/** * Author......: See docs/credits.txt * License.....: MIT */ #include "common.h" #include "types.h" #include "convert.h" #include "memory.h" #include "logging.h" #include "interface.h" #include "filehandling.h" #include "outfile.h" #include "potfile.h" // get rid of this later int sort_by_hash (const void *v1, const void *v2); int sort_by_hash_no_salt (const void *v1, const void *v2); // get rid of this later int sort_by_pot (const void *v1, const void *v2) { const pot_t *p1 = (const pot_t *) v1; const pot_t *p2 = (const pot_t *) v2; const hash_t *h1 = &p1->hash; const hash_t *h2 = &p2->hash; return sort_by_hash (h1, h2); } int sort_by_salt_buf (const void *v1, const void *v2) { const pot_t *p1 = (const pot_t *) v1; const pot_t *p2 = (const pot_t *) v2; const hash_t *h1 = &p1->hash; const hash_t *h2 = &p2->hash; const salt_t *s1 = h1->salt; const salt_t *s2 = h2->salt; uint n = 16; while (n--) { if (s1->salt_buf[n] > s2->salt_buf[n]) return ( 1); if (s1->salt_buf[n] < s2->salt_buf[n]) return -1; } return 0; } int sort_by_hash_t_salt (const void *v1, const void *v2) { const hash_t *h1 = (const hash_t *) v1; const hash_t *h2 = (const hash_t *) v2; const salt_t *s1 = h1->salt; const salt_t *s2 = h2->salt; // testphase: this should work uint n = 16; while (n--) { if (s1->salt_buf[n] > s2->salt_buf[n]) return ( 1); if (s1->salt_buf[n] < s2->salt_buf[n]) return -1; } /* original code, seems buggy since salt_len can be very big (had a case with 131 len) also it thinks salt_buf[x] is a char but its a uint so salt_len should be / 4 if (s1->salt_len > s2->salt_len) return ( 1); if (s1->salt_len < s2->salt_len) return -1; uint n = s1->salt_len; while (n--) { if (s1->salt_buf[n] > s2->salt_buf[n]) return ( 1); if (s1->salt_buf[n] < s2->salt_buf[n]) return -1; } */ return 0; } int sort_by_hash_t_salt_hccap (const void *v1, const void *v2) { const hash_t *h1 = (const hash_t *) v1; const hash_t *h2 = (const hash_t *) v2; const salt_t *s1 = h1->salt; const salt_t *s2 = h2->salt; // last 2: salt_buf[10] and salt_buf[11] contain the digest (skip them) uint n = 9; // 9 * 4 = 36 bytes (max length of ESSID) while (n--) { if (s1->salt_buf[n] > s2->salt_buf[n]) return ( 1); if (s1->salt_buf[n] < s2->salt_buf[n]) return -1; } return 0; } void potfile_init (potfile_ctx_t *potfile_ctx, const char *profile_dir, const char *potfile_path, const uint potfile_disable) { potfile_ctx->disable = potfile_disable; if (potfile_ctx->disable == 1) return; potfile_ctx->fp = NULL; potfile_ctx->filename = (char *) mymalloc (HCBUFSIZ_TINY); if (potfile_path == NULL) { snprintf (potfile_ctx->filename, HCBUFSIZ_TINY - 1, "%s/hashcat.potfile", profile_dir); } else { strncpy (potfile_ctx->filename, potfile_path, HCBUFSIZ_TINY - 1); } potfile_ctx->pot = NULL; potfile_ctx->pot_cnt = 0; potfile_ctx->pot_avail = 0; potfile_ctx->pot_hashes_avail = 0; } void potfile_format_plain (potfile_ctx_t *potfile_ctx, const unsigned char *plain_ptr, const uint plain_len) { if (potfile_ctx->disable == 1) return; int needs_hexify = 0; for (uint i = 0; i < plain_len; i++) { if (plain_ptr[i] < 