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hydra-http-form.c
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/*
Hydra Form Module
-----------------
The hydra form can be used to carry out a brute-force attack on simple
web-based login forms that require username and password variables via
either a GET or POST request.
The module works similarly to the HTTP basic auth module and will honour
proxy mode (with authenticaion) as well as SSL. The module can be invoked
with the service names of "http-get-form", "http-post-form",
"https-get-form" and "https-post-form".
Here's a couple of examples: -
./hydra -l "<userID>" -P pass.txt 10.221.64.12 http-post-form
"/irmlab2/testsso-auth.do:ID=^USER^&Password=^PASS^:Invalid Password"
./hydra -S -s 443 -l "<username>" -P pass.txt 10.221.64.2 https-get-form
"/irmlab1/vulnapp.php:username=^USER^&pass=^PASS^:incorrect"
The option field (following the service field) takes ":" separated values:
The first is the page on the server to GET or POST to.
The second is the POST/GET variables (taken from either the browser, or a proxy
such as ZAP) with the varying usernames and passwords in the "^USER^" and
"^PASS^" placeholders.
The third + are optional parameters like C=, H= etc. (see below)
The final(!) parameter is the string that it checks for an *invalid* or *valid*
login
So please:
* invalid condition login should be preceded by "F="
* valid condition login should be preceded by "S=".
By default, if no header is found the condition is assume to be a fail (F=),
so checking for an *invalid* login string.
If you specify the debug flag (-d) it will show you the response from the
HTTP server which is useful for checking the result of a failed login to
find something to pattern match against. This should be done together with -t 1.
*/
#include "hydra-http.h"
#include "sasl.h"
extern char *HYDRA_EXIT;
char *buf;
char *cond;
extern int32_t http_auth_mechanism;
struct header_node {
char *header;
char *value;
char type;
struct header_node *next;
};
typedef struct cookie_node {
char *name;
char *value;
struct cookie_node *prev;
struct cookie_node *next;
} t_cookie_node, *ptr_cookie_node;
int32_t success_cond = 0;
int32_t getcookie = 1;
int32_t auth_flag = 0;
int32_t code_302_is_success = 0;
int32_t code_401_is_failure = 0;
int32_t multipart_mode = 0;
char cookie[4096] = "", cmiscptr[1024];
int32_t webport;
char bufferurl[6096 + 24], cookieurl[6096 + 24] = "", userheader[6096 + 24] = "", *url, *variables, *optional1;
#define MAX_REDIRECT 8
#define MAX_CONTENT_LENGTH 20
#define MAX_PROXY_LENGTH 2048 // sizeof(cookieurl) * 2
char redirected_url_buff[2048] = "";
int32_t redirected_flag = 0;
int32_t redirected_cpt = MAX_REDIRECT;
char *cookie_request = NULL, *normal_request = NULL; // Buffers for HTTP headers
/*
* Function to perform some initial setup.
*/
ptr_header_node initialize(char *ip, unsigned char options, char *miscptr);
/*
* Returns 1 if specified header exists, or 0 otherwise.
*/
ptr_header_node header_exists(ptr_header_node *ptr_head, char *header_name, char type) {
ptr_header_node cur_ptr = *ptr_head, found_header = NULL;
for (cur_ptr = *ptr_head; cur_ptr && !found_header; cur_ptr = cur_ptr->next)
if (cur_ptr->header && strcmp(cur_ptr->header, header_name) == 0 && cur_ptr->type == type)
found_header = cur_ptr;
return found_header;
}
#if defined(__sun)
/* Written by Kaveh R. Ghazi <[email protected]> */
char *strndup(const char *s, size_t n) {
char *result;
size_t len = strlen(s);
if (n < len)
len = n;
result = (char *)malloc(len + 1);
if (!result)
return 0;
memcpy(result, s, len);
result[len] = '\0';
return (result);
}
#endif
int32_t append_cookie(char *name, char *value, ptr_cookie_node *last_cookie) {
ptr_cookie_node new_ptr = (ptr_cookie_node)malloc(sizeof(t_cookie_node));
if (!new_ptr)
return 0;
new_ptr->name = name;
new_ptr->value = value;
new_ptr->next = NULL;
new_ptr->prev = NULL;
if (*last_cookie == NULL)
*last_cookie = new_ptr;
else
(*last_cookie)->next = new_ptr;
return 1;
}
char *stringify_cookies(ptr_cookie_node ptr_cookie) {
ptr_cookie_node cur_ptr = NULL;
uint32_t length = 1;
char *cookie_hdr = (char *)malloc(length);
if (cookie_hdr) {
memset(cookie_hdr, 0, length);
for (cur_ptr = ptr_cookie; cur_ptr; cur_ptr = cur_ptr->next) {
length += 2 + strlen(cur_ptr->name) + strlen(cur_ptr->value);
cookie_hdr = (char *)realloc(cookie_hdr, length);
if (cookie_hdr) {
strcat(cookie_hdr, cur_ptr->name);
strcat(cookie_hdr, "=");
strcat(cookie_hdr, cur_ptr->value);
if (cur_ptr->next)
strcat(cookie_hdr, ";");
} else
goto bail;
}
goto success;
}
bail:
if (cookie_hdr) {
free(cookie_hdr);
cookie_hdr = NULL;
}
success:
return cookie_hdr;
}
/*
* Cookie list layout:
* +----------+ +--------+ +------+
* | ptr_head | --> | next | --> | NULL |
* +----------+ | header | +------+
* | value |
* +--------+
* Returns 1 if success, or 0 otherwise.
