mirror of
https://github.com/hashcat/hashcat.git
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614 lines
15 KiB
C
614 lines
15 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 "convert.h"
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#include "memory.h"
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#include "event.h"
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#include "interface.h"
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#include "filehandling.h"
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#include "outfile.h"
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#include "potfile.h"
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#include "locking.h"
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#include "shared.h"
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// get rid of this later
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int sort_by_hash (const void *v1, const void *v2, void *v3);
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int sort_by_hash_no_salt (const void *v1, const void *v2, void *v3);
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// get rid of this later
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int sort_by_hash_t_salt (const void *v1, const void *v2)
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{
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const hash_t *h1 = (const hash_t *) v1;
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const hash_t *h2 = (const hash_t *) v2;
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const salt_t *s1 = h1->salt;
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const salt_t *s2 = h2->salt;
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// testphase: this should work
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u32 n = 16;
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while (n--)
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{
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if (s1->salt_buf[n] > s2->salt_buf[n]) return ( 1);
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if (s1->salt_buf[n] < s2->salt_buf[n]) return -1;
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}
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/* original code, seems buggy since salt_len can be very big (had a case with 131 len)
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also it thinks salt_buf[x] is a char but its a u32 so salt_len should be / 4
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if (s1->salt_len > s2->salt_len) return ( 1);
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if (s1->salt_len < s2->salt_len) return -1;
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u32 n = s1->salt_len;
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while (n--)
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{
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if (s1->salt_buf[n] > s2->salt_buf[n]) return ( 1);
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if (s1->salt_buf[n] < s2->salt_buf[n]) return -1;
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}
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*/
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return 0;
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}
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int sort_by_hash_t_salt_hccap (const void *v1, const void *v2)
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{
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const hash_t *h1 = (const hash_t *) v1;
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const hash_t *h2 = (const hash_t *) v2;
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const salt_t *s1 = h1->salt;
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const salt_t *s2 = h2->salt;
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// last 2: salt_buf[10] and salt_buf[11] contain the digest (skip them)
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u32 n = 9; // 9 * 4 = 36 bytes (max length of ESSID)
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while (n--)
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{
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if (s1->salt_buf[n] > s2->salt_buf[n]) return ( 1);
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if (s1->salt_buf[n] < s2->salt_buf[n]) return -1;
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}
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return 0;
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}
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int potfile_init (hashcat_ctx_t *hashcat_ctx)
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{
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folder_config_t *folder_config = hashcat_ctx->folder_config;
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potfile_ctx_t *potfile_ctx = hashcat_ctx->potfile_ctx;
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user_options_t *user_options = hashcat_ctx->user_options;
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potfile_ctx->enabled = false;
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if (user_options->benchmark == true) return 0;
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if (user_options->keyspace == true) return 0;
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if (user_options->opencl_info == true) return 0;
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if (user_options->stdout_flag == true) return 0;
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if (user_options->speed_only == 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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if (user_options->potfile_disable == true) return 0;
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potfile_ctx->enabled = true;
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if (user_options->potfile_path == NULL)
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{
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potfile_ctx->filename = (char *) hcmalloc (HCBUFSIZ_TINY);
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potfile_ctx->fp = NULL;
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snprintf (potfile_ctx->filename, HCBUFSIZ_TINY - 1, "%s/hashcat.potfile", folder_config->profile_dir);
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}
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else
