You're reading from Mastering Malware Analysis - Second Edition

Product typeBook

Published inSep 2022

PublisherPackt

ISBN-139781803240244

Edition2nd Edition

Concepts

Malware Analysis

Authors (2):

Alexey Kleymenov

Amr Thabet

View More author details

File formats and APIs

Knowing about file formats and their structure is important for static analysis, as it becomes possible to know exactly where to search for particular artifacts of interest. In terms of dynamic analysis, knowledge about the structure is particularly useful, as this way, we know how to run the sample properly and the order in which the code is going to be executed, so we won’t miss an important part of the functionality.

Mach-O

This format is the main executable format on macOS and iOS operating systems. It has pretty much the same role as PE on Windows or ELF on Linux-based systems. It is also used to store object code, shared libraries, and core dumps. There are two types of these files: thin and fat.

Thin

This is the most common type of Mach-O file. It is composed of the following parts:

A header: Contains general information about the file. Here is its structure according to the official source code:
```
struct mach_header {
  ...
```

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Mastering Malware Analysis - Second Edition

Published in: Sep 2022Publisher: PacktISBN-13: 9781803240244

Authors (2)

Alexey Kleymenov

Alexey Kleymenov started working in the information security industry in his second year at university and now has more than 14 years of practical experience at several international cybersecurity companies. He is a malware analyst and software developer who is passionate about reverse engineering, automation, and research. Alexey has taken part in numerous investigations analyzing all types of malicious samples, has developed various systems to perform threat intelligence activities in the IT, OT, and IoT sectors, and has authored several patents. Alexey is a member of the (ISC)² organization and holds the CISSP certification. Finally, he is a founder of the RE and More project, teaching people all over the world how to perform malware analysis in the most efficient way.
Read more about Alexey Kleymenov

Amr Thabet

Amr Thabet is a malware researcher and an incident handler with over 10 years of experience. He has worked in several Fortune 500 companies, including Symantec and Tenable. Currently, he is the founder of MalTrak, providing real-world in-depth training in malware analysis, incident response, threat hunting, and red teaming to help the next generation of cybersecurity enthusiasts to build their careers in cybersecurity. Amr is also a speaker and trainer at some of the top security conferences all around the world, including Blackhat, DEFCON, Hack In Paris, and VB Conference. He was also featured in Christian Science Monitor for his work on Stuxnet.
Read more about Amr Thabet

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