*/
int32_t add_or_update_cookie(ptr_cookie_node *ptr_cookie, char *cookie_expr) {
ptr_cookie_node cur_ptr = NULL;
char *cookie_name = NULL, *cookie_value = strstr(cookie_expr, "=");
if (cookie_value) {
cookie_name = strndup(cookie_expr, cookie_value - cookie_expr);
cookie_value = strdup(cookie_value + 1);
// we've got the cookie's name and value, now it's time to insert or update
// the list
if (*ptr_cookie == NULL) {
// no cookies
append_cookie(cookie_name, cookie_value, ptr_cookie);
} else {
for (cur_ptr = *ptr_cookie; cur_ptr; cur_ptr = cur_ptr->next) {
if (strcmp(cur_ptr->name, cookie_name) == 0) {
free(cur_ptr->value); // free old value
free(cookie_name); // we already have it
cur_ptr->value = cookie_value;
break;
}
if (cur_ptr->next == NULL) {
append_cookie(cookie_name, cookie_value, &cur_ptr);
break;
}
}
}
} else
return 0;
return 1;
}
int32_t process_cookies(ptr_cookie_node *ptr_cookie, char *cookie_expr) {
char *tok = NULL;
char *expr = strdup(cookie_expr);
int32_t res = 0;
if (strstr(cookie_expr, ";")) {
tok = strtok(expr, ";");
while (tok) {
res = add_or_update_cookie(ptr_cookie, tok);
if (!res) {
free(expr);
return res;
}
tok = strtok(NULL, ";");
}
free(expr);
return res;
} else {
add_or_update_cookie(ptr_cookie, expr);
free(expr);
return 0;
}
}
/*
* List layout:
* +----------+ +--------+ +--------+ +--------+
* | ptr_head | --> | next | --> | next | --> | NULL |
* | | | header | | header | | NULL |
* | | | value | | value | | NULL |
* +----------+ +--------+ +--------+ +--------+
*
* Returns 1 if success, or 0 otherwise (out of memory).
*/
int32_t add_header(ptr_header_node *ptr_head, char *header, char *value, char type) {
ptr_header_node cur_ptr = NULL;
ptr_header_node existing_hdr, new_ptr;
if (!header || !value || !strlen(header) || !strlen(value))
return 0;
// get to the last header
for (cur_ptr = *ptr_head; cur_ptr && cur_ptr->next; cur_ptr = cur_ptr->next)
;
char *new_header = strdup(header);
char *new_value = strdup(value);
if (new_header && new_value) {
if ((type == HEADER_TYPE_USERHEADER) || (type == HEADER_TYPE_DEFAULT && !header_exists(ptr_head, new_header, HEADER_TYPE_USERHEADER_REPL)) || (type == HEADER_TYPE_USERHEADER_REPL && !header_exists(ptr_head, new_header, HEADER_TYPE_DEFAULT)) || (type == HEADER_TYPE_DEFAULT_REPL && !header_exists(ptr_head, new_header, HEADER_TYPE_DEFAULT))) {
/*
* We are in one of the following scenarios:
* 1. A default header with no user-supplied headers that replace it.
* 2. A user-supplied header that must be appended (option 'h').
* 3. A user-supplied header that must replace a default header
* (option 'h'), but no default headers exist with that name.
*
* In either case we just add the header to the list.
