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hashcat/src/mpsp.c
Dávid Bolvanský 454b0ad294 Do not hexify worldlist when --hex-charset is used
2022-09-06 01:25:23 +02:00

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/**
* Author......: See docs/credits.txt
* License.....: MIT
*/
#include "common.h"
#include "types.h"
#include "memory.h"
#include "event.h"
#include "bitops.h"
#include "logfile.h"
#include "convert.h"
#include "filehandling.h"
#include "backend.h"
#include "shared.h"
#include "ext_lzma.h"
#include "mpsp.h"
static const char *const DEF_MASK = "?1?2?2?2?2?2?2?3?3?3?3?d?d?d?d";
#define MAX_MFS 5 // 4*charset, 1*mask
static int sp_comp_val (const void *p1, const void *p2)
{
const hcstat_table_t *b1 = (const hcstat_table_t *) p1;
const hcstat_table_t *b2 = (const hcstat_table_t *) p2;
const u64 v1 = b1->val;
const u64 v2 = b2->val;
if (v1 < v2) return 1;
if (v1 > v2) return -1;
return 0;
}
static void mp_css_split_cnt (hashcat_ctx_t *hashcat_ctx, const u32 css_cnt_orig, u32 css_cnt_lr[2])
{
const mask_ctx_t *mask_ctx = hashcat_ctx->mask_ctx;
const hashconfig_t *hashconfig = hashcat_ctx->hashconfig;
const user_options_t *user_options = hashcat_ctx->user_options;
u32 css_cnt_l = mask_ctx->css_cnt;
u32 css_cnt_r;
if (user_options->slow_candidates == true)
{
css_cnt_r = 0;
}
else
{
if (hashconfig->attack_exec == ATTACK_EXEC_INSIDE_KERNEL)
{
if (css_cnt_orig < 6)
{
css_cnt_r = 1;
}
else if (css_cnt_orig == 6)
{
css_cnt_r = 2;
}
else
{
if ((hashconfig->opts_type & OPTS_TYPE_PT_UTF16LE) || (hashconfig->opts_type & OPTS_TYPE_PT_UTF16BE))
{
if (css_cnt_orig == 8 || css_cnt_orig == 10)
{
css_cnt_r = 2;
}
else
{
css_cnt_r = 4;
}
}
else
{
if ((mask_ctx->css_buf[0].cs_len * mask_ctx->css_buf[1].cs_len * mask_ctx->css_buf[2].cs_len) > 256)
{
css_cnt_r = 3;
}
else
{
css_cnt_r = 4;
}
}
}
}
else
{
css_cnt_r = 1;
/* unfinished code?
int sum = css_buf[css_cnt_r - 1].cs_len;
for (u32 i = 1; i < 4 && i < css_cnt; i++)
{
if (sum > 1) break; // we really don't need alot of amplifier them for slow hashes
css_cnt_r++;
sum *= css_buf[css_cnt_r - 1].cs_len;
}
*/
}
}
css_cnt_l -= css_cnt_r;
css_cnt_lr[0] = css_cnt_l;
css_cnt_lr[1] = css_cnt_r;
}
static int mp_css_append_salt (hashcat_ctx_t *hashcat_ctx, salt_t *salt_buf)
{
mask_ctx_t *mask_ctx = hashcat_ctx->mask_ctx;
u32 salt_len = salt_buf->salt_len;
u8 *salt_buf_ptr = (u8 *) salt_buf->salt_buf;
if ((mask_ctx->css_cnt + salt_len) > 256) return -1;
for (u32 i = 0, j = mask_ctx->css_cnt; i < salt_len; i++, j++)
{
mask_ctx->css_buf[j].cs_buf[0] = salt_buf_ptr[i];
mask_ctx->css_buf[j].cs_len = 1;
mask_ctx->css_cnt++;
}
return 0;
}
static int mp_css_utf16le_expand (hashcat_ctx_t *hashcat_ctx)
{
mask_ctx_t *mask_ctx = hashcat_ctx->mask_ctx;
u32 css_cnt_utf16le = mask_ctx->css_cnt * 2;
if (css_cnt_utf16le > 256) return -1;
cs_t *css_buf_utf16le = (cs_t *) hccalloc (css_cnt_utf16le, sizeof (cs_t));
for (u32 i = 0, j = 0; i < mask_ctx->css_cnt; i += 1, j += 2)
{
memcpy (&css_buf_utf16le[j + 0], &mask_ctx->css_buf[i], sizeof (cs_t));
css_buf_utf16le[j + 1].cs_buf[0] = 0;
css_buf_utf16le[j + 1].cs_len = 1;
}
memcpy (mask_ctx->css_buf, css_buf_utf16le, css_cnt_utf16le * sizeof (cs_t));
mask_ctx->css_cnt = css_cnt_utf16le;
hcfree (css_buf_utf16le);
return 0;
}
static int mp_css_utf16be_expand (hashcat_ctx_t *hashcat_ctx)
{
mask_ctx_t *mask_ctx = hashcat_ctx->mask_ctx;
u32 css_cnt_utf16be = mask_ctx->css_cnt * 2;
if (css_cnt_utf16be > 256) return -1;
cs_t *css_buf_utf16be = (cs_t *) hccalloc (css_cnt_utf16be, sizeof (cs_t));
for (u32 i = 0, j = 0; i < mask_ctx->css_cnt; i += 1, j += 2)
{
css_buf_utf16be[j + 0].cs_buf[0] = 0;
css_buf_utf16be[j + 0].cs_len = 1;
memcpy (&css_buf_utf16be[j + 1], &mask_ctx->css_buf[i], sizeof (cs_t));
}
memcpy (mask_ctx->css_buf, css_buf_utf16be, css_cnt_utf16be * sizeof (cs_t));
mask_ctx->css_cnt = css_cnt_utf16be;
hcfree (css_buf_utf16be);
return 0;
}
static int mp_css_to_uniq_tbl (hashcat_ctx_t *hashcat_ctx, u32 css_cnt, cs_t *css, u32 uniq_tbls[SP_PW_MAX][CHARSIZ])
{
/* generates a lookup table where key is the char itself for fastest possible lookup performance */
if (css_cnt > SP_PW_MAX)
{
event_log_error (hashcat_ctx, "Mask length is too long.");
return -1;
}
for (u32 css_pos = 0; css_pos < css_cnt; css_pos++)
{
u32 *uniq_tbl = uniq_tbls[css_pos];
u32 *cs_buf = css[css_pos].cs_buf;
u32 cs_len = css[css_pos].cs_len;
for (u32 cs_pos = 0; cs_pos < cs_len; cs_pos++)
{
u32 c = cs_buf[cs_pos] & 0xff;
uniq_tbl[c] = 1;
}
}
return 0;
}
static int mp_add_cs_buf (hashcat_ctx_t *hashcat_ctx, const u32 *in_buf, size_t in_len, cs_t *css, u32 css_cnt)
{
const hashconfig_t *hashconfig = hashcat_ctx->hashconfig;
if (css_cnt == 256)
{
event_log_error (hashcat_ctx, "Invalid mask length.");
return -1;
}
cs_t *cs = &css[css_cnt];
size_t css_uniq_sz = CHARSIZ * sizeof (u32);
u32 *css_uniq = (u32 *) hcmalloc (css_uniq_sz);
size_t i;
for (i = 0; i < cs->cs_len; i++)
{
const u32 u = cs->cs_buf[i];
css_uniq[u] = 1;
}
for (i = 0; i < in_len; i++)
{
u32 u = in_buf[i] & 0xff;
if (hashconfig->opts_type & OPTS_TYPE_PT_UPPER) u = (u32) toupper (u);
if (css_uniq[u] == 1) continue;
css_uniq[u] = 1;
cs->cs_buf[cs->cs_len] = u;
cs->cs_len++;
}
hcfree (css_uniq);
return 0;
}
static int mp_expand (hashcat_ctx_t *hashcat_ctx, const char *in_buf, size_t in_len, cs_t *mp_sys, cs_t *mp_usr, u32 mp_usr_offset, int interpret)
{
const hashconfig_t *hashconfig = hashcat_ctx->hashconfig;
size_t in_pos;
for (in_pos = 0; in_pos < in_len; in_pos++)
{
u32 p0 = in_buf[in_pos] & 0xff;
if (interpret == 1 && p0 == '?')
