Linux Forensics will guide you step by step through the process of investigating a computer running Linux. Everything you need to know from the moment you receive the call from someone who thinks they have been attacked until the final report is written is covered. All of the tools discussed in this course are free and most are also open source.
– Dr. Philip Polstra
Instructor, Linux Forensics and USB Forensics
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1. What is the Linux Forensics course about?
This course will familiarize students with all aspects of Linux forensics. By the end of this course students will be able to perform live analysis, capture volatile data, make images of media, analyze filesystems, analyze network traffic, analyze files, perform memory analysis, and analyze malware all on a Linux system with readily available free and open source tools.
Students will also gain an in-depth understanding of how Linux works under the covers.
The Linux Forensics course covers all the topics in the best-selling book “Linux Forensics” by Dr. Philip Polstra and much more. Dr. Philip Polstra shows how to leverage numerous tools such as Python, shell scripting, and MySQL to quickly, easily, and accurately analyze Linux systems. Linux Forensics begins by showing you how to determine if there was an incident with minimally invasive techniques. Once it appears likely that an incident has occurred, Dr. Polstra shows you how to collect data from a live system before shutting it down for the creation of filesystem images. Linux Forensics contains extensive coverage of Linux ext2, ext3, and ext4 filesystems. A large collection of Python and shell scripts for creating, mounting, and analyzing filesystem images are presented in this book. Dr. Polstra introduces readers to the exciting new field of memory analysis using the Volatility framework among other things. Please refer to the next section for the topics covered.
2. Course Syllabus
A non-exhaustive list of topics to be covered include:
- Live response
- First talk to the humans
- What do they think happened
- Details on victim system(s)
- Mount response kit with known good tools
- Cdrom preferred as it was not likely part of compromise
- USB MS can be used if no CDROM
- Using netcat to minimize contamination
- Collecting volatile data
- Date and time
- Network interfaces
- Funny networks
- Promiscuous mode?
- Network connections
- Open ports
- Programs associated with ports
- Running processes
- Open files
- Routing tables
- Mounted filesystems
- Loaded kernel modules
- Collecting data to determine if dead analysis is justified
- Kernel version
- Uptime
- Filesystem datetime stamps
- Hash values for system files
- Current user logins
- Login history
- System logs
- User accounts
- User history files
- Hidden files and directories
- Sending off suspicious files for further study
- Dumping RAM
- Making the decision to dump RAM
- Using fmem
- Using LiME
- Using /proc/kcore
- First talk to the humans
- Acquiring filesystem images
- Using dd
- Using dcfldd
- Write blocking options
- Forensic Linux distros
- Udev rules based blocker
- Analyzing filesystem images
- Mounting images
- Files with basic system info
- Files with suspicious user info
- Examining logs
- Process-related files
- Authentication-related files
- Using standard Linux tools to find information
- Strange files
- Regular files in /dev
- User history files
- Hidden files
- SUID/SGID files
- Detecting backdated files
- Recovering deleted files
- Finding deleted files
- Attempting recovery
- Leveraging The Sleuth Kit (TSK) and Autopsy
- Mmls
- Fsstat
- Dstat
- Istat
- Fls & mactime
- Mounting images
- Timeline Analysis
- When was system installed, upgraded, booted, etc.
- Newly created files (malware)
- Changed files (trojans)
- Files in the wrong place (exfiltration)
- Digging deeper into Linux filesystems
- Disk editors
- Active@ Disk Editor
- Autopsy
- ExtX
- Basics
- Superblocks
- Directory entries
- Inodes
- Data blocks
- Compatible, incompatible, and read-only compatible features
- Experimental features may be installed
- Boot code
- Using sigfind to find important blocks
- Understanding indirect block levels
- istat, ils, ifind, icat
- Links and mounts
- Hash trees
- Journaling
- Jls
- Jcat
- Finding data with blkstat, blkls, blkfind, blkid, and blkcalc
- Relating data found with grep to a file/application
- Finding block size, etc.
- Using grep with a keyword file
- Seeing data in context
- Associating a file with the data
- Undeleting files
- Searching unallocated space
- Basics
- Disk editors
- Network forensics
- Using snort on packet captures
- Using tcpstat
- Seperating conversations with tcpflow
- Tracing backdoors with tcpflow
- File forensics
- Using file signatures
- Searching through swap space
- Web browsing reconstruction
- Cookies
- Search history
- Browser caches
- Unknown files
- Comparing hashes to know values
- File command
- Strings command
- Viewing symbols with nm
- Reading ELF files
- Objdump
- Bringing out big guns – gdb
- Memory Forensics
- Volatility Profiles
- Retrieving process information
- Recovering command line arguments
- Rebuilding environment variables
- Listing open files
- Retrieving bash information
- Reconstructing network artifacts
- Kernel information
- Volatile file system information
- Detecting user mode rootkits
- Detecting kernel rootkits
- Reversing Linux Malware
- Digging deeper into ELF
- Headers
- Sections
- Strings
- Symbol tables
- Program headers
- Program loading
- Dynamic linking
- Command line analysis tools
- Strings
- Strace
- Ltrace
- Running malware (carefully)
- Virtual machine setup
- Capturing network traffic
- Leveraging gdb
- Digging deeper into ELF
- Writing the reports
- Autopsy
- Dradis
- OpenOffice
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3. Can I see some sample videos for the course?
