CATALOGUECOURSESOffSec Exploit Developer (OSED)
    Cyber Security Certification
    [ cyber ]

    "The OffSec Exploit Developer, or OSED, is an advanced cybersecurity certification focusing on Windows user-mode exploit development. It equips professionals with the critical skills needed to reverse engineer binaries, bypass modern exploit mitigations like DEP and ASLR, and craft custom shellcode. Recognized industry-wide and integrated into the Security Career Navigator framework, this rigorous credential prepares security researchers and penetration testers for high-tier offensive security roles, validating their ability to discover and weaponize critical software vulnerabilities."

    The OffSec Exploit Developer (OSED) is an elite, professional-level certification and training program (EXP-301) designed to forge advanced exploit developers and reverse engineers. This highly clinical and intelligence-grade curriculum focuses extensively on Windows user-mode exploit development. Candidates are trained to systematically deconstruct compiled binaries, identify intricate memory corruption vulnerabilities, and weaponize them into reliable exploits. The course mandates deep technical proficiency in x86 assembly, reverse engineering, and the creation of custom shellcode. Furthermore, it rigorously trains practitioners in modern defensive evasion, specifically engineering complex Return-Oriented Programming (ROP) chains to bypass Data Execution Prevention (DEP) and leveraging memory leaks to defeat Address Space Layout Randomization (ASLR). Designed for senior penetration testers, malware analysts, and vulnerability researchers, the OSED credential validates the capability to independently discover and exploit zero-day vulnerabilities in a highly restricted, modern operating system environment, significantly elevating a practitioner's standing within the cybersecurity industry.

    [01] Verify Your Readiness

    Deploy into hands-on sandbox simulations mapped directly to OffSec Exploit Developer (OSED) objectives. Verify your readiness under real-world conditions:

    [ SYSTEM_NOTICE ] No simulations currently indexed for this credential.

    [ EDITORIAL_INDEPENDENCE_NOTICE ]

    SecNav is not a commercial partner for this course. We do not receive compensation, referral commissions, or affiliate fees from OffSec for indexing this credential. We map this path purely for its educational merit and alignment with career progression.

    PROVIDER_INTEL

    [02] Skills Validated by This Certification

    The OffSec Exploit Developer (OSED) curriculum tests and measures critical capabilities across these essential cybersecurity & threat defense skills. Explore the dedicated skills nodes below:

    [03] Career Pathways & Target Roles

    Securing a verified status in OffSec Exploit Developer (OSED) is a high-value accelerator for major cyber defense career paths. Learn more about the primary roles mapping to this pathway:

    No linked career roles in telemetry

    [04] Frequently Asked Questions about OffSec Exploit Developer (OSED)

    Candidates must possess a solid foundation in reading and writing C/C++ code, a strong understanding of 32-bit assembly language (x86), and familiarity with debuggers such as WinDbg or Immunity Debugger. Prior completion of the OSCP (OffSec Certified Professional) is highly recommended to ensure foundational offensive security proficiency.
    The course focuses heavily on defeating modern Windows execution mitigations. Specifically, it trains candidates to bypass Data Execution Prevention (DEP) using advanced Return-Oriented Programming (ROP) chains, and to defeat Address Space Layout Randomization (ASLR) by identifying and leveraging memory leaks.
    The OSED exam is a rigorous 48-hour practical assessment where candidates must independently develop custom exploits for unknown, vulnerable applications. Following the technical execution phase, candidates are given an additional 24 hours to submit a comprehensive, professional penetration test report detailing their exploit development methodologies and code.

    [05] Authoritative Sources & Certification References

    Certifying Body & Official Resources

    Official Registration URLDirect Link
    https://www.offsec.com/courses/exp-301/
    NIST NICE ReferenceSP-DEV-001
    Official Link
    MITRE ATT&CK ReferenceT1203
    Official Link