Mastering Bug Bounty Hunting: A Practical Guide to Real-World Cybersecurity

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Introduction:

Bug bounty hunting is a critical skill in cybersecurity, enabling ethical hackers to identify vulnerabilities before malicious actors exploit them. Deepak Saini’s Bug Hunting Masterclass offers hands-on training with live targets, tools, and mentorship—backed by a money-back guarantee. This article explores key techniques, commands, and methodologies used by professional bug bounty hunters.

Learning Objectives:

  • Understand essential bug bounty hunting tools and workflows.
  • Learn how to identify and exploit common web vulnerabilities.
  • Master automation and scripting for efficient vulnerability scanning.

1. Reconnaissance with Subdomain Enumeration

Command (Linux):

subfinder -d example.com -o subdomains.txt

What It Does:

Subfinder is a fast subdomain discovery tool that queries multiple sources (DNS, certificates, search engines).

Step-by-Step Guide:

1. Install Subfinder:

go install -v github.com/projectdiscovery/subfinder/v2/cmd/subfinder@latest

2. Run the command against a target domain (example.com).

3. Review `subdomains.txt` for potential attack surfaces.

2. Vulnerability Scanning with Nikto

Command (Linux):

nikto -h https://example.com -output scan_results.html

What It Does:

Nikto scans web servers for outdated software, misconfigurations, and common vulnerabilities (e.g., XSS, SQLi).

Step-by-Step Guide:

1. Install Nikto:

sudo apt install nikto

2. Run the scan and save results in HTML format.

3. Analyze `scan_results.html` for critical findings.

3. Exploiting SQL Injection with SQLmap

Command (Linux):

sqlmap -u "https://example.com/login?id=1" --dbs

What It Does:

SQLmap automates SQL injection attacks to extract database information.

Step-by-Step Guide:

1. Identify a vulnerable parameter (e.g., `?id=1`).

2. Run SQLmap to list databases (`–dbs`).

  1. Use `–dump` to extract table data (ethical use only!).

4. Windows Privilege Escalation Check

Command (Windows PowerShell):

whoami /priv

What It Does:

Lists current user privileges, highlighting potential misconfigurations (e.g., SeImpersonatePrivilege).

Step-by-Step Guide:

1. Open PowerShell as an unprivileged user.

  1. Run `whoami /priv` to check for weak permissions.

3. Exploit misconfigured privileges (e.g., via JuicyPotato).

5. API Security Testing with Postman

Technique:

Intercept API requests using Burp Suite and test for:
– Broken Object Level Authorization (BOLA).
– Excessive data exposure.

Step-by-Step Guide:

  1. Configure Burp Suite as a proxy for Postman.
  2. Send manipulated requests (e.g., change `user_id` to another user’s ID).

3. Check for unauthorized access or data leaks.

6. Cloud Hardening (AWS S3 Buckets)

Command (AWS CLI):

aws s3api put-bucket-acl --bucket my-bucket --acl private

What It Does:

Ensures an S3 bucket is not publicly accessible.

Step-by-Step Guide:

1. Install AWS CLI and configure credentials.

2. Run the command to enforce private access.

3. Verify via:

aws s3api get-bucket-acl --bucket my-bucket

7. Automating Scans with Bash Scripts

Script Example:

!/bin/bash 
subfinder -d $1 -o subs.txt 
httpx -l subs.txt -o live_urls.txt 
nuclei -l live_urls.txt -t ~/nuclei-templates/

What It Does:

Automates subdomain discovery, live URL checks, and vulnerability scanning.

Step-by-Step Guide:

1. Save the script as `automate_scan.sh`.

2. Run `chmod +x automate_scan.sh`.

3. Execute:

./automate_scan.sh example.com

What Undercode Say:

  • Key Takeaway 1: Bug bounty hunting requires a mix of manual testing and automation. Tools like SQLmap and Subfinder streamline reconnaissance.
  • Key Takeaway 2: Cloud misconfigurations (e.g., open S3 buckets) are low-hanging fruit for attackers—always enforce least-privilege access.

Analysis:

The cybersecurity landscape is evolving, with APIs and cloud infrastructure becoming prime targets. Deepak’s course emphasizes real-world hacking, bridging the gap between theory and practice. As AI-driven attacks rise, mastering manual techniques (like privilege escalation) remains crucial.

Prediction:

By 2026, bug bounty programs will expand beyond web apps to include AI model vulnerabilities (e.g., adversarial attacks). Ethical hackers must adapt to secure next-gen tech.

Ready to start hacking? Enroll in Deepak’s Bug Hunting Masterclass—or get your money back! 🚀

IT/Security Reporter URL:

Reported By: Deepak Saini – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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