Course

Debugging

Learn how to debug at the assembly level and how to recover the assembly code from already-built binaries. Practice identifying common assembly fault conditions, then finish with a debugging project.

    Syllabus

  • Debugging: Debugging Your First x86 Program with GDB Video — 00:24:10
    • This video introduces debugging at the x86 Assembly level using GDB.

  • ObjDump: How to Use the Tool ObjDump with x86 Video — 00:02:43
    • This video shows how to extract assembly code from an already-built binary, regardless of who built it or what language it was originally written in.

  • Segmentation Faults: How to Diagnose and Locate Segmentation Faults in x86 Video — 00:04:21
    • This video talks through the most frequent fault that occurs when writing assembly, how to detect it and fix it.

  • LAB: x86 Debugging: Lab to Debug an x86 Program Video — 00:07:02
    • This project will guide you through debugging at the x86 level, plus techniques for locating and fixing bugs.

Syllabus

Course description

In this course, we’ll learn the ins and outs of debugging at the assembly level. In addition, we’ll discuss how to recover the assembly code from an already-built application (regardless of what language it was originally built in). We’ll continue by diving into the most common x86 faults you’ll encounter while writing assembly and how to recognize and fix them. Finally, we round out with a debugging project.

Meet the author

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, knowledge of assembly is crucial. She is passionate about spreading the joy of x86 and routinely teaches training and speaks on x86 assembly at security events such as Blackhat, Defcon and Derbycon.

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