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VB Decompiler
VB Decompiler intended for decopiling applications developed using VisualBasic 5.0/6.0. As far as you know such applications can be compiled into interpreted p-code or into native code.
Since p-code consists of high-level commands, there is a real possibility to decompile it into the source code (of course, the names of variables, functions, etc. will not be decompiled). VB Decompiler restores many p-code instructions and although there is a long way to the generation of the source code that can be compiled, the decompiler will make analyzing the program algorithm much easier and partially restore its source code.
P-Code Example
If a program was compiled into the native code, restoring the source code from machine instructions is not possible. But VB Decompiler can help to analyze the program even in this situation as well. It contains a powerful disassembler that supports Pentium Pro commands including MMX and SSE. It allows you to disassemble all functions. There is also a code analyzer that searches for all API function calls and string references in the disassembled code and changes them into comments for analyzed strings.
Native Code Example
In general, VB Decompiler is an ideal tool for analyzing programs and it is perfect if you lose the source code and need to partially restore the project.
VB Decompiler has 2 different versions: Lite and Pro
| Features of VB Decompiler | Lite | Pro |
| Universal unpacking for packed applications (supported UPX, NSPack and more other popular EXE packers) |  |  |
| Decompiling forms (frm and frx) and usercontrols (ctl) object
files |  |  |
| Fully p-code decompiling (with parsing opcodes to standart vb instructions, with decompile GUID objects) |  |  |
| 2 p-code decompiling modes (with stack parsing or without stack parsing) |  |  |
| Disassembling native code procedures (with power Pentium Pro disassembler, supporting MMX and FPU instruction sets) |  |  |
| Disassembling native code procedures with String References and API Calls (with power Pentium Pro disassembler, supporting MMX and FPU instruction sets) |  |  |
| Partially decompiling native code (using code emulation engine) |  |  |
| Syntax coloring in decompiled code |  |  |
| String reference list and search engine |  |  |
| Fast decompiling speed |  |  |
| Obfuscator for VB5/6 programs |  |  |
| Patcher for VB5/6 programs |  |  |
| Save decompiled data to single DB file |  |  |
Price |  |  |
Minimum System Requirements: Pentium 166, 32Mb RAM, Windows 95/98/ME/2k/XP/2003/Vista
Screenshots of VB Decompiler Pro:
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