Introduction to Low Level Computing - Ocsaly Academy

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Introduction to Computers and Their Working Process

How Computers Communicate: CPU, Memory, and Input/Output Explained
Preparing Development Environment
What Happens When You Use a Computer

Computer Arithmetic 101

How Addition Happens in Decimal
Addition Arithmetic in Unsignet Integers
Substraction in Decimal
Substraction Arithmetic in Unsigned Integers
Substraction Arithmetic in Signed Integers

Boolean Algebra 101

Boolean Algebra for Low Level Computing

Computer Electronics 101

Introduction to Electronics for Hardware Engineers
Logic Gates and Their Hardware Implementation
Capacitors and Implementations on Circuits
Why Use Inductors on Motherboards
Power Consumption and Transistors
MOSFET Transistors
CMOS Switches in Modern CPUs

Combinational Logic Circuits

Introduction to Logic Circuits
Full Adders
NAND and NOR Gates

Introduction to Ghidra

Understanding How Ghidra Works and Other Important Steps
Ghidra Analyzers and User Interface
Customizing Ghidra and Graphs
Getting Familiar with Ghidra Top Menu Bar

Introduction to Low Level Computing

Introduction to Low Level Computing
From Characters to Bits
Creating Our Instruction Set Architecture CPU

Introduction to Reverse Engineering

Reverse Engineering & Malware Analysis
5 Important Steps in Reverse Engineering and Malware Analysis
Virtualization Environment for Our Work
Using Built-in Tools for System Analysis

Assembly Language

Registers
Flags
Memory Addressing and Endianness
Read and Understand Assembly
Opcodes
Manipulating Memory

Second Part of Lecture : Advanced Topics in Low-Level Computing and Reverse Engineering

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In this lecture, you will learn the fundamentals of low-level computing, focusing on how computers execute instructions at the hardware level. We will explore concepts such as machine code, assembly language, and how these interact directly with the CPU and memory. This knowledge is essential for understanding system architecture, operating systems, and reverse engineering.

Discard the noise of entry-level theory. We build labs that actually break things, taught by operators who have lived in the trenches. Ocsaly is defined by zero-day logic, forensic precision, and tradecraft that survives a real-world engagement.

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