*/
new_ptr = (ptr_header_node)malloc(sizeof(t_header_node));
if (!new_ptr) {
free(new_header);
free(new_value);
return 0;
}
new_ptr->header = new_header;
new_ptr->value = new_value;
new_ptr->type = type;
new_ptr->next = NULL;
if (cur_ptr)
cur_ptr->next = new_ptr;
else {
// head is NULL, so the list is empty
*ptr_head = new_ptr;
}
} else if ((type == HEADER_TYPE_DEFAULT_REPL || type == HEADER_TYPE_USERHEADER_REPL) && (existing_hdr = header_exists(ptr_head, new_header, HEADER_TYPE_DEFAULT)) != NULL) {
// It's a user-supplied header that must replace a default one
// Replace the default header's value with this new value
free(existing_hdr->value); // free old value
existing_hdr->value = new_value;
existing_hdr->type = type;
free(new_header); // we dont need this one anymore
}
} else {
// we're out of memory, so forcefully end
free(new_header);
free(new_value);
return 0;
}
return 1;
}
/*
* Replace in all headers' values every occurrence of oldvalue by newvalue.
* Only user-defined headers are considered.
*/
void hdrrep(ptr_header_node *ptr_head, char *oldvalue, char *newvalue) {
ptr_header_node cur_ptr = NULL;
for (cur_ptr = *ptr_head; cur_ptr; cur_ptr = cur_ptr->next) {
if ((cur_ptr->type == HEADER_TYPE_USERHEADER || cur_ptr->type == HEADER_TYPE_USERHEADER_REPL) && strstr(cur_ptr->value, oldvalue)) {
size_t oldlen = strlen(oldvalue);
size_t newlen = strlen(newvalue);
if (oldlen != newlen)
cur_ptr->value = (char *)realloc(cur_ptr->value, strlen(cur_ptr->value) - oldlen + newlen + 1);
if (cur_ptr->value) {
char *p = strstr(cur_ptr->value, oldvalue);
memmove(p + newlen, p + oldlen, strlen(p + oldlen) + 1);
memcpy(p, newvalue, newlen);
} else {
hydra_report(stderr, "[ERROR] Out of memory (hddrep).\n");
hydra_child_exit(0);
}
}
}
}
/*
* Replace the value of the default header named 'hdrname'.
*/
void hdrrepv(ptr_header_node *ptr_head, char *hdrname, char *new_value) {
ptr_header_node cur_ptr = NULL;
for (cur_ptr = *ptr_head; cur_ptr; cur_ptr = cur_ptr->next) {
if ((cur_ptr->type == HEADER_TYPE_DEFAULT) && strcmp(cur_ptr->header, hdrname) == 0) {
cur_ptr->value = (char *)realloc(cur_ptr->value, strlen(new_value) + 1);
if (cur_ptr->value)
strcpy(cur_ptr->value, new_value);
else {
hydra_report(stderr, "[ERROR] Out of memory (hdrrepv %lu)\n", strlen(new_value) + 1);
hydra_child_exit(0);
}
}
}
}
void cleanup(ptr_header_node *ptr_head) {
ptr_header_node cur_ptr = *ptr_head, next_ptr = cur_ptr;
while (next_ptr != NULL) {
free(cur_ptr->header);
free(cur_ptr->value);
next_ptr = cur_ptr->next;
}
*ptr_head = NULL;
}
/*
* Concat all the headers in the list in a single string.
* Leave the list itself intact: do not clean it here.
*/
char *stringify_headers(ptr_header_node *ptr_head) {
char *headers_str = NULL;
ptr_header_node cur_ptr = *ptr_head;
int32_t ttl_size = 0;
for (; cur_ptr; cur_ptr = cur_ptr->next)
ttl_size += strlen(cur_ptr->header) + strlen(cur_ptr->value) + 4;
headers_str = (char *)malloc(ttl_size + 1);
if (headers_str) {
memset(headers_str, 0, ttl_size + 1);
for (cur_ptr = *ptr_head; cur_ptr; cur_ptr = cur_ptr->next) {
strcat(headers_str, cur_ptr->header);
strcat(headers_str, ": ");
strcat(headers_str, cur_ptr->value);
strcat(headers_str, "\r\n");
}
}
return headers_str;
}
int32_t parse_options(char *miscptr, ptr_header_node *ptr_head) {
char *ptr, *ptr2, *tmp;
if (miscptr == NULL)
return 1;
/*
* Parse the user-supplied options.
* Beware of the backslashes (\)!
