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Add new option to disable placeholders.

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With -y the use of -x ?:?:aA1 has changed to "use a, A and 1",
instead of "use all lowercase, uppercase letters and all numbers".
This commit is contained in:
Dario Lombardo 2016-08-30 15:14:42 +02:00
parent 2e8c21a9ca
commit 712defcb40
3 changed files with 92 additions and 74 deletions
Download patch file Download diff file Expand all files Collapse all files

53
bfg.c
View file

@ -14,6 +14,31 @@ bf_option bf_options;
extern int debug;
static int add_single_char(char ch, char flags, int* crs_len) {
if ((ch >= '2' && ch <= '9') || ch == '0') {
if ((flags & BF_NUMS) > 0) {
printf("[ERROR] character %c defined in -x although the whole number range was already defined by '1', ignored\n", ch);
return 0;
}
printf("[WARNING] adding character %c for -x, note that '1' will add all numbers from 0-9\n", ch);
}
if (tolower((int) ch) >= 'b' && tolower((int) ch) <= 'z') {
if ((ch <= 'Z' && (flags & BF_UPPER) > 0) || (ch > 'Z' && (flags & BF_UPPER) > 0)) {
printf("[ERROR] character %c defined in -x although the whole letter range was already defined by '%c', ignored\n", ch, ch <= 'Z' ? 'A' : 'a');
return 0;
}
printf("[WARNING] adding character %c for -x, note that '%c' will add all %scase letters\n", ch, ch <= 'Z' ? 'A' : 'a', ch <= 'Z' ? "up" : "low");
}
(*crs_len)++;
if (BF_CHARSMAX - *crs_len < 1) {
free(bf_options.crs);
fprintf(stderr, "Error: charset specification exceeds %d characters.\n", BF_CHARSMAX);
return 1;
} else {
bf_options.crs[*crs_len - 1] = ch;
bf_options.crs[*crs_len] = '\0';
}
}
// return values : 0 on success, 1 on error
//
// note that we check for -x .:.:ab but not for -x .:.:ba
@ -69,6 +94,10 @@ int bf_init(char *arg) {
bf_options.crs[0] = 0;
for (; tmp[i]; i++) {
if (bf_options.disable_symbols) {
if (add_single_char(tmp[i], flags, &crs_len) == -1)
return 1;
} else {
switch (tmp[i]) {
case 'a':
crs_len += 26;
@ -119,32 +148,12 @@ int bf_init(char *arg) {
break;
default:
if ((tmp[i] >= '2' && tmp[i] <= '9') || tmp[i] == '0') {
if ((flags & BF_NUMS) > 0) {
printf("[ERROR] character %c defined in -x although the whole number range was already defined by '1', ignored\n", tmp[i]);
continue;
}
printf("[WARNING] adding character %c for -x, note that '1' will add all numbers from 0-9\n", tmp[i]);
}
if (tolower((int) tmp[i]) >= 'b' && tolower((int) tmp[i]) <= 'z') {
if ((tmp[i] <= 'Z' && (flags & BF_UPPER) > 0) || (tmp[i] > 'Z' && (flags & BF_UPPER) > 0)) {
printf("[ERROR] character %c defined in -x although the whole letter range was already defined by '%c', ignored\n", tmp[i], tmp[i] <= 'Z' ? 'A' : 'a');
continue;
}
printf("[WARNING] adding character %c for -x, note that '%c' will add all %scase letters\n", tmp[i], tmp[i] <= 'Z' ? 'A' : 'a', tmp[i] <= 'Z' ? "up" : "low");
}
crs_len++;
if (BF_CHARSMAX - crs_len < 1) {
free(bf_options.crs);
fprintf(stderr, "Error: charset specification exceeds %d characters.\n", BF_CHARSMAX);
if (add_single_char(tmp[i], flags, &crs_len) == -1)
return 1;
} else {
bf_options.crs[crs_len - 1] = tmp[i];
bf_options.crs[crs_len] = '\0';
}
break;
}
}
}
bf_options.crs_len = crs_len;
bf_options.current = bf_options.from;

1
bfg.h
View file

@ -40,6 +40,7 @@ typedef struct {
char *arg; /* argument received for bfg commandline option */
char *crs; /* internal representation of charset */
char *ptr; /* ptr to the last generated password */
unsigned int disable_symbols;
} bf_option;
extern bf_option bf_options;

16
hydra.c
View file

@ -336,8 +336,10 @@ void help(int ext) {
printf(" -l LOGIN or -L FILE login with LOGIN name, or load several logins from FILE\n");
printf(" -p PASS or -P FILE try password PASS, or load several passwords from FILE\n");
#ifdef HAVE_MATH_H
if (ext)
if (ext) {
printf(" -x MIN:MAX:CHARSET password bruteforce generation, type \"-x -h\" to get help\n");
printf(" -y disable use of symbols in bruteforce, see above\n");
}
#endif
if (ext)
printf(" -e nsr try \"n\" null password, \"s\" login as pass and/or \"r\" reversed login\n");
@ -400,11 +402,13 @@ void help_bfg() {
" CHARSET is a specification of the characters to use in the generation\n"
" valid CHARSET values are: 'a' for lowercase letters,\n"
" 'A' for uppercase letters, '1' for numbers, and for all others,\n"
" just add their real representation.\n\n"
" just add their real representation.\n"
" -y disable the use if the above letters as placeholders\n\n"
"Examples:\n"
" -x 3:5:a generate passwords from length 3 to 5 with all lowercase letters\n"
" -x 5:8:A1 generate passwords from length 5 to 8 with uppercase and numbers\n"
" -x 1:3:/ generate passwords from length 1 to 3 containing only slashes\n" " -x 5:5:/%%,.- generate passwords with length 5 which consists only of /%%,.-\n");
" -x 1:3:/ generate passwords from length 1 to 3 containing only slashes\n" " -x 5:5:/%%,.- generate passwords with length 5 which consists only of /%%,.-\n"
" -x 3:5:aA1 -y generate passwords from length 3 to 5 with a, A and 1 only\n");
printf("\nThe bruteforce mode was made by Jan Dlabal, http://houbysoft.com/bfg/\n");
exit(-1);
}
@ -2306,13 +2310,14 @@ int main(int argc, char *argv[]) {
hydra_brains.ofp = stdout;
hydra_brains.targets = 1;
hydra_options.waittime = waittime = WAITTIME;
bf_options.disable_symbols = 0;
// command line processing
if (argc > 1 && strncmp(argv[1], "-h", 2) == 0)
help(1);
if (argc < 2)
help(0);
while ((i = getopt(argc, argv, "hq64Rde:vVl:fFg:L:p:OP:o:M:C:t:T:m:w:W:s:SUux:")) >= 0) {
while ((i = getopt(argc, argv, "hq64Rde:vVl:fFg:L:p:OP:o:M:C:t:T:m:w:W:s:SUux:y")) >= 0) {
switch (i) {
case 'h':
help(1);
@ -2447,6 +2452,9 @@ int main(int argc, char *argv[]) {
hydra_options.loop_mode = 1;
break;
#endif
case 'y':
bf_options.disable_symbols = 1;
break;
default:
exit(-1);
}