0x20) { needs_hexify = 1; break; } if (plain_ptr[i] > 0x7f) { needs_hexify = 1; break; } } if (needs_hexify == 1) { fprintf (potfile_ctx->fp, "$HEX["); for (uint i = 0; i < plain_len; i++) { fprintf (potfile_ctx->fp, "%02x", plain_ptr[i]); } fprintf (potfile_ctx->fp, "]"); } else { fwrite (plain_ptr, plain_len, 1, potfile_ctx->fp); } } int potfile_read_open (potfile_ctx_t *potfile_ctx) { if (potfile_ctx->disable == 1) return 0; potfile_ctx->fp = fopen (potfile_ctx->filename, "rb"); if (potfile_ctx->fp == NULL) { //log_error ("ERROR: %s: %s", potfile_ctx->filename, strerror (errno)); return -1; } return 0; } void potfile_read_parse (potfile_ctx_t *potfile_ctx, const hashconfig_t *hashconfig) { if (potfile_ctx->disable == 1) return; if (potfile_ctx->fp == NULL) return; potfile_ctx->pot_avail = count_lines (potfile_ctx->fp); potfile_ctx->pot = (pot_t *) mycalloc (potfile_ctx->pot_avail, sizeof (pot_t)); rewind (potfile_ctx->fp); char *line_buf = (char *) mymalloc (HCBUFSIZ_LARGE); for (uint line_num = 0; line_num < potfile_ctx->pot_avail; line_num++) { int line_len = fgetl (potfile_ctx->fp, line_buf); if (line_len == 0) continue; pot_t *pot_ptr = &potfile_ctx->pot[potfile_ctx->pot_cnt]; // we do not initialize all hashes_buf->digest etc at the beginning, since many lines may not be // valid lines of this specific hash type (otherwise it would be more waste of memory than gain) if (potfile_ctx->pot_cnt == potfile_ctx->pot_hashes_avail) { potfile_hash_alloc (potfile_ctx, hashconfig, INCR_POT); } int parser_status; int iter = MAX_CUT_TRIES; hash_t *hashes_buf = &pot_ptr->hash; char *plain_buf = line_buf + line_len; int plain_len = 0; do { for (int i = line_len - 1; i; i--, plain_len++, plain_buf--, line_len--) { if (line_buf[i] == ':') { line_len--; break; } } if (hashconfig->hash_mode != 2500) { parser_status = hashconfig->parse_func (line_buf, line_len, hashes_buf, hashconfig); } else { int max_salt_size = sizeof (hashes_buf->salt->salt_buf); if (line_len > max_salt_size) { parser_status = PARSER_GLOBAL_LENGTH; } else { memset (&hashes_buf->salt->salt_buf, 0, max_salt_size); memcpy (&hashes_buf->salt->salt_buf, line_buf, line_len); hashes_buf->salt->salt_len = line_len; parser_status = PARSER_OK; } } // if NOT parsed without error, we add the ":" to the plain if (parser_status == PARSER_GLOBAL_LENGTH || parser_status == PARSER_HASH_LENGTH || parser_status == PARSER_SALT_LENGTH) { plain_len++; plain_buf--; } } while ((parser_status == PARSER_GLOBAL_LENGTH || parser_status == PARSER_HASH_LENGTH || parser_status == PARSER_SALT_LENGTH) && --iter); if (parser_status < PARSER_GLOBAL_ZERO) { // log_info ("WARNING: Potfile '%s' in line %u (%s): %s", potfile, line_num, line_buf, strparser (parser_status)); continue; } if (plain_len >= HCBUFSIZ_TINY) continue; memcpy (pot_ptr->plain_buf, plain_buf, plain_len); pot_ptr->plain_len = plain_len; potfile_ctx->pot_cnt++; } myfree (line_buf); qsort (potfile_ctx->pot, potfile_ctx->pot_cnt, sizeof (pot_t), sort_by_pot); } void potfile_read_close (potfile_ctx_t *potfile_ctx) { if (potfile_ctx->disable == 1) return; if (potfile_ctx->fp == NULL) return; fclose (potfile_ctx->fp); } int potfile_write_open (potfile_ctx_t *potfile_ctx) { if (potfile_ctx->disable == 1) return 0; potfile_ctx->fp = fopen (potfile_ctx->filename, "ab"); if (potfile_ctx->fp == NULL) { log_error ("ERROR: %s: %s", potfile_ctx->filename, strerror (errno)); return -1; } return 0; } void potfile_write_close (potfile_ctx_t *potfile_ctx) { if (potfile_ctx->disable == 1) return; fclose (potfile_ctx->fp); } void potfile_write_append (potfile_ctx_t *potfile_ctx, const char *out_buf, u8 *plain_ptr, unsigned int plain_len) { if (potfile_ctx->disable == 1) return; FILE *fp = potfile_ctx->fp; fprintf (fp, "%s:", out_buf); potfile_format_plain (potfile_ctx, plain_ptr, plain_len); fputc ('\n', fp); fflush (fp); } void potfile_hash_alloc (potfile_ctx_t *potfile_ctx, const hashconfig_t *hashconfig, const uint num) { if (potfile_ctx->disable == 1) return; uint pos = 0; for (pos = 0; pos < num; pos++) { if ((potfile_ctx->pot_cnt + pos) >= potfile_ctx->pot_avail) break; pot_t *tmp_pot = &potfile_ctx->pot[potfile_ctx->pot_cnt + pos]; hash_t *tmp_hash = &tmp_pot->hash; tmp_hash->digest = mymalloc (hashconfig->dgst_size); if (hashconfig->is_salted) { tmp_hash->salt = (salt_t *) mymalloc (sizeof (salt_t)); } if (hashconfig->esalt_size) { tmp_hash->esalt = mymalloc (hashconfig->esalt_size); } potfile_ctx->pot_hashes_avail++; } } void potfile_hash_free (potfile_ctx_t *potfile_ctx, const hashconfig_t *hashconfig) { if (potfile_ctx->disable == 1) return; for (uint i = 0; i < potfile_ctx->pot_cnt; i++) { pot_t *pot_ptr = &potfile_ctx->pot[i]; hash_t *hashes_buf = &pot_ptr->hash; myfree (hashes_buf->digest); if (hashconfig->is_salted) { myfree (hashes_buf->salt); } if (hashconfig->esalt_size) { myfree (hashes_buf->esalt); } } } void potfile_show_request (potfile_ctx_t *potfile_ctx, const hashconfig_t *hashconfig, outfile_ctx_t *outfile_ctx, char *input_buf, int input_len, hash_t *hashes_buf, int (*sort_by_pot) (const void *, const void *)) { if (potfile_ctx->disable == 1) return; pot_t pot_key; pot_key.hash.salt = hashes_buf->salt; pot_key.hash.digest = hashes_buf->digest; pot_t *pot_ptr = (pot_t *) bsearch (&pot_key, potfile_ctx->pot, potfile_ctx->pot_cnt, sizeof (pot_t), sort_by_pot); if (pot_ptr) { log_info_nn (""); input_buf[input_len] = 0; // user unsigned char *username = NULL; uint user_len = 0; if (hashes_buf->hash_info) { user_t *user = hashes_buf->hash_info->user; if (user) { username = (unsigned char *) (user->user_name); user_len = user->user_len; } } // do output the line outfile_write (outfile_ctx, input_buf, (const unsigned char *) pot_ptr->plain_buf, pot_ptr->plain_len, 0, username, user_len, hashconfig); } } void potfile_left_request (potfile_ctx_t *potfile_ctx, const hashconfig_t *hashconfig, outfile_ctx_t *outfile_ctx, char *input_buf, int input_len, hash_t *hashes_buf, int (*sort_by_pot) (const void *, const void *)) { if (potfile_ctx->disable == 1) return; pot_t pot_key; memcpy (&pot_key.hash, hashes_buf, sizeof (hash_t)); pot_t *pot_ptr = (pot_t *) bsearch (&pot_key, potfile_ctx->pot, potfile_ctx->pot_cnt, sizeof (pot_t), sort_by_pot); if (pot_ptr == NULL) { log_info_nn (""); input_buf[input_len] = 0; outfile_write (outfile_ctx, input_buf, NULL, 0, 0, NULL, 0, hashconfig); } } void potfile_show_request_lm (potfile_ctx_t *potfile_ctx, const hashconfig_t *hashconfig, outfile_ctx_t *outfile_ctx, char *input_buf, int input_len, hash_t *hash_left, hash_t *hash_right, int (*sort_by_pot) (const void *, const void *)) { if (potfile_ctx->disable == 1) return; // left pot_t pot_left_key; pot_left_key.hash.salt = hash_left->salt; pot_left_key.hash.digest = hash_left->digest; pot_t *pot_left_ptr = (pot_t *) bsearch (&pot_left_key, potfile_ctx->pot, potfile_ctx->pot_cnt, sizeof (pot_t), sort_by_pot); // right uint weak_hash_found = 0; pot_t pot_right_key; pot_right_key.hash.salt = hash_right->salt; pot_right_key.hash.digest = hash_right->digest; pot_t *pot_right_ptr = (pot_t *) bsearch (&pot_right_key, potfile_ctx->pot, potfile_ctx->pot_cnt, sizeof (pot_t), sort_by_pot); if (pot_right_ptr == NULL) { // special case, if "weak hash" if (memcmp (hash_right->digest, LM_WEAK_HASH, 8) == 0) { weak_hash_found = 1; pot_right_ptr = (pot_t *) mycalloc (1, sizeof (pot_t)); // in theory this is not needed, but we are paranoia: memset (pot_right_ptr->plain_buf, 0, sizeof (pot_right_ptr->plain_buf)); pot_right_ptr->plain_len = 0; } } if ((pot_left_ptr == NULL) && (pot_right_ptr == NULL)) { if (weak_hash_found == 1) myfree (pot_right_ptr); // this shouldn't happen at all: if weak_hash_found == 1, than pot_right_ptr is not NULL for sure return; } // at least one half was found: log_info_nn (""); input_buf[input_len] = 0; // user unsigned char *username = NULL; uint user_len = 0; if (hash_left->hash_info) { user_t *user = hash_left->hash_info->user; if (user) { username = (unsigned char *) (user->user_name); user_len = user->user_len; } } // mask the part which was not found uint left_part_masked = 0; uint right_part_masked = 0; uint mask_plain_len = strlen (LM_MASKED_PLAIN); if (pot_left_ptr == NULL) { left_part_masked = 1; pot_left_ptr = (pot_t *) mycalloc (1, sizeof (pot_t)); memset (pot_left_ptr->plain_buf, 0, sizeof (pot_left_ptr->plain_buf)); memcpy (pot_left_ptr->plain_buf, LM_MASKED_PLAIN, mask_plain_len); pot_left_ptr->plain_len = mask_plain_len; } if (pot_right_ptr == NULL) { right_part_masked = 1; pot_right_ptr = (pot_t *) mycalloc (1, sizeof (pot_t)); memset (pot_right_ptr->plain_buf, 0, sizeof (pot_right_ptr->plain_buf)); memcpy (pot_right_ptr->plain_buf, LM_MASKED_PLAIN, mask_plain_len); pot_right_ptr->plain_len = mask_plain_len; } // create the pot_ptr out of pot_left_ptr and pot_right_ptr pot_t pot_ptr; pot_ptr.plain_len = pot_left_ptr->plain_len + pot_right_ptr->plain_len; memcpy (pot_ptr.plain_buf, pot_left_ptr->plain_buf, pot_left_ptr->plain_len); memcpy (pot_ptr.plain_buf + pot_left_ptr->plain_len, pot_right_ptr->plain_buf, pot_right_ptr->plain_len); // do output the line outfile_write (outfile_ctx, input_buf, (unsigned char *) pot_ptr.plain_buf, pot_ptr.plain_len, 0, username, user_len, hashconfig); if (weak_hash_found == 1) myfree (pot_right_ptr); if (left_part_masked == 1) myfree (pot_left_ptr); if (right_part_masked == 1) myfree (pot_right_ptr); } void potfile_left_request_lm (potfile_ctx_t *potfile_ctx, const hashconfig_t *hashconfig, outfile_ctx_t *outfile_ctx, char *input_buf, int input_len, hash_t *hash_left, hash_t *hash_right, int (*sort_by_pot) (const void *, const void *)) { if (potfile_ctx->disable == 1) return; // left pot_t pot_left_key; memcpy (&pot_left_key.hash, hash_left, sizeof (hash_t)); pot_t *pot_left_ptr = (pot_t *) bsearch (&pot_left_key, potfile_ctx->pot, potfile_ctx->pot_cnt, sizeof (pot_t), sort_by_pot); // right pot_t pot_right_key; memcpy (&pot_right_key.hash, hash_right, sizeof (hash_t)); pot_t *pot_right_ptr = (pot_t *) bsearch (&pot_right_key, potfile_ctx->pot, potfile_ctx->pot_cnt, sizeof (pot_t), sort_by_pot); uint weak_hash_found = 0; if (pot_right_ptr == NULL) { // special case, if "weak hash" if (memcmp (hash_right->digest, LM_WEAK_HASH, 8) == 0) { weak_hash_found = 1; // we just need that pot_right_ptr is not a NULL pointer pot_right_ptr = (pot_t *) mycalloc (1, sizeof (pot_t)); } } if ((pot_left_ptr != NULL) && (pot_right_ptr != NULL)) { if (weak_hash_found == 1) myfree (pot_right_ptr); return; } // ... at least one part was not cracked log_info_nn (""); input_buf[input_len] = 0; // only show the hash part which is still not cracked uint user_len = (uint)input_len - 32u; char *hash_output = (char *) mymalloc (33); memcpy (hash_output, input_buf, input_len); if (pot_left_ptr != NULL) { // only show right part (because left part was already found) memcpy (hash_output + user_len, input_buf + user_len + 16, 16); hash_output[user_len + 16] = 0; } if (pot_right_ptr != NULL) { // only show left part (because right part was already found) memcpy (hash_output + user_len, input_buf + user_len, 16); hash_output[user_len + 16] = 0; } outfile_write (outfile_ctx, hash_output, NULL, 0, 0, NULL, 0, hashconfig); myfree (hash_output); if (weak_hash_found == 1) myfree (pot_right_ptr); } int potfile_remove_parse (potfile_ctx_t *potfile_ctx, const hashconfig_t *hashconfig, const hashes_t *hashes) { if (potfile_ctx->disable == 1) return 0; hash_t *hashes_buf = hashes->hashes_buf; uint hashes_cnt = hashes->hashes_cnt; // no solution for these special hash types (for instane because they use hashfile in output etc) if (hashconfig->hash_mode == 5200) return 0; if ((hashconfig->hash_mode >= 6200) && (hashconfig->hash_mode <= 6299)) return 0; if (hashconfig->hash_mode == 9000) return 0; if ((hashconfig->hash_mode >= 13700) && (hashconfig->hash_mode <= 13799)) return 0; hash_t hash_buf; hash_buf.digest = mymalloc (hashconfig->dgst_size); hash_buf.salt = NULL; hash_buf.esalt = NULL; hash_buf.hash_info = NULL; hash_buf.cracked = 0; if (hashconfig->is_salted) { hash_buf.salt = (salt_t *) mymalloc (sizeof (salt_t)); } if (hashconfig->esalt_size) { hash_buf.esalt = mymalloc (hashconfig->esalt_size); } const int rc = potfile_read_open (potfile_ctx); if (rc == -1) return 0; int potfile_remove_cracks = 0; char *line_buf = (char *) mymalloc (HCBUFSIZ_LARGE); // to