mirror of
https://github.com/hashcat/hashcat.git
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428 lines
17 KiB
C
428 lines
17 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 "modules.h"
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#include "bitops.h"
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#include "convert.h"
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#include "shared.h"
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static const u32 ATTACK_EXEC = ATTACK_EXEC_INSIDE_KERNEL;
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static const u32 DGST_POS0 = 0;
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static const u32 DGST_POS1 = 1;
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static const u32 DGST_POS2 = 2;
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static const u32 DGST_POS3 = 3;
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static const u32 DGST_SIZE = DGST_SIZE_4_4;
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static const u32 HASH_CATEGORY = HASH_CATEGORY_NETWORK_PROTOCOL;
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static const char *HASH_NAME = "Kerberos 5, etype 23, TGS-REP";
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static const u64 KERN_TYPE = 13100;
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static const u32 OPTI_TYPE = OPTI_TYPE_ZERO_BYTE
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| OPTI_TYPE_NOT_ITERATED;
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static const u64 OPTS_TYPE = OPTS_TYPE_STOCK_MODULE
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| OPTS_TYPE_PT_GENERATE_LE
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| OPTS_TYPE_MAXIMUM_THREADS;
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static const u32 SALT_TYPE = SALT_TYPE_EMBEDDED;
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static const char *ST_PASS = "hashcat";
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static const char *ST_HASH = "$krb5tgs$23$*user$realm$test/spn*$b548e10f5694ae018d7ad63c257af7dc$35e8e45658860bc31a859b41a08989265f4ef8afd75652ab4d7a30ef151bf6350d879ae189a8cb769e01fa573c6315232b37e4bcad9105520640a781e5fd85c09615e78267e494f433f067cc6958200a82f70627ce0eebc2ac445729c2a8a0255dc3ede2c4973d2d93ac8c1a56b26444df300cb93045d05ff2326affaa3ae97f5cd866c14b78a459f0933a550e0b6507bf8af27c2391ef69fbdd649dd059a4b9ae2440edd96c82479645ccdb06bae0eead3b7f639178a90cf24d9a";
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u32 module_attack_exec (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ATTACK_EXEC; }
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u32 module_dgst_pos0 (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS0; }
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u32 module_dgst_pos1 (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS1; }
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u32 module_dgst_pos2 (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS2; }
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u32 module_dgst_pos3 (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS3; }
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u32 module_dgst_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_SIZE; }
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u32 module_hash_category (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return HASH_CATEGORY; }
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const char *module_hash_name (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return HASH_NAME; }
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u64 module_kern_type (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return KERN_TYPE; }
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u32 module_opti_type (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return OPTI_TYPE; }
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u64 module_opts_type (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return OPTS_TYPE; }
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u32 module_salt_type (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return SALT_TYPE; }
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const char *module_st_hash (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_HASH; }
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const char *module_st_pass (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_PASS; }
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typedef struct krb5tgs
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{
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u32 account_info[512];
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u32 checksum[4];
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u32 edata2[5120];
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u32 edata2_len;
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u32 format;
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} krb5tgs_t;
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static const char *SIGNATURE_KRB5TGS = "$krb5tgs$";
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char *module_jit_build_options (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hashes_t *hashes, MAYBE_UNUSED const hc_device_param_t *device_param)
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{
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char *jit_build_options = NULL;
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u32 native_threads = 0;
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if (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU)
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{
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native_threads = 1;
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}
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else if (device_param->opencl_device_type & CL_DEVICE_TYPE_GPU)
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{
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#if defined (__APPLE__)
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native_threads = 32;
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#else
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if (device_param->device_local_mem_size < 49152)
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{
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native_threads = MIN (device_param->kernel_preferred_wgs_multiple, 32); // We can't just set 32, because Intel GPU need 8
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}
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else
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{
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native_threads = device_param->kernel_preferred_wgs_multiple;
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}
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#endif
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}
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hc_asprintf (&jit_build_options, "-D FIXED_LOCAL_SIZE=%u -D _unroll", native_threads);
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return jit_build_options;
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}
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u64 module_esalt_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