{
in_pos++;
if (in_pos == in_len)
{
event_log_error (hashcat_ctx, "Syntax error in mask: %s", in_buf);
return -1;
}
u32 p1 = in_buf[in_pos] & 0xff;
int rc = 0;
switch (p1)
{
case 'l': rc = mp_add_cs_buf (hashcat_ctx, mp_sys[0].cs_buf, mp_sys[0].cs_len, mp_usr, mp_usr_offset);
break;
case 'u': rc = mp_add_cs_buf (hashcat_ctx, mp_sys[1].cs_buf, mp_sys[1].cs_len, mp_usr, mp_usr_offset);
break;
case 'd': rc = mp_add_cs_buf (hashcat_ctx, mp_sys[2].cs_buf, mp_sys[2].cs_len, mp_usr, mp_usr_offset);
break;
case 's': rc = mp_add_cs_buf (hashcat_ctx, mp_sys[3].cs_buf, mp_sys[3].cs_len, mp_usr, mp_usr_offset);
break;
case 'a': rc = mp_add_cs_buf (hashcat_ctx, mp_sys[4].cs_buf, mp_sys[4].cs_len, mp_usr, mp_usr_offset);
break;
case 'b': rc = mp_add_cs_buf (hashcat_ctx, mp_sys[5].cs_buf, mp_sys[5].cs_len, mp_usr, mp_usr_offset);
break;
case 'h': rc = mp_add_cs_buf (hashcat_ctx, mp_sys[6].cs_buf, mp_sys[6].cs_len, mp_usr, mp_usr_offset);
break;
case 'H': rc = mp_add_cs_buf (hashcat_ctx, mp_sys[7].cs_buf, mp_sys[7].cs_len, mp_usr, mp_usr_offset);
break;
case '1': if (mp_usr[0].cs_len == 0) { event_log_error (hashcat_ctx, "Custom-charset 1 is undefined."); return -1; }
rc = mp_add_cs_buf (hashcat_ctx, mp_usr[0].cs_buf, mp_usr[0].cs_len, mp_usr, mp_usr_offset);
break;
case '2': if (mp_usr[1].cs_len == 0) { event_log_error (hashcat_ctx, "Custom-charset 2 is undefined."); return -1; }
rc = mp_add_cs_buf (hashcat_ctx, mp_usr[1].cs_buf, mp_usr[1].cs_len, mp_usr, mp_usr_offset);
break;
case '3': if (mp_usr[2].cs_len == 0) { event_log_error (hashcat_ctx, "Custom-charset 3 is undefined."); return -1; }
rc = mp_add_cs_buf (hashcat_ctx, mp_usr[2].cs_buf, mp_usr[2].cs_len, mp_usr, mp_usr_offset);
break;
case '4': if (mp_usr[3].cs_len == 0) { event_log_error (hashcat_ctx, "Custom-charset 4 is undefined."); return -1; }
rc = mp_add_cs_buf (hashcat_ctx, mp_usr[3].cs_buf, mp_usr[3].cs_len, mp_usr, mp_usr_offset);
break;
case '?': rc = mp_add_cs_buf (hashcat_ctx, &p0, 1, mp_usr, mp_usr_offset);
break;
default: event_log_error (hashcat_ctx, "Syntax error in mask: %s", in_buf);
return -1;
}
if (rc == -1) return -1;
}
else
{
if (hashconfig->opts_type & OPTS_TYPE_MT_HEX)
{
in_pos++;
if (in_pos == in_len)
{
event_log_error (hashcat_ctx, "The hex-charset option expects exactly 2 hexadecimal chars. Failed mask: %s", in_buf);
return -1;
}
u32 p1 = in_buf[in_pos] & 0xff;
if ((is_valid_hex_char ((u8) p0) == false) || (is_valid_hex_char ((u8) p1) == false))
{
event_log_error (hashcat_ctx, "Invalid hex character detected in mask %s", in_buf);
return -1;
}
u32 chr = 0;
chr = (u32) hex_convert ((u8) p1) << 0;
chr |= (u32) hex_convert ((u8) p0) << 4;
const int rc = mp_add_cs_buf (hashcat_ctx, &chr, 1, mp_usr, mp_usr_offset);
if (rc == -1) return -1;
}
else
{
u32 chr = p0;
const int rc = mp_add_cs_buf (hashcat_ctx, &chr, 1, mp_usr, mp_usr_offset);
if (rc == -1) return -1;
}
}
}
return 0;
}
static int mp_gen_css (hashcat_ctx_t *hashcat_ctx, char *mask_buf, size_t mask_len, cs_t *mp_sys, cs_t *mp_usr, cs_t *css_buf, u32 *css_cnt)
{
const hashconfig_t *hashconfig = hashcat_ctx->hashconfig;
memset (css_buf, 0, 256 * sizeof (cs_t));
size_t mask_pos;
size_t css_pos;
for (mask_pos = 0, css_pos = 0; mask_pos < mask_len; mask_pos++, css_pos++)
{
char p0 = mask_buf[mask_pos];
if (p0 == '?')
