1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
diff -Naur hydra-5.4-src.orig/hydra-ssh2.c hydra-5.4-src/hydra-ssh2.c
--- hydra-5.4-src.orig/hydra-ssh2.c 2007-03-22 14:04:29.000000000 +0000
+++ hydra-5.4-src/hydra-ssh2.c 2009-12-18 03:12:56.000000000 +0000
@@ -7,12 +7,51 @@
}
#else
-#warning "If compilation of hydra-ssh2 fails, you are not using v0.11. Download from http://www.0xbadc0de.be/"
+#warning "If compilation of hydra-ssh2 fails, you are not using v0.4. Download from http://www.libssh.org/"
#include <libssh/libssh.h>
extern char *HYDRA_EXIT;
+/* try to authenticate with one password */
+static int
+try_password(ssh_session ssh_session, char *password){
+ int auth_state;
+ int i;
+ /* printf("ssh-trying pass \"%s\"\n",password); */
+ /* We try keyboard-interactive when it's supported. kbdint is
+ * what openssh tries first when logging somewhere.
+ */
+ auth_state = ssh_userauth_kbdint(ssh_session, NULL, NULL);
+ if(auth_state == SSH_AUTH_INFO){
+ i=0;
+ /* we feed 10 password responses at max. Keybint is challenge-response
+ * based so the server could ask unrelated questions
+ */
+ while(auth_state == SSH_AUTH_INFO && i<10){
+ ssh_userauth_kbdint_setanswer(ssh_session, i, password);
+ auth_state = ssh_userauth_kbdint(ssh_session, NULL, NULL);
+ i++;
+ }
+ /* Partial authentication is specific to SSH : the password is valid but
+ * an other authentication token is needed (generaly private key)
+ */
+ if(auth_state == SSH_AUTH_PARTIAL)
+ auth_state = SSH_AUTH_SUCCESS;
+ if(auth_state == SSH_AUTH_INFO)
+ auth_state = SSH_AUTH_ERROR;
+ return auth_state;
+ }
+ if(auth_state == SSH_AUTH_ERROR)
+ return auth_state;
+ /* Keyboard-interactive is not supported so we run through the password
+ * method */
+ auth_state = ssh_userauth_password(ssh_session, NULL, password);
+ if(auth_state == SSH_AUTH_PARTIAL)
+ auth_state = SSH_AUTH_SUCCESS;
+ return auth_state;
+}
+
int
start_ssh2(int s, unsigned long int ip, int port, unsigned char options, char *miscptr, FILE * fp)
{
@@ -21,17 +60,17 @@
char *buf;
char *rc;
struct sockaddr_in targetip;
- SSH_SESSION *ssh_session;
- SSH_OPTIONS *ssh_opt;
+ ssh_session ssh_session;
+ char buffer[64], firstlogin[128];
int auth_state;
- int i = 0;
+ const int btrue = 1;
if (strlen(login = hydra_get_next_login()) == 0)
login = empty;
if (strlen(pass = hydra_get_next_password()) == 0)
pass = empty;
- ssh_opt=options_new();
+ ssh_session=ssh_new();
memset(&targetip, 0, sizeof(targetip));
memcpy(&targetip.sin_addr.s_addr, &ip, 4);
targetip.sin_family = AF_INET;
@@ -41,16 +80,18 @@
buf = malloc(20);
inet_ntop(AF_INET, &targetip.sin_addr, buf, 20);
#endif
- options_set_wanted_method(ssh_opt,KEX_COMP_C_S,"none");
- options_set_wanted_method(ssh_opt,KEX_COMP_S_C,"none");
- options_set_port(ssh_opt, port);
- options_set_host(ssh_opt, buf);
- options_set_username(ssh_opt, login);
-
- if ((ssh_session = ssh_connect(ssh_opt)) == NULL) {
+ snprintf(firstlogin,sizeof(firstlogin),"%s",login);
+ ssh_options_set(ssh_session, SSH_OPTIONS_SSH1, &btrue);
+ ssh_options_set(ssh_session, SSH_OPTIONS_PORT, &port);
+ ssh_options_set(ssh_session, SSH_OPTIONS_HOST, buf);
