KONSTANTINOS KARLIS

• Digital Forensics Analysis with Volatility & Autopsy

Conducted a memory and disk forensics investigation using Volatility and Autopsy as part of a simulated criminal case study.

• Penetration Testing on Metasploitable3 VMs

Executed a full penetration test lifecycle using Kali Linux, Nmap, Nessus, and Metasploit. Identified and exploited critical vulnerabilities, documented escalation paths, and compared scanning engines.

• ROP Exploitation & Binary Analysis

Developed a working Return-Oriented Programming (ROP) attack on a buffer-overflow vulnerable binary. Used GDB debugging, and ROPgadget to construct syscall-based shell execution chains.

• Distributed Multimedia Content Sharing System
Developed a scalable communication platform in Java capable of transmitting multimedia content (videos, photos, text) to a large user base.

• Blockchain Smart Contracts with Solidity

Developed and deployed Ethereum-based DApps using Solidity, focusing on trustless transactions and automated agreements.

• Secure Web System with OpenSSL
Created a web-based application utilizing OpenSSL for secure communication and MySQL for storage. Ensured encryption of sensitive fields and validated input sanitation practices.

Completed mandatory military service in Greece in May 2024.