Book Image

Practical Windows Forensics

Book Image

Practical Windows Forensics

Overview of this book

Over the last few years, the wave of the cybercrime has risen rapidly. We have witnessed many major attacks on the governmental, military, financial, and media sectors. Tracking all these attacks and crimes requires a deep understanding of operating system operations, how to extract evident data from digital evidence, and the best usage of the digital forensic tools and techniques. Regardless of your level of experience in the field of information security in general, this book will fully introduce you to digital forensics. It will provide you with the knowledge needed to assemble different types of evidence effectively, and walk you through the various stages of the analysis process. We start by discussing the principles of the digital forensics process and move on to show you the approaches that are used to conduct analysis. We will then study various tools to perform live analysis, and go through different techniques to analyze volatile and non-volatile data.
Table of Contents (20 chapters)
Practical Windows Forensics
About the Authors
About the Reviewers

Using tcpdump

The tcpdump tool is used to collect and analyze network packets. It is ideal for the analysis of individual packages and for their consistency. In the case of automatic processing, tcpdump has several advantages.

To read a previously recorded pcap file, you can use the following command:

tcpdump -nnr dump.pcap

The default tcpdump displays information about each packet, while the output format is protocol-dependent:


[Timestamp] [Layer 3 Protocol] [Source IP].
    [Source Port]> [Destination IP]. [Destination Port]:
    [TCP Flags], [TCP Sequence Number],
    [TCP Acknowledgement Number], [TCP Windows Size] ,
    [Data Length]


[Timestamp] [Layer 3 Protocol] [Source IP].
    [Source Port]> [Destination IP]. [Destination Port]:
    [Layer 4 Protocol], [Data Length]

In addition to make the output more informative, -v -vvv can be used, as in the following example:

tcpdump -nnvvvr dump.pcap

With the -x option, you can make tcpdump output packets in the heh format...