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Search - "fork-bomb"
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Tonight, I had the pleasure of being challenged to make a virus for a VM over at the awesome "virus aquarium": computernewb.com
I present to you the Eevee fork/bomb.
Tonight, was the first night where I've ever sat down and programmed in VBS. I had a lot of fun doing it too. Right now I'm aiming at corrupting taskkill, tskill, and shutdown for good measure. These are a few of the things that my buddy has pulled on me that has made it difficult for me to continue moving forward.
The other part is to create seperate .exe files that would run my the necessary script. Each of these .exe files will be unique such that it's more difficult to shut all of them down at once.
Despite the fact that this thing will quite literally break your computer, it's fun being challenged to think outside of the box. Quite literally. I've always been careful about what things I touched on a PC, but tonight was fun because I was basically unchained and allowed to run rampant.
As a computer geek I think it's good to let out your inner demon and see what havoc one could wreak.11 -
This tini tiny forky bomby is so cute than you probably want to execute it... at least in a VM / Container.13
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Just got my first IT job (I'm 19 y/o)
I am a C# programming teacher now :D for teens aged 15-18
I like it but I've had the chance to give the first lecture and there's this kid
Who is constantly interrupting
"Excuse me, programming is boring, when will you tell us how to break passwords"
"Excuse me, I have this neighbour I don't like, how do I put his printer on fire using code?"
"Excuse me, so we now know what classes are but can you tell us how to run fork bomb on system startup?"
afohsdofhidsfoidfsg
I suppose the kid will be becoming famous here over time
Also, out of rant, what do you wish your lecturers said to you when you were just getting started?17 -
:(){ :|:& };:
Even though bash isn't my favourite language, the fork bomb in this form is simply poetry.7 -
My biggest enemy is what i call "development fork bomb".
My boss duplicates code on a daily basis. Instead of creating subclasses he simply creates new files by copying lines from other files. The projects class hierarchy is as flat as holland.
You can take a comment, do a project-wide search and you will find 3+ matches, an ugly hack i wrote exists 4 times in the project, and so on.
Worst of all, we spend more time on bugfixes than refactoring. With my power i could add a commit-hook to block or lessen this behaviour, but i cant. There's no program that can detect this reliably and sometimes it needs to be done.
This is a curse i'm stuck with appearently.6 -
So I'm writing some multithreaded shit in C that is supposed to work cross-platform. MingW has Posix threads for Windows, so that saved already half of the platform dependency. The other half was that these threads need to run external programs.
Well, there's system(), right? Uhm yes, but it sucks. It's incredibly slow on Windows, and it looks like you can have only one system() call ongoing at the same time. Which kinda defeats the multithreaded driver. Ok, but there's CreateProcessA(), and that doesn't suck.
Fine, now for Linux. The fork/exec hack is quite ugly, but it works and is even fast. Just never use fork() without immediate exec(). First try under Cygwin... crap I fork bombed my system! What is this shit? Ah I fucked up the path names so that the external executable couldn't be run.
Lesson learnt: put an exit() right after the exec() in the path for child process. Should never be reached, but if it goes there, the exit() at least prevents a fork bomb.
Well yeah, sort of works under Cygwin, but only with up to 3 threads. Beyond that, it seems like fork() at some point gives two processes the same PID, and then shit hangs.
Even slapping a mutex around the fork and releasing it only in the parent process didn't help. Fork in Cygwin is like a fork in the ass. posix_spawn() should work better because it can be mapped more easily to the Windows model, but still no dice.
OK, testing under real Linux. Yeah, no issues with that one! But instead, I get some obscure "free(): invalid size" abort. What the fuck would that even mean?! Checking my free() calls: all fine.
Time to fire up GDB in the terminal! Put a catch on the abort signal, mh got just hex data. Shit I forgot to compile with -O0 and -g. Next try. Backtrace shows the full call trace, back to the originating line in my program - which is fclose() on a file.
Ahhh I remember! Under Linux, fclosing a file that is already closed makes the program crash. So probably I was closing it twice. Checking back.. yeah that's where it was.
Shit runs fast on several cores now!8 -
This is the most terrifying & horribly beautiful code ever.
:(){ :|:& };:
*please don't try running it if you don't know what you are doing.5 -
Meanwhile I reach 175 +1's I'm playing with my own custom stress ball with a bash fork bomb on it :]
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alias cd='open http://itisamystery.com; cd'
We once tried to add in a sleep in there, so it would delay opening up the website for a few minutes, but it would cd immediately, as to not alert the victim to the trigger.
First time we tried it, it totally did not work as expected. He tried running npm install first thing, and it was like a fork bomb with all of these sleeping threads.
Comment below if you have a good fix! I'm no Linux ninja. Oh, I'd also like to know a good Linux version of this since open is a Mac thing.2 -
I wish I could do aliases on windows like doing on linux. I would alias shutdown with a fork bomb.4
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That moment when you are doing systems programming and accidentally fork bomb yourself.
Please ctrl-save, please ctrl-save, please ctrl-save! -
I've been successful to achieve this without executing a fork bomb. A buggy library, doesn't care about their children.
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Replaced all the aliases with fork bombs in my colleague's laptop when he left it unlocked and unattended last Friday.
Hope to hear about the casualties next Monday.
Good old fork bomb -
I came across this code snippet on Quora, and I tried crashing the Codeforces server (strictly for educational purposes). But this thing wouldn’t compile, either because fork() was not declared in the scope, or the file <unistd.h> was not found. I tried it on different C++ machines. What is the fix for this ?6