{
mask_pos++;
if (mask_pos == mask_len)
{
event_log_error (hashcat_ctx, "Syntax error in mask: %s", mask_buf);
return -1;
}
char p1 = mask_buf[mask_pos];
u32 chr = (u32) p1;
int rc = 0;
switch (p1)
{
case 'l': rc = mp_add_cs_buf (hashcat_ctx, mp_sys[0].cs_buf, mp_sys[0].cs_len, css_buf, css_pos);
break;
case 'u': rc = mp_add_cs_buf (hashcat_ctx, mp_sys[1].cs_buf, mp_sys[1].cs_len, css_buf, css_pos);
break;
case 'd': rc = mp_add_cs_buf (hashcat_ctx, mp_sys[2].cs_buf, mp_sys[2].cs_len, css_buf, css_pos);
break;
case 's': rc = mp_add_cs_buf (hashcat_ctx, mp_sys[3].cs_buf, mp_sys[3].cs_len, css_buf, css_pos);
break;
case 'a': rc = mp_add_cs_buf (hashcat_ctx, mp_sys[4].cs_buf, mp_sys[4].cs_len, css_buf, css_pos);
break;
case 'b': rc = mp_add_cs_buf (hashcat_ctx, mp_sys[5].cs_buf, mp_sys[5].cs_len, css_buf, css_pos);
break;
case 'h': rc = mp_add_cs_buf (hashcat_ctx, mp_sys[6].cs_buf, mp_sys[6].cs_len, css_buf, css_pos);
break;
case 'H': rc = mp_add_cs_buf (hashcat_ctx, mp_sys[7].cs_buf, mp_sys[7].cs_len, css_buf, css_pos);
break;
case '1': if (mp_usr[0].cs_len == 0) { event_log_error (hashcat_ctx, "Custom-charset 1 is undefined."); return -1; }
rc = mp_add_cs_buf (hashcat_ctx, mp_usr[0].cs_buf, mp_usr[0].cs_len, css_buf, css_pos);
break;
case '2': if (mp_usr[1].cs_len == 0) { event_log_error (hashcat_ctx, "Custom-charset 2 is undefined."); return -1; }
rc = mp_add_cs_buf (hashcat_ctx, mp_usr[1].cs_buf, mp_usr[1].cs_len, css_buf, css_pos);
break;
case '3': if (mp_usr[2].cs_len == 0) { event_log_error (hashcat_ctx, "Custom-charset 3 is undefined."); return -1; }
rc = mp_add_cs_buf (hashcat_ctx, mp_usr[2].cs_buf, mp_usr[2].cs_len, css_buf, css_pos);
break;
case '4': if (mp_usr[3].cs_len == 0) { event_log_error (hashcat_ctx, "Custom-charset 4 is undefined."); return -1; }
rc = mp_add_cs_buf (hashcat_ctx, mp_usr[3].cs_buf, mp_usr[3].cs_len, css_buf, css_pos);
break;
case '?': rc = mp_add_cs_buf (hashcat_ctx, &chr, 1, css_buf, css_pos);
break;
default: event_log_error (hashcat_ctx, "Syntax error in mask: %s", mask_buf);
return -1;
}
if (rc == -1) return -1;
}
else
{
if (hashconfig->opts_type & OPTS_TYPE_MT_HEX)
{
mask_pos++;
// if there is no 2nd hex character, show an error:
if (mask_pos == mask_len)
{
event_log_error (hashcat_ctx, "The hex-charset option expects exactly 2 hexadecimal chars. Failed mask: %s", mask_buf);
return -1;
}
char p1 = mask_buf[mask_pos];
// if they are not valid hex character, show an error:
if ((is_valid_hex_char ((u8) p0) == false) || (is_valid_hex_char ((u8) p1) == false))
{
event_log_error (hashcat_ctx, "Invalid hex character detected in mask %s", mask_buf);
return -1;
}
u32 chr = 0;
chr |= (u32) hex_convert ((u8) p1) << 0;
chr |= (u32) hex_convert ((u8) p0) << 4;
const int rc = mp_add_cs_buf (hashcat_ctx, &chr, 1, css_buf, css_pos);
if (rc == -1) return -1;
}
else
{
u32 chr = (u32) p0;
const int rc = mp_add_cs_buf (hashcat_ctx, &chr, 1, css_buf, css_pos);
if (rc == -1) return -1;
}
}
}
if (css_pos == 0)
{
event_log_error (hashcat_ctx, "Invalid mask length (0).");
return -1;
}
*css_cnt = css_pos;
return 0;
}
static int mp_get_truncated_mask (hashcat_ctx_t *hashcat_ctx, const char *mask_buf, const size_t mask_len, const u32 len, char *new_mask_buf)
{
const hashconfig_t *hashconfig = hashcat_ctx->hashconfig;
u32 mask_pos;
u32 css_pos;
for (mask_pos = 0, css_pos = 0; mask_pos < mask_len; mask_pos++, css_pos++)
{
if (css_pos == len) break;
char p0 = mask_buf[mask_pos];
new_mask_buf[mask_pos] = p0;
if (p0 == '?')
{
mask_pos++;
if (mask_pos == mask_len) break;
new_mask_buf[mask_pos] = mask_buf[mask_pos];
}
else
{
if (hashconfig->opts_type & OPTS_TYPE_MT_HEX)
{
mask_pos++;
if (mask_pos == mask_len)
{
event_log_error (hashcat_ctx, "The hex-charset option expects exactly 2 hexadecimal chars. Failed mask: %s", mask_buf);
return -1;
}
char p1 = mask_buf[mask_pos];
// if they are not valid hex character, show an error:
if ((is_valid_hex_char ((u8) p0) == false) || (is_valid_hex_char ((u8) p1) == false))
{
event_log_error (hashcat_ctx, "Invalid hex character detected in mask: %s", mask_buf);
return -1;
}
new_mask_buf[mask_pos] = p1;
}
}
}
return 0;
}
static void mp_setup_sys (cs_t *mp_sys)
{
u32 pos;
u32 chr;
u32 donec[CHARSIZ] = { 0 };
for (pos = 0, chr = 'a'; chr <= 'z'; chr++) { donec[chr] = 1;
mp_sys[0].cs_buf[pos++] = chr;
mp_sys[0].cs_len = pos; }
for (pos = 0, chr = 'A'; chr <= 'Z'; chr++) { donec[chr] = 1;
mp_sys[1].cs_buf[pos++] = chr;
mp_sys[1].cs_len = pos; }
for (pos = 0, chr = '0'; chr <= '9'; chr++) { donec[chr] = 1;
mp_sys[2].cs_buf[pos++] = chr;
mp_sys[2].cs_len = pos; }
for (pos = 0, chr = 0x20; chr <= 0x7e; chr++) { if (donec[chr]) continue;
mp_sys[3].cs_buf[pos++] = chr;
mp_sys[3].cs_len = pos; }
for (pos = 0, chr = 0x20; chr <= 0x7e; chr++) { mp_sys[4].cs_buf[pos++] = chr;
mp_sys[4].cs_len = pos; }
for (pos = 0, chr = 0x00; chr <= 0xff; chr++) { mp_sys[5].cs_buf[pos++] = chr;
mp_sys[5].cs_len = pos; }
for (pos = 0, chr = 0x30; chr <= 0x39; chr++) { mp_sys[6].cs_buf[pos++] = chr;
mp_sys[6].cs_len = pos; }
for (pos = 10, chr = 0x61; chr <= 0x66; chr++) { mp_sys[6].cs_buf[pos++] = chr;
mp_sys[6].cs_len = pos; }
for (pos = 0, chr = 0x30; chr <= 0x39; chr++) { mp_sys[7].cs_buf[pos++] = chr;
mp_sys[7].cs_len = pos; }
for (pos = 10, chr = 0x41; chr <= 0x46; chr++) { mp_sys[7].cs_buf[pos++] = chr;
mp_sys[7].cs_len = pos; }
}
