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hydra-http.c
479 lines (422 loc) · 15.5 KB
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hydra-http.c
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#include "hydra-http.h"
#include "sasl.h"
extern char *HYDRA_EXIT;
char *webtarget = NULL;
char *slash = "/";
char *http_buf = NULL;
#define END_CONDITION_MAX_LEN 100
static char end_condition[END_CONDITION_MAX_LEN];
int end_condition_type = -1;
int32_t webport;
int32_t http_auth_mechanism = AUTH_UNASSIGNED;
int32_t start_http(int32_t s, char *ip, int32_t port, unsigned char options, char *miscptr, FILE *fp, char *type, ptr_header_node ptr_head) {
char *empty = "";
char *login, *pass, *buffer, buffer2[500];
char *header;
char *ptr, *fooptr;
int32_t complete_line = 0, buffer_size;
char tmpreplybuf[1024] = "", *tmpreplybufptr;
if (strlen(login = hydra_get_next_login()) == 0)
login = empty;
if (strlen(pass = hydra_get_next_password()) == 0)
pass = empty;
if (strcmp(type, "POST") == 0)
add_header(&ptr_head, "Content-Length", "0", HEADER_TYPE_DEFAULT);
header = stringify_headers(&ptr_head);
buffer_size = strlen(header) + 500;
if (!(buffer = malloc(buffer_size))) {
free(header);
return 3;
}
// we must reset this if buf is NULL and we do MD5 digest
if (http_buf == NULL && http_auth_mechanism == AUTH_DIGESTMD5)
http_auth_mechanism = AUTH_BASIC;
if (use_proxy > 0 && proxy_count > 0)
selected_proxy = random() % proxy_count;
switch (http_auth_mechanism) {
case AUTH_BASIC:
sprintf(buffer2, "%.50s:%.50s", login, pass);
hydra_tobase64((unsigned char *)buffer2, strlen(buffer2), sizeof(buffer2));
/* again: no snprintf to be portable. don't worry, buffer can't overflow */
if (use_proxy == 1 && proxy_authentication[selected_proxy] != NULL)
sprintf(buffer,
"%s http://%s%.250s HTTP/1.1\r\nHost: %s\r\nConnection: "
"close\r\nAuthorization: Basic %s\r\nProxy-Authorization: Basic "
"%s\r\nUser-Agent: Mozilla/4.0 (Hydra)\r\n%s\r\n",
type, webtarget, miscptr, webtarget, buffer2, proxy_authentication[selected_proxy], header);
else {
if (use_proxy == 1)
sprintf(buffer,
"%s http://%s%.250s HTTP/1.1\r\nHost: %s\r\nConnection: "
"close\r\nAuthorization: Basic %s\r\nUser-Agent: Mozilla/4.0 "
"(Hydra)\r\n%s\r\n",
type, webtarget, miscptr, webtarget, buffer2, header);
else
sprintf(buffer,
"%s %.250s HTTP/1.1\r\nHost: %s\r\nConnection: "
"close\r\nAuthorization: Basic %s\r\nUser-Agent: Mozilla/4.0 "
"(Hydra)\r\n%s\r\n",
type, miscptr, webtarget, buffer2, header);
}
if (debug)
hydra_report(stderr, "C:%s\n", buffer);
break;
#ifdef LIBOPENSSL
case AUTH_DIGESTMD5: {
char *pbuffer, *result;
pbuffer = hydra_strcasestr(http_buf, "WWW-Authenticate: Digest ");
strncpy(buffer, pbuffer + strlen("WWW-Authenticate: Digest "), buffer_size - 1);
buffer[buffer_size - 1] = '\0';
fooptr = buffer2;
result = sasl_digest_md5(fooptr, login, pass, buffer, miscptr, type, webtarget, webport, header);
if (result == NULL) {
free(buffer);
free(header);
return 3;
}
if (debug)
hydra_report(stderr, "C:%s\n", buffer2);
strcpy(buffer, buffer2);
} break;
#endif
case AUTH_NTLM: {
unsigned char buf1[4096];
unsigned char buf2[4096];
char *pos = NULL;
// send auth and receive challenge
// send auth request: let the server send it's own hostname and domainname
buildAuthRequest((tSmbNtlmAuthRequest *)buf2, 0, NULL, NULL);
to64frombits(buf1, buf2, SmbLength((tSmbNtlmAuthRequest *)buf2));
/* to be portable, no snprintf, buffer is big enough so it can't overflow */
// send the first..
