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hashcat/src/modules/module_19600.c

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/**
* Author......: See docs/credits.txt
* License.....: MIT
*/
#include "common.h"
#include "types.h"
#include "modules.h"
#include "bitops.h"
#include "convert.h"
#include "shared.h"
static const u32 ATTACK_EXEC = ATTACK_EXEC_OUTSIDE_KERNEL;
static const u32 DGST_POS0 = 0;
static const u32 DGST_POS1 = 1;
static const u32 DGST_POS2 = 2;
static const u32 DGST_POS3 = 3;
static const u32 DGST_SIZE = DGST_SIZE_4_4;
static const u32 HASH_CATEGORY = HASH_CATEGORY_NETWORK_PROTOCOL;
static const char *HASH_NAME = "Kerberos 5, etype 17, TGS-REP";
static const u64 KERN_TYPE = 19600;
static const u32 OPTI_TYPE = OPTI_TYPE_ZERO_BYTE
| OPTI_TYPE_NOT_ITERATED
| OPTI_TYPE_SLOW_HASH_SIMD_LOOP;
static const u64 OPTS_TYPE = OPTS_TYPE_PT_GENERATE_LE;
static const u32 SALT_TYPE = SALT_TYPE_EMBEDDED;
static const char *ST_PASS = "hashcat";
static const char *ST_HASH = "$krb5tgs$17$srv_http$synacktiv.local$849e31b3db1c1f203fa20b85$948690f5875125348286ad3346d27b43eaabc71896b620c16de7ddcdbd561628c650c508856a3f574261948b6db4b48332d30536e978046a423ad4368f9a69b4dc4642dab4e0d475d8299be718fd6f98ac85a771b457b2453e78c9411dfce572b19660fe7a5a8246d9b2a91ea2f14d1986ea0a77ecf9b8330bc8fd9ab540bcf46b74c5aa7005cfccd89ec05f66aeab30c6b2bf8595cf6c9a1b68ad885258850c4b1dd9265f270fb2af52fd76c16246df51ea67efc58a65c345686c84e43642febe908a";
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; }
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; }
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; }
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; }
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; }
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; }
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; }
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; }
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; }
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; }
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; }
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; }
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; }
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; }
typedef struct krb5tgs_17
{
u32 user[128];
u32 domain[128];
u32 account_info[512];
u32 account_info_len;
u32 checksum[3];
u32 edata2[5120];
u32 edata2_len;
} krb5tgs_17_t;
typedef struct krb5tgs_17_tmp
{
u32 ipad[5];
u32 opad[5];
u32 dgst[10];
u32 out[10];
} krb5tgs_17_tmp_t;
static const char *SIGNATURE_KRB5TGS = "$krb5tgs$17$";
u64 module_tmp_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)
{
const u64 tmp_size = (const u64) sizeof (krb5tgs_17_tmp_t);
return tmp_size;
}
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)
{
const u64 esalt_size = (const u64) sizeof (krb5tgs_17_t);
return esalt_size;
}
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)
{
u32 *digest = (u32 *) digest_buf;
krb5tgs_17_t *krb5tgs = (krb5tgs_17_t *) esalt_buf;
token_t token;
token.signatures_cnt = 1;
token.signatures_buf[0] = SIGNATURE_KRB5TGS;
token.len[0] = 12;
token.attr[0] = TOKEN_ATTR_FIXED_LENGTH
| TOKEN_ATTR_VERIFY_SIGNATURE;