static int mp_setup_usr (hashcat_ctx_t *hashcat_ctx, cs_t *mp_sys, cs_t *mp_usr, const char *buf, const u32 userindex)
{
HCFILE fp;
if (hc_fopen (&fp, buf, "rb") == false)
{
const int rc = mp_expand (hashcat_ctx, buf, strlen (buf), mp_sys, mp_usr, userindex, 1);
if (rc == -1) return -1;
}
else
{
char mp_file[1024];
const size_t nread = hc_fread (mp_file, 1, sizeof (mp_file) - 1, &fp);
if (!hc_feof (&fp))
{
event_log_error (hashcat_ctx, "%s: Custom charset file is too large.", buf);
hc_fclose (&fp);
return -1;
}
hc_fclose (&fp);
if (nread == 0)
{
event_log_error (hashcat_ctx, "%s: Custom charset file is empty.", buf);
return -1;
}
mp_file[nread] = 0;
const size_t len = superchop_with_length (mp_file, nread);
if (len == 0)
{
event_log_error (hashcat_ctx, "%s: Custom charset file is corrupted.", buf);
return -1;
}
const int rc = mp_expand (hashcat_ctx, mp_file, len, mp_sys, mp_usr, userindex, 0);
if (rc == -1) return -1;
}
return 0;
}
static void mp_reset_usr (cs_t *mp_usr, const u32 userindex)
{
mp_usr[userindex].cs_len = 0;
memset (mp_usr[userindex].cs_buf, 0, sizeof (mp_usr[userindex].cs_buf));
}
static int sp_setup_tbl (hashcat_ctx_t *hashcat_ctx)
{
folder_config_t *folder_config = hashcat_ctx->folder_config;
mask_ctx_t *mask_ctx = hashcat_ctx->mask_ctx;
user_options_t *user_options = hashcat_ctx->user_options;
char *shared_dir = folder_config->shared_dir;
char *hcstat = user_options->markov_hcstat2;
u32 disable = user_options->markov_disable;
u32 classic = user_options->markov_classic;
bool inverse = user_options->markov_inverse;
hcstat_table_t *root_table_buf = mask_ctx->root_table_buf;
hcstat_table_t *markov_table_buf = mask_ctx->markov_table_buf;
/**
* Initialize hcstats
*/
u64 *root_stats_buf = (u64 *) hccalloc (SP_ROOT_CNT, sizeof (u64));
u64 *root_stats_ptr = root_stats_buf;
u64 *root_stats_buf_by_pos[SP_PW_MAX];
for (int i = 0; i < SP_PW_MAX; i++)
{
root_stats_buf_by_pos[i] = root_stats_ptr;
root_stats_ptr += CHARSIZ;
}
u64 *markov_stats_buf = (u64 *) hccalloc (SP_MARKOV_CNT, sizeof (u64));
u64 *markov_stats_ptr = markov_stats_buf;
u64 *markov_stats_buf_by_key[SP_PW_MAX][CHARSIZ];
for (int i = 0; i < SP_PW_MAX; i++)
{
for (int j = 0; j < CHARSIZ; j++)
{
markov_stats_buf_by_key[i][j] = markov_stats_ptr;
markov_stats_ptr += CHARSIZ;
}
}
/**
* Load hcstats File
*/
char hcstat_tmp[256];
if (hcstat == NULL)
{
snprintf (hcstat_tmp, sizeof (hcstat_tmp), "%s/%s", shared_dir, SP_HCSTAT);
hcstat = hcstat_tmp;
}
struct stat s;
if (stat (hcstat, &s) == -1)
{
event_log_error (hashcat_ctx, "%s: %s", hcstat, strerror (errno));
return -1;
}
HCFILE fp;
if (hc_fopen_raw (&fp, hcstat, "rb") == false)
{
event_log_error (hashcat_ctx, "%s: %s", hcstat, strerror (errno));
return -1;
}
u8 *inbuf = (u8 *) hcmalloc (s.st_size);
SizeT inlen = (SizeT) hc_fread (inbuf, 1, s.st_size, &fp);
if (inlen != (SizeT) s.st_size)
{
event_log_error (hashcat_ctx, "%s: Could not read data.", hcstat);
hc_fclose (&fp);
hcfree (inbuf);
return -1;
}
hc_fclose (&fp);
u8 *outbuf = (u8 *) hcmalloc (SP_FILESZ);
SizeT outlen = SP_FILESZ;
const char props = 0x1c; // lzma properties constant, retrieved with 7z2hashcat
const SRes res = hc_lzma2_decompress (inbuf, &inlen, outbuf, &outlen, &props);
if (res != SZ_OK)
{
event_log_error (hashcat_ctx, "%s: Could not uncompress data.", hcstat);
hcfree (inbuf);
hcfree (outbuf);
return -1;
}
if (outlen != SP_FILESZ)
{
event_log_error (hashcat_ctx, "%s: Could not uncompress data.", hcstat);
hcfree (inbuf);
hcfree (outbuf);
return -1;
}
u64 *ptr = (u64 *) outbuf;
u64 v = *ptr++;
u64 z = *ptr++;
memcpy (root_stats_buf, ptr, sizeof (u64) * SP_ROOT_CNT); ptr += SP_ROOT_CNT;
memcpy (markov_stats_buf, ptr, sizeof (u64) * SP_MARKOV_CNT); // ptr += SP_MARKOV_CNT;
hcfree (inbuf);
hcfree (outbuf);
/**
* switch endianess
*/
v = byte_swap_64 (v);
z = byte_swap_64 (z);
for (int i = 0; i < SP_ROOT_CNT; i++) root_stats_buf[i] = byte_swap_64 (root_stats_buf[i]);
for (int i = 0; i < SP_MARKOV_CNT; i++) markov_stats_buf[i] = byte_swap_64 (markov_stats_buf[i]);
/**
* markov inverse: https://github.com/hashcat/hashcat/issues/1058
*/
if (inverse == true)
{
for (int i = 0; i < SP_ROOT_CNT; i++) root_stats_buf[i] = 0 - (1 + root_stats_buf[i]);
for (int i = 0; i < SP_MARKOV_CNT; i++) markov_stats_buf[i] = 0 - (1 + markov_stats_buf[i]);
}
/**
* verify header
*/
if (v != SP_VERSION)
{
event_log_error (hashcat_ctx, "%s: Invalid header", hcstat);
return -1;
}
if (z != 0)
{
event_log_error (hashcat_ctx, "%s: Invalid header", hcstat);
return -1;
}
/**
* Markov modifier of hcstat_table on user request
*/
if (disable)
{
memset (root_stats_buf, 0, SP_ROOT_CNT * sizeof (u64));
memset (markov_stats_buf, 0, SP_MARKOV_CNT * sizeof (u64));
}
if (classic)
{
/* Add all stats to first position */
for (int i = 1; i < SP_PW_MAX; i++)
{
u64 *out = root_stats_buf_by_pos[0];
u64 *in = root_stats_buf_by_pos[i];
for (int j = 0; j < CHARSIZ; j++)
{
*out++ += *in++;
}
}
for (int i = 1; i < SP_PW_MAX; i++)
{
u64 *out = markov_stats_buf_by_key[0][0];
u64 *in = markov_stats_buf_by_key[i][0];
for (int j = 0; j < CHARSIZ; j++)
{
for (int k = 0; k < CHARSIZ; k++)
{
*out++ += *in++;
}
}
}
/* copy them to all pw_positions */
for (int i = 1; i < SP_PW_MAX; i++)
{
memcpy (root_stats_buf_by_pos[i], root_stats_buf_by_pos[0], CHARSIZ * sizeof (u64));
}
for (int i = 1; i < SP_PW_MAX; i++)
{