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{
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potfile_ctx->filename = hcstrdup (user_options->potfile_path);
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potfile_ctx->fp = NULL;
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}
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const int rc = potfile_write_open (hashcat_ctx);
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if (rc == -1) return -1;
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potfile_write_close (hashcat_ctx);
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// starting from here, we should allocate some scratch buffer for later use
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u8 *out_buf = (u8 *) hcmalloc (HCBUFSIZ_LARGE);
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potfile_ctx->out_buf = out_buf;
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// we need two buffers in parallel
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u8 *tmp_buf = (u8 *) hcmalloc (HCBUFSIZ_LARGE);
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potfile_ctx->tmp_buf = tmp_buf;
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return 0;
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}
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void potfile_destroy (hashcat_ctx_t *hashcat_ctx)
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{
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potfile_ctx_t *potfile_ctx = hashcat_ctx->potfile_ctx;
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if (potfile_ctx->enabled == false) return;
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hcfree (potfile_ctx->out_buf);
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hcfree (potfile_ctx->tmp_buf);
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memset (potfile_ctx, 0, sizeof (potfile_ctx_t));
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}
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int potfile_read_open (hashcat_ctx_t *hashcat_ctx)
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{
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potfile_ctx_t *potfile_ctx = hashcat_ctx->potfile_ctx;
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if (potfile_ctx->enabled == false) return 0;
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potfile_ctx->fp = fopen (potfile_ctx->filename, "rb");
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if (potfile_ctx->fp == NULL)
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{
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event_log_error (hashcat_ctx, "%s: %s", potfile_ctx->filename, strerror (errno));
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return -1;
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}
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return 0;
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}
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void potfile_read_close (hashcat_ctx_t *hashcat_ctx)
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{
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potfile_ctx_t *potfile_ctx = hashcat_ctx->potfile_ctx;
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if (potfile_ctx->enabled == false) return;
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if (potfile_ctx->fp == NULL) return;
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fclose (potfile_ctx->fp);
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}
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int potfile_write_open (hashcat_ctx_t *hashcat_ctx)
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{
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potfile_ctx_t *potfile_ctx = hashcat_ctx->potfile_ctx;
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if (potfile_ctx->enabled == false) return 0;
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FILE *fp = fopen (potfile_ctx->filename, "ab");
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if (fp == NULL)
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{
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event_log_error (hashcat_ctx, "%s: %s", potfile_ctx->filename, strerror (errno));
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return -1;
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}
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if (lock_file (fp) == -1)
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{
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fclose (fp);
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event_log_error (hashcat_ctx, "%s: %s", potfile_ctx->filename, strerror (errno));
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return -1;
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}
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potfile_ctx->fp = fp;
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return 0;
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}
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void potfile_write_close (hashcat_ctx_t *hashcat_ctx)
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{
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potfile_ctx_t *potfile_ctx = hashcat_ctx->potfile_ctx;
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if (potfile_ctx->enabled == false) return;
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fclose (potfile_ctx->fp);
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}
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void potfile_write_append (hashcat_ctx_t *hashcat_ctx, const char *out_buf, u8 *plain_ptr, unsigned int plain_len)
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{
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const hashconfig_t *hashconfig = hashcat_ctx->hashconfig;
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const potfile_ctx_t *potfile_ctx = hashcat_ctx->potfile_ctx;
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const user_options_t *user_options = hashcat_ctx->user_options;
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if (potfile_ctx->enabled == false) return;
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u8 *tmp_buf = potfile_ctx->tmp_buf;
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int tmp_len = 0;
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if (1)
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{
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const size_t out_len = strlen (out_buf);