if (use_proxy == 1 && proxy_authentication[selected_proxy] != NULL)
sprintf(buffer,
"%s http://%s%s HTTP/1.1\r\nHost: %s\r\nAuthorization: NTLM "
"%s\r\nProxy-Authorization: Basic %s\r\nUser-Agent: Mozilla/4.0 "
"(Hydra)\r\n%s\r\n",
type, webtarget, miscptr, webtarget, buf1, proxy_authentication[selected_proxy], header);
else {
if (use_proxy == 1)
sprintf(buffer,
"%s http://%s%s HTTP/1.1\r\nHost: %s\r\nAuthorization: NTLM "
"%s\r\nUser-Agent: Mozilla/4.0 (Hydra)\r\n%s\r\n",
type, webtarget, miscptr, webtarget, buf1, header);
else
sprintf(buffer,
"%s %s HTTP/1.1\r\nHost: %s\r\nAuthorization: NTLM "
"%s\r\nUser-Agent: Mozilla/4.0 (Hydra)\r\n%s\r\n",
type, miscptr, webtarget, buf1, header);
}
if (hydra_send(s, buffer, strlen(buffer), 0) < 0) {
free(buffer);
free(header);
return 1;
}
// receive challenge
if (http_buf != NULL)
free(http_buf);
http_buf = hydra_receive_line(s);
if (http_buf == NULL) {
if (verbose)
hydra_report(stderr, "[ERROR] Server did not answer\n");
free(buffer);
free(header);
return 3;
}
pos = hydra_strcasestr(http_buf, "WWW-Authenticate: NTLM ");
if (pos != NULL) {
char *str;
pos += 23;
if ((str = strchr(pos, '\r')) != NULL) {
pos[str - pos] = 0;
}
if ((str = strchr(pos, '\n')) != NULL) {
pos[str - pos] = 0;
}
} else {
hydra_report(stderr, "[ERROR] It is not NTLM authentication type\n");
return 3;
}
// recover challenge
from64tobits((char *)buf1, pos);
free(http_buf);
http_buf = NULL;
// Send response
buildAuthResponse((tSmbNtlmAuthChallenge *)buf1, (tSmbNtlmAuthResponse *)buf2, 0, login, pass, NULL, NULL);
to64frombits(buf1, buf2, SmbLength((tSmbNtlmAuthResponse *)buf2));
// create the auth response
if (use_proxy == 1 && proxy_authentication[selected_proxy] != NULL)
sprintf(buffer,
"%s http://%s%s HTTP/1.1\r\nHost: %s\r\nAuthorization: NTLM "
"%s\r\nProxy-Authorization: Basic %s\r\nUser-Agent: Mozilla/4.0 "
"(Hydra)\r\n%s\r\n",
type, webtarget, miscptr, webtarget, buf1, proxy_authentication[selected_proxy], header);
else {
if (use_proxy == 1)
sprintf(buffer,
"%s http://%s%s HTTP/1.1\r\nHost: %s\r\nAuthorization: NTLM "
"%s\r\nUser-Agent: Mozilla/4.0 (Hydra)\r\n%s\r\n",
type, webtarget, miscptr, webtarget, buf1, header);
else
sprintf(buffer,
"%s %s HTTP/1.1\r\nHost: %s\r\nAuthorization: NTLM "
"%s\r\nUser-Agent: Mozilla/4.0 (Hydra)\r\n%s\r\n",
type, miscptr, webtarget, buf1, header);
}
if (debug)
hydra_report(stderr, "C:%s\n", buffer);
} break;
}
if (hydra_send(s, buffer, strlen(buffer), 0) < 0) {
free(buffer);
free(header);
return 1;
}
if (http_buf != NULL)
free(http_buf);
http_buf = hydra_receive_line(s);
complete_line = 0;
tmpreplybuf[0] = 0;
while (http_buf != NULL && (strstr(http_buf, "HTTP/1.") == NULL || (strchr(http_buf, '\n') == NULL && complete_line == 0))) {
if (debug)
printf("il: %d, tmpreplybuf: %s, http_buf: %s\n", complete_line, tmpreplybuf, http_buf);
if (tmpreplybuf[0] == 0 && strstr(http_buf, "HTTP/1.") != NULL) {
strncpy(tmpreplybuf, http_buf, sizeof(tmpreplybuf) - 1);
tmpreplybuf[sizeof(tmpreplybuf) - 1] = 0;
free(http_buf);
http_buf = hydra_receive_line(s);
} else if (tmpreplybuf[0] != 0) {
complete_line = 1;
if ((tmpreplybufptr = malloc(strlen(tmpreplybuf) + strlen(http_buf) + 1)) != NULL) {
strcpy(tmpreplybufptr, tmpreplybuf);
strcat(tmpreplybufptr, http_buf);
free(http_buf);
http_buf = tmpreplybufptr;
if (debug)
printf("http_buf now: %s\n", http_buf);
}
} else {
free(http_buf);
http_buf = hydra_receive_line(s);
