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/* mysql 3.2x.x to 4.x support - by mcbethh (at) u-n-f (dot) com */
/* david (dot) maciejak (at) gmail (dot) com for using libmysqlclient-dev, adding support for mysql version 5.x */
#include "hydra-mod.h"
#ifndef HAVE_MATH_H
#include <stdio.h>
void dummy_mysql() {
printf("\n");
}
void service_mysql(char *ip, int sp, unsigned char options, char *miscptr, FILE * fp, int port) {
printf("\n");
}
#else
#include <math.h>
#define DEFAULT_DB "mysql"
#ifndef LIBMYSQLCLIENT
#else
#include <mysql/mysql.h>
MYSQL *mysql = NULL;
#endif
void hydra_hash_password(unsigned long *result, const char *password);
char *hydra_scramble(char *to, const char *message, const char *password);
extern int internal__hydra_recv(int socket, char *buf, int length);
extern int hydra_data_ready_timed(int socket, long sec, long usec);
extern char *HYDRA_EXIT;
char mysqlsalt[9];
/* modified hydra_receive_line, I've striped code which changed every 0x00 to 0x20 */
char *hydra_mysql_receive_line(int socket) {
char buf[300], *buff, *buff2;
int i = 0, j = 0, buff_size = 300;
buff = malloc(buff_size);
if (buff == NULL)
return NULL;
memset(buff, 0, sizeof(buf));
i = hydra_data_ready_timed(socket, (long) waittime, 0);
if (i > 0) {
if ((i = internal__hydra_recv(socket, buff, sizeof(buf))) < 0) {
free(buff);
return NULL;
}
}
if (i <= 0) {
if (debug)
hydra_report_debug(stderr, "DEBUG_RECV_BEGIN||END\n");
free(buff);
return NULL;
}
j = 1;
while (hydra_data_ready(socket) > 0 && j > 0) {
j = internal__hydra_recv(socket, buf, sizeof(buf));
if (j > 0) {
if (i + j > buff_size || (buff2 = realloc(buff, i + j)) == NULL) {
free(buff);
return NULL;
} else {
buff = buff2;
buff_size = i + j;
}
memcpy(buff + i, &buf, j);
i += j;
}
}
if (debug)
hydra_report_debug(stderr, "DEBUG_RECV_BEGIN|%s|END\n", buff);
return buff;
}
/* check if valid mysql protocol, mysql version and read salt */
char hydra_mysql_init(int sock) {
char *server_version, *pos, *buf;
unsigned char protocol;
buf = hydra_mysql_receive_line(sock);
if (buf == NULL)
return 1;
protocol = buf[4];
if (protocol == 0xff) {
pos = &buf[6];
// *(strchr(pos, '.')) = '\0';
hydra_report(stderr, "[ERROR] %s\n", pos);
free(buf);
return 2;
}
if (protocol <= 10) {
free(buf);
return 2;
}
if (protocol > 10) {
fprintf(stderr, "[INFO] This is protocol version %d, only v10 is supported, not sure if it will work\n", protocol);
}
server_version = &buf[5];
pos = buf + strlen(server_version) + 10;
memcpy(mysqlsalt, pos, 9);
if (!strstr(server_version, "3.") && !strstr(server_version, "4.") && strstr(server_version, "5.")) {
#ifndef LIBMYSQLCLIENT
hydra_report(stderr, "[ERROR] Not an MySQL protocol or unsupported version,\ncheck configure to see if libmysql is found\n");
#endif
free(buf);
return 2;
}
free(buf);
return 0;
}
/* prepare response to server greeting */
char *hydra_mysql_prepare_auth(char *login, char *pass) {
unsigned char *response;
unsigned long login_len = strlen(login) > 32 ? 32 : strlen(login);
unsigned long response_len = 4 /* header */ +
2 /* client flags */ +
3 /* max packet len */ +
login_len + 1 + 8 /* scrambled password len */ ;
response = (unsigned char *) malloc(response_len + 4);
if (response == NULL) {
fprintf(stderr, "[ERROR] could not allocate memory\n");
return NULL;
}
memset(response, 0, response_len + 4);
*((unsigned long *) response) = response_len - 4;
response[3] = 0x01; /* packet number */
response[4] = 0x85;
response[5] = 0x24; /* client flags */
response[6] = response[7] = response[8] = 0x00; /* max packet */
memcpy(&response[9], login, login_len); /* login */
response[9 + login_len] = '\0'; /* null terminate login */
hydra_scramble((char *) &response[9 + login_len + 1], mysqlsalt, pass);
