mirror of
https://github.com/hashcat/hashcat.git
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317 lines
15 KiB
C
317 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 "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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#include "memory.h"
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#include "emu_inc_hash_md5.h"
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static const u32 ATTACK_EXEC = ATTACK_EXEC_OUTSIDE_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; // 4_3
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static const u32 HASH_CATEGORY = HASH_CATEGORY_NETWORK_PROTOCOL;
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static const char *HASH_NAME = "SNMPv3 HMAC-MD5-96";
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static const u64 KERN_TYPE = 25100;
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static const u32 OPTI_TYPE = OPTI_TYPE_ZERO_BYTE;
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static const u64 OPTS_TYPE = OPTS_TYPE_PT_GENERATE_LE;
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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 = "$SNMPv3$1$76$3081b10201033011020430f6f3d5020300ffe304010702010304373035040d80001f888059dc486145a2632202010802020ab90405706970706f040c00000000000000000000000004080000000103d5321a0460826ecf6443956d4c364bfc6f6ffc8ee0df000ffd0955af12d2c0f3c60fadea417d2bb80c0b2c1fa7a46ce44f9f16e15ee830a49881f60ecfa757d2f04000eb39a94058121d88ca20eeef4e6bf06784c67c15f144915d9bc2c6a0461da92a4abe$80001f888059dc486145a26322$c51ba677ad96869c1cb32196";
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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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static const char *SIGNATURE_SNMPV3 = "$SNMPv3$1$";
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#define SNMPV3_SALT_MAX 1500
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#define SNMPV3_ENGINEID_MAX 32
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#define SNMPV3_MSG_AUTH_PARAMS_MAX 12
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#define SNMPV3_ROUNDS 1048576
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#define SNMPV3_MAX_PW_LENGTH 64
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#define SNMPV3_TMP_ELEMS 4096 // 4096 = (256 (max pw length) * 64) / sizeof (u32)
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#define SNMPV3_HASH_ELEMS 4
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#define SNMPV3_MAX_SALT_ELEMS 512 // 512 * 4 = 2048 > 1500, also has to be multiple of 64
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#define SNMPV3_MAX_ENGINE_ELEMS 16 // 16 * 4 = 64 > 32, also has to be multiple of 64
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#define SNMPV3_MAX_PNUM_ELEMS 4 // 4 * 4 = 16 > 9
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typedef struct hmac_md5_tmp
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{
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u32 tmp[SNMPV3_TMP_ELEMS];
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u32 h[SNMPV3_HASH_ELEMS];
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} hmac_md5_tmp_t;
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typedef struct snmpv3
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{
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u32 salt_buf[SNMPV3_MAX_SALT_ELEMS];
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u32 salt_len;
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u32 engineID_buf[SNMPV3_MAX_ENGINE_ELEMS];
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u32 engineID_len;
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u32 packet_number[SNMPV3_MAX_PNUM_ELEMS];
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} snmpv3_t;
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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 (snmpv3_t);
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return esalt_size;
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}
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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)
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{
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const u64 tmp_size = (const u64) sizeof (hmac_md5_tmp_t);
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return tmp_size;
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}
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u32 module_kernel_loops_min (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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// we need to fix iteration count to guarantee the loop count is a multiple of 64
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// 2k calls to md5_transform typically is enough to overtime pcie bottleneck
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const u32 kernel_loops_min = 2048 * 64;
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return kernel_loops_min;
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}
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u32 module_kernel_loops_max (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 u32 kernel_loops_max = 2048 * 64;
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return kernel_loops_max;
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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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snmpv3_t *snmpv3 = (snmpv3_t *) esalt_buf;
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token_t token;
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token.token_cnt = 5;
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token.signatures_cnt = 1;
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token.signatures_buf[0] = SIGNATURE_SNMPV3;
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token.len[0] = 10;
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token.attr[0] = TOKEN_ATTR_FIXED_LENGTH
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| TOKEN_ATTR_VERIFY_SIGNATURE;
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// packet number
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token.len_min[1] = 1;
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token.len_max[1] = 8;
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token.sep[1] = '$';
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token.attr[1] = TOKEN_ATTR_VERIFY_LENGTH
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| TOKEN_ATTR_VERIFY_DIGIT;
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// salt
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token.len_min[2] = 12 * 2;
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token.len_max[2] = SNMPV3_SALT_MAX * 2;
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token.sep[2] = '$';
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token.attr[2] = TOKEN_ATTR_VERIFY_LENGTH
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| TOKEN_ATTR_VERIFY_HEX;
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// engineid
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token.len_min[3] = 5;
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token.len_max[3] = SNMPV3_ENGINEID_MAX;