}
}
// if server cut the connection, just exit cleanly or
// this will be an infinite loop
if (http_buf == NULL) {
if (verbose)
hydra_report(stderr, "[ERROR] Server did not answer\n");
free(buffer);
free(header);
return 3;
}
if (debug)
hydra_report(stderr, "S:%s\n", http_buf);
ptr = ((char *)strchr(http_buf, ' '));
if (ptr != NULL)
ptr++;
if (ptr != NULL && (*ptr == '2' || *ptr == '3' || strncmp(ptr, "403", 3) == 0 || strncmp(ptr, "404", 3) == 0)) {
#ifdef HAVE_PCRE
if (end_condition_type >= 0 && hydra_string_match(http_buf, end_condition) != end_condition_type) {
#else
if (end_condition_type >= 0 && (strstr(http_buf, end_condition) == NULL ? 0 : 1) != end_condition_type) {
#endif
if (debug)
hydra_report(stderr, "End condition not match continue.\n");
hydra_completed_pair();
} else {
if (debug)
hydra_report(stderr, "END condition %s match.\n", end_condition);
hydra_report_found_host(port, ip, "www", fp);
hydra_completed_pair_found();
}
if (http_buf != NULL) {
free(http_buf);
http_buf = NULL;
}
} else {
if (ptr != NULL && *ptr != '4')
fprintf(stderr, "[WARNING] Unusual return code: %.3s for %s:%s\n", (char *)ptr, login, pass);
// the first authentication type failed, check the type from server header
if ((hydra_strcasestr(http_buf, "WWW-Authenticate: Basic") == NULL) && (http_auth_mechanism == AUTH_BASIC)) {
// seems the auth supported is not Basic scheme so testing further
int32_t find_auth = 0;
if (hydra_strcasestr(http_buf, "WWW-Authenticate: NTLM") != NULL) {
http_auth_mechanism = AUTH_NTLM;
find_auth = 1;
}
#ifdef LIBOPENSSL
if (hydra_strcasestr(http_buf, "WWW-Authenticate: Digest") != NULL) {
http_auth_mechanism = AUTH_DIGESTMD5;
find_auth = 1;
}
#endif
if (find_auth) {
// free(http_buf);
// http_buf = NULL;
free(buffer);
free(header);
return 1;
}
}
hydra_completed_pair();
}
// free(http_buf);
// http_buf = NULL;
free(buffer);
free(header);
if (memcmp(hydra_get_next_pair(), &HYDRA_EXIT, sizeof(HYDRA_EXIT)) == 0)
return 3;
return 1;
}
void service_http(char *ip, int32_t sp, unsigned char options, char *miscptr, FILE *fp, int32_t port, char *hostname, char *type) {
int32_t run = 1, next_run = 1, sock = -1;
int32_t myport = PORT_HTTP, mysslport = PORT_HTTP_SSL;
char *ptr, *ptr2;
ptr_header_node ptr_head = NULL;
#ifdef AF_INET6
unsigned char addr6[sizeof(struct in6_addr)];
#endif
hydra_register_socket(sp);
if (memcmp(hydra_get_next_pair(), &HYDRA_EXIT, sizeof(HYDRA_EXIT)) == 0)
return;
if (strlen(miscptr) == 0)
miscptr = strdup("/");
if (port != 0)
webport = port;
else if ((options & OPTION_SSL) == 0)
webport = myport;
else
webport = mysslport;
/* normalise the webtarget for ipv6/port number */
webtarget = malloc(strlen(hostname) + 1 /* null */ + 6 /* :65535 */
#ifdef AF_INET6
+ 2 /* [] */
#endif
);
#ifdef AF_INET6
/* let libc decide if target is an ipv6 address */
if (inet_pton(AF_INET6, hostname, addr6)) {
ptr = webtarget + sprintf(webtarget, "[%s]", hostname);
} else {
#endif
ptr = webtarget + sprintf(webtarget, "%s", hostname);
#ifdef AF_INET6
}
#endif
if (options & OPTION_SSL && webport != PORT_HTTP_SSL || !(options & OPTION_SSL) && webport != PORT_HTTP) {
sprintf(ptr, ":%d", webport);
}
ptr = NULL;
/* Advance to options string */
ptr = miscptr;
while (*ptr != 0 && (*ptr != ':' || *(ptr - 1) == '\\'))
ptr++;
if (*ptr != 0)
*ptr++ = 0;
optional1 = ptr;
if (!parse_options(optional1,
&ptr_head)) // this function is in hydra-http-form.c !!