return (char *) response;
}
/* returns 0 if authentication succeed */
/* and 1 if failed */
char hydra_mysql_parse_response(unsigned char *response) {
unsigned long response_len = *((unsigned long *) response) & 0xffffff;
if (response_len < 4)
return 0;
if (response[4] == 0xff)
return 1;
return 0;
}
char hydra_mysql_send_com_quit(int sock) {
char com_quit_packet[5] = { 0x01, 0x00, 0x00, 0x00, 0x01 };
hydra_send(sock, com_quit_packet, 5, 0);
return 0;
}
int start_mysql(int sock, char *ip, int port, unsigned char options, char *miscptr, FILE * fp) {
char *response = NULL, *login = NULL, *pass = NULL;
unsigned long response_len;
char res = 0;
char database[256];
login = hydra_get_next_login();
pass = hydra_get_next_password();
if (miscptr)
strncpy(database, miscptr, sizeof(database) - 1);
else {
strncpy(database, DEFAULT_DB, sizeof(database) - 1);
if (verbose)
hydra_report(stderr, "[VERBOSE] using default db 'mysql'\n");
}
database[sizeof(database) - 1] = 0;
/* read server greeting */
res = hydra_mysql_init(sock);
if (res == 2) {
/* old reversing protocol trick did not work */
/* try using the libmysql client if available */
hydra_mysql_send_com_quit(sock);
sock = hydra_disconnect(sock);
#ifdef LIBMYSQLCLIENT
if (mysql == NULL) {
mysql = mysql_init(NULL);
if (mysql == NULL) {
hydra_report(stderr, "[ERROR] Insufficient memory to allocate new mysql object\n");
return 1;
}
}
/*mysql_options(&mysql,MYSQL_OPT_COMPRESS,0); */
if (!mysql_real_connect(mysql, hydra_address2string(ip), login, pass, database, 0, NULL, 0)) {
int my_errno = mysql_errno(mysql);
if (debug)
hydra_report(stderr, "[ERROR] Failed to connect to database: %s\n", mysql_error(mysql));
/*
Error: 1049 SQLSTATE: 42000 (ER_BAD_DB_ERROR)
Message: Unknown database '%s'
*/
if (my_errno == 1049) {
hydra_report(stderr, "[ERROR] Unknown database: %s\n", database);
}
if (my_errno == 1251) {
hydra_report(stderr, "[ERROR] Client does not support authentication protocol requested by server\n");
}
/*
http://dev.mysql.com/doc/refman/5.0/en/error-messages-server.html
Error: 1044 SQLSTATE: 42000 (ER_DBACCESS_DENIED_ERROR)
Message: Access denied for user '%s'@'%s' to database '%s'
Error: 1045 SQLSTATE: 28000 (ER_ACCESS_DENIED_ERROR)
Message: Access denied for user '%s'@'%s' (using password: %s)
*/
//if the error is more critical, we just try to reconnect
//to the db later with the mysql_init
if ((my_errno != 1044) && (my_errno != 1045)) {
mysql_close(mysql);
mysql = NULL;
}
return 3;
}
hydra_report_found_host(port, ip, "mysql", fp);
hydra_completed_pair_found();
if (memcmp(hydra_get_next_pair(), &HYDRA_EXIT, sizeof(HYDRA_EXIT)) == 0) {
mysql_close(mysql);
mysql = NULL;
return 3;
}
return 1;
#else
hydra_child_exit(2);
#endif
}
if (res == 1)
return 1;
/* prepare client authentication packet */
response = hydra_mysql_prepare_auth(login, pass);
if (response == NULL)
return 3;
response_len = *((unsigned long *) response) & 0xffffff;
/* send client auth packet */
/* dunny why, mysql IO code had problem reading my response. */
/* When I send response_len bytes, it always read response_len-4 bytes */
/* I fixed it just by sending 4 characters more. It is maybe not good */
/* coding style, but working :) */
if (hydra_send(sock, response, response_len + 4, 0) < 0) {
free(response);
return 1;
}
free(response);
/* read authentication response */
if ((response = hydra_mysql_receive_line(sock)) == NULL)
return 1;
res = hydra_mysql_parse_response((unsigned char *) response);
if (!res) {
hydra_mysql_send_com_quit(sock);
sock = hydra_disconnect(sock);
hydra_report_found_host(port, ip, "mysql", fp);
hydra_completed_pair_found();
free(response);
if (memcmp(hydra_get_next_pair(), &HYDRA_EXIT, sizeof(HYDRA_EXIT)) == 0)
