TeamViewer 11 < 13 (Windows 10 x86) - Inline Hooking / Direct Memory Modification Permission Change (PoC)

EDB-ID: 43366
Author: gellin
Published: 2017-12-04
CVE: N/A
Type: Local
Platform: Windows
Aliases: N/A
Advisory/Source: Link
Tags: N/A
Vulnerable App: N/A

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[![License](http://img.shields.io/badge/license-MIT-green.svg)](https://github.com/gellin/TeamViewer_Permissions_Hook_V1/blob/master/LICENSE)

**A proof of concept injectable C++ DLL, that uses naked inline hooking and direct memory modification to change TeamViewer permissions.**

## Features
* **As the Server** - Enables extra menu item options on the right side pop-up menu. Most useful so far to enable the "switch sides" feature which is normally only active after you have already authenticated control with the client, and initiated a change of control/sides.
* **As the Client** - Allows for control of mouse with disregard to servers current control settings and permissions.

## Demo

#### As the Server
![](https://raw.githubusercontent.com/gellin/TeamViewer_Permissions_Hook_V1/84b3aecd8f65f138989d460740b52195f0b1e1ac/server_switch_sides.gif)

#### Client
![](https://raw.githubusercontent.com/gellin/TeamViewer_Permissions_Hook_V1/84b3aecd8f65f138989d460740b52195f0b1e1ac/client_takes_control.gif)

## Rundown
* Utilizes signature/pattern scanning to dynamically locate key parts in the code at which the assembly registers hold pointers to interesting classes. Applies inline naked hooks a.k.a code caves, to hi-jack the pointers to use for modification via direct memory access to their reversed classes.
* Inject and follow the steps

## Requirements
* Your favorite Manual Mapper, PE Loader, DLL Injector, inject into - "TeamViewer.exe"
* This version was Built on Windows 10, for TeamViewer x86 Version 13.0.5058 - (Other versions of TeamViewer have not been tested but with more robust signatures it may work, linux not supported)

## Disclaimer
* Developed for educational purposes as a proof of concept for testing. I do not condone the or support the use of this software for unethical or illicit purposes. No responsibility is held or accepted for misuse.

## Credit
[@timse93](https://github.com/timse93) - Research and Testing

## EDB-Note
Download ~ https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/bin-sploits/43366.zip

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