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Introduction:
Ethical hacking isn’t about malicious destruction—it’s a disciplined, methodical process of identifying security gaps through authorized penetration testing and vulnerability research. As demonstrated by bug hunters like Devansh Chauhan, consistent reporting and sharpening technical skills transform potential exploits into actionable fixes, strengthening defenses across web applications, cloud infrastructures, and internal networks.
Learning Objectives:
- Master reconnaissance and asset discovery techniques used by professional red teams.
- Execute manual and automated vulnerability exploitation with proper mitigation strategies.
- Build effective vulnerability reports and proof‑of‑concept code for responsible disclosure.
You Should Know:
- Reconnaissance and Asset Discovery – The First Step to Ethical Domination
Step‑by‑step guide:
Before breaking anything, you must know what you are allowed to test. Start with passive reconnaissance (OSINT) then move to active scanning within scope.
Linux commands:
Subdomain enumeration using assetfinder echo "example.com" | assetfinder -subs-only | tee subdomains.txt DNS brute‑force with dnsrecon dnsrecon -d example.com -t brt -D /usr/share/wordlists/subdomains.txt Live web servers discovery cat subdomains.txt | httpx -status-code -title -tech-detect
Windows (PowerShell):
DNS resolution of subdomains
Get-Content .\subdomains.txt | Resolve-DnsName -ErrorAction SilentlyContinue | Select-Object NameHost
Port scanning with Test-NetConnection (basic)
1..1024 | ForEach-Object { if(Test-NetConnection example.com -Port $_ -InformationLevel Quiet) { Write-Host "Port $_ open" } }
What this does: Identifies all internet‑facing assets, reducing blind spots before vulnerability probing. Use amass, naabu, or masscan for faster results.
- Vulnerability Scanning with Automation – Nuclei & Custom Templates
Step‑by‑step guide:
Automated scanners accelerate bug hunting, but custom templates find zero‑days. Install Nuclei, the community‑driven vulnerability scanner.
Installation and usage (Linux):
Install Go, then Nuclei go install -v github.com/projectdiscovery/nuclei/v3/cmd/nuclei@latest Update all templates nuclei -update-templates Scan a target with all templates (use carefully, stay in scope) nuclei -u https://target.com -severity critical,high -o critical_bugs.txt Run a specific template for misconfigurations nuclei -u https://target.com -t misconfiguration/nginx-misconfiguration.yaml
Mitigation: For defenders, run Nuclei in “dry‑run” mode (-silent) against your own CI/CD pipeline to catch regressions. For offensive use, always obtain written authorization.
- Web Application Bug Hunting – SQLi, XSS, and IDOR in Action
Step‑by‑step guide:
Manual testing still finds what scanners miss. Begin with parameter fuzzing and logical flaws.
SQL injection detection (manual):
GET /product?id=1' AND '1'='1 HTTP/1.1 Host: vulnerable.com
If response differs from id=1' AND '1'='2, the parameter is likely injectable.
Automated extraction using sqlmap (ethics first):
sqlmap -u "https://target.com/product?id=1" --batch --level 3 --risk 2 --dbs
Cross‑Site Scripting (XSS) test payload:
<script>alert('Undercode_Test')</script>
<img src=x onerror=alert(1)>
IDOR (Insecure Direct Object Reference) – change a numeric parameter:
GET /api/invoice?user_id=1001 → change to 1002, check if another user’s invoice appears
Mitigation: For developers, implement parameterized queries (SQL), Content Security Policy (XSS), and session‑based access controls (IDOR). For bug hunters, report these with a clear PoC.
- Privilege Escalation – From Low‑Priv User to Domain Admin
Step‑by‑step guide after gaining initial foothold:
Linux and Windows systems often have misconfigured sudo rights, scheduled tasks, or unquoted service paths.
Linux privilege escalation checklist (commands):
Sudo misconfigurations sudo -l SUID binaries find / -perm -4000 -type f 2>/dev/null Writable cron jobs ls -la /etc/cron /var/spool/cron/ Kernel exploitation (last resort) uname -a; lsb_release -a
Windows privilege escalation (PowerShell):
Who am I and what groups
whoami /all
Get-LocalGroup | ForEach-Object { Get-LocalGroupMember $_.Name }
Unquoted service paths
Get-WmiObject win32_service | Select-Object Name, PathName | Where-Object {$<em>.PathName -notlike '"' -and $</em>.PathName -like ' '}
AlwaysInstallElevated registry keys
reg query HKLM\SOFTWARE\Policies\Microsoft\Windows\Installer /v AlwaysInstallElevated
reg query HKCU\SOFTWARE\Policies\Microsoft\Windows\Installer /v AlwaysInstallElevated
Mitigation: Harden by removing unnecessary sudo rights, disabling SUID binaries, and quoting service paths. Use `secedit` and AppLocker to block known privesc vectors.
