Offensive Security Exploit Developer (OSED/OSCP) | Red Team

The Offensive Security Exploit Developer (OSED / EXP-301) Practice Exam QCM Course is designed for experienced security practitioners who want to validate and reinforce their knowledge of advanced Windows user-mode exploit development. This course follows a structured, domain-based approach that mirrors the methodology and technical depth expected in the OSED certification exam.

Rather than focusing on step-by-step exploit development labs, this course uses exam-style multiple-choice questions to test a learner’s ability to analyze debugger output, interpret disassembly, reason about exploitability, and choose correct exploitation strategies under real-world conditions. The questions are designed to evaluate both technical understanding and decision-making, which are critical skills for exploit developers.

Each domain builds upon the previous one, progressing from crash analysis and vulnerability identification to advanced exploitation techniques involving modern Windows mitigations such as DEP and ASLR. By completing this course, learners will gain confidence in their ability to approach complex exploit development scenarios in a structured and methodical way.

Domain 1 – Windows Debugging & Crash Analysis Foundations

Focus: Understanding crashes and identifying exploitable conditions.

Covers:

• WinDbg tutorial and debugger workflow

• Intro to IDA Pro (basic usage)

• Reverse-engineering bugs (intro level)

Key skills assessed:

• Analyzing crashes using WinDbg

• Interpreting registers, stack frames, and memory structures

• Identifying vulnerable code paths

• Determining exploitability versus non-exploitable crashes

Domain 2 – Classic Stack Buffer Overflow Exploitation

Focus: Gaining control of execution flow via stack corruption.

Covers:

• Stack buffer overflow vulnerabilities

• Stack layout and memory corruption analysis

Key skills assessed:

• Offset calculation and instruction pointer (EIP) control

• Stack frame and calling convention analysis

• Crafting reliable exploit payloads

• Executing basic shellcode without modern mitigations

Domain 3 – Structured Exception Handler (SEH) Exploitation

Focus: Exploiting applications protected from direct instruction pointer overwrite.

Covers:

• Exploiting SEH overflows

• WinDbg SEH chain analysis

Key skills assessed:

• SEH and NSEH overwrite techniques

• Understanding Windows exception handling internals

• POP POP RET discovery and selection

• SafeSEH awareness and bypass logic

Domain 4 – Shellcode Development & Space-Constrained Exploitation

Focus: Payload execution under real-world limitations.

Covers:

• Shellcode development from scratch

• Overcoming space restrictions using egghunters

Key skills assessed:

• Writing position-independent shellcode

• Avoiding bad characters and restricted bytes

• Register preservation and execution stability

• Egghunter design and staged payload execution

Domain 5 – Reverse Engineering for Exploit Development

Focus: Discovering vulnerabilities through binary analysis.

Covers:

• Reverse-engineering bugs (advanced)

• IDA Pro (advanced usage and analysis techniques)

Key skills assessed:

• Identifying unsafe functions and vulnerable coding patterns

• Tracing user-controlled input through disassembly

• Understanding compiler behavior and optimizations

• Determining exploitability directly from reverse-engineered code

Domain 6 – Advanced Exploitation & Mitigation Bypass

Focus: Defeating modern Windows security protections.

Covers:

• Stack overflows with DEP and ASLR enabled

• Custom ROP chains and ROP payload decoders

• Format string specifier attacks

Key skills assessed:

• DEP and ASLR bypass strategies

• Information disclosure and memory leak techniques

• ROP chain construction and stack pivoting

• Arbitrary memory read and write using format string vulnerabilities

This course is ideal for learners preparing for the OSED (EXP-301) certification, as well as experienced penetration testers and security researchers seeking to validate their exploit development knowledge. By completing all six domains, learners will develop the analytical mindset and technical depth required to approach complex Windows exploit development challenges with confidence.

Start training smarter—test yourself like the exam expects you to think.

Disclaimer:

This course is not affiliated with, endorsed by, or sponsored by Offensive Security. OSED® and OffSec® are registered trademarks of Offensive Security.

This course is designed solely to help learners prepare for Offensive Security certifications by offering complementary knowledge and practice. No official materials or proprietary content from OffSec are used.