join/bind 2 exe files

Can any one help me here
I want join 2 exe files together,create new file is = join of two.if I open new file then both should be excuited
But i am fail still

my code problem here

using System;
using System.Windows.Forms;
using System.IO;

namespace Bind
{
public class Bind
{
[STAThread]
private static void Main ()
{
string dir = Application.StartupPath + "\ \";

FileStream fs1 = File.OpenRead (dir + "1.exe");
FileStream fs2 = File.OpenRead (dir + "2.exe");

byte [] p1 = new byte [fs1.Length];
fs1.Read (p1, 0, (int) fs1.Length);

byte [] p2 = new byte [fs2.Length];
fs2.Read (p2, 0, (int) fs2.Length);

FileStream fs3 File.Create = (dir + "3.exe");

fs3.Write (p1, 0, p1.Length);
fs3.Write (p2, 0, p2.Length);

return;
}
}
}

Right. Simply byte-wise concatenating two exe's will not succeed. You can merge two .NET assemblies using ILMerge: https://research.microsoft.com/en-us...t/ilmerge.aspx

Quote:

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Originally Posted by BioPhysEngr

Right. Simply byte-wise concatenating two exe's will not succeed. You can merge two .NET assemblies using ILMerge: https://research.microsoft.com/en-us...t/ilmerge.aspx

---

thanks you sir BIOPHYSENGR
but still can not get it.why its not possible simply as I done

Executables have a specific format, just like any common file type. You also couldn't, for example, take two images and concatenate them together merely byte-wise contatenating them. Each file contains some header data that is expected at the beginning of an image. Finding a header half way through is unexpected and would likely be interpreted as a sign of data corruption. However, you could use a new program to write a NEW header telling the computer to expect a longer data region that happened to contain the information required for both images. Back to executables - an analogous situation is in effect - .NET executbles follow an extended version of the PE format, see https://en.wikipedia.org/wiki/PE_for..._the_PE_format

Quote:

---

Originally Posted by BioPhysEngr

Executables have a specific format, just like any common file type. You also couldn't, for example, take two images and concatenate them together merely byte-wise contatenating them. Each file contains some header data that is expected at the beginning of an image. Finding a header half way through is unexpected and would likely be interpreted as a sign of data corruption. However, you could use a new program to write a NEW header telling the computer to expect a longer data region that happened to contain the information required for both images. Back to executables - an analogous situation is in effect - .NET executbles follow an extended version of the PE format, see https://en.wikipedia.org/wiki/PE_for..._the_PE_format

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thank you so much sir,thanks a lot.now I understand.for extra can you make a binder example for me?if not than also thank you,i am gona study more about that.currently im student

@yousufshah, what would be the benefit of combining two exe's into one as you've suggested?

Quote:

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Originally Posted by Arjay

@yousufshah, what would be the benefit of combining two exe's into one as you've suggested?

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@Arajy. I want be a good security engineer , So these bad Trojans things I have to learn, after that I will study on antiViruse
I have some offers from Vsecure antivirus job.
Still I am fresh,and rejected at some interviews. So want learn more
Now started coding in C#
i done java,assembly,c .html, .net and some php
but I am still beginner.bc student at uni and no physical experiences.
hard time and short.so want learn more and more about trojans and viruses

If some 1 can make a source for me,I can pay him,

Quote:

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Originally Posted by BioPhysEngr

Right. Simply byte-wise concatenating two exe's will not succeed. You can merge two .NET assemblies using ILMerge: https://research.microsoft.com/en-us...t/ilmerge.aspx

---

i Just want join two files like in IExpress. drop/extract both files at @appdata and execute file #1 and file # 2

Ah, however, discussion of methods for creating viruses and other malicious programs is not permitted on this forum (see the AUP).

[ Thread closed ]