mirror of
https://github.com/hashcat/hashcat.git
synced 2024-11-13 19:28:56 +00:00
574 lines
13 KiB
C
574 lines
13 KiB
C
/**
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* Author......: See docs/credits.txt
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* License.....: MIT
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*/
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#include "common.h"
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#include "types.h"
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#include "memory.h"
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#include "event.h"
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#include "convert.h"
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#include "dictstat.h"
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#include "thread.h"
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#include "rp.h"
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#include "rp_cpu.h"
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#include "shared.h"
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#include "wordlist.h"
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u32 convert_from_hex (hashcat_ctx_t *hashcat_ctx, char *line_buf, const u32 line_len)
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{
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const user_options_t *user_options = hashcat_ctx->user_options;
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if (line_len & 1) return (line_len); // not in hex
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if (user_options->hex_wordlist == true)
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{
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size_t i, j;
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for (i = 0, j = 0; j < line_len; i += 1, j += 2)
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{
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line_buf[i] = hex_to_u8 ((const u8 *) &line_buf[j]);
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}
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memset (line_buf + i, 0, line_len - i);
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return (i);
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}
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if (user_options->wordlist_autohex_disable == false)
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{
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if (is_hexify ((const u8 *) line_buf, (const int) line_len) == true)
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{
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const int new_len = exec_unhexify ((const u8 *) line_buf, (const int) line_len, (u8 *) line_buf, (const int) line_len);
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return (u32) new_len;
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}
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}
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return (line_len);
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}
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int load_segment (hashcat_ctx_t *hashcat_ctx, FILE *fd)
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{
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wl_data_t *wl_data = hashcat_ctx->wl_data;
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// NOTE: use (never changing) ->incr here instead of ->avail otherwise the buffer gets bigger and bigger
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wl_data->pos = 0;
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wl_data->cnt = hc_fread (wl_data->buf, 1, wl_data->incr - 1000, fd);
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wl_data->buf[wl_data->cnt] = 0;
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if (wl_data->cnt == 0) return 0;
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if (wl_data->buf[wl_data->cnt - 1] == '\n') return 0;
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while (!feof (fd))
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{
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if (wl_data->cnt == wl_data->avail)
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{
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wl_data->buf = (char *) hcrealloc (wl_data->buf, wl_data->avail, wl_data->incr);
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wl_data->avail += wl_data->incr;
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}
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const int c = fgetc (fd);
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if (c == EOF) break;
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wl_data->buf[wl_data->cnt] = (char) c;
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wl_data->cnt++;
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if (c == '\n') break;
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}
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// ensure stream ends with a newline
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if (wl_data->buf[wl_data->cnt - 1] != '\n')
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{
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wl_data->cnt++;
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wl_data->buf[wl_data->cnt - 1] = '\n';
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}
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return 0;
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}
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void get_next_word_lm (char *buf, u64 sz, u64 *len, u64 *off)
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{
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char *ptr = buf;
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for (u64 i = 0; i < sz; i++, ptr++)
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{
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if (*ptr >= 'a' && *ptr <= 'z') *ptr -= 0x20;
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if (i == 7)
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{
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*off = i;
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*len = i;
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return;
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}
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if (*ptr != '\n') continue;
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*off = i + 1;
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if ((i > 0) && (buf[i - 1] == '\r')) i--;
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*len = i;
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return;
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}
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*off = sz;
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*len = sz;
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}
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void get_next_word_uc (char *buf, u64 sz, u64 *len, u64 *off)
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{
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char *ptr = buf;
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for (u64 i = 0; i < sz; i++, ptr++)
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{
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if (*ptr >= 'a' && *ptr <= 'z') *ptr -= 0x20;
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if (*ptr != '\n') continue;
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*off = i + 1;
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if ((i > 0) && (buf[i - 1] == '\r')) i--;
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*len = i;
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return;
