This book provides systematic approach to reverse engineering.?reverse engineering is not about reading assembly code, but actually understanding how different pieces/components in a system work.?to reverse engineer a system is to understand how it is constructed and how it works. the book provides: coverage of x86, x64, and arm.?in the past x86as the most common architecture on the pc; however, times have changed and x64 is becoming the dominant architecture.?it brings new complexity and constructs previously not present in x86.?arm (advanced risc machine) is very common in embedded / consumer electronic devices; for example, most if not all cell phones run on arm.?all of apples i-devices run on arm.?this book will be the first book to cover all three. discussion of windows kernel-mode code (rootkits/drivers).