memcpy (markov_stats_buf_by_key[i][0], markov_stats_buf_by_key[0][0], CHARSIZ * CHARSIZ * sizeof (u64));
}
}
/**
* Initialize tables
*/
hcstat_table_t *root_table_ptr = root_table_buf;
hcstat_table_t *root_table_buf_by_pos[SP_PW_MAX];
for (int i = 0; i < SP_PW_MAX; i++)
{
root_table_buf_by_pos[i] = root_table_ptr;
root_table_ptr += CHARSIZ;
}
hcstat_table_t *markov_table_ptr = markov_table_buf;
hcstat_table_t *markov_table_buf_by_key[SP_PW_MAX][CHARSIZ];
for (int i = 0; i < SP_PW_MAX; i++)
{
for (int j = 0; j < CHARSIZ; j++)
{
markov_table_buf_by_key[i][j] = markov_table_ptr;
markov_table_ptr += CHARSIZ;
}
}
/**
* Convert hcstat to tables
*/
for (int i = 0; i < SP_ROOT_CNT; i++)
{
u32 key = i % CHARSIZ;
root_table_buf[i].key = key;
root_table_buf[i].val = root_stats_buf[i];
}
for (int i = 0; i < SP_MARKOV_CNT; i++)
{
u32 key = i % CHARSIZ;
markov_table_buf[i].key = key;
markov_table_buf[i].val = markov_stats_buf[i];
}
hcfree (root_stats_buf);
hcfree (markov_stats_buf);
/**
* Finally sort them
*/
for (int i = 0; i < SP_PW_MAX; i++)
{
qsort (root_table_buf_by_pos[i], CHARSIZ, sizeof (hcstat_table_t), sp_comp_val);
}
for (int i = 0; i < SP_PW_MAX; i++)
{
for (int j = 0; j < CHARSIZ; j++)
{
qsort (markov_table_buf_by_key[i][j], CHARSIZ, sizeof (hcstat_table_t), sp_comp_val);
}
}
return 0;
}
static int sp_get_sum (u32 start, u32 stop, cs_t *root_css_buf, u64 *result)
{
u64 sum = 1;
u32 i;
for (i = start; i < stop; i++)
{
if (overflow_check_u64_mul (sum, root_css_buf[i].cs_len) == false) return -1;
sum *= root_css_buf[i].cs_len;
}
*result = sum;
return 0;
}
static void sp_tbl_to_css (hcstat_table_t *root_table_buf, hcstat_table_t *markov_table_buf, cs_t *root_css_buf, cs_t *markov_css_buf, u32 threshold, u32 uniq_tbls[SP_PW_MAX][CHARSIZ])
{
memset (root_css_buf, 0, SP_PW_MAX * sizeof (cs_t));
memset (markov_css_buf, 0, SP_PW_MAX * CHARSIZ * sizeof (cs_t));
/**
* Convert tables to css
*/
for (u32 i = 0; i < SP_ROOT_CNT; i++)
{
u32 pw_pos = i / CHARSIZ;
cs_t *cs = &root_css_buf[pw_pos];
if (cs->cs_len == threshold) continue;
u32 key = root_table_buf[i].key;
if (uniq_tbls[pw_pos][key] == 0) continue;
cs->cs_buf[cs->cs_len] = key;
cs->cs_len++;
}
/**
* Convert table to css
*/
for (u32 i = 0; i < SP_MARKOV_CNT; i++)
{
u32 c = i / CHARSIZ;
cs_t *cs = &markov_css_buf[c];
if (cs->cs_len == threshold) continue;
u32 pw_pos = c / CHARSIZ;
u32 key = markov_table_buf[i].key;
if ((pw_pos + 1) < SP_PW_MAX) if (uniq_tbls[pw_pos + 1][key] == 0) continue;
cs->cs_buf[cs->cs_len] = key;
cs->cs_len++;
}
/*
for (u32 i = 0; i < 8; i++)
{
for (u32 j = 0x20; j < 0x80; j++)
{
cs_t *ptr = &markov_css_buf[(i * CHARSIZ) + j];
printf ("pos:%u key:%u len:%u" EOL, i, j, ptr->cs_len);
for (u32 k = 0; k < 10; k++)
{
printf (" %u" EOL, ptr->cs_buf[k]);
}
}
}
*/
}
void sp_exec (u64 ctx, char *pw_buf, cs_t *root_css_buf, cs_t *markov_css_buf, u32 start, u32 stop)
{
u64 v = ctx;
cs_t *cs = &root_css_buf[start];
u32 i;
for (i = start; i < stop; i++)
{
const u64 m = v % cs->cs_len;
const u64 d = v / cs->cs_len;
v = d;
const u32 k = cs->cs_buf[m];
pw_buf[i - start] = (char) k;
cs = &markov_css_buf[(i * CHARSIZ) + k];
}
}
static int mask_append_final (hashcat_ctx_t *hashcat_ctx, const char *mask)
{
mask_ctx_t *mask_ctx = hashcat_ctx->mask_ctx;
if (mask_ctx->masks_avail == mask_ctx->masks_cnt)
{
mask_ctx->masks = (char **) hcrealloc (mask_ctx->masks, mask_ctx->masks_avail * sizeof (char *), INCR_MASKS * sizeof (char *));
mask_ctx->masks_avail += INCR_MASKS;
}
mask_ctx->masks[mask_ctx->masks_cnt] = hcstrdup (mask);
mask_ctx->masks_cnt++;
return 0;
}
static int mask_append (hashcat_ctx_t *hashcat_ctx, const char *mask, const char *prepend)
{
hashconfig_t *hashconfig = hashcat_ctx->hashconfig;
user_options_t *user_options = hashcat_ctx->user_options;
if (user_options->increment == true)
{
const u32 mask_length = mp_get_length (mask, hashconfig->opts_type);
u32 increment_min = user_options->increment_min;
u32 increment_max = user_options->increment_max;
increment_max = MIN (increment_max, mask_length);
if (user_options->attack_mode == ATTACK_MODE_BF)
{
const u32 pw_min = hashconfig->pw_min;
const u32 pw_max = hashconfig->pw_max;
increment_min = MAX (increment_min, pw_min);
increment_max = MIN (increment_max, pw_max);
}
for (u32 increment_len = increment_min; increment_len <= increment_max; increment_len++)
{
char *mask_truncated = (char *) hcmalloc (256);
char *mask_truncated_next = mask_truncated;
if (prepend)
{
// this happens with maskfiles only
mask_truncated_next += snprintf (mask_truncated, 256, "%s,", prepend);
}
if (mp_get_truncated_mask (hashcat_ctx, mask, strlen (mask), increment_len, mask_truncated_next) == -1)
{
hcfree (mask_truncated);
break;
}
const int rc = mask_append_final (hashcat_ctx, mask_truncated);
hcfree (mask_truncated);
if (rc == -1) return -1;
}
}
else
{
if (prepend)
{
// this happens with maskfiles only
char *prepend_mask = NULL;
hc_asprintf (&prepend_mask, "%s,%s", prepend, mask);
const int rc = mask_append_final (hashcat_ctx, prepend_mask);
hcfree (prepend_mask);
if (rc == -1) return -1;
}
else
{
if (mask_append_final (hashcat_ctx, mask) == -1) return -1;
}
}
return 0;
}
u32 mp_get_length (const char *mask, const u32 opts_type)
{
bool ignore_next = false;
u32 len = 0;
const size_t mask_len = strlen (mask);
for (size_t i = 0; i < mask_len; i++)
{
if (ignore_next == true)
{
ignore_next = false;
}
else
{
if (mask[i] == '?')
