forked from shamun/c-hydra
/
hydra-ssh.c
153 lines (134 loc) · 4.28 KB
/
hydra-ssh.c
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/*
libssh is available at http://www.libssh.org
current version is 0.4.8
If you want support for ssh v1 protocol, you
have to add option -DWITH_SSH1=On in the cmake
*/
#include "hydra-mod.h"
#ifndef LIBSSH
void dummy_ssh() {
printf("\n");
}
#else
#include <libssh/libssh.h>
#if LIBSSH_VERSION_MAJOR == 0 && LIBSSH_VERSION_MINOR >= 4
ssh_session session = NULL;
extern char *HYDRA_EXIT;
int new_session = 1;
int start_ssh(int s, char *ip, int port, unsigned char options, char *miscptr, FILE * fp) {
char *empty = "";
char *login, *pass, keep_login[300];
int auth_state = 0, rc = 0, i = 0;
if (strlen(login = hydra_get_next_login()) == 0)
login = empty;
if (strlen(pass = hydra_get_next_password()) == 0)
pass = empty;
if (new_session) {
if (session) {
ssh_disconnect(session);
ssh_finalize();
ssh_free(session);
}
session = ssh_new();
ssh_options_set(session, SSH_OPTIONS_PORT, &port);
ssh_options_set(session, SSH_OPTIONS_HOST, hydra_address2string(ip));
ssh_options_set(session, SSH_OPTIONS_USER, login);
ssh_options_set(session, SSH_OPTIONS_COMPRESSION_C_S, "none");
ssh_options_set(session, SSH_OPTIONS_COMPRESSION_S_C, "none");
if (ssh_connect(session) != 0) {
//if the connection was drop, trying to reconnect
if (verbose)
hydra_report(stderr, "Error: could not connect to target port %d\n", port);
return 1;
}
if ((rc = ssh_userauth_none(session, NULL)) == SSH_AUTH_ERROR) {
return 3;
} else if (rc == SSH_AUTH_SUCCESS) {
hydra_report_found_host(port, ip, "ssh", fp);
hydra_completed_pair_found();
if (memcmp(hydra_get_next_pair(), &HYDRA_EXIT, sizeof(HYDRA_EXIT)) == 0)
return 2;
else
return 1;
}
} else
new_session = 1;
auth_state = ssh_auth_list(session);
if ((auth_state & SSH_AUTH_METHOD_PASSWORD) > 0) {
auth_state = ssh_userauth_password(session, NULL, pass);
} else if ((auth_state & SSH_AUTH_METHOD_INTERACTIVE) > 0) {
auth_state = ssh_userauth_kbdint(session, NULL, NULL);
while (auth_state == SSH_AUTH_INFO) {
rc = ssh_userauth_kbdint_getnprompts(session);
for (i = 0; i < rc; i++)
ssh_userauth_kbdint_setanswer(session, i, pass);
auth_state = ssh_userauth_kbdint(session, NULL, NULL);
}
} else {
return 4;
}
if (auth_state == SSH_AUTH_ERROR) {
new_session = 1;
return 1;
}
if (auth_state == SSH_AUTH_SUCCESS || auth_state == SSH_AUTH_PARTIAL) {
hydra_report_found_host(port, ip, "ssh", fp);
hydra_completed_pair_found();
if (memcmp(hydra_get_next_pair(), &HYDRA_EXIT, sizeof(HYDRA_EXIT)) == 0)
return 2;
return 1;
} else {
strncpy(keep_login, login, sizeof(keep_login) - 1);
keep_login[sizeof(keep_login) - 1] = '\0';
hydra_completed_pair();
if (memcmp(hydra_get_next_pair(), &HYDRA_EXIT, sizeof(HYDRA_EXIT)) == 0)
return 2;
login = hydra_get_next_login();
if (strcmp(login, keep_login) == 0)
new_session = 0;
return 1;
}
/* not reached */
return 1;
}
void service_ssh(char *ip, int sp, unsigned char options, char *miscptr, FILE * fp, int port) {
int run = 1, next_run = 1, sock = -1;
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 */
next_run = start_ssh(sock, ip, port, options, miscptr, fp);
break;
case 2:
ssh_disconnect(session);
ssh_finalize();
ssh_free(session);
hydra_child_exit(0);
case 3:
ssh_disconnect(session);
ssh_finalize();
ssh_free(session);
fprintf(stderr, "Error: ssh protocol error\n");
hydra_child_exit(2);
case 4:
ssh_disconnect(session);
ssh_finalize();
ssh_free(session);
fprintf(stderr, "Error: ssh target does not support password auth\n");
hydra_child_exit(2);
default:
ssh_disconnect(session);
ssh_finalize();
ssh_free(session);
hydra_report(stderr, "Caught unknown return code, exiting!\n");
hydra_child_exit(2);
}
run = next_run;
}
}
#else
#error "You are not using v0.4.x. Download from http://www.libssh.org and add -DWITH_SSH1=On in cmake to enable SSH v1 support"
#endif
#endif