run = 4;
if (http_auth_mechanism == AUTH_UNASSIGNED)
http_auth_mechanism = AUTH_BASIC;
while (1) {
next_run = 0;
switch (run) {
case 1: /* connect and service init function */
{
if (sock >= 0)
sock = hydra_disconnect(sock);
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 (quiet != 1)
fprintf(stderr, "[ERROR] Child with pid %d terminating, can not connect\n", (int32_t)getpid());
hydra_child_exit(1);
}
next_run = 2;
break;
}
case 2: /* run the cracking function */
next_run = start_http(sock, ip, port, options, miscptr, fp, type, ptr_head);
break;
case 3: /* clean exit */
if (sock >= 0)
sock = hydra_disconnect(sock);
hydra_child_exit(0);
return;
default:
fprintf(stderr, "[ERROR] Caught unknown return code, exiting!\n");
hydra_child_exit(0);
}
run = next_run;
}
}
void service_http_get(char *ip, int32_t sp, unsigned char options, char *miscptr, FILE *fp, int32_t port, char *hostname) { service_http(ip, sp, options, miscptr, fp, port, hostname, "GET"); }
void service_http_post(char *ip, int32_t sp, unsigned char options, char *miscptr, FILE *fp, int32_t port, char *hostname) { service_http(ip, sp, options, miscptr, fp, port, hostname, "POST"); }
void service_http_head(char *ip, int32_t sp, unsigned char options, char *miscptr, FILE *fp, int32_t port, char *hostname) { service_http(ip, sp, options, miscptr, fp, port, hostname, "HEAD"); }
int32_t service_http_init(char *ip, int32_t sp, unsigned char options, char *miscptr, FILE *fp, int32_t 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
/*POU CODE */
char *start = strstr(miscptr, "F=");
if (start == NULL)
start = strstr(miscptr, "S=");
if (start != NULL) {
if (start[0] == 'F')
end_condition_type = 0;
else
end_condition_type = 1;
int condition_len = strlen(start);
memset(end_condition, 0, END_CONDITION_MAX_LEN);
if (condition_len >= END_CONDITION_MAX_LEN) {
hydra_report(stderr, "Condition string cannot be bigger than %u.", END_CONDITION_MAX_LEN);
return -1;
}
// copy condition witout starting string (F= or S= 2char)
strncpy(end_condition, start + 2, condition_len - 2);
if (debug)
hydra_report(stderr, "End condition is %s, mod is %d\n", end_condition, end_condition_type);
if (*(start - 1) == ' ')
start--;
memset(start, '\0', condition_len);
if (debug)
hydra_report(stderr, "Modified options:%s\n", miscptr);
} else {
if (debug)
hydra_report(stderr, "Condition not found\n");
}
return 0;
}
void usage_http(const char *service) {
printf("Module %s requires the page to authenticate.\n"
"The following parameters are optional:\n"
" (a|A)=auth-type specify authentication mechanism to use: BASIC, "
"NTLM or MD5\n"
" (h|H)=My-Hdr\\: foo to send a user defined HTTP header with each "
"request\n"
" (F|S)=check for text in the HTTP reply. S= means if this text is "
"found, a\n"
" valid account has been found, F= means if this string is "
"present the\n"
" combination is invalid. Note: this must be the last option "
"supplied.\n"
"For example: \"/secret\" or \"http://bla.com/foo/bar:H=Cookie\\: "
"sessid=aaaa\" or \"https://test.com:8080/members:A=NTLM\"\n\n",
service);
}