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VB Decompiler 9.0
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VB Decompiler 9.0



Released:2012-07-06
License:$99.00
Publisher:DotFix Software
Language:English, French, German, Italian, Portuguese, Russian, Slovak, Spanish
Platform:Vista, Windows, Mobile
Requirements:Intel/AMD processor 1.8Ghz or higher, 256Mb of free RAM
Install:Install and Uninstall
Downloads:10466
Recommend VB Decompiler Suggest to Friend

Publisher's Description:

VB Decompiler - VB Decompiler is decompiler for programs (EXE, DLL or OCX) written in Visual Basic 5.0 and 6.0 and disassembler for programs written on .NET technology. As you know, programs in Visual Basic can be compiled into interpreted p-code or into native code. .NET assembly always compiled to just in time compilable IL 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 and some functions will not be decompiled). VB Decompiler restores source code from p-code as much as possible precisely. And after some modifications you may try to compile generated code.

If a program was compiled into the native code, restoring full 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 and emulator. This powerfull engine try to decode most assembler instructions to most likely VB commands. Of course, it fails on some optimizations of assembler code and sometimes generate not correct instructions. But at this time this is a best way to analyze native code applications.

If a program was compiled to .NET assembly, decompiler will recovery all tables and modules in managed assembly and disassemble all methods, functions and events using IL disassembler. .NET FrameWork is not needed for decompilation. Decompilation supported on all Windows 32 bit operation systems.

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.

List of Changes:

Version 8.4 from 2012-01-25

Show all changes

Version 8.0 from 2010-08-28

- More additionals in P-Code and Native Code
- Unpacker engine highly improved
- Some bug fixes

Version 7.9 from 2010-03-04

- More additionals in P-Code and Native Code
- Unpacker engine highly improved, driver rewriten
- Some bug fixes

Version 7.4 from 2009-04-07

Disassembling .NET code. All Frameworks supported.
Export names to IDA via IDC script, HIEW names and to MAP file.

Version 7.2 from 2009-03-22

- New unpacker engine
- Version Check plugin for checking new versions of VB Decompiler
- Coprocessor emulation improved
- If "Add Address" is unchecked in "Options" you may only use disassembler mode
- New version of Show References plugin

Version 7.1 from 2009-02-19

- Control arrays decompilation in P-Code
- New unpacker engine
- Control Arrays events detection
- BugFix: Decode first section offset in dumped programs
- BugFix: Lcase and Ucase is not checked in type name
- BugFix: Error in decompiling Labels in Native Code

Version 7.0 from 2008-12-19

- New unpacker engine
- Help files changed
- "For Each" decompilation in Native Code
- Screen object
- Printer object
- Clipboard object
- vbGlobal parsing
- vbSingle type of data
- Dispatch vbaLate functions parser
- Clear FPU error checking and objects checking instruction in Native Code

Version 6.0 from 2008-10-28

- New unpacker engine
- Parameters detection in unknown P-Code procedures
- Visual Basic 4.0 32 bit forms decompilation
- FPU commands emulation
- BugFix: VB Decompiler now vorking in Windows 2008 Server without crashes
- BugFix: Form parsing if control has no id
- BugFix: Vars parser in Native Code

Version 3.9 from 2008-03-02

- Detecting type of property (Let, Set, Get)
- New powerful database for external ActiveX
- Recent files history list in File menu
- Detect events for UserControls
- Detection form properties in Native Code
- Detection standard controls properties in Native Code
- New DataBase packed format

Screenshot:

Decompiler of Visual Basic programs
 

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Latest User Reviews:

Darrenwright72 2011-07-03 16:14:24 #
Version: 8.2

It's not worked like I wanted it too. I wrote a program about 6 years ago in VB 6 to load commodore 64 roms into an emulator. I have just found a bug and wanted to fix it. Having moved to a different country 4 years ago I backed up all my programs and code. But it turns out that I backed up all, but my soft-64 code.

Your program de-compiled all the forms, but not the code, I would like to see the code and remake this program and fix my bug. I don't want to start again.

Please help Darren.



Thxmike 2011-06-03 13:36:54 #
Version: 8.2

The products UI is easy to use and fairly straight forward. However, the results that it provided did not assist me in any way. It only provided me with the assembly behind the dll and not the actual VB code I was looking for.



