: Use Ghidra or IDA Pro to examine the exported functions.
Check for PitchTech or similar free VST frameworks which are often used as templates for these challenges. :
If you tell me the (e.g., the name of the CTF or the website), I can provide a more tailored step-by-step solution.
: Look for VSTPluginMain . This is the entry point for VST plugins.
If the plugin is used to "steganographically" hide data, you may need to load it into a Digital Audio Workstation (DAW) like FL Studio and analyze the output waveform. Look for non-standard metadata in the DLL resources.