/**
* $krb5tgs$17$*user*realm*$checksum$edata2
* $krb5tgs$17$*user*realm*spn*$checksum$edata2
*/
// assume no signature found
if (line_len < 12) return (PARSER_SALT_LENGTH);
char *spn_info_start = strchr ((const char *) line_buf + 12 + 1, '*');
int is_spn_provided = 0;
// assume $krb5tgs$17$user$realm$checksum$edata2
if (spn_info_start == NULL)
{
token.token_cnt = 5;
token.sep[1] = '$';
token.len_min[1] = 1;
token.len_max[1] = 512;
token.attr[1] = TOKEN_ATTR_VERIFY_LENGTH;
token.sep[2] = '$';
token.len_min[2] = 1;
token.len_max[2] = 512;
token.attr[2] = TOKEN_ATTR_VERIFY_LENGTH;
token.sep[3] = '$';
// hmac-sha1 stripped to 12bytes
token.len_min[3] = 24;
token.len_max[3] = 24;
token.attr[3] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
token.sep[4] = '$';
token.len_min[4] = 64;
token.len_max[4] = 40960;
token.attr[4] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
}
// assume $krb5tgs$17$user$realm$*spn*$checksum$edata2
else
{
char *spn_info_stop = strchr ((const char *) spn_info_start + 1, '*');
if (spn_info_stop == NULL) return (PARSER_SEPARATOR_UNMATCHED);
spn_info_stop++; // we want the * $char included
spn_info_stop++; // we want the $ char included
const int spn_info_len = spn_info_stop - spn_info_start;
token.token_cnt = 6;
token.sep[1] = '$';
token.len_min[1] = 1;
token.len_max[1] = 512;
token.attr[1] = TOKEN_ATTR_VERIFY_LENGTH;
token.sep[2] = '$';
token.len_min[2] = 1;
token.len_max[2] = 512;
token.attr[2] = TOKEN_ATTR_VERIFY_LENGTH;
token.len[3] = spn_info_len;
token.attr[3] = TOKEN_ATTR_FIXED_LENGTH;
token.sep[4] = '$';
token.len_min[4] = 24;
token.len_max[4] = 24;
token.attr[4] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
token.sep[5] = '$';
token.len_min[5] = 64;
token.len_max[5] = 40960;
token.attr[5] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
is_spn_provided = 1;
}
const int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);
const u8 *user_pos;
const u8 *domain_pos;
const u8 *checksum_pos;
const u8 *data_pos;
int user_len;
int domain_len;
int data_len;
int account_info_len;
user_pos = token.buf[1];
user_len = token.len[1];
memcpy(krb5tgs->user, user_pos, user_len);
domain_pos = token.buf[2];
domain_len = token.len[2];
memcpy(krb5tgs->domain, domain_pos, domain_len);
checksum_pos = token.buf[3 + is_spn_provided];
data_pos = token.buf[4 + is_spn_provided];
data_len = token.len[4 + is_spn_provided];
account_info_len = token.len[2] + token.len[1];
u8 *account_info_ptr = (u8 *) krb5tgs->account_info;
// domain must be uppercase
u8 domain[128];
memcpy(domain, domain_pos, domain_len);
uppercase(domain, domain_len);
memcpy(account_info_ptr, domain, domain_len);
memcpy(account_info_ptr + domain_len, user_pos, user_len);
krb5tgs->account_info_len = account_info_len;
// hmac-sha1 is reduced to 12 bytes
krb5tgs->checksum[0] = byte_swap_32 (hex_to_u32 (checksum_pos + 0));
krb5tgs->checksum[1] = byte_swap_32 (hex_to_u32 (checksum_pos + 8));
krb5tgs->checksum[2] = byte_swap_32 (hex_to_u32 (checksum_pos + 16));
u8 *edata_ptr = (u8 *) krb5tgs->edata2;
for (int i = 0; i < data_len; i += 2)
{
const u8 p0 = data_pos[i + 0];
const u8 p1 = data_pos[i + 1];
*edata_ptr++ = hex_convert (p1) << 0
