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Debugging, Disassembly & Reversing in Linux for x64 Architecture

Gain insights into using GDB for debugging in Linux. Explore disassembly, memory investigation, and register updates. Learn about pointers, stack, and function parameters in x64 architecture.

Intermediate

43 Lessons

16h

Certificate of Completion

Gain insights into using GDB for debugging in Linux. Explore disassembly, memory investigation, and register updates. Learn about pointers, stack, and function parameters in x64 architecture.

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Explanations

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Explanations

This course includes

1 Assessment

14 Playgrounds

5 Quizzes

Course Overview

What You'll Learn

Course Content

Course Overview

GNU Debugger (GDB) is used for debugging C/C++ programs in LINUX/UNIX environments. It is a good tool to investigate what is happening inside a program, and how the contents inside the memory are changed with the execution of the program. The main focus of the course is the disassembly of the program, where we'll use simple operations in C. With the help of GDB, we'll examine the contents of the registers and memory. We'll also learn how they are changed while executing basic operations. We’ll then explore...Show More

GNU Debugger (GDB) is used for debugging C/C++ programs in LINUX/UNIX environments. It is a good tool to investigate what is hap...Show More

What You'll Learn

A familiarity with disassembly in GDB environment of simple C/C++ programs

A good understanding of how to debug programs with a cross-sectional view to the contents of registers, stack and memory

The ability to use GDB as a dump analysis tool

Hands-on experience with C/C++ programs from the disassembly output

A familiarity with disassembly in GDB environment of simple C/C++ programs

Course Content

Introduction to the Course

1 Lessons

Get familiar with GDB for debugging, disassembly, and program reconstruction in Linux.

Introduction

Memory, Registers, and Simple Arithmetic

5 Lessons

Grasp the fundamentals of memory, registers, arithmetic operations, and their representations in assembly language.

Comparison Between Memory and Registers

Assigning Numbers to Memory and Register

Adding Numbers to Memory Cells

Incrementing and Decrementing Numbers

Multiplying Numbers

Code Optimization

3 Lessons

Go hands-on with debugging and optimizing code using GDB to enhance performance.

GDB Disassembly Output—No Optimization

GDB Disassembly Output—Optimization

Quiz on Memory, Register, and Code Optimization

Number Representations

2 Lessons

Grasp the fundamentals of number systems, including decimal, ternary, binary, and hexadecimal.

Number System

Hexadecimal Number Representations

Pointers

6 Lessons

Solve problems in using pointers for memory manipulation, arithmetic, incrementation, and multiplication in programming.

Introduction to Pointers

Assigning Numbers to Memory Cells Using Pointers

Adding Numbers Using Pointers

Incrementing Numbers Using Pointers

Multiplying Numbers Using Pointers

Quiz on Number Representations and Pointers

Bytes, Words, Double, and Quad Words

2 Lessons

Investigate memory granularity and layout in x64 Linux, focusing on bytes to quadwords.

Granularity

Memory Layout

Pointers to Memory

3 Lessons

Practice using pointers, their types, initialization, and debugging in memory management.

Declaring Pointers for Different Addressing Types

Pointers Essential

Memory Pointers Project: Memory Layout

Logical Instructions and RIP

4 Lessons

Step through logical instructions, zeroing techniques, and the role of the Instruction Pointer.

Logical Instructions

Zeroing Memory or Registers

Instruction Pointer

Quiz on Granularity, Pointer to Memory, and Logical Instructions

Reconstructing a Program with Pointers

3 Lessons

Unpack the core of disassembling, reconstructing, and optimizing C/C++ code with pointers.

Disassembly Output Without Optimization

Reconstructing C/C++ Code

Disassembly Output in Code Optimization Mode

10.

Memory and Stacks

3 Lessons

Go hands-on with stacks in memory, function calls, and GDB debugging techniques.

Introduction to Stack

Stack in Memory and Registers

Exploring Stack in GDB

11.

Frame Pointer and Local Variables

4 Lessons

Break down the steps to understand stack functionality, function prolog/epilog, 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

12.

Function Parameters

2 Lessons

Solve problems in function parameter passing and stack memory analysis in x64 Linux systems.

Function and Stack

A Disassembly Project with Function and Stack

13.

More Instructions

2 Lessons

Simplify complex topics of CPU flags, conditional jumps, and assembly instructions.

Instructions I

Instructions II

14.

Function Pointer Parameters

2 Lessons

Practice using function pointers in projects, dissembling with GDB, and enhancing debugging skills.

Implementation of Project

Quiz on Function Parameters and Function Pointer Parameters

15.

Summary of Code Disassembly Patterns

1 Lessons

Break down key concepts in debugging, disassembly, and reversing for x64 Linux.

Summary of Code

x64 Debugging, Disassembly & Reversing Exam

Assessment

Course Author

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