Exploit the stack
Find stack buffer overflows and turn them into working exploits against Windows user mode software.
Partners and press
Overview
Finding a crash is the start. OSED makes you turn it into a shell.
OSED is OffSec’s level 300 exploit development credential, earned through EXP-301, with no formal prerequisites. In the 48-hour supervised exam, three live-lab exploit tasks mean reversing, bypassing mitigations and writing shellcode. OffSec recommends debuggers, 32-bit exploitation and Python 3, and calls C, assembly and Windows internals highly recommended.
5Topics
2880Minutes
5Skills
8Roles
What it tests
Learn all the way down.
Learn all the way down.
Perform when it matters.
Reverse to find bugs
Reverse engineer binaries with IDA Pro and a debugger to find vulnerabilities and understand behavior.
Beat the mitigations
Bypass DEP and ASLR, and use a format string flaw to build a read primitive.
Write your own payload
Build custom shellcode and get a shell on the target.
Course outline
What this course will cover.
What this course will cover.
The full outline is on its way.
We design this course ourselves. OffSec runs the exam and issues the credential, and LUNARTECH is independent of OffSec.
Find and exploit stack-based buffer overflows.
- Stack overflows
- Exploitation
Reverse engineer with IDA Pro and a debugger, and use dynamic analysis to understand how a target behaves.
- IDA Pro
- Debugger
- Dynamic analysis
Write custom shellcode for the exploits you build.
- Shellcode
- Payloads
Defeat DEP and ASLR in stack overflow exploits.
- DEP
- ASLR
Use a format string vulnerability to build a read primitive.
- Format strings
- Read primitive
Issued by
Certifying body · Independent of LUNARTECH
OffSec
OffSec builds the courses and runs the hands-on exams that go with them. Exams are proctored by OffSec staff over a private VPN, and some credentials, such as OSCP+, expire after three years unless renewed. LUNARTECH is independent of OffSec.
How you get there
Top-tier roles go to people who can do the work.
Top-tier roles go to people who can do the work.
Here’s how you get there.
Know where you start.
No formal prerequisites. OffSec recommends familiarity with debuggers, basic 32-bit exploitation and Python 3, and calls strong C, assembly and Windows internals skills highly recommended.
Work through the course.
Five topics, with the full outline on its way.
Sit it with OffSec.
OffSec runs the exam and issues the credential, so you register and book directly with them.
Support
Support at every stage.
Support at every stage.
You won’t be working through this alone.
Before you start
Try it first.
A 3-day free trial opens a selection of the content. Your card is only charged once it ends.
While you learn
Mentors within reach.
Stuck on a concept? Reach out to a mentor whenever you need help.
While you learn
One-on-one sessions.
On the yearly plan, one-on-one sessions give you dedicated support.
Any time
A team behind you.
Write to info@lunartech.ai at any point, from your trial onwards. If your employer is funding you, we’ll set it up with them directly.
All the way through
A schedule that fits around your life.
Your own paceFrom anywhereAt any hour
After the last lesson
Stay in the network.
Your alumni network stays with you: ongoing support, opportunities and industry insight.
Career support
Career support, past the last lesson. Coaching, a sharper resume, real interview preparation and the people to know.
Career direction
Tailored coaching helps you decide where to aim and how to get there.
Strong portfolio
Hands-on projects become work you can show, not just claim.
Resume and profile
Personalized refinement, so what you send says what you can actually do.
Interview preparation
Preparation for the questions that decide it, so you walk in ready.
Network and search
Connections with industry leaders, and an alumni network that stays with you.
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Real stories from the community.
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The programme’s clear, bite-sized content and practical projects dramatically improved my speed from fuzzy idea to MVP and my ability to communicate AI value. I followed the system, and it works.
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Why choose us
Built around how you actually learn.
One standard behind every course, from the first lesson to long after the last.
Hands-on practice
Apply every idea to real problems, so it becomes something you have used, not only seen.
Industry-aligned curriculum
We keep courses current with the tools, techniques and skills the field asks for.
Flexible learning
Study at your own pace, from anywhere, at any hour.
Certificate of completion
Finish the course and earn a certificate that shows what you have learned.
Focus on your success
Personalized learning plans and support structures carry you through the hard parts.
Lifetime alumni network
Stay connected after you finish, with ongoing support, opportunities and industry insight.
Your certificate
It doesn’t raise its voice. Neither will you.
