What are some examples of malicious operations that can be performed using C++ addons as described in the article?

The article provides three payload examples: writing a file (e.g., `new.txt`), executing a system command like `powershell start calc.exe`, and executing shellcode generated by Metasploit (e.g., `msfvenom -p windows/x64/exec CMD=calc.exe -f c`). These examples demonstrate how C++ addons can perform arbitrary operations on the target system while evading code scrutiny. Such techniques are akin to those used in Penetration Basics - Obtaining the List of Installed Programs on the Current System for stealthy reconnaissance.