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{
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const u64 esalt_size = (const u64) sizeof (krb5tgs_t);
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return esalt_size;
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}
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int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED void *digest_buf, MAYBE_UNUSED salt_t *salt, MAYBE_UNUSED void *esalt_buf, MAYBE_UNUSED void *hook_salt_buf, MAYBE_UNUSED hashinfo_t *hash_info, const char *line_buf, MAYBE_UNUSED const int line_len)
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{
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u32 *digest = (u32 *) digest_buf;
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krb5tgs_t *krb5tgs = (krb5tgs_t *) esalt_buf;
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hc_token_t token;
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memset (&token, 0, sizeof (hc_token_t));
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token.signatures_cnt = 1;
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token.signatures_buf[0] = SIGNATURE_KRB5TGS;
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token.len[0] = 9;
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token.attr[0] = TOKEN_ATTR_FIXED_LENGTH
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| TOKEN_ATTR_VERIFY_SIGNATURE;
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/**
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* hc
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* format 1: $krb5tgs$23$*user$realm$spn*$checksum$edata2
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* format 2: $krb5tgs$23$checksum$edata2
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*
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* jtr
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* format 3: $krb5tgs$spn:checksum$edata2
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*/
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if (line_len < (int) strlen (SIGNATURE_KRB5TGS)) return (PARSER_SALT_LENGTH);
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memset (krb5tgs, 0, sizeof (krb5tgs_t));
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token.token_cnt = 4;
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if (line_buf[token.len[0]] == '2' && line_buf[token.len[0] + 1] == '3' && line_buf[token.len[0] + 2] == '$')
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{
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if (line_buf[token.len[0] + 3] == '*')
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{
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char *account_info_start = (char *) line_buf + 12; // we want the * char included
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char *account_info_stop = strchr ((const char *) account_info_start + 1, '*');
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if (account_info_stop == NULL) return (PARSER_SEPARATOR_UNMATCHED);
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account_info_stop++; // we want the * char included
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account_info_stop++; // we want the $ char included
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const int account_info_len = account_info_stop - account_info_start;
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token.token_cnt++;
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// etype
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token.sep[1] = '$';
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token.len[1] = 2;
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token.attr[1] = TOKEN_ATTR_FIXED_LENGTH
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| TOKEN_ATTR_VERIFY_DIGIT;
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// user$realm$spn
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token.len[2] = account_info_len;
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token.attr[2] = TOKEN_ATTR_FIXED_LENGTH;
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// checksum
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token.sep[3] = '$';
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token.len[3] = 32;
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token.attr[3] = TOKEN_ATTR_FIXED_LENGTH
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| TOKEN_ATTR_VERIFY_HEX;
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// edata2
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token.sep[4] = '$';
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token.len_min[4] = 64;
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token.len_max[4] = 40960;
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token.attr[4] = TOKEN_ATTR_VERIFY_LENGTH
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| TOKEN_ATTR_VERIFY_HEX;
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krb5tgs->format = 1;
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}
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else
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{
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// etype
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token.sep[1] = '$';
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token.len[1] = 2;
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token.attr[1] = TOKEN_ATTR_FIXED_LENGTH
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| TOKEN_ATTR_VERIFY_DIGIT;
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// checksum
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token.sep[2] = '$';
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token.len[2] = 32;
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token.attr[2] = TOKEN_ATTR_FIXED_LENGTH
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| TOKEN_ATTR_VERIFY_HEX;
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// edata2
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token.sep[3] = '$';
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token.len_min[3] = 64;
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token.len_max[3] = 40960;
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token.attr[3] = TOKEN_ATTR_VERIFY_LENGTH
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| TOKEN_ATTR_VERIFY_HEX;
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krb5tgs->format = 2;
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}
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}
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else
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{
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// spn
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token.sep[1] = ':';
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token.len_min[1] = 0;
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token.len_max[1] = 2048;
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token.attr[1] = TOKEN_ATTR_VERIFY_LENGTH;
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// checksum
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token.sep[2] = '$';
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token.len[2] = 32;
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token.attr[2] = TOKEN_ATTR_FIXED_LENGTH