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}
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*off = sz;
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*len = sz;
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}
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void get_next_word_std (char *buf, u64 sz, u64 *len, u64 *off)
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{
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char *ptr = buf;
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for (u64 i = 0; i < sz; i++, ptr++)
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{
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if (*ptr != '\n') continue;
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*off = i + 1;
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if ((i > 0) && (buf[i - 1] == '\r')) i--;
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*len = i;
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return;
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}
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*off = sz;
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*len = sz;
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}
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void get_next_word (hashcat_ctx_t *hashcat_ctx, FILE *fd, char **out_buf, u32 *out_len)
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{
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user_options_t *user_options = hashcat_ctx->user_options;
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user_options_extra_t *user_options_extra = hashcat_ctx->user_options_extra;
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wl_data_t *wl_data = hashcat_ctx->wl_data;
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while (wl_data->pos < wl_data->cnt)
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{
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u64 off;
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u64 len;
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char *ptr = wl_data->buf + wl_data->pos;
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wl_data->func (ptr, wl_data->cnt - wl_data->pos, &len, &off);
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wl_data->pos += off;
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// do the on-the-fly encoding
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if (wl_data->iconv_enabled == true)
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{
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char *iconv_ptr = wl_data->iconv_tmp;
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size_t iconv_sz = HCBUFSIZ_TINY;
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size_t ptr_len = len;
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const size_t iconv_rc = iconv (wl_data->iconv_ctx, &ptr, &ptr_len, &iconv_ptr, &iconv_sz);
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if (iconv_rc == (size_t) -1) continue;
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ptr = wl_data->iconv_tmp;
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len = HCBUFSIZ_TINY - iconv_sz;
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}
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if (run_rule_engine (user_options_extra->rule_len_l, user_options->rule_buf_l))
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{
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if (len >= RP_PASSWORD_SIZE) continue;
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char rule_buf_out[RP_PASSWORD_SIZE];
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memset (rule_buf_out, 0, sizeof (rule_buf_out));
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const int rule_len_out = _old_apply_rule (user_options->rule_buf_l, user_options_extra->rule_len_l, ptr, len, rule_buf_out);
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if (rule_len_out < 0) continue;
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}
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if (len >= PW_MAX) continue;
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*out_buf = ptr;
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*out_len = len;
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return;
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}
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if (feof (fd))
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{
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fprintf (stderr, "BUG feof()!!\n");
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return;
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}
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load_segment (hashcat_ctx, fd);
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get_next_word (hashcat_ctx, fd, out_buf, out_len);
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}
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void pw_add (hc_device_param_t *device_param, const u8 *pw_buf, const int pw_len)
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{
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if (device_param->pws_cnt < device_param->kernel_power)
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{
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pw_t *pw = device_param->pws_buf + device_param->pws_cnt;
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u8 *ptr = (u8 *) pw->i;
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memcpy (ptr, pw_buf, pw_len);
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//memset zero to entire buffer done in outer loop
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//memset (ptr + pw_len, 0, sizeof (pw->i) - pw_len);
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pw->pw_len = pw_len;
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device_param->pws_cnt++;
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}
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else
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{
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fprintf (stderr, "BUG pw_add()!!\n");
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return;
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}
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}
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int count_words (hashcat_ctx_t *hashcat_ctx, FILE *fd, const char *dictfile, u64 *result)
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{
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combinator_ctx_t *combinator_ctx = hashcat_ctx->combinator_ctx;
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hashconfig_t *hashconfig = hashcat_ctx->hashconfig;
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straight_ctx_t *straight_ctx = hashcat_ctx->straight_ctx;
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mask_ctx_t *mask_ctx = hashcat_ctx->mask_ctx;
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user_options_extra_t *user_options_extra = hashcat_ctx->user_options_extra;
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user_options_t *user_options = hashcat_ctx->user_options;
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wl_data_t *wl_data = hashcat_ctx->wl_data;
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//hc_signal (NULL);
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dictstat_t d;
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d.cnt = 0;
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if (hc_fstat (fileno (fd), &d.stat))
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{
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*result = 0;
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return 0;
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}
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d.stat.st_mode = 0;
