Dheeraj Balan

Cybersecurity Specialist

Offensive & Defensive Security Pen Testing, Exploit Dev, Malware Analysis, and SOC/IR Practices. Skilled in Python, Bash, and low-level assembly on Linux. Passionate about building, breaking, and defending systems.

Focus
Web, Network, Mobile
Languages
Python, Bash, ASM
Linux
Shellcode & BOF
CTFs
Top 1% TryHackMe
Open to roles in Pen Testing, VAPT, Red Team Ops, SOC Analysis, and Threat Research.

About Me

I’m a junior cybersecurity professional with hands-on experience in both red team and blue team practices. On the offensive side, I’ve built and used tools like port scanners, sniffers, ARP spoofing and detection, IDOR checkers, brute forcers, and reconnaissance utilities. I’ve also written custom encrypted bind/reverse shells, shellcode for Linux, and explored malware techniques and exploit development including buffer overflows. On the defensive side, I’ve developed tools for ARP spoof detection, DDoS detection and blocking, log analysis, and incident investigation scripts. This blend of skills gives me a strong understanding of how attacks work and how to defend against them.

Skills & Tooling

Port Scanner
Custom TCP/UDP scanning and banner grabs in Python/Bash.
Netcat & Sockets
Pivoting, reverse/bind shells, and quick file transfer.
Shellcode (Linux ASM)
Custom reverse/bind shells and encoder/decoder stubs.
ARP Spoofing & Detect
Spoofing labs plus ARP anomaly detection scripts.
IDOR Checker
Parameter fuzzing and access control checks for APIs.
Network Sniffer
Packet capture, filtering, and simple flow summaries.
Network Scanner
Subnet discovery and service enumeration.
SQLi & Sensitive Data
Manual testing and payload crafting for common flaws.
Log Analyzer
Suspicious pattern detection and quick triage views.
Directory Listing & Recon
Content discovery and subdomain/domain busting.
Bruteforcer (Ethical)
Rate-limited wordlists, only for authorized tests.
Process/Self Injection
Research and lab simulations for education.
DDoS Defender
Rate detection and defensive patterns in lab environments.
DDoS (Lab Only)
Traffic generation in isolated, permitted labs for learning.

Defensive Highlights

Blue-team tools from my stack
ARP Spoof Detect
Catches table anomalies and alerts cleanly.
DDoS Defender
Identifies bursts and throttles in labs.
Network Sniffer
Monitors flows and filters suspicious traffic.
Log Analyzer
Spots patterns and highlights outliers fast.

Selected Projects

Multi-Mode Port & Network Scanner

Python/Bash

Fast TCP/UDP probing with banner grabs, CIDR sweep, and JSON summaries. Built for speed and clarity during engagements.

Scanning Enumeration Automation
View on GitHub

Encrypted Reverse/Bind Shellcode

Assembly

Linux shellcode experiments with simple encoders/decoders and staged payloads for controlled lab use.

ASM Security Research

Web IDOR & Recon Suite

Python

Parameter discovery, access checks, and domain busting to quickly spot authorization gaps and hidden routes.

Web Recon Automation
View on GitHub

ARP Spoof Detector & Sniffer

Python

Detects table anomalies and sniffs for suspicious flows; helpful for blue-team practice and demos.

Detection Networking
View on GitHub

Experience

Junior Pen Tester — CodeSecure (Intern)
3 months

Web app testing, network assessments, and mobile testing. Found IDOR, SQL injection, sensitive data exposures, and directory listing issues. Worked both individually and in a team.

Web Pen Tester — Hackers For You (Intern)
3 months

Focus on web applications, recon, and validation of remediation steps. Coordinated reports and walkthroughs with stakeholders.

Independent Security Researcher
~2 years

Dedicated to CTFs, labs, and courses: TryHackMe top 1%, personal tooling, and practice in exploit/malware topics. Ready to bring this focus to a full-time role.

Bug Bounty & CTFs
Ongoing

Submitted multiple findings (some marked informational). Solved many labs and machines on TryHackMe; consistent top 1% performance.

Certifications & Courses

CompTIA Security+
Completion Certificate
CompTIA PenTest+
Completion Certificate
IBM QRadar Foundational
Verified
Threat Hunting Essentials
Completion Certificate
Splunk: Event Management
Completion Certificate
Splunk Security Analytics
Completion Certificate
Google: Network & Security
Completion Certificate

Contact

Reach out for roles, collaborations, or security testing engagements.

Phone

All security work is performed ethically and only with proper authorization.