| Tool | Best for | Cost | |------|----------|------| | VB Decompiler (modern v11+) | All VB6, forms + code | Commercial | | ReFox (for FoxPro) | FoxPro-to-VB conversions | Commercial | | dnSpy (for .NET) | VB.NET only | Free | | IDA Pro + VB6 script plugin | Native code (extremely manual) | Expensive | | VBRezQ (open source) | Basic P-Code extraction | Free (abandoned) |
Analyzing the logic of old VB6 software to facilitate porting it to modern platforms like .NET or web-based environments.
VB Decompiler 1.15 excelled at P-Code reconstruction, but it also introduced improved heuristics for Native Code.
| Feature | Native Code | P-Code | |---------|-------------|--------| | Output | x86 machine code | Interpreted bytecode | | Decompilation difficulty | Hard (requires disassembly) | Easier (bytecode maps to VB constructs) | | Speed | Fast | Slower | | Protection against reverse engineering | Moderate | Very low |
Automatically reconstructs forms and controls from the binary. VB Decompiler Version 11.x Series Enhancements
Users can now view the module name, assembly name, and assembly references directly in the project window after decompilation.