Book Image

Learning Malware Analysis

By : Monnappa K A
5 (1)
Book Image

Learning Malware Analysis

5 (1)
By: Monnappa K A

Overview of this book

Malware analysis and memory forensics are powerful analysis and investigation techniques used in reverse engineering, digital forensics, and incident response. With adversaries becoming sophisticated and carrying out advanced malware attacks on critical infrastructures, data centers, and private and public organizations, detecting, responding to, and investigating such intrusions is critical to information security professionals. Malware analysis and memory forensics have become must-have skills to fight advanced malware, targeted attacks, and security breaches. This book teaches you the concepts, techniques, and tools to understand the behavior and characteristics of malware through malware analysis. It also teaches you techniques to investigate and hunt malware using memory forensics. This book introduces you to the basics of malware analysis, and then gradually progresses into the more advanced concepts of code analysis and memory forensics. It uses real-world malware samples, infected memory images, and visual diagrams to help you gain a better understanding of the subject and to equip you with the skills required to analyze, investigate, and respond to malware-related incidents.
Table of Contents (19 chapters)
Title Page
Copyright and Credits
Dedication
Packt Upsell
Contributors
Preface
Index

10. Structures


A structure groups different types of data together; each element of the structure is called a member. The structure members are accessed using constant offsets. To understand the concept, take a look at the following C program. The simpleStruct definition contains three member variables (ab, and c) of different data types. The main function defines the structure variable (test_stru) at ➊, and the address of the structure variable (&test_stru) is passed as the first argument at ➋ to the update function. Inside of the update function, the member variables are assigned values:

struct simpleStruct
{
  int a;
  short int b;
  char c;
};

void update(struct simpleStruct *test_stru_ptr) {
 test_stru_ptr->a = 6;
 test_stru_ptr->b = 7;
 test_stru_ptr->c = 'A';
}

int main()
{
 struct simpleStruct test_stru;  ➊  
 update(&test_stru);  ➋
 return 0;
}

In order to understand how the members of the structures are accessed, let's look at the disassembled output of the...