be safe work with a copy (because of line_len loop, i etc) // moved up here because it's easier to handle continue case // it's just 64kb char *line_buf_cpy = (char *) mymalloc (HCBUFSIZ_LARGE); while (!feof (potfile_ctx->fp)) { char *ptr = fgets (line_buf, HCBUFSIZ_LARGE - 1, potfile_ctx->fp); if (ptr == NULL) break; int line_len = strlen (line_buf); if (line_len == 0) continue; int iter = MAX_CUT_TRIES; for (int i = line_len - 1; i && iter; i--, line_len--) { if (line_buf[i] != ':') continue; if (hashconfig->is_salted) { memset (hash_buf.salt, 0, sizeof (salt_t)); } if (hashconfig->esalt_size) { memset (hash_buf.esalt, 0, hashconfig->esalt_size); } hash_t *found = NULL; if (hashconfig->hash_mode == 6800) { if (i < 64) // 64 = 16 * uint in salt_buf[] { // manipulate salt_buf memcpy (hash_buf.salt->salt_buf, line_buf, i); hash_buf.salt->salt_len = i; found = (hash_t *) bsearch (&hash_buf, hashes_buf, hashes_cnt, sizeof (hash_t), sort_by_hash_t_salt); } } else if (hashconfig->hash_mode == 2500) { if (i < 64) // 64 = 16 * uint in salt_buf[] { // here we have in line_buf: ESSID:MAC1:MAC2 (without the plain) // manipulate salt_buf memset (line_buf_cpy, 0, HCBUFSIZ_LARGE); memcpy (line_buf_cpy, line_buf, i); char *mac2_pos = strrchr (line_buf_cpy, ':'); if (mac2_pos == NULL) continue; mac2_pos[0] = 0; mac2_pos++; if (strlen (mac2_pos) != 12) continue; char *mac1_pos = strrchr (line_buf_cpy, ':'); if (mac1_pos == NULL) continue; mac1_pos[0] = 0; mac1_pos++; if (strlen (mac1_pos) != 12) continue; uint essid_length = mac1_pos - line_buf_cpy - 1; // here we need the ESSID memcpy (hash_buf.salt->salt_buf, line_buf_cpy, essid_length); hash_buf.salt->salt_len = essid_length; found = (hash_t *) bsearch (&hash_buf, hashes_buf, hashes_cnt, sizeof (hash_t), sort_by_hash_t_salt_hccap); if (found) { wpa_t *wpa = (wpa_t *) found->esalt; // compare hex string(s) vs binary MAC address(es) for (uint i = 0, j = 0; i < 6; i++, j += 2) { if (wpa->orig_mac1[i] != hex_to_u8 ((const u8 *) &mac1_pos[j])) { found = NULL; break; } } // early skip ;) if (!found) continue; for (uint i = 0, j = 0; i < 6; i++, j += 2) { if (wpa->orig_mac2[i] != hex_to_u8 ((const u8 *) &mac2_pos[j])) { found = NULL; break; } } } } } else { int parser_status = hashconfig->parse_func (line_buf, line_len - 1, &hash_buf, hashconfig); if (parser_status == PARSER_OK) { if (hashconfig->is_salted) { found = (hash_t *) bsearch (&hash_buf, hashes_buf, hashes_cnt, sizeof (hash_t), sort_by_hash); } else { found = (hash_t *) bsearch (&hash_buf, hashes_buf, hashes_cnt, sizeof (hash_t), sort_by_hash_no_salt); } } } if (found == NULL) continue; if (!found->cracked) potfile_remove_cracks++; found->cracked = 1; if (found) break; iter--; } } myfree (line_buf_cpy); myfree (line_buf); potfile_read_close (potfile_ctx); if (hashconfig->esalt_size) { myfree (hash_buf.esalt); } if (hashconfig->is_salted) { myfree (hash_buf.salt); } myfree (hash_buf.digest); return potfile_remove_cracks; } void potfile_destroy (potfile_ctx_t *potfile_ctx) { if (potfile_ctx->disable == 1) return; myfree (potfile_ctx->filename); }