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Flag: Tornado! Hurricane!

Created: Wednesday, December 16 2009 14:57.00 CST

Modified: Wednesday, December 16 2009 16:09.09 CST

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dwtf released!

Author: Dreg

# Views: 4808

dwtf creates a fake.dll from real.dll

Features:

1- It exports all symbols of real.dll (also Forwarder).

2- It imports all exports of real.dll (also Forwarder).

3- It creates an area code with a JMP DWORD [ADDRESS] for each export.

4- The exports of fake dll is assigned to a JMP area which jumps to original export of real.dll.

Download: http://rootkitanalytics.com/userland/dwtf.php

For more complex information visit my post in rootkit.com:

Generating any DLL for PEB Hooking or replacing in disk, binary form:
http://www.rootkit.com/blog.php?newsid=988

If you are making PEB HOOKING, when the APP calls to fake dll export it jumps to original export, everything works fine:
Before PEB HOOKING:
APP -> IAT OF APP -> REAL DLL EXPORT

After PEB HOOKING:
APP -> IAT OF APP -> FAKE DLL EXPORT -> IAT OF FAKE DLL -> REAL DLL EXPORT

You can add or remove payloads with any IAT HOOKING in the IAT of the fake dll:
APP -> IAT OF APP -> FAKE DLL EXPORT -> IAT OF FAKE DLL -> PAYLOAD STACK -> (or never) REAL DLL EXPORT

Syntax: dwtf.exe fake_dll real_dll

Example: dwtf.exe k32.dll c:\windows\system32\kernel32.dll

Sincerely, Dreg.

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