Shellter vs KnowBe4: Which macOS Apps tool is Best in 2025?

Shellter is an open-source dynamic shellcode injection tool, pre-installed on Kali Linux, designed for injecting malicious code into 32-bit Windows portable executable (PE) files while evading antivirus detection. Known as a dynamic PE infector, Shellter, developed by kyREcon, allows penetration testers and red teamers to embed custom or Metasploit-generated shellcode into legitimate Windows applications without altering suspicious file attributes. Its Stealth Mode preserves the original functionality of infected executables, making it ideal for ethical hacking and security assessments.

KnowBe4 is a leading cybersecurity platform designed to empower organizations by training employees to outsmart threats like phishing and social engineering. Trusted by nearly 70,000 businesses worldwide, it combines AI-driven tools with engaging training to strengthen human defenses. From phishing simulations to real-time coaching, KnowBe4 helps build a security-first mindset, keeping companies safe in today’s fast-evolving digital landscape.