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| TOKEN_ATTR_VERIFY_HEX;
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// edata2
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token.sep[3] = '$';
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token.len_min[3] = 64;
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token.len_max[3] = 40960;
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token.attr[3] = TOKEN_ATTR_VERIFY_LENGTH
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| TOKEN_ATTR_VERIFY_HEX;
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krb5tgs->format = 3;
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}
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const int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
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if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);
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const u8 *checksum_pos = NULL;
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const u8 *data_pos = NULL;
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int data_len = 0;
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if (krb5tgs->format == 1)
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{
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checksum_pos = token.buf[3];
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data_pos = token.buf[4];
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data_len = token.len[4];
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memcpy (krb5tgs->account_info, token.buf[2], token.len[2]);
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}
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else if (krb5tgs->format == 2)
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{
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checksum_pos = token.buf[2];
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data_pos = token.buf[3];
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data_len = token.len[3];
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krb5tgs->account_info[0] = 0;
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}
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else if (krb5tgs->format == 3)
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{
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checksum_pos = token.buf[2];
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data_pos = token.buf[3];
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data_len = token.len[3];
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memcpy (krb5tgs->account_info, token.buf[1], token.len[1]);
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}
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if (checksum_pos == NULL || data_pos == NULL) return (PARSER_SALT_VALUE);
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krb5tgs->checksum[0] = hex_to_u32 (checksum_pos + 0);
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krb5tgs->checksum[1] = hex_to_u32 (checksum_pos + 8);
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krb5tgs->checksum[2] = hex_to_u32 (checksum_pos + 16);
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krb5tgs->checksum[3] = hex_to_u32 (checksum_pos + 24);
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u8 *edata_ptr = (u8 *) krb5tgs->edata2;
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for (int i = 0; i < data_len; i += 2)
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{
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const u8 p0 = data_pos[i + 0];
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const u8 p1 = data_pos[i + 1];
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*edata_ptr++ = hex_convert (p1) << 0
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| hex_convert (p0) << 4;
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}
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krb5tgs->edata2_len = data_len / 2;
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/* this is needed for hmac_md5 */
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*edata_ptr++ = 0x80;
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salt->salt_buf[0] = krb5tgs->checksum[0];
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salt->salt_buf[1] = krb5tgs->checksum[1];
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salt->salt_buf[2] = krb5tgs->checksum[2];
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salt->salt_buf[3] = krb5tgs->checksum[3];
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salt->salt_len = 16;
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digest[0] = krb5tgs->checksum[0];
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digest[1] = krb5tgs->checksum[1];
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digest[2] = krb5tgs->checksum[2];
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digest[3] = krb5tgs->checksum[3];
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return (PARSER_OK);
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}
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int module_hash_encode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const void *digest_buf, MAYBE_UNUSED const salt_t *salt, MAYBE_UNUSED const void *esalt_buf, MAYBE_UNUSED const void *hook_salt_buf, MAYBE_UNUSED const hashinfo_t *hash_info, char *line_buf, MAYBE_UNUSED const int line_size)
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{
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const krb5tgs_t *krb5tgs = (const krb5tgs_t *) esalt_buf;
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char data[5120 * 4 * 2] = { 0 };
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for (u32 i = 0, j = 0; i < krb5tgs->edata2_len; i += 1, j += 2)
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{
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u8 *ptr_edata2 = (u8 *) krb5tgs->edata2;
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snprintf (data + j, 3, "%02x", ptr_edata2[i]);
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}
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int line_len;
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// preserve the input hash format
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if (krb5tgs->format != 3) // hc
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{
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line_len = snprintf (line_buf, line_size, "%s23$%s%08x%08x%08x%08x$%s",
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SIGNATURE_KRB5TGS,
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(char *) krb5tgs->account_info,
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byte_swap_32 (krb5tgs->checksum[0]),
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byte_swap_32 (krb5tgs->checksum[1]),
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byte_swap_32 (krb5tgs->checksum[2]),
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byte_swap_32 (krb5tgs->checksum[3]),
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data);
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}
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else // jtr
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{
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line_len = snprintf (line_buf, line_size, "%s%s:%08x%08x%08x%08x$%s",
