What is VulnHub?
VulnHub is a community-driven repository of deliberately vulnerable virtual machines that you download and run in your own local environment. For professionals seeking VulnHub OSCP Practice, this means no cloud infrastructure, no subscription, and no internet dependency during practice — just a VM file, your virtualization software, and a network between your Kali attacker machine and the target. Before Hack The Box and TryHackMe, there was VulnHub. Founded in 2012, it was the community’s primary practice ground for over a decade. Today VulnHub hosts over 800 vulnerable VMs — every machine is free — and the methodology you practice on an older VulnHub machine is the exact same methodology you use on the OSCP exam today.
Is This Right for You?
This is for you if...
- You want 100% free offline practice with no internet dependency
- You prefer controlling your own lab environment without VPN connections to cloud platforms
- You’re preparing for OSCP and want supplemental machines alongside HTB and PG
- You have limited bandwidth or internet reliability — download once, practice indefinitely
- You enjoy the classic boot-to-root format: network up, machine on, go find root
This is NOT for you if...
- You need hints, guidance, or structured learning paths — VulnHub provides none
- You want the latest modern attack techniques — many machines reflect older vulnerability classes
- You’re brand new to security — the zero-guidance format is overwhelming without fundamentals
Machine Categories & Difficulty
| Difficulty | Recommended Machines | Skills Required | Hours to Complete |
|---|---|---|---|
|
Easy |
Kioptrix 1–5, Mr. Robot, Basic Pentesting 1 & 2 |
Basic enumeration, common CVEs, simple privilege escalation |
2–4 hours |
|
Intermediate |
FristiLeaks, HackLAB: Vulnix, VulnOS 2, Stapler |
Solid enumeration, manual exploitation, intermediate privesc |
4–8 hours |
|
Hard |
Tr0ll 1–3, Pinky’s Palace, PwnLab: init |
Advanced exploitation, bypasses, creative methodology |
8–16 hours |
|
Insane |
SickOs, MATRIX |
Expert techniques across all domains |
16+ hours |
Setting Up Your VulnHub OSCP Practice Lab
| Component | Recommended Option | Cost | Purpose |
|---|---|---|---|
|
Virtualization software |
VirtualBox (free) or VMware Workstation Pro |
$0 / $199 |
Runs the vulnerable VMs |
|
Attacker machine |
Kali Linux VM or native install |
$0 |
Your offensive platform |
|
Network mode |
Host-only or NAT network (VirtualBox) |
$0 |
Isolates lab from your real network |
|
RAM |
8GB minimum, 16GB recommended |
Hardware cost |
Run attacker + target simultaneously |
OSCP Prep — TJ Null's VulnHub List
TJ Null maintains the gold-standard community list of VulnHub machines that mirror OSCP exam style. Key machines: Kioptrix 1–4, FristiLeaks, Stapler, PwnLab, Brainpan 1, Mr. Robot, HackLAB: Vulnix, VulnOS 2, SickOs 1.2, pWnOS 2.0, and Sedna.
Beginner Sequence
Kioptrix Level 1 → Kioptrix Level 2 → Basic Pentesting 1 → Basic Pentesting 2 → Mr. Robot. This teaches: Nmap scanning, service enumeration, searchsploit, manual exploitation, and Linux privilege escalation — in order of complexity.
Intermediate Sequence
FristiLeaks → HackLAB: Vulnix → VulnOS 2 → Stapler. This teaches: deeper service enumeration, manual exploitation without Metasploit, intermediate Linux privilege escalation, and working with more complex multi-service environments — in order of complexity.
Hard Sequence
Tr0ll 1 → Tr0ll 2 → PwnLab: init → Brainpan 1. This teaches: advanced enumeration, binary exploitation basics, creative methodology, bypassing restrictions, and attacking environments where the obvious path is intentionally blocked — in order of difficulty.
Recommended Resources
- Vulnhub — browse and download all machines (filter by difficulty, OS, type)
- TJ Null’s OSCP VulnHub list — curated OSCP prep machine list
- g0tmi1k’s ‘Basic Linux Privilege Escalation’ — the definitive privesc reference, essential for VulnHub
- HackTricks — technique reference for every stage of a VulnHub machine
- IppSec (YouTube) — walkthroughs for many classic VulnHub machines with deep methodology
── SecVerse Marketplace — Resources ──
Which Platform is Right for You?
VulnHub OSCP Practice is the right choice when you want free, offline, unguided practice you fully control. Here is how it compares:
| If you want... | Best Choice |
|---|---|
|
You want cloud-based machines with community and hints |
Hack The Box — 500+ machines, active community, write-ups |
|
You want official OSCP-aligned machines with write-ups |
OffSec Proving Grounds — built by the OSCP team |
|
You want guided beginner learning paths |
TryHackMe — structured, in-browser, no setup |
|
You want 100% free offline machines you download and own |
VulnHub OSCP Practice— this is the right choice |
How to Get Started
To start with VulnHub OSCP Practice apply the following steps :
- Set up VirtualBox with a host-only network. Download VirtualBox free from virtualbox.org. Create a host-only network adapter in settings. Every VulnHub machine connects to this isolated network — your Kali attacker connects to the same.
- Download Kioptrix Level 1 and work it without help first. Import it, boot it, run Nmap to find it, then enumerate. Spend at least one full hour attempting it before reading anything. The frustration is the learning.
- After completing a machine, read two walkthroughs by different people. One walkthrough teaches you the solution. Two teach you methodology.
📌 Note: The information on this page — including certification details, exam codes, pricing, and salary ranges — is regularly reviewed and updated to reflect the latest data from official sources. Always verify current details directly with the relevant certification body or platform before making any decisions.
Community & Support
── VulnHub Communities ──
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