*/
while (*miscptr != 0) {
if (strlen(miscptr) < 2 || miscptr[1] != '=') {
hydra_report(stderr, "[ERROR] optional parameters must have the format X=value: %s\n", miscptr);
return 0;
}
switch (miscptr[0]) {
case 'a': // fall through
case 'A': // only for http, not http-form!
ptr = miscptr + 2;
if (strncasecmp(ptr, "NTLM", 4) == 0)
http_auth_mechanism = AUTH_NTLM;
else if (strncasecmp(ptr, "MD5", 3) == 0 || strncasecmp(ptr, "DIGEST", 6) == 0)
http_auth_mechanism = AUTH_DIGESTMD5;
else if (strncasecmp(ptr, "BASIC", 4) == 0)
http_auth_mechanism = AUTH_BASIC;
else
fprintf(stderr, "[WARNING] unknown http auth type: %s\n", ptr);
while (*ptr != 0 && *ptr != ':')
ptr++;
if (*ptr != 0) {
*ptr = 0;
ptr += 1;
}
miscptr = ptr;
break;
case 'c': // fall through
case 'C':
ptr = miscptr + 2;
while (*ptr != 0 && (*ptr != ':' || *(ptr - 1) == '\\'))
ptr++;
if (*ptr != 0)
*ptr++ = 0;
sprintf(cookieurl, "%.1000s", hydra_strrep(miscptr + 2, "\\:", ":"));
miscptr = ptr;
break;
case '1':
code_401_is_failure = 1;
tmp = strchr(miscptr, ':');
if (tmp)
miscptr = tmp + 1;
else
miscptr += strlen(miscptr);
break;
case '2':
code_302_is_success = 1;
tmp = strchr(miscptr, ':');
if (tmp)
miscptr = tmp + 1;
else
miscptr += strlen(miscptr);
break;
case 'm': // fall through
case 'M':
multipart_mode = 1;
tmp = strchr(miscptr, ':');
if (tmp)
miscptr = tmp + 1;
else
miscptr += strlen(miscptr);
break;
case 'g': // fall through
case 'G':
ptr = miscptr + 2;
while (*ptr != 0 && (*ptr != ':' || *(ptr - 1) == '\\'))
ptr++;
if (*ptr != 0)
*ptr++ = 0;
getcookie = 0;
miscptr = ptr;
break;
case 'h':
// add a new header at the end
ptr = miscptr + 2;
while (*ptr != 0 && *ptr != ':')
ptr++;
if (*(ptr - 1) == '\\')
*(ptr - 1) = 0;
if (*ptr != 0) {
*ptr = 0;
ptr += 1;
}
ptr2 = ptr;
while (*ptr2 != 0 && (*ptr2 != ':' || *(ptr2 - 1) == '\\'))
ptr2++;
if (*ptr2 != 0)
*ptr2++ = 0;
/*
* At this point:
* - (optional1 + 2) contains the header's name
* - ptr contains the header's value
*/
if (add_header(ptr_head, miscptr + 2, hydra_strrep(ptr, "\\:", ":"), HEADER_TYPE_USERHEADER)) {
// Success: break the switch and go ahead
miscptr = ptr2;
break;
}
// Error: abort execution
hydra_report(stderr, "[ERROR] Out of memory for HTTP headers (h).\n");
return 0;
case 'H':
// add a new header, or replace an existing one's value
ptr = miscptr + 2;
while (*ptr != 0 && *ptr != ':')
ptr++;
if (*(ptr - 1) == '\\')
*(ptr - 1) = 0;
if (*ptr != 0) {
*ptr = 0;
ptr += 1;
}
ptr2 = ptr;
while (*ptr2 != 0 && (*ptr2 != ':' || *(ptr2 - 1) == '\\'))
ptr2++;
if (*ptr2 != 0)
*ptr2++ = 0;
/*
* At this point:
* - (optional1 + 2) contains the header's name
* - ptr contains the header's value
*/
if (add_header(ptr_head, miscptr + 2, hydra_strrep(ptr, "\\:", ":"), HEADER_TYPE_USERHEADER_REPL)) {
// Success: break the switch and go ahead
miscptr = ptr2;
break;
}
// Error: abort execution
hydra_report(stderr, "[ERROR] Out of memory for HTTP headers (H).\n");
return 0;
default:
hydra_report(stderr, "[ERROR] no valid optional parameter type given: %c\n", miscptr[0]);
return 0;
}
}
return 1;
}
char *build_multipart_body(char *multipart_boundary) {
if (!variables)
return NULL;
char *body = NULL;
size_t body_size = 0;
// Duplicate "variables" for tokenizing
char *vars_dup = strdup(variables);
if (!vars_dup)
return NULL;
// Tokenize the string using '&' as a delimiter
char *pair = strtok(vars_dup, "&");
while (pair != NULL) {
// Find the '=' separator in each pair
