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How To Create Virtual File ?

Featured Replies

Posted

Hi My Friends

How To Create Virtual Executable File With VB Or VC++ And Run It ?

Please Help Me

Tnx :wub:

What exactly are you trying to do? Load a file from resources that can execute?

  • Author
What exactly are you trying to do? Load a file from resources that can execute?

Hi What

No , For Example I Want Decrypt A Hashed File Into Memory And Execute It Without Create Any File In Hard Drive For Decrypting Hashed File

May You Help Me Dear ? :wub:

I think you need to understand what you want to do better - What's suggestion sounds exactly what you are trying to do to me :)

Some friends did a similar thing for Linux/ELF long time ago:

http://www.phrack.com/issues.html?issue=63&id=11#article

Basically you need to "emulate" the work done by the PE loader. You can do a full emulation, or maybe you can just hook/attach the loader and replace the LoadImageFromDisk with a LoadImageFromBuffer (metaphorically speaking, of course).

Hope it helps.

Since this technique is mostly used for malware purposes, I won't give you that many details (assuming you're after that purpose only). Create a second process and unmap it completely, then go on by writing the new data into it and aligning it properly. You'll need to suspend and resume that process, playing around with it's context...

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