The total duration of the course videos is a staggering 12+ HOURS of HD content. The course is fully hands-on and you will be spending most of the time doing exercises with the instructor.
The course starts from the very basics and slowly takes you to more complicated topics, making it ideal for self-paced learning. Below are a couple of sample videos from the course:
1. Linux Forensics: Course Introduction
2. Creating a Linux Forensics USB drive Part 1
3. Live analysis part4 dumping RAM with LiME
4. Software write blocking with udev rules
6. Mounting an image part2 using python to mount mbr based images
7. Inodes part2 using Python to find inodes that are out of place
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4. What do I get as a registered student?
A registered student will get the following:
- HD Download of Course Theory Videos
- HD Download of Course Exercise Videos
- PDF Slides of the full course
- All Code samples used in the course
- Certification Exam
- PDF copy of certificate if you pass the exam
Please note that there is no student forum associated with this low-priced course.
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5. What is the course duration? when does it start / stop ?
The Linux Forensics course is completely self-paced, self-study course. There is no duration of the course or expiry period.
6. Student Testimonials from our existing Certifications
SecurityTube Certifications are currently taken by students from over 90+ countries around the world! Here is what our students have to say about us:
I found the SecurityTube Linux Assembly Expert course to be unique as it challenges the trainee to research and write implementations himself rather than just learning a book. This is also reflected by the exam which requires the user to go hands and which, in my opinion, tests the skills of the user a lot better than a multiple choice exam can. I also liked the fact there weren’t any time constraints on when to take the exam, which made it infinitely easier to plan in with regards to my job. The fact you also get a complete GDB course as an extra is a real bonus (Vivek wants to make sure you really know how to use your basic tools). The best part of the SLAE was the price, there are little other trainings of the same quality with the same price.
– Lucas KauffmanIT
Security Advisor
Ernst & Young
After having done my homework on reviewing numerous other online courses covering the subject matter that I wanted to study, I finally chose to settle on taking the SecurityTube Linux Assembly Expert course. I can now confidently state that I was very satisfied with my choice. I was not a novice assembly programmer going into the course, but given the level of confidence and clarity that Vivek had in teaching the material I am positive that even beginners would be able to follow along just fine. I myself feel like I have now gained a deeper appreciation for the subtle nuances of assembly programming in the information security field. My warmest thanks to Vivek and the staff at SecurityTube for all their detailed time spent on teaching this course.
– Thanesh Gopal
Software Engineer
Ottawa, Canada
The SecurityTube Linux Assembly Expert course is one of the few courses that I recommend to everyone I meet. Not only is it well put together and comprehensive, the materials are expansive without degrading quality. I’ve been writing shellcode for ten years now, and Vivek still managed to teach me ways of doing things I’d never thought of before. The SLAE course and certification require proof of knowledge that other courses miss, and anyone who has passed it has my utmost respect.
– Jason Spalding
Senior Systems and Security Engineer
Education, Government
7. Why Choose SecurityTube Certifications?
Our Certifications are taken by students from over 90+ countries and are Globally recognized. The Flags in the image to the left are countries from where our students belong. In addition, SecurityTube Certifications provide:
- High Quality Content at an Affordable Cost
- The most Comprehensive Course Coverage in the Industry
- Uses Open Content for Course Evaluation
- Concept Oriented, Practical Content rather than only Theory
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8. Course Instructor
Dr. Philip Polstra (Dr. Phil) has been involved with technology since an early age. He and one of his brothers cleaned out their savings to purchase a TI-99/4a computer in the early 80’s, much to the chagrin of his parents. He has been tinkering with computers and electronics ever since.
Phil is an internationally recognized hardware hacker and information security expert. He has made repeat appearances at several of the top conferences worldwide. Here are just a few of the conferences he has spoken at: DEFCON (six times in four years), Blackhat, 44CON, GrrCON, BruCon, ForenSecure, SecTOR, c0c0n, Shakacon, B-sides Detroit, and B-sides Iowa. His work on developing small affordable hacking devices is documented in the book “Hacking and Penetration Testing with Low Power Devices”. He is also known for his work on USB hacking and forensics. Phil has published several articles on USB-related topics.
Phil is an Associate Professor in the department of Math, Computer Science, and Statistics at Bloomsburg University of Pennsylvania where he teaches Digital Forensics. His current research focus is on developing ultra-low-power hacking hardware. Phil also performs security penetration tests and forensic investigations on a consulting basis. His book “Linux Forensics” is considered a must have by a number of people in the forensics and information security community.
In addition to in-person training, consulting, presenting at conferences, and running conference workshops, Phil has also produced hundreds of instructional videos. His video courses are available at PentesterAcademy.com, PluralSight, O’Reilly, udemy.com, and elsewhere.
When not teaching, Phil enjoys spending time with his family, tinkering with electronics, attending infosec conferences, experimenting with software defined radio (SDR) and various aviation activities. Phil is an accomplished aviator with a dozen ratings, all of which are current. Phil’s ratings include Commercial Pilot, Flight Instructor, Airframe and Powerplant Mechanic, Aircraft Inspector, and Avionics Technician. His flight hours are measured in the thousands and he has been known to build aircraft.
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