{
ignore_next = true;
}
if (opts_type & OPTS_TYPE_MT_HEX)
{
ignore_next = true;
}
len++;
}
}
return len;
}
static char *mask_ctx_parse_maskfile_find_mask (char *line_buf, const size_t line_len)
{
char *mask_buf = line_buf;
bool escaped = false;
for (size_t i = 0; i < line_len; i++)
{
if (escaped == true)
{
escaped = false;
}
else
{
if (line_buf[i] == '\\')
{
escaped = true;
}
else if (line_buf[i] == ',')
{
mask_buf = line_buf + i + 1;
}
}
}
return mask_buf;
}
int mask_ctx_update_loop (hashcat_ctx_t *hashcat_ctx)
{
combinator_ctx_t *combinator_ctx = hashcat_ctx->combinator_ctx;
hashconfig_t *hashconfig = hashcat_ctx->hashconfig;
hashes_t *hashes = hashcat_ctx->hashes;
logfile_ctx_t *logfile_ctx = hashcat_ctx->logfile_ctx;
mask_ctx_t *mask_ctx = hashcat_ctx->mask_ctx;
status_ctx_t *status_ctx = hashcat_ctx->status_ctx;
user_options_extra_t *user_options_extra = hashcat_ctx->user_options_extra;
user_options_t *user_options = hashcat_ctx->user_options;
if (user_options_extra->attack_kern == ATTACK_KERN_COMBI)
{
if (user_options->attack_mode == ATTACK_MODE_COMBI)
{
}
else if ((user_options->attack_mode == ATTACK_MODE_HYBRID1) || (user_options->attack_mode == ATTACK_MODE_HYBRID2))
{
if (((hashconfig->opti_type & OPTI_TYPE_OPTIMIZED_KERNEL) == 0) && (user_options->attack_mode == ATTACK_MODE_HYBRID2))
{
mask_ctx->mask = mask_ctx->masks[mask_ctx->masks_pos];
if (mask_ctx_parse_maskfile (hashcat_ctx) == -1) return -1;
if (mp_gen_css (hashcat_ctx, mask_ctx->mask, strlen (mask_ctx->mask), mask_ctx->mp_sys, mask_ctx->mp_usr, mask_ctx->css_buf, &mask_ctx->css_cnt) == -1) return -1;
u32 uniq_tbls[SP_PW_MAX][CHARSIZ] = { { 0 } };
mp_css_to_uniq_tbl (hashcat_ctx, mask_ctx->css_cnt, mask_ctx->css_buf, uniq_tbls);
sp_tbl_to_css (mask_ctx->root_table_buf, mask_ctx->markov_table_buf, mask_ctx->root_css_buf, mask_ctx->markov_css_buf, user_options->markov_threshold, uniq_tbls);
if (sp_get_sum (0, mask_ctx->css_cnt, mask_ctx->root_css_buf, &mask_ctx->bfs_cnt) == -1)
{
event_log_error (hashcat_ctx, "Integer overflow detected in keyspace of mask: %s", mask_ctx->mask);
return -1;
}
if (backend_session_update_mp (hashcat_ctx) == -1) return -1;
}
else
{
mask_ctx->mask = mask_ctx->masks[mask_ctx->masks_pos];
if (mask_ctx_parse_maskfile (hashcat_ctx) == -1) return -1;
if (mp_gen_css (hashcat_ctx, mask_ctx->mask, strlen (mask_ctx->mask), mask_ctx->mp_sys, mask_ctx->mp_usr, mask_ctx->css_buf, &mask_ctx->css_cnt) == -1) return -1;
u32 uniq_tbls[SP_PW_MAX][CHARSIZ] = { { 0 } };
mp_css_to_uniq_tbl (hashcat_ctx, mask_ctx->css_cnt, mask_ctx->css_buf, uniq_tbls);
sp_tbl_to_css (mask_ctx->root_table_buf, mask_ctx->markov_table_buf, mask_ctx->root_css_buf, mask_ctx->markov_css_buf, user_options->markov_threshold, uniq_tbls);
if (sp_get_sum (0, mask_ctx->css_cnt, mask_ctx->root_css_buf, &combinator_ctx->combs_cnt) == -1)
{
event_log_error (hashcat_ctx, "Integer overflow detected in keyspace of mask: %s", mask_ctx->mask);
return -1;
}
// do not allow modifier count > 32 bit
// https://github.com/hashcat/hashcat/issues/2482
if (combinator_ctx->combs_cnt > 0xffffffff)
{
event_log_error (hashcat_ctx, "Integer overflow detected in keyspace of mask: %s", mask_ctx->mask);
return -1;
}
if (backend_session_update_mp (hashcat_ctx) == -1) return -1;
}
}
if (backend_session_update_combinator (hashcat_ctx) == -1) return -1;
}
else if (user_options_extra->attack_kern == ATTACK_KERN_BF)
{
mask_ctx->mask = mask_ctx->masks[mask_ctx->masks_pos];
if (mask_ctx_parse_maskfile (hashcat_ctx) == -1) return -1;
if (user_options->attack_mode == ATTACK_MODE_BF) // always true
{
if (mp_gen_css (hashcat_ctx, mask_ctx->mask, strlen (mask_ctx->mask), mask_ctx->mp_sys, mask_ctx->mp_usr, mask_ctx->css_buf, &mask_ctx->css_cnt) == -1) return -1;
// special case for benchmark
u32 pw_min = hashconfig->pw_min;
u32 pw_max = hashconfig->pw_max;
if (user_options->benchmark == true)
{
pw_min = mp_get_length (mask_ctx->mask, hashconfig->opts_type);
pw_max = pw_min;
}
hashconfig->pw_min = pw_min;
hashconfig->pw_max = pw_max;
// check if mask is not too large or too small for pw_min/pw_max
u32 mask_min = hashconfig->pw_min;
u32 mask_max = hashconfig->pw_max;
if ((mask_ctx->css_cnt < mask_min) || (mask_ctx->css_cnt > mask_max))
{
if (mask_ctx->css_cnt < mask_min)
{
event_log_warning (hashcat_ctx, "Skipping mask '%s' because it is smaller than the minimum password length.", mask_ctx->mask);
event_log_warning (hashcat_ctx, NULL);
}
if (mask_ctx->css_cnt > mask_max)
{
event_log_warning (hashcat_ctx, "Skipping mask '%s' because it is larger than the maximum password length.", mask_ctx->mask);
event_log_warning (hashcat_ctx, NULL);
}
// skip to next mask
logfile_sub_msg ("STOP");
return -1;
}
if (user_options->slow_candidates == false)
{
if (hashconfig->opts_type & OPTS_TYPE_PT_UTF16LE)
{
if (mp_css_utf16le_expand (hashcat_ctx) == -1) return -1;
}
else if (hashconfig->opts_type & OPTS_TYPE_PT_UTF16BE)
{
if (mp_css_utf16be_expand (hashcat_ctx) == -1) return -1;
}
}
u32 css_cnt_orig = mask_ctx->css_cnt;