| hex_convert (p0) << 4;
}
krb5tgs->edata2_len = data_len / 2;
salt->salt_buf[0] = krb5tgs->checksum[0];
salt->salt_buf[1] = krb5tgs->checksum[1];
salt->salt_buf[2] = krb5tgs->checksum[2];
salt->salt_iter = 4096 - 1;
digest[0] = krb5tgs->checksum[0];
digest[1] = krb5tgs->checksum[1];
digest[2] = krb5tgs->checksum[2];
digest[3] = 0;
return (PARSER_OK);
}
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)
{
const krb5tgs_17_t *krb5tgs = (const krb5tgs_17_t *) esalt_buf;
char data[5120 * 4 * 2] = { 0 };
for (u32 i = 0, j = 0; i < krb5tgs->edata2_len; i += 1, j += 2)
{
u8 *ptr_edata2 = (u8 *) krb5tgs->edata2;
sprintf (data + j, "%02x", ptr_edata2[i]);
}
const int line_len = snprintf (line_buf, line_size, "%s%s$%s$%08x%08x%08x$%s",
SIGNATURE_KRB5TGS,
(char *) krb5tgs->user,
(char *) krb5tgs->domain,
krb5tgs->checksum[0],
krb5tgs->checksum[1],
krb5tgs->checksum[2],
data);
return line_len;
}
void module_init (module_ctx_t *module_ctx)
{
module_ctx->module_context_size = MODULE_CONTEXT_SIZE_CURRENT;
module_ctx->module_interface_version = MODULE_INTERFACE_VERSION_CURRENT;
module_ctx->module_attack_exec = module_attack_exec;
module_ctx->module_benchmark_esalt = MODULE_DEFAULT;
module_ctx->module_benchmark_hook_salt = MODULE_DEFAULT;
module_ctx->module_benchmark_mask = MODULE_DEFAULT;
module_ctx->module_benchmark_salt = MODULE_DEFAULT;
module_ctx->module_build_plain_postprocess = MODULE_DEFAULT;
module_ctx->module_deep_comp_kernel = MODULE_DEFAULT;
module_ctx->module_dgst_pos0 = module_dgst_pos0;
module_ctx->module_dgst_pos1 = module_dgst_pos1;
module_ctx->module_dgst_pos2 = module_dgst_pos2;
module_ctx->module_dgst_pos3 = module_dgst_pos3;
module_ctx->module_dgst_size = module_dgst_size;
module_ctx->module_dictstat_disable = MODULE_DEFAULT;
module_ctx->module_esalt_size = module_esalt_size;
module_ctx->module_extra_buffer_size = MODULE_DEFAULT;
module_ctx->module_extra_tmp_size = MODULE_DEFAULT;
module_ctx->module_forced_outfile_format = MODULE_DEFAULT;
module_ctx->module_hash_binary_count = MODULE_DEFAULT;
module_ctx->module_hash_binary_parse = MODULE_DEFAULT;
module_ctx->module_hash_binary_save = MODULE_DEFAULT;
module_ctx->module_hash_decode_potfile = MODULE_DEFAULT;
module_ctx->module_hash_decode_zero_hash = MODULE_DEFAULT;
module_ctx->module_hash_decode = module_hash_decode;
module_ctx->module_hash_encode_status = MODULE_DEFAULT;
module_ctx->module_hash_encode_potfile = MODULE_DEFAULT;
module_ctx->module_hash_encode = module_hash_encode;
module_ctx->module_hash_init_selftest = MODULE_DEFAULT;
module_ctx->module_hash_mode = MODULE_DEFAULT;
module_ctx->module_hash_category = module_hash_category;
module_ctx->module_hash_name = module_hash_name;
module_ctx->module_hashes_count_min = MODULE_DEFAULT;
module_ctx->module_hashes_count_max = MODULE_DEFAULT;
module_ctx->module_hlfmt_disable = MODULE_DEFAULT;
module_ctx->module_hook12 = MODULE_DEFAULT;
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_DEFAULT;
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_tmp_size;
module_ctx->module_unstable_warning = MODULE_DEFAULT;
module_ctx->module_warmup_disable = MODULE_DEFAULT;
}
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