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d.stat.st_nlink = 0;
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d.stat.st_uid = 0;
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d.stat.st_gid = 0;
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d.stat.st_rdev = 0;
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d.stat.st_atime = 0;
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#if defined (STAT_NANOSECONDS_ACCESS_TIME)
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d.stat.STAT_NANOSECONDS_ACCESS_TIME = 0;
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#endif
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#if defined (_POSIX)
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d.stat.st_blksize = 0;
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d.stat.st_blocks = 0;
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#endif
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memset (d.encoding_from, 0, sizeof (d.encoding_from));
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memset (d.encoding_to, 0, sizeof (d.encoding_to));
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strncpy (d.encoding_from, user_options->encoding_from, sizeof (d.encoding_from));
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strncpy (d.encoding_to, user_options->encoding_to, sizeof (d.encoding_to));
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if (d.stat.st_size == 0)
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{
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*result = 0;
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return 0;
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}
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const u64 cached_cnt = dictstat_find (hashcat_ctx, &d);
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if (run_rule_engine (user_options_extra->rule_len_l, user_options->rule_buf_l) == 0)
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{
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if (cached_cnt)
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{
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u64 keyspace = cached_cnt;
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if (user_options_extra->attack_kern == ATTACK_KERN_STRAIGHT)
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{
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if (overflow_check_u64_mul (keyspace, straight_ctx->kernel_rules_cnt) == false) return -1;
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keyspace *= straight_ctx->kernel_rules_cnt;
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}
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else if (user_options_extra->attack_kern == ATTACK_KERN_COMBI)
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{
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if (((hashconfig->opti_type & OPTI_TYPE_OPTIMIZED_KERNEL) == 0) && (user_options->attack_mode == ATTACK_MODE_HYBRID2))
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{
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if (overflow_check_u64_mul (keyspace, mask_ctx->bfs_cnt) == false) return -1;
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keyspace *= mask_ctx->bfs_cnt;
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}
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else
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{
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if (overflow_check_u64_mul (keyspace, combinator_ctx->combs_cnt) == false) return -1;
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keyspace *= combinator_ctx->combs_cnt;
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}
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}
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cache_hit_t cache_hit;
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cache_hit.dictfile = dictfile;
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cache_hit.stat.st_size = d.stat.st_size;
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cache_hit.cached_cnt = cached_cnt;
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cache_hit.keyspace = keyspace;
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EVENT_DATA (EVENT_WORDLIST_CACHE_HIT, &cache_hit, sizeof (cache_hit));
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*result = keyspace;
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return 0;
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}
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}
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hc_time_t rt_start;
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hc_time (&rt_start);
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hc_time_t now = 0;
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hc_time_t prev = 0;
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u64 comp = 0;
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u64 cnt = 0;
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u64 cnt2 = 0;
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while (!feof (fd))
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{
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load_segment (hashcat_ctx, fd);
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comp += wl_data->cnt;
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u64 i = 0;
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while (i < wl_data->cnt)
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{
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u64 len;
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u64 off;
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char *ptr = wl_data->buf + i;
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wl_data->func (ptr, wl_data->cnt - i, &len, &off);
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i += off;
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// do the on-the-fly encoding
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if (wl_data->iconv_enabled == true)
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{
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char *iconv_ptr = wl_data->iconv_tmp;
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size_t iconv_sz = HCBUFSIZ_TINY;
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size_t ptr_len = len;
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const size_t iconv_rc = iconv (wl_data->iconv_ctx, &ptr, &ptr_len, &iconv_ptr, &iconv_sz);
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if (iconv_rc == (size_t) -1) continue;
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ptr = wl_data->iconv_tmp;
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len = HCBUFSIZ_TINY - iconv_sz;
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}
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if (run_rule_engine (user_options_extra->rule_len_l, user_options->rule_buf_l))
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{
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if (len >= RP_PASSWORD_SIZE) continue;
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char rule_buf_out[RP_PASSWORD_SIZE];
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memset (rule_buf_out, 0, sizeof (rule_buf_out));
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const int rule_len_out = _old_apply_rule (user_options->rule_buf_l, user_options_extra->rule_len_l, ptr, len, rule_buf_out);
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if (rule_len_out < 0) continue;
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}
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cnt2++;
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if (len >= PW_MAX) continue;
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d.cnt++;