if (hashconfig->opti_type & OPTI_TYPE_SINGLE_HASH)
{
if (hashconfig->opti_type & OPTI_TYPE_APPENDED_SALT)
{
if (mp_css_append_salt (hashcat_ctx, &hashes->salts_buf[0]) == -1) return -1;
}
}
u32 uniq_tbls[SP_PW_MAX][CHARSIZ] = { { 0 } };
mp_css_to_uniq_tbl (hashcat_ctx, mask_ctx->css_cnt, mask_ctx->css_buf, uniq_tbls);
sp_tbl_to_css (mask_ctx->root_table_buf, mask_ctx->markov_table_buf, mask_ctx->root_css_buf, mask_ctx->markov_css_buf, user_options->markov_threshold, uniq_tbls);
if (sp_get_sum (0, mask_ctx->css_cnt, mask_ctx->root_css_buf, &status_ctx->words_cnt) == -1)
{
event_log_error (hashcat_ctx, "Integer overflow detected in keyspace of mask: %s", mask_ctx->mask);
return -1;
}
// copy + args
u32 css_cnt_lr[2];
mp_css_split_cnt (hashcat_ctx, css_cnt_orig, css_cnt_lr);
if (sp_get_sum (0, css_cnt_lr[1], mask_ctx->root_css_buf, &mask_ctx->bfs_cnt) == -1)
{
event_log_error (hashcat_ctx, "Integer overflow detected in keyspace of mask: %s", mask_ctx->mask);
return -1;
}
if (backend_session_update_mp_rl (hashcat_ctx, css_cnt_lr[0], css_cnt_lr[1]) == -1) return -1;
}
}
return 0;
}
int mask_ctx_init (hashcat_ctx_t *hashcat_ctx)
{
const hashconfig_t *hashconfig = hashcat_ctx->hashconfig;
const user_options_extra_t *user_options_extra = hashcat_ctx->user_options_extra;
const user_options_t *user_options = hashcat_ctx->user_options;
mask_ctx_t *mask_ctx = hashcat_ctx->mask_ctx;
mask_ctx->enabled = false;
if (user_options->hash_info == true) return 0;
if (user_options->left == true) return 0;
if (user_options->show == true) return 0;
if (user_options->usage == true) return 0;
if (user_options->version == true) return 0;
if (user_options->backend_info > 0) return 0;
if (user_options->attack_mode == ATTACK_MODE_ASSOCIATION) return 0;
if (user_options->attack_mode == ATTACK_MODE_STRAIGHT) return 0;
if (user_options->attack_mode == ATTACK_MODE_COMBI) return 0;
mask_ctx->enabled = true;
mask_ctx->mp_sys = (cs_t *) hccalloc (8, sizeof (cs_t));
mask_ctx->mp_usr = (cs_t *) hccalloc (4, sizeof (cs_t));
mask_ctx->css_buf = (cs_t *) hccalloc (256, sizeof (cs_t));
mask_ctx->css_cnt = 0;
mask_ctx->root_table_buf = (hcstat_table_t *) hccalloc (SP_ROOT_CNT, sizeof (hcstat_table_t));
mask_ctx->markov_table_buf = (hcstat_table_t *) hccalloc (SP_MARKOV_CNT, sizeof (hcstat_table_t));
if (sp_setup_tbl (hashcat_ctx) == -1) return -1;
mask_ctx->root_css_buf = (cs_t *) hccalloc (SP_PW_MAX, sizeof (cs_t));
mask_ctx->markov_css_buf = (cs_t *) hccalloc (SP_PW_MAX * CHARSIZ, sizeof (cs_t));
mask_ctx->mask_from_file = false;
mask_ctx->masks = NULL;
mask_ctx->masks_pos = 0;
mask_ctx->masks_cnt = 0;
mask_ctx->mfs = (mf_t *) hccalloc (MAX_MFS, sizeof (mf_t));
mp_setup_sys (mask_ctx->mp_sys);
if (user_options->custom_charset_1) { if (mp_setup_usr (hashcat_ctx, mask_ctx->mp_sys, mask_ctx->mp_usr, user_options->custom_charset_1, 0) == -1) return -1; }
if (user_options->custom_charset_2) { if (mp_setup_usr (hashcat_ctx, mask_ctx->mp_sys, mask_ctx->mp_usr, user_options->custom_charset_2, 1) == -1) return -1; }
if (user_options->custom_charset_3) { if (mp_setup_usr (hashcat_ctx, mask_ctx->mp_sys, mask_ctx->mp_usr, user_options->custom_charset_3, 2) == -1) return -1; }
if (user_options->custom_charset_4) { if (mp_setup_usr (hashcat_ctx, mask_ctx->mp_sys, mask_ctx->mp_usr, user_options->custom_charset_4, 3) == -1) return -1; }
if (user_options->benchmark == true)
{
if (hashconfig->benchmark_charset != NULL)
{
if (mp_setup_usr (hashcat_ctx, mask_ctx->mp_sys, mask_ctx->mp_usr, hashconfig->benchmark_charset, 0) == -1) return -1;
}
}
if (user_options->attack_mode == ATTACK_MODE_BF)
{
if (user_options->benchmark == false)
{
if (user_options_extra->hc_workc)
{
char *arg = user_options_extra->hc_workv[0];
if (hc_path_exist (arg) == false)
{
if (mask_append (hashcat_ctx, arg, NULL) == -1) return -1;
}
else
{
mask_ctx->mask_from_file = true;
for (int i = 0; i < user_options_extra->hc_workc; i++)
{
arg = user_options_extra->hc_workv[i];
if (hc_path_is_file (arg) == true)
{
HCFILE mask_fp;
if (hc_fopen (&mask_fp, arg, "r") == false)
{
event_log_error (hashcat_ctx, "%s: %s", arg, strerror (errno));
return -1;
}
char *line_buf = (char *) hcmalloc (HCBUFSIZ_LARGE);
while (!hc_feof (&mask_fp))
{
const size_t line_len = fgetl (&mask_fp, line_buf, HCBUFSIZ_LARGE);
if (line_len == 0) continue;
if (line_buf[0] == '#') continue;
char *mask_buf = mask_ctx_parse_maskfile_find_mask (line_buf, line_len);
char *prepend_buf = NULL;
if (line_buf != mask_buf)
{
// if we have custom charsets
prepend_buf = line_buf;
mask_buf[-1] = 0;
}
if (mask_append (hashcat_ctx, mask_buf, prepend_buf) == -1)
{
hc_fclose (&mask_fp);
return -1;
}
}
hcfree (line_buf);
hc_fclose (&mask_fp);
}
else
{
event_log_error (hashcat_ctx, "%s: unsupported file type.", arg);
return -1;
}
}
}
}
else
{
const char *mask = DEF_MASK;
if (mask_append (hashcat_ctx, mask, NULL) == -1) return -1;
}
}
else
{
const char *mask = hashconfig->benchmark_mask;
if (mask_append (hashcat_ctx, mask, NULL) == -1) return -1;
}
}
else if (user_options->attack_mode == ATTACK_MODE_HYBRID1)
