ReFox XII Tutorial: Decompiling and Securing VFP Applications

ReFox XII secures Visual FoxPro (VFP) applications by encrypting the compiled executable (.EXE or .APP) to prevent decompilation. Because VFP compiles into a tokenized, intermediate bytecode rather than true machine language, native binaries can easily be reverse-engineered by tools like ReFox itself or UnFoxAll. ReFox XII provides “branding” options to encrypt these modules and lock down intellectual property. Preparation Before Protecting

Turn Off Debug Info: Uncheck “Debug Info” in your VFP project information box before building. This removes internal metadata, making any broken-into code far harder to interpret.

Compile standard binaries: Build your final .EXE or .APP natively through Visual FoxPro as you normally would.

Keep Backups: Always retain an unprotected master copy of your binary, as branding alters the file structure permanently. Step-by-Step Protection Process using ReFox XII level III – ReFox XII

1 using FileToStr( ) is partially restricted, not blocked in macros and ExecScript() 2 using FileToStr( ) is partially restricted, Overview – ReFox XII – The FoxPro Decompiler and Brander