Finish a LUNARTECH course and its certificate is issued in your name, under our signature. OffSec’s credential comes from OffSec, when you pass its exam.
Certificate of completion
Your Name
OSED course
LUNARTECH RISE Academy
Pricing
This course comes with the membership.
This course comes with the membership.
So does everything else.
One membership opens every course, certification, workshop and masterclass in the Academy. Every plan starts with a 3-day free trial. You register and book the exam directly with OffSec.
3 days free, then $29.97 a month. Your card is only charged once the trial ends.
Included in every plan
- Every course in the Academy
- Every certification course
- Workshops and masterclasses
- A certificate of completion
- A 3-day free trial
- Learning at your own pace
- The lifetime alumni network
- Upgrades at any time
In practice
Eight roles.
Eight roles.
One credential across them all.
No single job owns it. Here’s where each role leans hardest, and where its work ends up.
- 01Stack overflows
- 02Reversing
- 03Shellcode
- 04DEP and ASLR
- 05Format strings
-
Public exploits run out. Yours don’t. Writing them is the whole exam.
Stack overflows, Shellcode, DEP and ASLR
Vulnerability research, Offensive security consulting
-
A crash is not a finding until you exploit it. Reversing gets you from one to the other.
Reversing, Format strings, Stack overflows
Vulnerability research, Government labs
-
Shellcode and mitigations show up in malware too. Reading them is the same skill.
Reversing, Shellcode
Security product vendors, Government labs
-
Custom exploits fill the gap when tools fail. DEP and ASLR are the usual obstacles.
Stack overflows, DEP and ASLR
Red teams, Offensive security consulting
-
Reading unfamiliar binaries is the entry skill here. Reversing leads to the flaw the exploit needs.
Reversing, Shellcode
Security product vendors, Vulnerability research
-
Memory bugs in C and C++ code are still the ones that count. Mitigations raise the cost but do not remove the bug.
Stack overflows, Format strings, DEP and ASLR
Security product vendors, Vulnerability research
-
DEP and ASLR are what your product leans on. Bypass work shows where they stop helping.
DEP and ASLR, Shellcode
Security product vendors
-
A crash is a lead and a working exploit is evidence. Mitigation bypass shows how bad a bug really is.
Stack overflows, Reversing, DEP and ASLR
Vulnerability research, Government labs
- Vulnerability research
- Security product vendors
- Red teams
- Government labs
- Offensive security consulting
Exploit Developer
Public exploits run out. Yours don’t. Writing them is the whole exam.
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The field
Anyone can use AI.
Anyone can use AI.
Few can engineer it. This is where that starts.
+340%growth in open roles requiring AI skills
Roles and pay
~35,000 open roles right now
Open roles: Built In, Greenhouse, LinkedIn.
Typical salaries: Glassdoor, Levels.fyi, Payscale, Indeed, Ravio, JobRise, U.S. BLS. Military: 2026 U.S. basic pay, drone officers with aviation incentive pay.
Updated November 2026.
FAQ
Frequently asked questions.
Need help? These answers cover most of what people ask before they start.
No. OffSec issues it. LUNARTECH is independent of OffSec, and its names and marks belong to it. When you finish a course of ours, you earn a LUNARTECH certificate of completion for that course.
No. We design this course ourselves, around what the exam covers. OffSec has no part in it, and you still register and book the exam directly with OffSec.
2880 minutes, remote, proctored.
No formal prerequisites. OffSec recommends familiarity with debuggers, basic 32-bit exploitation and Python 3, and calls strong C, assembly and Windows internals skills highly recommended.
Does not expire.
We last reviewed it on 5 November 2026, from OffSec’s own pages. Details change, so check the official page before you book.
Our 3-day free trial gives you access to a selection of content in the bootcamps, courses and materials, so you can experience the value of our content first-hand. This includes comprehensive learning materials and interactive sessions. You won’t be charged during this period, though we require your credit card details at the start to ensure a seamless transition should you choose to continue.
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The course
Build the skills behind OSED.
Prove you can write working exploits for Windows software. Start with a free trial, or enroll in a plan and work through the course at your own pace. OffSec runs the exam and issues the credential.
LUNARTECH is independent of the vendors and certifying bodies listed here. Their names, exam titles and marks belong to them, exams are run by them, and credentials are issued by them. Reviewed 5 November 2026. Catalogues change often, so confirm the details on the official page before you book.