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memcpy (tmp_buf + tmp_len, out_buf, out_len);
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tmp_len += out_len;
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tmp_buf[tmp_len] = ':';
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tmp_len += 1;
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}
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if (1)
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{
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const bool always_ascii = (hashconfig->hash_type & OPTS_TYPE_PT_ALWAYS_ASCII) ? true : false;
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if ((user_options->outfile_autohex == true) && (need_hexify (plain_ptr, plain_len, always_ascii) == true))
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{
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tmp_buf[tmp_len++] = '$';
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tmp_buf[tmp_len++] = 'H';
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tmp_buf[tmp_len++] = 'E';
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tmp_buf[tmp_len++] = 'X';
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tmp_buf[tmp_len++] = '[';
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exec_hexify ((const u8 *) plain_ptr, plain_len, (u8 *) tmp_buf + tmp_len);
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tmp_len += plain_len * 2;
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tmp_buf[tmp_len++] = ']';
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}
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else
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{
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memcpy (tmp_buf + tmp_len, plain_ptr, plain_len);
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tmp_len += plain_len;
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}
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}
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tmp_buf[tmp_len] = 0;
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fprintf (potfile_ctx->fp, "%s" EOL, tmp_buf);
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fflush (potfile_ctx->fp);
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}
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int potfile_remove_parse (hashcat_ctx_t *hashcat_ctx)
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{
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hashconfig_t *hashconfig = hashcat_ctx->hashconfig;
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hashes_t *hashes = hashcat_ctx->hashes;
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potfile_ctx_t *potfile_ctx = hashcat_ctx->potfile_ctx;
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if (potfile_ctx->enabled == false) return 0;
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hash_t *hashes_buf = hashes->hashes_buf;
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u32 hashes_cnt = hashes->hashes_cnt;
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// no solution for these special hash types (for instane because they use hashfile in output etc)
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if (hashconfig->hash_mode == 5200) return 0;
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if ((hashconfig->hash_mode >= 6200)
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&& (hashconfig->hash_mode <= 6299)) return 0;
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if (hashconfig->hash_mode == 9000) return 0;
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if ((hashconfig->hash_mode >= 13700)
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&& (hashconfig->hash_mode <= 13799)) return 0;
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hash_t hash_buf;
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hash_buf.digest = hcmalloc (hashconfig->dgst_size);
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hash_buf.salt = NULL;
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hash_buf.esalt = NULL;
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hash_buf.hash_info = NULL;
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hash_buf.cracked = 0;
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if (hashconfig->is_salted)
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{
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hash_buf.salt = (salt_t *) hcmalloc (sizeof (salt_t));
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}
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if (hashconfig->esalt_size)
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{
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hash_buf.esalt = hcmalloc (hashconfig->esalt_size);
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}
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const int rc = potfile_read_open (hashcat_ctx);
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if (rc == -1) return -1;
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char *line_buf = (char *) hcmalloc (HCBUFSIZ_LARGE);
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// to be safe work with a copy (because of line_len loop, i etc)
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// moved up here because it's easier to handle continue case
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// it's just 64kb
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char *line_buf_cpy = (char *) hcmalloc (HCBUFSIZ_LARGE);
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while (!feof (potfile_ctx->fp))
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{
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int line_len = fgetl (potfile_ctx->fp, line_buf);
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if (line_len == 0) continue;
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const int line_len_orig = line_len;
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int iter = MAX_CUT_TRIES;
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for (int i = line_len - 1; i && iter; i--, line_len--)
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{
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if (line_buf[i] != ':') continue;
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iter--;
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if (hashconfig->is_salted)
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{