{
// display
char *arg = user_options_extra->hc_workv[user_options_extra->hc_workc - 1];
// mod
if (hc_path_exist (arg) == false)
{
if (mask_append (hashcat_ctx, arg, NULL) == -1) return -1;
}
else
{
if (hc_path_is_file (arg) == true)
{
mask_ctx->mask_from_file = true;
HCFILE mask_fp;
if (hc_fopen (&mask_fp, arg, "r") == false)
{
event_log_error (hashcat_ctx, "%s: %s", arg, strerror (errno));
return -1;
}
char *line_buf = (char *) hcmalloc (HCBUFSIZ_LARGE);
while (!hc_feof (&mask_fp))
{
const size_t line_len = fgetl (&mask_fp, line_buf, HCBUFSIZ_LARGE);
if (line_len == 0) continue;
if (line_buf[0] == '#') continue;
char *mask_buf = mask_ctx_parse_maskfile_find_mask (line_buf, line_len);
char *prepend_buf = NULL;
if (line_buf != mask_buf)
{
// if we have custom charsets
prepend_buf = line_buf;
mask_buf[-1] = 0;
}
if (mask_append (hashcat_ctx, mask_buf, prepend_buf) == -1)
{
hc_fclose (&mask_fp);
return -1;
}
}
hcfree (line_buf);
hc_fclose (&mask_fp);
}
else
{
event_log_error (hashcat_ctx, "%s: unsupported file type.", arg);
return -1;
}
}
}
else if (user_options->attack_mode == ATTACK_MODE_HYBRID2)
{
// display
char *arg = user_options_extra->hc_workv[0];
// mod
if (hc_path_exist (arg) == false)
{
if (mask_append (hashcat_ctx, arg, NULL) == -1) return -1;
}
else
{
if (hc_path_is_file (arg) == true)
{
mask_ctx->mask_from_file = true;
HCFILE mask_fp;
if (hc_fopen (&mask_fp, arg, "r") == false)
{
event_log_error (hashcat_ctx, "%s: %s", arg, strerror (errno));
return -1;
}
char *line_buf = (char *) hcmalloc (HCBUFSIZ_LARGE);
while (!hc_feof (&mask_fp))
{
const size_t line_len = fgetl (&mask_fp, line_buf, HCBUFSIZ_LARGE);
if (line_len == 0) continue;
if (line_buf[0] == '#') continue;
char *mask_buf = mask_ctx_parse_maskfile_find_mask (line_buf, line_len);
char *prepend_buf = NULL;
if (line_buf != mask_buf)
{
// if we have custom charsets
prepend_buf = line_buf;
mask_buf[-1] = 0;
}
if (mask_append (hashcat_ctx, mask_buf, prepend_buf) == -1)
{
hc_fclose (&mask_fp);
return -1;
}
}
hcfree (line_buf);
hc_fclose (&mask_fp);
}
else
{
event_log_error (hashcat_ctx, "%s: unsupported file type.", arg);
return -1;
}
}
}
if (mask_ctx->masks_cnt == 0)
{
event_log_error (hashcat_ctx, "Invalid mask.");
return -1;
}
mask_ctx->mask = mask_ctx->masks[0];
return 0;
}
void mask_ctx_destroy (hashcat_ctx_t *hashcat_ctx)
{
mask_ctx_t *mask_ctx = hashcat_ctx->mask_ctx;
if (mask_ctx->enabled == false) return;
hcfree (mask_ctx->mp_sys);
hcfree (mask_ctx->mp_usr);
hcfree (mask_ctx->css_buf);
hcfree (mask_ctx->root_css_buf);
hcfree (mask_ctx->markov_css_buf);
hcfree (mask_ctx->root_table_buf);
hcfree (mask_ctx->markov_table_buf);
for (u32 mask_pos = 0; mask_pos < mask_ctx->masks_cnt; mask_pos++)
{
hcfree (mask_ctx->masks[mask_pos]);
}
hcfree (mask_ctx->masks);
hcfree (mask_ctx->mfs);
memset (mask_ctx, 0, sizeof (mask_ctx_t));
}
int mask_ctx_parse_maskfile (hashcat_ctx_t *hashcat_ctx)
{
mask_ctx_t *mask_ctx = hashcat_ctx->mask_ctx;
user_options_t *user_options = hashcat_ctx->user_options;
if (mask_ctx->enabled == false) return 0;
if (mask_ctx->mask_from_file == false) return 0;
mf_t *mfs_buf = mask_ctx->mfs;
mfs_buf[0].mf_len = 0;
mfs_buf[1].mf_len = 0;
mfs_buf[2].mf_len = 0;
mfs_buf[3].mf_len = 0;
mfs_buf[4].mf_len = 0;
size_t mfs_cnt = 0;
char *mask_buf = mask_ctx->mask;
const size_t mask_len = strlen (mask_buf);
bool escaped = false;
for (size_t i = 0; i < mask_len; i++)
{
mf_t *mf = mfs_buf + mfs_cnt;
if (escaped == true)
{
escaped = false;
mf->mf_buf[mf->mf_len] = mask_buf[i];
mf->mf_len++;
}
else
{
if (mask_buf[i] == '\\')
{
escaped = true;
}
else if (mask_buf[i] == ',')
{
mf->mf_buf[mf->mf_len] = 0;
mfs_cnt++;
if (mfs_cnt == MAX_MFS)
{
event_log_error (hashcat_ctx, "Invalid line '%s' in maskfile.", mask_buf);
return -1;
}
}
else
{
mf->mf_buf[mf->mf_len] = mask_buf[i];
mf->mf_len++;
}
}
}
mf_t *mf = mfs_buf + mfs_cnt;
mf->mf_buf[mf->mf_len] = 0;
user_options->custom_charset_1 = NULL;
user_options->custom_charset_2 = NULL;
user_options->custom_charset_3 = NULL;
user_options->custom_charset_4 = NULL;
mp_reset_usr (mask_ctx->mp_usr, 0);
mp_reset_usr (mask_ctx->mp_usr, 1);
mp_reset_usr (mask_ctx->mp_usr, 2);
mp_reset_usr (mask_ctx->mp_usr, 3);
for (size_t i = 0; i < mfs_cnt; i++)
{
switch (i)
{
case 0:
user_options->custom_charset_1 = mfs_buf[0].mf_buf;
mp_setup_usr (hashcat_ctx, mask_ctx->mp_sys, mask_ctx->mp_usr, user_options->custom_charset_1, 0);
break;
case 1:
user_options->custom_charset_2 = mfs_buf[1].mf_buf;
mp_setup_usr (hashcat_ctx, mask_ctx->mp_sys, mask_ctx->mp_usr, user_options->custom_charset_2, 1);
break;
case 2:
user_options->custom_charset_3 = mfs_buf[2].mf_buf;
mp_setup_usr (hashcat_ctx, mask_ctx->mp_sys, mask_ctx->mp_usr, user_options->custom_charset_3, 2);
break;
case 3:
user_options->custom_charset_4 = mfs_buf[3].mf_buf;
mp_setup_usr (hashcat_ctx, mask_ctx->mp_sys, mask_ctx->mp_usr, user_options->custom_charset_4, 3);
break;
}
}
mask_ctx->mask = mfs_buf[mfs_cnt].mf_buf;
return 0;
}
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