- Reporting and Proof of Concept – How to Get Your Bug Acknowledged
Step‑by‑step guide:
Your vulnerability report is as crucial as the find itself. Structure it for rapid triage.
Essential report sections:
- Concise and severity rated (e.g., “CRITICAL: Pre‑auth RCE via SSTI in /admin/export”)
- Description: One‑paragraph summary.
- Steps to reproduce: Bullet points with exact requests.
- Proof of concept: Code or curl command. Example:
curl -X POST https://target.com/api/upload -F "[email protected];filename=test.svg" -H "X-Forwarded-For: 127.0.0.1"
- Impact: What an attacker can do (data theft, account takeover, etc.)
- Suggested fix: Remediation advice (filter input, patch version).
Tools to create PoC: Burp Suite for request capture, Postman for API testing, or custom Python script:
import requests
url = "https://target.com/vulnerable"
payload = {"user": "admin' OR '1'='1"}
r = requests.get(url, params=payload)
print(r.text[:500])
What Undercode Say:
- Key Takeaway 1: Consistent, methodical testing—not just automated scanning—uncovers the deepest flaws.
- Key Takeaway 2: A professional report with reproducible steps transforms a bug from an annoyance into a fix.
Analysis: Ethical hacking sits at the intersection of curiosity and discipline. The post by Devansh Chauhan highlights that “breaking things” is only half the story; documenting and communicating findings responsibly is what drives real security improvement. Today’s bug hunters must be equally skilled in exploitation and empathy—understanding developer constraints while pushing for secure code. The rise of bug bounty platforms has professionalized this field, but the core remains: one well‑written vulnerability report can protect millions of users. Automation helps but never replaces manual reasoning, especially for logic flaws and privilege escalation chains. The feedback “Another vulnerability reported and acknowledged” is the currency of trust in this ecosystem.
- Cloud Hardening & API Security – The New Battleground
Step‑by‑step guide for misconfigured S3 buckets and API endpoints:
Check for public S3 buckets (AWS CLI):
aws s3 ls s3://target-bucket/ --no-sign-request aws s3 cp s3://target-bucket/secret.txt . --no-sign-request
API security testing with Burp Suite:
1. Proxy all API traffic through Burp.
2. Look for GraphQL introspection endpoints (`/graphql?query={__schema{types{name}}}`).
- Test rate limiting by sending 100 requests in 1 second using intruder.
- Check for excessive data exposure (e.g., `/api/users/me` returning password hashes).
Mitigation for defenders: Enable block public access on S3, enforce API rate limiting, and use automated tools like Scout Suite or Prowler for cloud compliance scanning.
7. Continuous Learning – Certifications and Training Pathways
Step‑by‑step guide to building your ethical hacking roadmap:
Based on Tony Moukbel’s profile (58 certifications in cybersecurity, forensics, programming, electronics), a diverse learning path yields multi‑domain expertise.
Recommended certifications by career stage:
- Beginner: CompTIA Security+, eJPT (eLearnSecurity Junior Penetration Tester)
- Intermediate: OSCP (Offensive Security Certified Professional), PNPT (TCM Security)
- Advanced: OSWE (Web Expert), CISSP (for management), cloud‑specific (AWS Security Specialty)
- Defensive/Forensics: GIAC GCFA, CHFI
Free/Low‑cost training labs:
- TryHackMe (guided rooms) and Hack The Box (Pro Labs)
- PortSwigger Web Security Academy (free, with Burp Suite)
- PwnTillDawn (multi‑user CTF)
What you should practice daily: Solve one CTF challenge, read one CVE analysis, and attempt to replicate the exploit in an isolated VM.
Prediction:
Within 18 months, AI‑augmented bug hunting will become standard—automated reasoning systems will triage 80% of duplicate reports and suggest exploit chains for partial findings. However, human creativity will remain essential for business‑logic vulnerabilities and zero‑day races. The demand for certified ethical hackers will outpace supply, pushing salaries for top bug hunters above $300k. Simultaneously, regulatory bodies (GDPR, NIS2, CCPA) will mandate regular red‑team exercises, turning ethical hacking from an optional security layer into a compliance necessity. The future belongs to hunters who blend deep technical skill with clear communication and legal awareness.
▶️ Related Video (80% Match):
https://www.youtube.com/watch?v=25iMrJDyIDk
🎯Let’s Practice For Free:
IT/Security Reporter URL:
Reported By: Devansh Chauhan – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