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memset (hash_buf.salt, 0, sizeof (salt_t));
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}
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if (hashconfig->esalt_size)
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{
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memset (hash_buf.esalt, 0, hashconfig->esalt_size);
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}
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hash_t *found = NULL;
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if (hashconfig->hash_mode == 6800)
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{
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if (i < 64) // 64 = 16 * u32 in salt_buf[]
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{
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// manipulate salt_buf
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memcpy (hash_buf.salt->salt_buf, line_buf, i);
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hash_buf.salt->salt_len = i;
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found = (hash_t *) bsearch (&hash_buf, hashes_buf, hashes_cnt, sizeof (hash_t), sort_by_hash_t_salt);
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}
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}
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else if (hashconfig->hash_mode == 2500)
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{
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if (i < 64) // 64 = 16 * u32 in salt_buf[]
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{
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// here we have in line_buf: ESSID:MAC1:MAC2 (without the plain)
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// manipulate salt_buf
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memcpy (line_buf_cpy, line_buf, i);
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line_buf_cpy[i] = 0;
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char *mac2_pos = strrchr (line_buf_cpy, ':');
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if (mac2_pos == NULL) continue;
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mac2_pos[0] = 0;
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mac2_pos++;
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if (strlen (mac2_pos) != 12) continue;
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char *mac1_pos = strrchr (line_buf_cpy, ':');
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if (mac1_pos == NULL) continue;
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mac1_pos[0] = 0;
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mac1_pos++;
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if (strlen (mac1_pos) != 12) continue;
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u32 essid_length = mac1_pos - line_buf_cpy - 1;
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if (hashconfig->is_salted)
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{
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// this should be always true, but we need it to make scan-build happy
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memcpy (hash_buf.salt->salt_buf, line_buf_cpy, essid_length);
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hash_buf.salt->salt_len = essid_length;
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}
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found = (hash_t *) bsearch (&hash_buf, hashes_buf, hashes_cnt, sizeof (hash_t), sort_by_hash_t_salt_hccap);
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if (found)
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{
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wpa_t *wpa = (wpa_t *) found->esalt;
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// compare hex string(s) vs binary MAC address(es)
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for (u32 mac_idx = 0, orig_mac_idx = 0; mac_idx < 6; mac_idx += 1, orig_mac_idx += 2)
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{
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if (wpa->orig_mac1[mac_idx] != hex_to_u8 ((const u8 *) &mac1_pos[orig_mac_idx]))
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{
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found = NULL;
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break;
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}
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}
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// early skip ;)
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if (!found) continue;
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for (u32 mac_idx = 0, orig_mac_idx = 0; mac_idx < 6; mac_idx += 1, orig_mac_idx += 2)
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{
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if (wpa->orig_mac2[mac_idx] != hex_to_u8 ((const u8 *) &mac2_pos[orig_mac_idx]))
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{
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found = NULL;
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break;
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}
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}
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}
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}
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}
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else
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{
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int parser_status = hashconfig->parse_func ((u8 *) line_buf, line_len - 1, &hash_buf, hashconfig);
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if (parser_status == PARSER_OK)
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{
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if (hashconfig->is_salted)
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{
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found = (hash_t *) hc_bsearch_r (&hash_buf, hashes_buf, hashes_cnt, sizeof (hash_t), sort_by_hash, (void *) hashconfig);
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}
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else
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{
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found = (hash_t *) hc_bsearch_r (&hash_buf, hashes_buf, hashes_cnt, sizeof (hash_t), sort_by_hash_no_salt, (void *) hashconfig);