char *equal_sign = strchr(pair, '=');
if (!equal_sign) {
pair = strtok(NULL, "&");
continue;
}
*equal_sign = '\0';
char *key = pair;
char *value = equal_sign + 1;
// Build the multipart section for the field
int section_len = snprintf(NULL, 0,
"--%s\r\n"
"Content-Disposition: form-data; name=\"%s\"\r\n"
"\r\n"
"%s\r\n",
multipart_boundary, key, value);
char *section = malloc(section_len + 1);
if (!section) {
free(body);
free(vars_dup);
return NULL;
}
snprintf(section, section_len + 1,
"--%s\r\n"
"Content-Disposition: form-data; name=\"%s\"\r\n"
"\r\n"
"%s\r\n",
multipart_boundary, key, value);
// Reallocate the body buffer to add this section
size_t new_body_size = body_size + section_len;
char *new_body = realloc(body, new_body_size + 1); // +1 for null terminator
if (!new_body) {
free(section);
free(body);
free(vars_dup);
return NULL;
}
body = new_body;
if (body_size == 0)
strcpy(body, section);
else
strcat(body, section);
body_size = new_body_size;
free(section);
pair = strtok(NULL, "&");
}
free(vars_dup);
// Append the closing boundary: --<boundary>--\r\n
int closing_len = snprintf(NULL, 0, "--%s--\r\n", multipart_boundary);
char *closing = malloc(closing_len + 1);
if (!closing) {
free(body);
return NULL;
}
snprintf(closing, closing_len + 1, "--%s--\r\n", multipart_boundary);
size_t final_size = body_size + closing_len;
char *final_body = realloc(body, final_size + 1);
if (!final_body) {
free(closing);
free(body);
return NULL;
}
body = final_body;
strcat(body, closing);
free(closing);
return body;
}
char *prepare_http_request(char *type, char *path, char *params, char *headers) {
uint32_t reqlen = 0;
char *http_request = NULL;
if (type && path && headers) {
reqlen = strlen(path) + strlen(headers) + 20;
if (params)
reqlen += strlen(params);
http_request = (char *)malloc(reqlen);
if (http_request) {
memset(http_request, 0, reqlen);
// append the request verb (GET or POST)
if (strcmp(type, "GET") == 0)
strcat(http_request, "GET ");
else
strcat(http_request, "POST ");
// append the request path
strcat(http_request, path);
// if GET, append the params now
if (params && strcmp(type, "GET") == 0) {
strcat(http_request, "?");
strcat(http_request, params);
}
// append the headers
strcat(http_request, " HTTP/1.0\r\n");
strcat(http_request, headers);
strcat(http_request, "\r\n");
// if POST, append the params now
if (params && strcmp(type, "POST") == 0)
strcat(http_request, params);
}
}
return http_request;
}
int32_t strpos(char *str, char *target) {
char *res = strstr(str, target);
if (res == NULL)
return -1;
else
return res - str;
}
char *html_encode(char *string) {
char *ret = string;
if (ret == NULL)
return NULL;
if (strchr(ret, '%') != NULL)
ret = hydra_strrep(ret, "%", "%25");
if (strchr(ret, ' ') != NULL)
ret = hydra_strrep(ret, " ", "%20");
if (strchr(ret, '&') != NULL)
ret = hydra_strrep(ret, "&", "%26");
if (strchr(ret, '#') != NULL)
ret = hydra_strrep(ret, "#", "%23");
if (strchr(ret, '=') != NULL)
ret = hydra_strrep(ret, "=", "%3D");
if (strchr(ret, '+') != NULL)
ret = hydra_strrep(ret, "+", "%2B");
return ret;
}
/*
int32_t analyze_server_response(int32_t socket)
return 0 or 1 when the cond regex is matched
return -1 if no response from server
*/
int32_t analyze_server_response(int32_t s) {
int32_t runs = 0;
redirected_flag = 0;
auth_flag = 0;
while ((buf = hydra_receive_line(s)) != NULL) {
runs++;
// check for http redirection