+ ssh_options_set(ssh_session, SSH_OPTIONS_USER, login);
+ /* printf("ssh-connecting with login \"%s\"\n",login); */
+ if (ssh_connect(ssh_session) == SSH_ERROR) {
rc = ssh_get_error(ssh_session);
if ((rc != NULL) && (rc[0] != '\0')) {
- if (strncmp("connect:", ssh_get_error(ssh_session), strlen("connect:")) == 0)
+ snprintf(buffer,sizeof(buffer),"%s",rc);
+ ssh_disconnect(ssh_session);
+ if (strncmp("connect:", buffer, strlen("connect:")) == 0)
return 3;
else
return 4;
@@ -60,43 +101,54 @@
free(buf);
buf = NULL;
#endif
-
- do {
- /* why this crap? */
- auth_state = ssh_userauth_kbdint(ssh_session, login, NULL);
- while (i < 10 && auth_state == SSH_AUTH_INFO) {
- ssh_userauth_kbdint_setanswer(ssh_session, i, pass);
- auth_state = ssh_userauth_kbdint(ssh_session, login, NULL);
- i++;
- }
-
- if (auth_state == SSH_AUTH_SUCCESS || ssh_userauth_password(ssh_session, login, pass) == SSH_AUTH_SUCCESS) {
- ssh_disconnect(ssh_session); /* this automagically frees the ssh_opt buffer */
- hydra_report_found_host(port, ip, "ssh2", fp);
- hydra_completed_pair_found();
- if (memcmp(hydra_get_next_pair(), &HYDRA_EXIT, sizeof(HYDRA_EXIT)) == 0)
- return 2;
- /* free(ssh_opt); */ /* DOUBLE FREE ! */
+ /* None method is important since it can flag passwordless servers */
+ auth_state=ssh_userauth_none(ssh_session, login);
+ if(auth_state == SSH_AUTH_SUCCESS){
+ /* passwordless server */
+ hydra_report_found_host(port, ip, "ssh2", fp);
+ hydra_completed_pair_found();
+ ssh_disconnect(ssh_session);
+ if (memcmp(hydra_get_next_pair(), &HYDRA_EXIT, sizeof(HYDRA_EXIT)) == 0)
+ return 2;
+ else
return 1;
- } else {
- if (ssh_error_code(ssh_session) == 1) {
- hydra_completed_pair();
+ }
+
+ do {
+ auth_state=try_password(ssh_session, pass);
+ if (auth_state == SSH_AUTH_SUCCESS) {
+ ssh_disconnect(ssh_session); /* this automagically frees the ssh_opt buffer */
+ hydra_report_found_host(port, ip, "ssh2", fp);
+ hydra_completed_pair_found();
if (memcmp(hydra_get_next_pair(), &HYDRA_EXIT, sizeof(HYDRA_EXIT)) == 0)
return 2;
+ return 1;
} else {
- ssh_disconnect(ssh_session); /* this automagically frees the ssh_opt buffer */
- hydra_completed_pair(); /* really? */
- if (memcmp(hydra_get_next_pair(), &HYDRA_EXIT, sizeof(HYDRA_EXIT)) == 0)
+ if (auth_state == SSH_AUTH_DENIED) {
+ hydra_completed_pair();
+ if (memcmp(hydra_get_next_pair(), &HYDRA_EXIT, sizeof(HYDRA_EXIT)) == 0){
+ ssh_disconnect(ssh_session);
return 2;
- /* free(ssh_opt); */ /* DOUBLE FREE ! */
+ }
+ /* set a new password to try */
+ login=hydra_get_next_login();
+ if(strcmp(login,firstlogin) != 0){
+ /* we can't try a new login without a new session. */
+ ssh_disconnect(ssh_session);
+ //hydra_completed_pair_skip();
+ return 1;
+ }
+ pass=hydra_get_next_password();
+ /* try again using same session */
+ } else {
+ ssh_disconnect(ssh_session); /* this automagically frees the ssh_opt buffer */
+ /* there was an error. The password was not really tried.*/
+ //hydra_completed_pair_skip();
return 1;
}
}
} while(1);
- /* not reached */
-
- /* free(ssh_opt); */ /* risk of double free */
return 1;
}
|
