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#include "hydra-mod.h"
extern char *HYDRA_EXIT;
char *buf;
int start_ftp(int s, char *ip, int port, unsigned char options, char *miscptr, FILE * fp) {
char *empty = "\"\"";
char *login, *pass, buffer[510];
if (strlen(login = hydra_get_next_login()) == 0)
login = empty;
if (strlen(pass = hydra_get_next_password()) == 0)
pass = empty;
sprintf(buffer, "USER %.250s\r\n", login);
if (hydra_send(s, buffer, strlen(buffer), 0) < 0) {
return 1;
}
buf = hydra_receive_line(s);
if (buf == NULL)
return 1;
/* special hack to identify 530 user unknown msg. suggested by Jean-Baptiste.BEAUFRETON@turbomeca.fr */
if (buf[0] == '5' && buf[1] == '3' && buf[2] == '0') {
hydra_completed_pair_skip();
if (memcmp(hydra_get_next_pair(), &HYDRA_EXIT, sizeof(HYDRA_EXIT)) == 0)
return 4;
free(buf);
return 1;
}
// for servers supporting anon access without password
if (buf[0] == '2') {
hydra_report_found_host(port, ip, "ftp", fp);
hydra_completed_pair_found();
if (memcmp(hydra_get_next_pair(), &HYDRA_EXIT, sizeof(HYDRA_EXIT)) == 0)
return 4;
free(buf);
return 1;
}
if (buf[0] != '3') {
if (buf) {
if (verbose || debug)
hydra_report(stderr, "[ERROR] Not an FTP protocol or service shutdown: %s\n", buf);
free(buf);
}
return 3;
}
free(buf);
sprintf(buffer, "PASS %.250s\r\n", pass);
if (hydra_send(s, buffer, strlen(buffer), 0) < 0) {
return 1;
}
buf = hydra_receive_line(s);
if (buf == NULL)
return 1;
if (buf[0] == '2') {
hydra_report_found_host(port, ip, "ftp", fp);
hydra_completed_pair_found();
if (memcmp(hydra_get_next_pair(), &HYDRA_EXIT, sizeof(HYDRA_EXIT)) == 0)
return 4;
free(buf);
return 1;
}
free(buf);
hydra_completed_pair();
if (memcmp(hydra_get_next_pair(), &HYDRA_EXIT, sizeof(HYDRA_EXIT)) == 0)
return 4;
return 2;
}
void service_ftp_core(char *ip, int sp, unsigned char options, char *miscptr, FILE * fp, int port, char *hostname, int tls) {
int run = 1, next_run = 1, sock = -1;
int myport = PORT_FTP, mysslport = PORT_FTP_SSL;
hydra_register_socket(sp);
if (memcmp(hydra_get_next_pair(), &HYDRA_EXIT, sizeof(HYDRA_EXIT)) == 0)
hydra_child_exit(0);
while (1) {
switch (run) {
case 1: /* connect and service init function */
if (sock >= 0)
sock = hydra_disconnect(sock);
// sleepn(300);
if ((options & OPTION_SSL) == 0) {
if (port != 0)
myport = port;
sock = hydra_connect_tcp(ip, myport);
port = myport;
} else {
if (port != 0)
mysslport = port;
sock = hydra_connect_ssl(ip, mysslport, hostname);
port = mysslport;
}
if (sock < 0) {
if (verbose || debug)
hydra_report(stderr, "[ERROR] Child with pid %d terminating, can not connect\n", (int) getpid());
hydra_child_exit(1);
}
usleepn(250);
buf = hydra_receive_line(sock);
if (buf == NULL || buf[0] != '2') { /* check the first line */
if (verbose || debug)
hydra_report(stderr, "[ERROR] Not an FTP protocol or service shutdown: %s\n", buf);
hydra_child_exit(2);
if (buf != NULL)
free(buf);
hydra_child_exit(2);
}
while (buf != NULL && strncmp(buf, "220 ", 4) != 0 && strstr(buf, "\n220 ") == NULL) {
free(buf);
buf = hydra_receive_line(sock);
}
free(buf);
//this mode is manually chosen, so if it fails we giving up
if (tls) {
if (hydra_send(sock, "AUTH TLS\r\n", strlen("AUTH TLS\r\n"), 0) < 0) {
hydra_child_exit(2);
}
buf = hydra_receive_line(sock);
if (buf == NULL) {
if (verbose || debug)
hydra_report(stderr, "[ERROR] Not an FTP protocol or service shutdown: %s\n", buf);
hydra_child_exit(2);
}
if (buf[0] == '2') {
if ((hydra_connect_to_ssl(sock, hostname) == -1) && verbose) {
hydra_report(stderr, "[ERROR] Can't use TLS\n");
hydra_child_exit(2);
} else {
if (verbose)
hydra_report(stderr, "[VERBOSE] TLS connection done\n");
}
} else {
hydra_report(stderr, "[ERROR] TLS negotiation failed %s\n", buf);
hydra_child_exit(2);
}
free(buf);
}
next_run = 2;
break;
case 2: /* run the cracking function */
next_run = start_ftp(sock, ip, port, options, miscptr, fp);
break;
case 3: /* error exit */
if (sock >= 0)
sock = hydra_disconnect(sock);
hydra_child_exit(2);
case 4: /* clean exit */
if (sock >= 0)
sock = hydra_disconnect(sock);
hydra_child_exit(0);
default:
hydra_report(stderr, "[ERROR] Caught unknown return code, exiting!\n");
hydra_child_exit(2);
}
run = next_run;
}
}
void service_ftp(char *ip, int sp, unsigned char options, char *miscptr, FILE * fp, int port, char *hostname) {
service_ftp_core(ip, sp, options, miscptr, fp, port, hostname, 0);
}
void service_ftps(char *ip, int sp, unsigned char options, char *miscptr, FILE * fp, int port, char *hostname) {
service_ftp_core(ip, sp, options, miscptr, fp, port, hostname, 1);
}
int service_ftp_init(char *ip, int sp, unsigned char options, char *miscptr, FILE * fp, int port, char *hostname) {
// called before the childrens are forked off, so this is the function
// which should be filled if initial connections and service setup has to be
// performed once only.
//
// fill if needed.
//
// return codes:
// 0 all OK
// -1 error, hydra will exit, so print a good error message here
return 0;
}
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