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All LessonsFree Lessons (4)

Introduction to the Course

Course Overview

Memory, Registers, and Simple Arithmetic

Comparison Between Memory and Registers

Assigning Numbers to Memory Locations and Registers

Adding Numbers to Memory Cells

Incrementing and Decrementing Numbers

Multiplying Numbers

Code Optimization

GDB Disassembly Output – No Optimization GDB Disassembly Output – Optimization Quiz on Memory, Register, Simple Arithmetic and Code Optimization

Number Representations

Number System Hexadecimal Number Representations

Pointers

Introduction to Pointers Assigning Numbers to Memory Using Pointers Adding Numbers Using Pointers Incrementing Numbers Using Pointers Multiplying Numbers Using Pointers Quiz on Number Representations and Pointers

Bytes, Half Words, Words, and Double Words

Granularity Memory Layout

Pointers to Memory

Declaring Pointers for Different Addressing Types Pointers Essentials Memory Pointers Example: Memory Layout

Logical Instructions and PC

Logical Instructions Zeroing Memory or Registers Instruction Pointer Quiz on Granularity, Pointer to Memory, and Logical Instructions

Reconstructing a Program with Pointers

Disassembly Output Without Optimization Reconstructing the C/C++ Code Disassembly Output in the Code Optimization Mode

Memory and Stacks

Introduction to the Stack Stack in Memory and Registers Exploring the Stack in the GDB

Frame Pointer and Local Variables

Stacks in Frame Pointers and Local Variables Functions in Frame Pointers and Local Variables Local Variables Quiz on Memory, Stack, Frame Pointer, and Local Variables

Function Parameters

Function Parameters and Stack A Disassembly Example with Function and Stack

More Instructions

Instructions-I Instructions-II

Function Pointer Parameters

Implementation of Function Parameters and Arithmetic Example Quiz on Function Parameters and Function Pointer Parameters

Conclusion

Summary of Code Final Remarks

Course Assessment

ARM64 Linux Debugging, Disassembling, Reversing Exam

Foundations of Linux ARM64: Debug, Disassemble, and Reverse/

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Multiplying Numbers

Multiplying Numbers

Learn how to multiply the contents of registers and memory cells.

We'll cover the following...

Instructions to multiply numbers

To multiply two numbers in pseudocode, we write the following:

[b] <- [b] * [a]

This means that we multiply the number at the location ...