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Learning Linux Binary Analysis

Learning Linux Binary Analysis

By : "elfmaster" O'Neill
4.8 (10)
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Learning Linux Binary Analysis

Learning Linux Binary Analysis

4.8 (10)
By: "elfmaster" O'Neill

Overview of this book

Learning Linux Binary Analysis is packed with knowledge and code that will teach you the inner workings of the ELF format, and the methods used by hackers and security analysts for virus analysis, binary patching, software protection and more. This book will start by taking you through UNIX/Linux object utilities, and will move on to teaching you all about the ELF specimen. You will learn about process tracing, and will explore the different types of Linux and UNIX viruses, and how you can make use of ELF Virus Technology to deal with them. The latter half of the book discusses the usage of Kprobe instrumentation for kernel hacking, code patching, and debugging. You will discover how to detect and disinfect kernel-mode rootkits, and move on to analyze static code. Finally, you will be walked through complex userspace memory infection analysis. This book will lead you into territory that is uncharted even by some experts; right into the world of the computer hacker.
Table of Contents (11 chapters)
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10
Index

Process memory viruses and rootkits – remote code injection techniques


Up until now, we've covered the fundamentals of infecting ELF binaries with parasite code, which is enough to keep you busy for at least several months of coding and experimentation. This chapter would not be complete, though, without a thorough discussion of infecting process memory. As we've learned, a program in memory is not much different than it is on disk, and we can access and manipulate a running program with the ptrace system call, as shown in Chapter 3, Linux Process Tracing. Process infections are a lot more stealthy than binary infections, since they don't modify anything on disk. Therefore, process memory infections are usually an attempt at defeating forensic analysis. All of the ELF infection points that we just discussed are relevant to process infection, although injecting actual parasite code is done differently than it is with an ELF binary. Since it is in memory, we must get the parasite code into...

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