corrupted. A quick look at the
exported files show they are each 32,768 bytes in length, even though
EnCase reports a different size for each file you exported.
Ideas?..........Let
the questions begin... please use the comment function below so
everyone can benefit from questions and answers already given.