if (strstr(buf, "HTTP/1.1 3") != NULL || strstr(buf, "HTTP/1.0 3") != NULL || strstr(buf, "Status: 3") != NULL) {
redirected_flag = 1;
} else if (strstr(buf, "HTTP/1.1 401") != NULL || strstr(buf, "HTTP/1.0 401") != NULL) {
auth_flag = 1;
} else if ((strstr(buf, "HTTP/1.1 403") != NULL) || (strstr(buf, "HTTP/1.1 404") != NULL) || (strstr(buf, "HTTP/1.0 403") != NULL) || (strstr(buf, "HTTP/1.0 404") != NULL)) {
return -1;
}
if (hydra_strcasestr(buf, "Location: ") != NULL) {
char *startloc, *endloc;
char str[2048];
startloc = hydra_strcasestr(buf, "Location: ") + strlen("Location: ");
strncpy(str, startloc, sizeof(str) - 1);
str[sizeof(str) - 1] = 0;
endloc = strchr(str, '\n');
if (endloc != NULL)
*endloc = 0;
endloc = strchr(str, '\r');
if (endloc != NULL)
*endloc = 0;
strcpy(redirected_url_buff, str);
}
// there can be multiple cookies
if (hydra_strcasestr(buf, "Set-Cookie: ") != NULL) {
char *cookiebuf = buf;
do {
char *startcookie, *endcookie1, *endcookie2;
char str[1024], tmpcookie[4096] = "", tmpname[128] = "", *ptr, *ptr2;
memset(str, 0, sizeof(str));
startcookie = hydra_strcasestr(cookiebuf, "Set-Cookie: ") + strlen("Set-Cookie: ");
strncpy(str, startcookie, sizeof(str) - 1);
str[sizeof(str) - 1] = 0;
endcookie1 = strchr(str, '\n');
endcookie2 = strchr(str, ';');
// terminate string after cookie data
if (endcookie1 != NULL && ((endcookie1 < endcookie2) || (endcookie2 == NULL))) {
if (*(endcookie1 - 1) == '\r')
endcookie1--;
*endcookie1 = 0;
} else if (endcookie2 != NULL)
*endcookie2 = 0;
// is the cookie already there? if yes, remove it!
if (strchr(startcookie, '=') != NULL && (ptr = strchr(startcookie, '=')) - startcookie + 1 <= sizeof(tmpname)) {
strncpy(tmpname, startcookie, sizeof(tmpname) - 2);
tmpname[sizeof(tmpname) - 2] = 0;
ptr = strchr(tmpname, '=');
*(++ptr) = 0;
// is the cookie already in the cookiejar? (so, does it have to be
// replaced?)
if ((ptr = hydra_strcasestr(cookie, tmpname)) != NULL) {
// yes it is.
// if the cookie is not in the beginning of the cookiejar, copy the
// ones before
if (ptr != cookie && *(ptr - 1) == ' ') {
strncpy(tmpcookie, cookie, ptr - cookie - 2);
tmpcookie[ptr - cookie - 2] = 0;
}
ptr += strlen(tmpname);
// if there are any cookies after this one in the cookiejar, copy
// them over
if ((ptr2 = strstr(ptr, "; ")) != NULL) {
ptr2 += 2;
strncat(tmpcookie, ptr2, sizeof(tmpcookie) - strlen(tmpcookie) - 1);
}
if (debug)
printf("[DEBUG] removing cookie %s in jar\n before: %s\n after: "
"%s\n",
tmpname, cookie, tmpcookie);
strcpy(cookie, tmpcookie);
}
}
ptr = strchr(str, '=');
// only copy the cookie if it has a value (otherwise the server wants to
// delete the cookie)
if (ptr != NULL && *(ptr + 1) != ';' && *(ptr + 1) != 0 && *(ptr + 1) != '\n' && *(ptr + 1) != '\r') {
if (strlen(cookie) > 0)
strncat(cookie, "; ", sizeof(cookie) - strlen(cookie) - 1);
strncat(cookie, str, sizeof(cookie) - strlen(cookie) - 1);
}
cookiebuf = startcookie;
} while (hydra_strcasestr(cookiebuf, "Set-Cookie: ") != NULL);
}
#ifdef HAVE_PCRE
if (hydra_string_match(buf, cond) == 1) {
#else
if (strstr(buf, cond) != NULL) {
#endif
free(buf);
// printf("DEBUG: STRING %s FOUND!!:\n%s\n", cond, buf);
return 1;
}
// else printf("DEBUG: STRING %s NOT FOUND:\n%s\n", cond, buf);
free(buf);
}
if (runs == 0) {
if (debug)
hydra_report(stderr, "DEBUG: no response from server\n");
return -1;
}
return 0;
}
void hydra_reconnect(int32_t s, char *ip, int32_t port, unsigned char options, char *hostname) {
