// Professional tool · Visual Basic 5 & 6

Recover the
source code
of any VB app

VBReFormer is the only all-in-one recovery suite for Visual Basic 5 & 6 — disassembler, decompiler and compiled-UI editor in a single tool. Supported binary formats : .exe · .dll · .ocx · .scr

Get a license · from 59 € Try for free Explore features

The Free edition shows what can be recovered from your binary — before you buy.

Coming soon: full P-Code decompilation, type and variable-name inference

Since 2000 · 25+ years ·

European by design. Local by default.

                
                
                vbreformer — decompile Form1.exe
[ x86 Assembly ]
                [ VB6 Source ]
00155                 push  ebp
0028B EC              mov   ebp, esp
00383 EC 4C           sub   esp, 4Ch   ; frame + SEH
0048B 75 08           mov   esi, [ebp+8]   ; Me
00568 B8 20 40 00     push  offset aForm1   ; "Form1"
0068D 45 E8           lea   eax, [ebp-18h] ; &var_18
00750                 push  eax
008FF 15 18 10 40 00  call  ds:__vbaStrCopy ; var_18 = "Form1"
0098B 06              mov   eax, [esi]     ; Me → vtable
010FF 90 FC 02 00 00  call  [eax+2FCh]     ; put_Caption
011FF 15 20 10 40 00  call  ds:__vbaHresultCheckObj
012FF 15 28 10 40 00  call  ds:__vbaLenBstr ; Len(var_18)
01385 C0              test  eax, eax
01474 2D              jz    short loc_ret ; Len 0 → Exit Sub
015FF 15 34 10 40 00  call  ds:rtcMsgBox    ; MsgBox "Prêt"
0168D 45 E8           lea   eax, [ebp-18h] ; loc_ret:
017FF 15 10 10 40 00  call  ds:__vbaFreeStr ; free var_18
018C2 04 00           retn  4            ; End Sub
Private Sub Form_Load()
Dim var_18 As String
var_18 = "Form1"
Me.Caption = var_18
If Len(var_18) = 0 Then Exit Sub
MsgBox "Prêt", vbOKOnly
End Sub
' noms de contrôles, propriétés et littéraux récupérés ·
' noms de variables locales générés (non stockés en natif)
● SCANNING BINARY
                    ● VB6 SOURCE RECOVERED
                Form_Load · native · MSVBVM60

743,219+

downloads

1,700+

licenses sold

25+

years of expertise

A trusted European software vendor

VBReFormer has been designed, built and maintained in France since 2000 — EU jurisdiction, GDPR compliance, and a fully European supply chain.

Designed in Toulouse (Haute-Garonne) and Savoie

Made in France EU jurisdiction · GDPR Independent vendor · est. 2000 See the comparison

// Three tools in one

What VBReFormer does

VBReFormer is the only all-in-one recovery suite for Visual Basic 5 & 6 — disassembler, decompiler and compiled-UI editor in a single tool.

// Disassembler — Identifies every procedure, form, module and class inside your compiled binary. Converts machine code into readable assembly with full syntax highlighting.
// Decompiler — Converts Native Code binary back into Visual Basic source. Recovers runtime calls, variable declarations and object interactions — up to 80 % of the original logic.
// Design Editor — Edit the compiled UI directly — no size limitation. The only tool on the market that does this without recompilation.
// Forms, Modules, Classes, UserControls
// Assembly language output

Explore features →

// Supported binary formats

.exe Executable

.dll Library

.ocx ActiveX Control

.scr Screensaver

VB5 Visual Basic 5

VB6 Visual Basic 6

Windows XP · Vista · 7 · 8 · 8.1 · 10 · 11

// Three tools in one

Decompiler

Converts Native Code binary back into Visual Basic source. Recovers runtime calls, variable declarations and object interactions — up to 80 % of the original logic.

Disassembler

Identifies every procedure, form, module and class inside your compiled binary. Converts machine code into readable assembly with full syntax highlighting.

//Forms, Modules, Classes, UserControls
//Assembly language output
//Search engine across disassembly

Explore features →

Most powerful

Decompiler

Converts Native Code binary back into Visual Basic source. Recovers runtime calls, variable declarations and object interactions — up to 80 % of the original logic.

//Native Code → VB6 source
//15,000+ Win32 API declarations
//~80 % object interaction recovery

Explore features →

Unique on market

Design Editor

Edit the compiled UI directly — no size limitation. The only tool on the market that does this without recompilation.

//Edit .frm, .ctl, .ocx in-place
//Replace embedded resources
//No size limit (unique)

Explore features →

// Simple process

How it works

Step 01

Load your binary

Open any VB5/VB6 .exe, .dll, .ocx or .scr file. VBReFormer instantly analyses the PE structure and identifies all VB objects.

Step 02

Explore & decompile

Browse the disassembled code, recover UI design files, and run the decompiler on Native Code procedures.

Step 03

Export & rebuild

Export recovered .frm, .bas and .cls files back into a new VB project. Edit the binary UI without recompilation.

// Sovereignty & data residency 🇫🇷 Made in France 🇪🇺 EU jurisdiction · GDPR

A decompiler you fully control

VBReFormer is desktop software that installs and runs entirely on your own Windows machines. The binaries you analyze stay within your infrastructure — from the first byte to the last.

100% on-premise

No cloud, no upload, no telemetry. Your binaries never leave your infrastructure — analysis happens entirely on your machine, even fully offline.

European origin and jurisdiction

Edited and developed in France, VBReFormer falls under EU jurisdiction and is backed by EU-based support. You control where your tools come from.

GDPR-aligned by design

Because nothing is transmitted, there is no third-party data processing to account for. A clean, auditable footprint that fits regulated environments.

For defense, government and critical-infrastructure teams, the origin and jurisdiction of a tool are part of the requirement. VBReFormer answers both.

// Partners

A French ecosystem of reverse engineering and cybersecurity.