Fredbussiere 2010-10-15 03:18:51 #
Version: 8.0

didn't work for my .vbe file
ciao



Ssiegwald 2010-02-22 10:15:53 #
Version: 7.5

Downloaded fine and ran with out incident. It did not produce the output I was hoping for, and I could not map its results back to the .exe addresses it provided.



Bo Peng 2009-05-22 15:12:46 #
Version: 7.5

The demo version does not demonstrate the format of possible code (just suggest for using Pro version, it should display some fake code to show the format used by the pro version). I was not convinced that the pro version will display the code in the format that I can read.
I deleted the source code which contains last 2 weeks of my work and I have only the executable. So I need to have a tool which could provide me more details so that I can recover my lost code.



Jamesbartlett 2009-03-09 05:08:10 #
Version: 7.1

no good

I tried the free version but it did not do what I wanted - decompile to something I could load into VB6 to try and recover a programme I have lost the source code for. I will not buy the full version unless I can try it first to see if it does what I want.



Vitor.rodrigues 2009-03-01 14:40:56 #
Version: 7.1

Not Complete Decompiler

It works in parts, but not 100% decompile the code leaving some pieces of code difficult to understand because they are in assembler. But what is promised to those who need a minimum of decompilation is a great tool.



Polonet 2008-12-18 11:02:11 #
Version: 6.0

Decompiler on Windows Server 2008‏

Hi,

I can't execute your decompilador on my windows server 2008.
What can I do to achieve run?

Regards



Bruce.palmer 2008-05-21 21:41:18 #
Version: 3.9

VB Decompiler worked fine

Used the decompiler to track program flow through a VB6 exe file, to assist documenting a program bug that had been observed, after the software vendor was unable to replicate the problem.
Decompiler worked fine and installed ok.
A once-off use of the trial vesion.



Pollux 2008-04-20 20:46:58 #
Version: 3.9

It will hang?

When I try to decompiler some .dll files, it will hang -- system take very long time to process, but never finish the job...
I'v been try for three different .dll files, two of them will hang.



BC.AK 2007-11-10 08:50:46 #
Version: 3.9

Works not bad

It's OK, the programme extracts the form names and structure of the VB programme. But as U mentioned for DEBUGGING some RUN TIME ERRORRS it is not providing the details of SOURCE CODE.



Abofazl 2007-03-11 03:50:45 #
Version: 3.9

it does not do what we want!

I test it by some VB6 programs, but it does not work properly!
It creates forms and project but NO codes!



decompiler 2007-02-26 09:11:45 #
Version: 3.9

tunning

I have use in order to try the decompiler, but i have not what i was expected, program still have some assembly language



Ansewer of VB Decomp 2006-11-20 05:13:45 #
Version: 3.9

VB Decompiler 2.7 Review

Thank for a good product.
I have tested for one of my exe creted fron vb6.0.
It got successfully dcompled,
but when i started to complie it again fron my VB6.0, It was giving
'Memory overflow' ERROR.
I am having 256 mb ram of win2003 server edition OS on a PIII 700 Mhz PC.

I would like to know that the same (or after a minor change of any object from any vb-form, not code change) project will be created again and can run fully as it was earler ?

Please send me guidence on these. Then only I can Review the product truely.

Thaking you,

Mahendra Mahidadia


Author's Response:
VB Decompiler is only partially decompile code and only in Pro version. Compiling result code is not possible. Use VB Decompiler only to find bugs in your programs and for analyze code.


NStorm 2006-08-12 13:42:41 #
Version: 3.9

Nice Vb Decompiler

I lost sources of my VB6 project, compiled to P-Code. Pro verion of this tool recover more of needed code and save it to VB format. big thanx to authors for this great product.


Author's Response:
Thank you.


El Bandido 2006-08-01 14:07:47 #
Version: 3.9

Trial version

Forms were satisfactorily decompiled, classes were partially decompiled and controls were not at all. Maybe I haven't fully understood the differences between trial and full version, but I expected to have an idea about how controls were decompiled.
My final goal was being able to edit a Dll whose source code I haven't ever seen, even if in Assembler language. This way I cannot.
Maybe there's a too strict limit in the trial version.


Author's Response:
Pro version decompile P-Code to source! native code onlly disassembled.



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File Size: 4.6 Mb
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