if (s >= 0)
s = hydra_disconnect(s);
if ((options & OPTION_SSL) == 0) {
s = hydra_connect_tcp(ip, port);
} else {
s = hydra_connect_ssl(ip, port, hostname);
}
}
int32_t start_http_form(int32_t s, char *ip, int32_t port, unsigned char options, char *miscptr, FILE *fp, char *hostname, char *type, ptr_header_node ptr_head, ptr_cookie_node ptr_cookie) {
char *empty = "";
char *login, *pass, clogin[256], cpass[256], b64login[345], b64pass[345];
char header[8096], *upd3variables;
char *cookie_header = NULL;
char *http_request = NULL;
int32_t found = !success_cond, i, j;
char content_length[MAX_CONTENT_LENGTH], proxy_string[MAX_PROXY_LENGTH];
char content_type[256];
memset(header, 0, sizeof(header));
cookie[0] = 0; // reset cookies from potential previous attempt
if (use_proxy > 0 && proxy_count > 0)
selected_proxy = random() % proxy_count;
// Take the next login/pass pair
if (strlen(login = hydra_get_next_login()) == 0)
login = empty;
if (strlen(pass = hydra_get_next_password()) == 0)
pass = empty;
strcpy(b64login, login);
hydra_tobase64((unsigned char *)b64login, strlen(b64login), sizeof(b64login));
strcpy(b64pass, pass);
hydra_tobase64((unsigned char *)b64pass, strlen(b64pass), sizeof(b64pass));
strncpy(clogin, html_encode(login), sizeof(clogin) - 1);
clogin[sizeof(clogin) - 1] = 0;
strncpy(cpass, html_encode(pass), sizeof(cpass) - 1);
cpass[sizeof(cpass) - 1] = 0;
if (multipart_mode) {
snprintf(content_type, sizeof(content_type), "multipart/form-data; boundary=----THC-HydraBoundaryz2Z2z");
char *multipart_body = build_multipart_body("----THC-HydraBoundaryz2Z2z");
upd3variables = multipart_body;
}else{
snprintf(content_type, sizeof(content_type), "application/x-www-form-urlencoded");
upd3variables = variables;
}
upd3variables = hydra_strrep(upd3variables, "^USER^", clogin);
upd3variables = hydra_strrep(upd3variables, "^PASS^", cpass);
upd3variables = hydra_strrep(upd3variables, "^USER64^", b64login);
upd3variables = hydra_strrep(upd3variables, "^PASS64^", b64pass);
// Replace the user/pass placeholders in the user-supplied headers
hdrrep(&ptr_head, "^USER^", clogin);
hdrrep(&ptr_head, "^PASS^", cpass);
hdrrep(&ptr_head, "^USER64^", b64login);
hdrrep(&ptr_head, "^PASS64^", b64pass);
/* again: no snprintf to be portable. don't worry, buffer can't overflow */
if (use_proxy == 1 && proxy_authentication[selected_proxy] != NULL) {
if (getcookie) {
memset(proxy_string, 0, sizeof(proxy_string));
snprintf(proxy_string, MAX_PROXY_LENGTH - 1, "http://%s%.600s", webtarget, cookieurl);
if (http_request != NULL)
free(http_request);
http_request = prepare_http_request("GET", proxy_string, NULL, cookie_request);
if (hydra_send(s, http_request, strlen(http_request), 0) < 0)
return 1;
i = analyze_server_response(s); // ignore result
if (strlen(cookie) > 0)
process_cookies(&ptr_cookie, cookie);
hydra_reconnect(s, ip, port, options, hostname);
}
// now prepare for the "real" request
if (strcmp(type, "POST") == 0) {
memset(proxy_string, 0, sizeof(proxy_string));
snprintf(proxy_string, MAX_PROXY_LENGTH - 1, "http://%s%.600s", webtarget, url);
snprintf(content_length, MAX_CONTENT_LENGTH - 1, "%d", (int32_t)strlen(upd3variables));
if (header_exists(&ptr_head, "Content-Length", HEADER_TYPE_DEFAULT))
hdrrepv(&ptr_head, "Content-Length", content_length);
else
add_header(&ptr_head, "Content-Length", content_length, HEADER_TYPE_DEFAULT);
if (!header_exists(&ptr_head, "Content-Type", HEADER_TYPE_DEFAULT))