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if (user_options_extra->attack_kern == ATTACK_KERN_STRAIGHT)
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{
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if (overflow_check_u64_add (cnt, straight_ctx->kernel_rules_cnt) == false) return -1;
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cnt += straight_ctx->kernel_rules_cnt;
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}
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else if (user_options_extra->attack_kern == ATTACK_KERN_COMBI)
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{
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if (((hashconfig->opti_type & OPTI_TYPE_OPTIMIZED_KERNEL) == 0) && (user_options->attack_mode == ATTACK_MODE_HYBRID2))
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{
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if (overflow_check_u64_add (cnt, mask_ctx->bfs_cnt) == false) return -1;
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cnt += mask_ctx->bfs_cnt;
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}
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else
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{
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if (overflow_check_u64_add (cnt, combinator_ctx->combs_cnt) == false) return -1;
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cnt += combinator_ctx->combs_cnt;
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}
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}
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}
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hc_time (&now);
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if ((now - prev) == 0) continue;
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hc_time (&prev);
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double percent = ((double) comp / (double) d.stat.st_size) * 100;
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if (percent < 100)
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{
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cache_generate_t cache_generate;
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cache_generate.dictfile = dictfile;
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cache_generate.comp = comp;
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cache_generate.percent = percent;
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cache_generate.cnt = cnt;
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cache_generate.cnt2 = cnt2;
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EVENT_DATA (EVENT_WORDLIST_CACHE_GENERATE, &cache_generate, sizeof (cache_generate));
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}
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}
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hc_time_t rt_stop;
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hc_time (&rt_stop);
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cache_generate_t cache_generate;
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cache_generate.dictfile = dictfile;
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cache_generate.comp = comp;
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cache_generate.percent = 100;
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cache_generate.cnt = cnt;
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cache_generate.cnt2 = cnt2;
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cache_generate.runtime = rt_stop - rt_start;
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EVENT_DATA (EVENT_WORDLIST_CACHE_GENERATE, &cache_generate, sizeof (cache_generate));
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dictstat_append (hashcat_ctx, &d);
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//hc_signal (sigHandler_default);
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*result = cnt;
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return 0;
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}
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int wl_data_init (hashcat_ctx_t *hashcat_ctx)
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{
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hashconfig_t *hashconfig = hashcat_ctx->hashconfig;
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user_options_t *user_options = hashcat_ctx->user_options;
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wl_data_t *wl_data = hashcat_ctx->wl_data;
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wl_data->enabled = false;
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if (user_options->benchmark == true) return 0;
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if (user_options->example_hashes == true) return 0;
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if (user_options->left == true) return 0;
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if (user_options->opencl_info == true) return 0;
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if (user_options->usage == true) return 0;
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if (user_options->version == true) return 0;
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wl_data->enabled = true;
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wl_data->buf = (char *) hcmalloc (user_options->segment_size);
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wl_data->avail = user_options->segment_size;
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wl_data->incr = user_options->segment_size;
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wl_data->cnt = 0;
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wl_data->pos = 0;
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/**
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* choose dictionary parser
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*/
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wl_data->func = get_next_word_std;
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if (hashconfig->opts_type & OPTS_TYPE_PT_UPPER)
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{
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wl_data->func = get_next_word_uc;
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}
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if (hashconfig->hash_mode == 3000) // yes that's fine that way
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{
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wl_data->func = get_next_word_lm;
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}
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/**
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* iconv
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*/
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if (strcmp (user_options->encoding_from, user_options->encoding_to) != 0)
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{
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wl_data->iconv_enabled = true;
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wl_data->iconv_ctx = iconv_open (user_options->encoding_to, user_options->encoding_from);
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if (wl_data->iconv_ctx == (iconv_t) -1) return -1;
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wl_data->iconv_tmp = (char *) hcmalloc (HCBUFSIZ_TINY);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void wl_data_destroy (hashcat_ctx_t *hashcat_ctx)
|
|
{
|
|
wl_data_t *wl_data = hashcat_ctx->wl_data;
|
|
|
|
if (wl_data->enabled == false) return;
|
|
|
|
hcfree (wl_data->buf);
|
|
|
|
if (wl_data->iconv_enabled == true)
|
|
{
|
|
iconv_close (wl_data->iconv_ctx);
|
|
|
|
wl_data->iconv_enabled = false;
|
|
|
|
hcfree (wl_data->iconv_tmp);
|
|
}
|
|
|
|
memset (wl_data, 0, sizeof (wl_data_t));
|
|
}
|