Calls, Strings and Codes

Learn how to do basic input and output, work with strings and condition codes at the x86 Assembly level. Then try your hand at your first project by building your own x86 Assembly program.

4 videos  //  76 minutes of training

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Course description

In this course, we’ll learn how to do basic input and output (i/o) operations at the assembly level, including how to store and work with strings. Then you’ll try your hand at your first project of building an application written entirely in x86 Assembly. Finally, we’ll look at condition codes and how the x86 processor handles tracking the state of certain processor conditions.

Course syllabus

Input and Output: x86 System CallsDuration: 18:41

This video covers basic I/O operations and how we can leverage the operating system at the assembly level to perform these tasks.

LAB: Hello World! Creating the Usual Hello World in x86Duration: 19:36

This project will guide you through building an application written entirely in x86 Assembly.

Strings/ASCII: How to Work with Strings and ASCII in x86Duration: 7:42

This video covers the concept of strings and how they are used and stored in x86 Assembly.

Condition Codes: How x86 Handles Condition Codes Generated by the CPU and Why They MatterDuration: 30:01

This video covers conditional codes that are used to store state on the processor CPU. We'll look at what the different codes mean and how to affect their state.

Meet the author

Stephanie Domas

LinkedIn

Stephanie Domas is Executive Vice President at MedSec. In this role, she leads the development of cybersecurity products and services to support medical device manufacturers on design, architecture, security risk management, regulatory filings, penetration testing and execution of security best practices in the development of medical devices, as well as vulnerability and asset management of connected medical devices in hospitals.

Mrs. Domas has spent 10+ years doing security research at the x86 level. She is emphatic that whether your goal is to be a better developer, security researcher or reverse engineer, a knowledge of assembly is crucial. She is passionate about spreading the joy of x86 and routinely teaches trainings and speaks on x86 assembly at security events such as Blackhat, Defcon and Derbycon.

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