add_header(&ptr_head, "Content-Type", content_type, HEADER_TYPE_DEFAULT);
if (cookie_header != NULL)
free(cookie_header);
cookie_header = stringify_cookies(ptr_cookie);
if (!header_exists(&ptr_head, "Cookie", HEADER_TYPE_DEFAULT))
add_header(&ptr_head, "Cookie", cookie_header, HEADER_TYPE_DEFAULT);
else
hdrrepv(&ptr_head, "Cookie", cookie_header);
if (normal_request != NULL)
free(normal_request);
normal_request = stringify_headers(&ptr_head);
if (http_request != NULL)
free(http_request);
http_request = prepare_http_request("POST", proxy_string, upd3variables, normal_request);
if (hydra_send(s, http_request, strlen(http_request), 0) < 0) {
free(cookie_header);
return 1;
}
} else {
if (header_exists(&ptr_head, "Content-Length", HEADER_TYPE_DEFAULT))
hdrrepv(&ptr_head, "Content-Length", "0");
if (cookie_header != NULL)
free(cookie_header);
cookie_header = stringify_cookies(ptr_cookie);
if (!header_exists(&ptr_head, "Cookie", HEADER_TYPE_DEFAULT))
add_header(&ptr_head, "Cookie", cookie_header, HEADER_TYPE_DEFAULT);
else
hdrrepv(&ptr_head, "Cookie", cookie_header);
if (normal_request != NULL)
free(normal_request);
normal_request = stringify_headers(&ptr_head);
if (http_request != NULL)
free(http_request);
http_request = prepare_http_request("GET", proxy_string, upd3variables, normal_request);
if (hydra_send(s, http_request, strlen(http_request), 0) < 0) {
free(cookie_header);
return 1;
}
}
} else {
if (use_proxy == 1) {
// proxy without authentication
if (getcookie) {
// doing a GET to get cookies
memset(proxy_string, 0, sizeof(proxy_string));
snprintf(proxy_string, MAX_PROXY_LENGTH - 1, "http://%s%.600s", webtarget, cookieurl);
if (http_request != NULL)
free(http_request);
http_request = prepare_http_request("GET", proxy_string, NULL, cookie_request);
if (hydra_send(s, http_request, strlen(http_request), 0) < 0)
return 1;
i = analyze_server_response(s); // ignore result
if (strlen(cookie) > 0)
process_cookies(&ptr_cookie, cookie);
hydra_reconnect(s, ip, port, options, hostname);
}
// now prepare for the "real" request
if (strcmp(type, "POST") == 0) {
memset(proxy_string, 0, sizeof(proxy_string));
snprintf(proxy_string, MAX_PROXY_LENGTH - 1, "http://%s%.600s", webtarget, url);
snprintf(content_length, MAX_CONTENT_LENGTH - 1, "%d", (int32_t)strlen(upd3variables));
if (header_exists(&ptr_head, "Content-Length", HEADER_TYPE_DEFAULT))
hdrrepv(&ptr_head, "Content-Length", content_length);
else
add_header(&ptr_head, "Content-Length", content_length, HEADER_TYPE_DEFAULT);
if (!header_exists(&ptr_head, "Content-Type", HEADER_TYPE_DEFAULT))
add_header(&ptr_head, "Content-Type", content_type, HEADER_TYPE_DEFAULT);
if (cookie_header != NULL)
free(cookie_header);
cookie_header = stringify_cookies(ptr_cookie);
if (!header_exists(&ptr_head, "Cookie", HEADER_TYPE_DEFAULT))
add_header(&ptr_head, "Cookie", cookie_header, HEADER_TYPE_DEFAULT);
else
hdrrepv(&ptr_head, "Cookie", cookie_header);
if (normal_request != NULL)
free(normal_request);
normal_request = stringify_headers(&ptr_head);
if (http_request != NULL)
free(http_request);
http_request = prepare_http_request("POST", proxy_string, upd3variables, normal_request);
if (hydra_send(s, http_request, strlen(http_request), 0) < 0) {
free(cookie_header);
return 1;
}
} else {
if (header_exists(&ptr_head, "Content-Length", HEADER_TYPE_DEFAULT))
hdrrepv(&ptr_head, "Content-Length", "0");
if (cookie_header != NULL)