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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325
|
/*
* Copyright (c) 2006, Nico Leidecker
* All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the organization nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <signal.h>
/* local includes */
#include "sucrack.h"
#include "stat.h"
#include "dictionary.h"
#include "worker.h"
#include "su.h"
#include "util.h"
#include "rules.h"
#include "rewriter.h"
/* local termination flag */
static int terminate = 0;
/* capture interrupt signal and set termination flag */
void
sigint(int i)
{
terminate = 1;
}
void
usage(char *path)
{
printf("%s - the su cracker\n", SUCRACK_TITLE);
printf("Copyright (C) 2006 Nico Leidecker; nfl@portcullis-security.com\n\n");
printf(" Usage: %s [-char] [-w num] [-b size] [-s sec] [-u user] [-l rules] wordlist\n\n", path);
printf(" The word list can either be an existing file or stdin. In that case, use '-' instead");
printf(" of a file name\n\n");
printf(" Options:\n");
printf(" h : print this message\n");
#ifdef STATISTICS
printf(" a : use ansi escape codes for nice looking statistics\n");
printf(" s sec : statistics display interval\n");
printf(" c : only print statistics if a key other than `q' is pressed\n");
#else
printf(" a : ansi escape codes not available.\n");
printf(" Use the --enable-statistics configure flag.\n");
printf(" s sec : statistics display interval not available.\n");
printf(" Use the --enable-statistics configure flag.\n");
printf(" c : only print statistics if a key other than `q' is pressed. (default)\n");
#endif
printf(" r : enable rewriter\n");
printf(" w num : number of worker threads running with\n");
printf(" b size : size of word list buffer\n");
printf(" u user : user account to su to\n");
printf(" l rules : specify rewriting rules; rules can be:\n");
printf(" A = all characters upper case\n");
printf(" F = first character upper case\n");
printf(" L = last character upper case\n");
printf(" a = all characters lower case\n");
printf(" f = first character lower case\n");
printf(" l = last character lower case\n");
printf(" D = prepend digit\n");
printf(" d = append digit\n");
printf(" e = 1337 characters\n");
printf(" x = all rules\n\n");
printf(" Environment Variables:\n");
printf(" SUCRACK_SU_PATH : The path to su (usually /bin/su or /usr/bin/su)\n\n");
printf(" SUCRACK_AUTH_FAILURE : The message su returns on an authentication\n");
printf(" failure (like \"su: Authentication failure\" or \"su: Sorry\")\n");
printf(" SUCRACK_AUTH_SUCCESS : The message that indicates an authentication\n");
printf(" success. This message must not be a password\n");
printf(" listed in the wordlist (default is \"SUCRACK_SUCCESS\")\n\n");
printf(" Example:\n");
printf(" export SUCRACK_AUTH_SUCCESS=\"sucrack_says_hello\"\n");
printf(" %s -a -w 20 -s 10 -u root -rl AFLafld dict.txt\n", path);
}
int
main(int argc, char **argv)
{
char *dfile, *user;
int o, ssec, ansi, wnum, bsize, rewr;
unsigned int rules;
int read_from_stdin;
if ((getuid() | getgid()) == 0) {
printf("yah, very funny!\n");
return 0;
}
/* initial values */
dfile = 0;
user = 0;
ssec = 0;
ansi = 0;
wnum = 1;
bsize = 2;
rewr = 0;
rules = 0x0000;
read_from_stdin = 0;
while((o = getopt(argc, argv, "charw:b:s:u:l:")) != -1) {
switch(o) {
case 'c':
/*
* to set the statistic printing interval to 0 means to not print
* statistics unless a key was pressed
*/
ssec = 0;
break;
case 'h':
usage(*argv);
return 0;
#ifdef STATISTICS
case 'a':
ansi = 1;
break;
case 's':
ssec = atoi(optarg);
break;
#else
case 'a':
case 's':
printf("-%c option not available. Use the --enable-statistics configure flag\n", o);
break;
#endif
case 'r':
rewr = 1;
break;
case 'w':
wnum = atoi(optarg);
if (!wnum) {
wnum = 1;
}
break;
case 'b':
bsize = atoi(optarg);
break;
case 'u':
user = strdup(optarg);
break;
case 'l':
while(*optarg) {
switch(*optarg) {
case 'A':
rules |= RULES_ALL_UPPER;
break;
case 'F':
rules |= RULES_FIRST_UPPER;
break;
case 'L':
rules |= RULES_LAST_UPPER;
break;
case 'a':
rules |= RULES_ALL_LOWER;
break;
case 'f':
rules |= RULES_FIRST_LOWER;
break;
case 'l':
rules |= RULES_LAST_LOWER;
break;
case 'D':
rules |= RULES_PREPEND_DIGIT;
break;
case 'd':
rules |= RULES_APPEND_DIGIT;
break;
case 'e':
rules |= RULES_1337;
break;
case 'x':
rules = RULES_ALL_UPPER
| RULES_FIRST_UPPER
| RULES_LAST_UPPER
| RULES_ALL_LOWER
| RULES_FIRST_LOWER
| RULES_LAST_LOWER
| RULES_PREPEND_DIGIT
| RULES_APPEND_DIGIT
| RULES_1337;
break;
}
optarg++;
}
break;
default:
err_printf("unrecognized option -%c\n", o);
usage(*argv);
return 0;
}
}
/* validate some values */
if (optind < argc) {
dfile = strdup(argv[optind]);
}
if (!dfile) {
err_printf("no wordlist file\n");
usage(*argv);
return 0;
} else {
if (strcmp(dfile, "-") == 0) {
read_from_stdin = 1;
}
}
if (bsize - 1 < wnum) {
bsize = wnum * 2;
}
/* set up signal handler */
signal(SIGINT, sigint);
/* initialize dictionary thread */
if (dict_init(dfile, bsize, rewr) == -1) {
err_printf("dictionary could not be initialized\n");
return -1;
}
/* set rules for rewriter */
rewr_add_rules(rules);
/* initialize su and set up user */
if (su_init(SU_DEFAULT_USER) == -1) {
err_printf("su could not be initialized\n");
return -1;
}
if (user) {
su_user(user);
}
/* initialize and spawn workers */
if (worker_init(wnum) == -1) {
err_printf("workers could not be initialized\n");
return -1;
}
if (worker_spawn() == -1) {
err_printf("workers could not be spawned\n");
return -1;
}
/* main loops */
prepare_tty(!read_from_stdin);
/* prepare tty to capture keys */
if (!read_from_stdin) {
do {
o = key_pressed();
if (o == 'q') {
terminate = 1;
} else {
#ifdef STATISTICS
if (ssec > 0) {
stat_display(ssec, ansi);
} else {
switch (o) {
case -1:
break;
default:
stat_display(0, ansi);
}
}
#else
if (o != -1) {
stat_display();
}
#endif
}
} while(!dict_is_eof() && !terminate);
} else {
do {
if (ssec > 0) {
stat_display(ssec, ansi);
}
} while(!dict_is_eof() && !terminate);
}
/* reset terminal */
reset_tty();
#ifdef STATISTICS
stat_display(0, ansi);
#endif
/* clean up */
dict_kill(terminate);
worker_kill(terminate);
printf("bye, bye...\n");
return 0;
}
|