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SIGNATURE_KRB5TGS,
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(char *) krb5tgs->account_info,
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byte_swap_32 (krb5tgs->checksum[0]),
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byte_swap_32 (krb5tgs->checksum[1]),
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byte_swap_32 (krb5tgs->checksum[2]),
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byte_swap_32 (krb5tgs->checksum[3]),
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data);
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}
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return line_len;
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}
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void module_init (module_ctx_t *module_ctx)
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{
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module_ctx->module_context_size = MODULE_CONTEXT_SIZE_CURRENT;
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module_ctx->module_interface_version = MODULE_INTERFACE_VERSION_CURRENT;
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module_ctx->module_attack_exec = module_attack_exec;
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module_ctx->module_benchmark_esalt = MODULE_DEFAULT;
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module_ctx->module_benchmark_hook_salt = MODULE_DEFAULT;
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module_ctx->module_benchmark_mask = MODULE_DEFAULT;
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module_ctx->module_benchmark_charset = MODULE_DEFAULT;
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module_ctx->module_benchmark_salt = MODULE_DEFAULT;
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module_ctx->module_build_plain_postprocess = MODULE_DEFAULT;
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module_ctx->module_deep_comp_kernel = MODULE_DEFAULT;
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module_ctx->module_deprecated_notice = MODULE_DEFAULT;
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module_ctx->module_dgst_pos0 = module_dgst_pos0;
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module_ctx->module_dgst_pos1 = module_dgst_pos1;
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module_ctx->module_dgst_pos2 = module_dgst_pos2;
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module_ctx->module_dgst_pos3 = module_dgst_pos3;
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module_ctx->module_dgst_size = module_dgst_size;
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module_ctx->module_dictstat_disable = MODULE_DEFAULT;
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module_ctx->module_esalt_size = module_esalt_size;
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module_ctx->module_extra_buffer_size = MODULE_DEFAULT;
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module_ctx->module_extra_tmp_size = MODULE_DEFAULT;
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module_ctx->module_extra_tuningdb_block = MODULE_DEFAULT;
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module_ctx->module_forced_outfile_format = MODULE_DEFAULT;
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module_ctx->module_hash_binary_count = MODULE_DEFAULT;
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module_ctx->module_hash_binary_parse = MODULE_DEFAULT;
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module_ctx->module_hash_binary_save = MODULE_DEFAULT;
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module_ctx->module_hash_decode_postprocess = MODULE_DEFAULT;
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module_ctx->module_hash_decode_potfile = MODULE_DEFAULT;
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module_ctx->module_hash_decode_zero_hash = MODULE_DEFAULT;
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module_ctx->module_hash_decode = module_hash_decode;
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module_ctx->module_hash_encode_status = MODULE_DEFAULT;
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module_ctx->module_hash_encode_potfile = MODULE_DEFAULT;
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module_ctx->module_hash_encode = module_hash_encode;
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module_ctx->module_hash_init_selftest = MODULE_DEFAULT;
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module_ctx->module_hash_mode = MODULE_DEFAULT;
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module_ctx->module_hash_category = module_hash_category;
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module_ctx->module_hash_name = module_hash_name;
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module_ctx->module_hashes_count_min = MODULE_DEFAULT;
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module_ctx->module_hashes_count_max = MODULE_DEFAULT;
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module_ctx->module_hlfmt_disable = MODULE_DEFAULT;
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module_ctx->module_hook_extra_param_size = MODULE_DEFAULT;
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module_ctx->module_hook_extra_param_init = MODULE_DEFAULT;
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module_ctx->module_hook_extra_param_term = MODULE_DEFAULT;
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module_ctx->module_hook12 = MODULE_DEFAULT;
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module_ctx->module_hook23 = MODULE_DEFAULT;
|
|
module_ctx->module_hook_salt_size = MODULE_DEFAULT;
|
|
module_ctx->module_hook_size = MODULE_DEFAULT;
|
|
module_ctx->module_jit_build_options = module_jit_build_options;
|
|
module_ctx->module_jit_cache_disable = MODULE_DEFAULT;
|
|
module_ctx->module_kernel_accel_max = MODULE_DEFAULT;
|
|
module_ctx->module_kernel_accel_min = MODULE_DEFAULT;
|
|
module_ctx->module_kernel_loops_max = MODULE_DEFAULT;
|
|
module_ctx->module_kernel_loops_min = MODULE_DEFAULT;
|
|
module_ctx->module_kernel_threads_max = MODULE_DEFAULT;
|
|
module_ctx->module_kernel_threads_min = MODULE_DEFAULT;
|
|
module_ctx->module_kern_type = module_kern_type;
|
|
module_ctx->module_kern_type_dynamic = MODULE_DEFAULT;
|
|
module_ctx->module_opti_type = module_opti_type;
|
|
module_ctx->module_opts_type = module_opts_type;
|
|
module_ctx->module_outfile_check_disable = MODULE_DEFAULT;
|
|
module_ctx->module_outfile_check_nocomp = MODULE_DEFAULT;
|
|
module_ctx->module_potfile_custom_check = MODULE_DEFAULT;
|
|
module_ctx->module_potfile_disable = MODULE_DEFAULT;
|
|
module_ctx->module_potfile_keep_all_hashes = MODULE_DEFAULT;
|
|
module_ctx->module_pwdump_column = MODULE_DEFAULT;
|
|
module_ctx->module_pw_max = MODULE_DEFAULT;
|
|
module_ctx->module_pw_min = MODULE_DEFAULT;
|
|
module_ctx->module_salt_max = MODULE_DEFAULT;
|
|
module_ctx->module_salt_min = MODULE_DEFAULT;
|
|
module_ctx->module_salt_type = module_salt_type;
|
|
module_ctx->module_separator = MODULE_DEFAULT;
|
|
module_ctx->module_st_hash = module_st_hash;
|
|
module_ctx->module_st_pass = module_st_pass;
|
|
module_ctx->module_tmp_size = MODULE_DEFAULT;
|
|
module_ctx->module_unstable_warning = MODULE_DEFAULT;
|
|
module_ctx->module_warmup_disable = MODULE_DEFAULT;
|
|
}
|