01
Exploit Development
Vulnerability research, exploit development, and offensive tooling across low-level and modern targets.
x86/x64 AssemblyCPythonRustGoTypeScript
Core
C / C++ / Rust / Zig
L1
Kernel Exploitation / Binary Analysis / Fuzzing
Founder @ Skuntir.comMunich, Germany
Kernelstub
I am Prepakis Georgios, also known as Kernelstub, a Security researcher focused on exploit development, reverse engineering, hardware and IoT security, and offensive research that transforms complex systems into actionable security insights.
Penetration TestingReverse engineeringExploit DevelopmentHardware / IoT security
11+
Years Experience
14+
Research Builds
20+
CVEs
About Me
Offensive security, low-level systems, and practical research.
Security Research
Penetration testing, exploit development, reverse engineering, vulnerability research, and offensive security across modern and low-level targets.
Programming & Systems
Experience building tooling, backend systems, automation, and low-level software across multiple programming environments and platforms.
Hardware & Embedded
Embedded systems, firmware analysis, IoT research, SDR workflows, RF experimentation, and hardware-oriented security assessment.
Expertise
Low-level research, offensive operations, and embedded security.
A practical spread of security research disciplines, from exploit work and reversing to embedded targets and RF systems.
02
Reverse Engineering
Static and dynamic analysis of binaries, malware, firmware, and low-level software systems.
Binary AnalysisMalware AnalysisFirmware RE
Core
Ghidra / IDA / x64dbg / Binary Ninja
L1
Malware Analysis / Firmware Analysis / Static/Dynamic Analysis
03
Penetration Testing
Offensive security assessments across web applications, infrastructure, internal networks, and exposed services.
Web SecurityADVuln Research
Core
External/Internal / Linux / Windows
L1
Red Teaming / AD / Security Auditing
04
Embedded & Hardware Security
Embedded systems research, firmware analysis, hardware interfaces, and IoT-oriented security assessment.
Embedded SystemsFirmwareIoT
Core
STM32 / ESP32 / JTAG/SWD / FreeRTOS
L1
Firmware Analysis / Hardware Interfaces
Skills
Technical capabilities across security, systems, and infrastructure.
Choose a domain to scan the exact tools, protocols, languages, and systems I work with.
C
C++
C#
Rust
Zig
Go
Python
TypeScript
JavaScript
PHP
Perl
PKL
Nim
D
OCaml
Objective-C
Arduino / INO
Bash
PowerShell
x86/x64 Assembly
Work Chronology
The work that shaped how I think about research, tooling, and operations.
2025 - PresentFounder
Founder of Skuntir
Building low-level security tooling and infrastructure for offensive research, hardening, and day-to-day operations.
- Offensive security tooling and internal infrastructure
- Research workflows for hardening work
- Systems for security testing and reporting
2026 - 2026Robotics
Robotics Teleoperator
Teleoperating robotic arms and collecting clean demonstration data for machine-learning training.
- Robotic manipulator teleoperation
- Demonstration data for machine-learning workflows
- Hands-on feedback for robotics training systems
2022 - 2025Operations
Security Personnel
Physical security work for sensitive sites, including access control, incident response, and protocol enforcement.
- Access control and site security protocol enforcement
- Incident response in operational environments
- Risk mitigation for sensitive facilities and personnel
2017 - 2022Independent
Independent Contractor
Contract work spanning systems programming, reverse engineering, and security research across diverse client environments.
- Systems programming and automation for client-specific environments
- Reverse engineering and low-level debugging work
- Security research support across varied technical targets
Connect
Available for security research, offensive R&D, and hard technical problems.
Based in Germany. Focused on security, low-level systems, and offsec research.