return 3;
return 1;
}
free(response);
hydra_completed_pair();
if (memcmp(hydra_get_next_pair(), &HYDRA_EXIT, sizeof(HYDRA_EXIT)) == 0)
return 3;
/* each try requires new connection */
return 1;
}
void service_mysql(char *ip, int sp, unsigned char options, char *miscptr, FILE * fp, int port) {
int run = 1, next_run = 1, sock = -1;
int myport = PORT_MYSQL;
hydra_register_socket(sp);
if (memcmp(hydra_get_next_pair(), &HYDRA_EXIT, sizeof(HYDRA_EXIT)) == 0)
return;
while (1) {
switch (run) {
case 1: /* connect and service init function */
if (sock >= 0) {
hydra_mysql_send_com_quit(sock);
sock = hydra_disconnect(sock);
}
// usleep(300000);
if ((options & OPTION_SSL) == 0) {
if (port != 0)
myport = port;
sock = hydra_connect_tcp(ip, myport);
port = myport;
}
if (sock < 0) {
if (quiet != 1) fprintf(stderr, "[ERROR] Child with pid %d terminating, can not connect\n", (int) getpid());
hydra_child_exit(1);
}
next_run = 2;
break;
case 2: /* run the cracking function */
next_run = start_mysql(sock, ip, port, options, miscptr, fp);
break;
case 3: /* clean exit */
if (sock >= 0) {
hydra_mysql_send_com_quit(sock);
sock = hydra_disconnect(sock);
}
hydra_child_exit(0);
return;
default:
fprintf(stderr, "[ERROR] Caught unknown return code, exiting!\n");
hydra_child_exit(2);
}
run = next_run;
}
}
#ifndef LIBMYSQLCLIENT
#endif
/************************************************************************/
/* code belowe is copied from mysql 3.23.57 source code (www.mysql.com) */
/* and slightly modified (removed not needed parts of code, changed */
/* data types) */
/************************************************************************/
struct hydra_rand_struct {
unsigned long seed1, seed2, max_value;
double max_value_dbl;
};
void hydra_randominit(struct hydra_rand_struct *rand_st, unsigned long seed1, unsigned long seed2) { /* For mysql 3.21.# */
rand_st->max_value = 0x3FFFFFFFL;
rand_st->max_value_dbl = (double) rand_st->max_value;
rand_st->seed1 = seed1 % rand_st->max_value;
rand_st->seed2 = seed2 % rand_st->max_value;
}
double hydra_rnd(struct hydra_rand_struct *rand_st) {
rand_st->seed1 = (rand_st->seed1 * 3 + rand_st->seed2) % rand_st->max_value;
rand_st->seed2 = (rand_st->seed1 + rand_st->seed2 + 33) % rand_st->max_value;
return (((double) rand_st->seed1) / rand_st->max_value_dbl);
}
void hydra_hash_password(unsigned long *result, const char *password) {
register unsigned long nr = 1345345333L, add = 7, nr2 = 0x12345671L;
unsigned long tmp;
for (; *password; password++) {
if (*password == ' ' || *password == '\t')
continue; /* skipp space in password */
tmp = (unsigned long) (unsigned char) *password;
nr ^= (((nr & 63) + add) * tmp) + (nr << 8);
nr2 += (nr2 << 8) ^ nr;
add += tmp;
}
result[0] = nr & (((unsigned long) 1L << 31) - 1L); /* Don't use sign bit (str2int) */ ;
result[1] = nr2 & (((unsigned long) 1L << 31) - 1L);
return;
}
char *hydra_scramble(char *to, const char *message, const char *password) {
struct hydra_rand_struct rand_st;
unsigned long hash_pass[2], hash_message[2];
char extra;
if (password && password[0]) {
char *to_start = to;
hydra_hash_password(hash_pass, password);
hydra_hash_password(hash_message, message);
hydra_randominit(&rand_st, hash_pass[0] ^ hash_message[0], hash_pass[1] ^ hash_message[1]);
while (*message++)
*to++ = (char) (floor(hydra_rnd(&rand_st) * 31) + 64);
extra = (char) (floor(hydra_rnd(&rand_st) * 31));
while (to_start != to)
*(to_start++) ^= extra;
}
*to = 0;
return to;
}
#endif
int service_mysql_init(char *ip, int sp, unsigned char options, char *miscptr, FILE * fp, int port) {
// 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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