[Tutorial] [VB.Net] Making a Builder and Stub Program

VB.Net Tutorial - Making a Builder and Stub using IO.File operations

Contents:

• Introduction
  
• Form Design
  
• Coding
  

Introduction

A User-generated application, or a builder and a stub combination is mainly used when you need userinputs in a new PC whose user does not have any idea what that app may do.

There are three names used in Builder-stub system for applications:

• Builder
  
• Stub
  
• Server (or Output)
  

Builder is the application a User operates and inputs his info which is used by Stub.
Stub is the application which should NOT even be touched by the User. Builder uses the Stub to give an Output, a new application commonly known as "Server".
Server is the final output. Ready to spread.

Why should I keep stub?
Your output is >90% Stub
This is how it goes:

Stub Application + User Settings = Server Application

Form Design

This is the easiest and the shortest part.

What do you need?

• Visual Basic .Net Beginner knowledge
  
• Some time.
  
• And of course, Visual Studio for working in Visual Basic .Net
  

In this Tutorial, we will make 2 Programs: Builder and Stub

Builder:



Controls needed:

• TextBox = 2
  
• Button = 1
  

Stub:


No controls needed.
In fact, you don't even need a Form, you can just use a Class Module if you know how to, otherwise don't worry Form will do ok.

Coding

Now comes the hardest part, but I would also add, the more interesting part.

In your Builder form enter this code.

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim theStub As String = CurDir() & "\stub.exe" 'Stub should be in Builder's Directory
If IO.File.Exists(theStub) = False Then 'If it's not then
MsgBox("No Stub Found", MsgBoxStyle.Exclamation) 'display a message
Exit Sub 'and Exit the rest of the Sub
End If
IO.File.Copy(theStub, CurDir() & "\server.exe") 'Copy stub as Server
IO.File.AppendAllText(CurDir() & "\server.exe", "FileSplit" & TextBox1.Text & "FileSplit" & TextBox2.Text) 'Add user-settings to Server with a FileSplit
End Sub

Great you are half-way there!.

Now enter this code in your Stub form:

Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim BinText As String = IO.File.ReadAllText(Application.ExecutablePath) 'Read All Text in Itself and store in variable BinText
If BinText.Contains("FileSplit") = False Then Exit Sub 'If there is the same Builder's FileSplit then
Dim ArrContents() As String = Split(BinText, "FileSplit") 'Store BinText splitted by FileSplit

For num As Integer = 1 To UBound(ArrContents) 'Loop through each element in ArrContents except 0, which is useless for us here
MsgBox(ArrContents(num)) 'Show a MessageBox for the UserInputted Text in Builder
Next
End Sub

Well done, you are done with both.
Now build them, put them in same directories, and test the Builder. :smile:

Have a great day. :thumbs:

THAAAAAAAAAAAAAAAAAAANKS!!!!!

tnx but i already know how to make a stub after a month :tongue:

btw this is a better then the stupid EOF LOF and the normal stub making since this is a simple Appendalltext

Glad you like it.

i am still learning this :tongue: NO COMMENTS!

ment to rate this 5 but did 1 by accident xD

so ill comment aswell :biggrin:

nice tut

nice tut! Thank you for sharing with us.
Leson 2 Haw to make a fud crypter? :tongue:

oh my god :o
really epic

is this for a keylogger?

Yes, a user-generated application system can be used in making a Keylogger.