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}
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}
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}
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if (found == NULL) continue;
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char *pw_buf = line_buf + line_len;
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int pw_len = line_len_orig - line_len;
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found->pw_buf = (char *) hcmalloc (pw_len + 1);
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found->pw_len = pw_len;
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memcpy (found->pw_buf, pw_buf, pw_len);
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found->pw_buf[found->pw_len] = 0;
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found->cracked = 1;
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break;
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}
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}
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hcfree (line_buf_cpy);
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hcfree (line_buf);
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potfile_read_close (hashcat_ctx);
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if (hashconfig->esalt_size)
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{
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hcfree (hash_buf.esalt);
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}
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if (hashconfig->is_salted)
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{
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hcfree (hash_buf.salt);
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}
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hcfree (hash_buf.digest);
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return 0;
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}
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int potfile_handle_show (hashcat_ctx_t *hashcat_ctx)
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{
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hashes_t *hashes = hashcat_ctx->hashes;
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potfile_ctx_t *potfile_ctx = hashcat_ctx->potfile_ctx;
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hash_t *hashes_buf = hashes->hashes_buf;
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u32 salts_cnt = hashes->salts_cnt;
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salt_t *salts_buf = hashes->salts_buf;
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for (u32 salt_idx = 0; salt_idx < salts_cnt; salt_idx++)
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{
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salt_t *salt_buf = salts_buf + salt_idx;
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u32 digests_cnt = salt_buf->digests_cnt;
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for (u32 digest_idx = 0; digest_idx < digests_cnt; digest_idx++)
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{
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const u32 hashes_idx = salt_buf->digests_offset + digest_idx;
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u32 *digests_shown = hashes->digests_shown;
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if (digests_shown[hashes_idx] == 0) continue;
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u8 *out_buf = potfile_ctx->out_buf;
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out_buf[0] = 0;
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ascii_digest (hashcat_ctx, (char *) out_buf, HCBUFSIZ_LARGE, salt_idx, digest_idx);
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hash_t *hash = &hashes_buf[hashes_idx];
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// user
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unsigned char *username = NULL;
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u32 user_len = 0;
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if (hash->hash_info != NULL)
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{
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user_t *user = hash->hash_info->user;
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if (user)
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{
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username = (unsigned char *) (user->user_name);
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user_len = user->user_len;
|
|
|
|
username[user_len] = 0;
|
|
}
|
|
}
|
|
|
|
u8 *tmp_buf = potfile_ctx->tmp_buf;
|
|
|
|
tmp_buf[0] = 0;
|
|
|
|
const int tmp_len = outfile_write (hashcat_ctx, (char *) out_buf, (u8 *) hash->pw_buf, hash->pw_len, 0, username, user_len, (char *) tmp_buf);
|
|
|
|
EVENT_DATA (EVENT_POTFILE_HASH_SHOW, tmp_buf, tmp_len);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int potfile_handle_left (hashcat_ctx_t *hashcat_ctx)
|
|
{
|
|
hashes_t *hashes = hashcat_ctx->hashes;
|
|
potfile_ctx_t *potfile_ctx = hashcat_ctx->potfile_ctx;
|
|
|
|
hash_t *hashes_buf = hashes->hashes_buf;
|
|
|
|
u32 salts_cnt = hashes->salts_cnt;
|
|
salt_t *salts_buf = hashes->salts_buf;
|
|
|
|
for (u32 salt_idx = 0; salt_idx < salts_cnt; salt_idx++)
|
|
{
|
|
salt_t *salt_buf = salts_buf + salt_idx;
|
|
|
|
u32 digests_cnt = salt_buf->digests_cnt;
|
|
|
|
for (u32 digest_idx = 0; digest_idx < digests_cnt; digest_idx++)
|
|
{
|
|
const u32 hashes_idx = salt_buf->digests_offset + digest_idx;
|
|
|
|
u32 *digests_shown = hashes->digests_shown;
|
|
|
|
if (digests_shown[hashes_idx] == 1) continue;
|
|
|
|
u8 *out_buf = potfile_ctx->out_buf;
|
|
|
|
out_buf[0] = 0;
|
|
|
|
ascii_digest (hashcat_ctx, (char *) out_buf, HCBUFSIZ_LARGE, salt_idx, digest_idx);
|
|
|
|
hash_t *hash = &hashes_buf[hashes_idx];
|
|
|
|
// user
|
|
unsigned char *username = NULL;
|
|
|
|
u32 user_len = 0;
|
|
|
|
if (hash->hash_info != NULL)
|
|
{
|
|
user_t *user = hash->hash_info->user;
|
|
|
|
if (user)
|
|
{
|
|
username = (unsigned char *) (user->user_name);
|
|
|
|
user_len = user->user_len;
|
|
|
|
username[user_len] = 0;
|
|
}
|
|
}
|
|
|
|
u8 *tmp_buf = potfile_ctx->tmp_buf;
|
|
|
|
tmp_buf[0] = 0;
|
|
|
|
const int tmp_len = outfile_write (hashcat_ctx, (char *) out_buf, NULL, 0, 0, username, user_len, (char *) tmp_buf);
|
|
|
|
EVENT_DATA (EVENT_POTFILE_HASH_LEFT, tmp_buf, tmp_len);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|