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token.sep[3] = '$';
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token.attr[3] = TOKEN_ATTR_VERIFY_LENGTH;
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// digest
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token.len_min[4] = SNMPV3_MSG_AUTH_PARAMS_MAX * 2;
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token.len_max[4] = SNMPV3_MSG_AUTH_PARAMS_MAX * 2;
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token.sep[4] = '$';
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token.attr[4] = TOKEN_ATTR_VERIFY_LENGTH
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| TOKEN_ATTR_VERIFY_HEX;
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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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// packet number
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const u8 *packet_number_pos = token.buf[1];
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const int packet_number_len = token.len[1];
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memset (snmpv3->packet_number, 0, sizeof (snmpv3->packet_number));
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strncpy ((char *) snmpv3->packet_number, (char *) packet_number_pos, packet_number_len);
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// salt
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const u8 *salt_pos = token.buf[2];
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const int salt_len = token.len[2];
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u8 *salt_ptr = (u8 *) snmpv3->salt_buf;
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snmpv3->salt_len = hex_decode (salt_pos, salt_len, salt_ptr);
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salt->salt_iter = SNMPV3_ROUNDS;
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// handle unique salts detection
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md5_ctx_t md5_ctx;
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md5_init (&md5_ctx);
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md5_update (&md5_ctx, snmpv3->salt_buf, snmpv3->salt_len);
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md5_final (&md5_ctx);
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// store md5(snmpv3->salt_buf) in salt_buf
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salt->salt_len = 16;
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memcpy (salt->salt_buf, md5_ctx.h, salt->salt_len);
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// engineid
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const u8 *engineID_pos = token.buf[3];
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const int engineID_len = token.len[3];
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u8 *engineID_ptr = (u8 *) snmpv3->engineID_buf;
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snmpv3->engineID_len = hex_decode (engineID_pos, engineID_len, engineID_ptr);
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// digest
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const u8 *hash_pos = token.buf[4];
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digest[0] = hex_to_u32 (hash_pos + 0);
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digest[1] = hex_to_u32 (hash_pos + 8);
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digest[2] = hex_to_u32 (hash_pos + 16);
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digest[3] = 0;
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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 u32 *digest = (const u32 *) digest_buf;
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snmpv3_t *snmpv3 = (snmpv3_t *) esalt_buf;
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u8 *out_buf = (u8 *) line_buf;
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int out_len = snprintf (line_buf, line_size, "%s%s$", SIGNATURE_SNMPV3, (char *) snmpv3->packet_number);
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out_len += hex_encode ((u8 *) snmpv3->salt_buf, snmpv3->salt_len, out_buf + out_len);
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out_buf[out_len] = '$';
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out_len++;
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out_len += hex_encode ((u8 *) snmpv3->engineID_buf, snmpv3->engineID_len, out_buf + out_len);
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out_buf[out_len] = '$';
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out_len++;
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u32_to_hex (digest[0], out_buf + out_len); out_len += 8;
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u32_to_hex (digest[1], out_buf + out_len); out_len += 8;
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u32_to_hex (digest[2], out_buf + out_len); out_len += 8;
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out_buf[out_len] = 0;
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return out_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_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_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_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_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;
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module_ctx->module_hook_salt_size = MODULE_DEFAULT;
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module_ctx->module_hook_size = MODULE_DEFAULT;
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module_ctx->module_jit_build_options = MODULE_DEFAULT;
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module_ctx->module_jit_cache_disable = MODULE_DEFAULT;
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module_ctx->module_kernel_accel_max = MODULE_DEFAULT;
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module_ctx->module_kernel_accel_min = MODULE_DEFAULT;
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module_ctx->module_kernel_loops_max = module_kernel_loops_max;
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module_ctx->module_kernel_loops_min = module_kernel_loops_min;
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module_ctx->module_kernel_threads_max = MODULE_DEFAULT;
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module_ctx->module_kernel_threads_min = MODULE_DEFAULT;
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module_ctx->module_kern_type = module_kern_type;
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module_ctx->module_kern_type_dynamic = MODULE_DEFAULT;
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module_ctx->module_opti_type = module_opti_type;
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module_ctx->module_opts_type = module_opts_type;
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module_ctx->module_outfile_check_disable = MODULE_DEFAULT;
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module_ctx->module_outfile_check_nocomp = MODULE_DEFAULT;
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module_ctx->module_potfile_custom_check = MODULE_DEFAULT;
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module_ctx->module_potfile_disable = MODULE_DEFAULT;
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module_ctx->module_potfile_keep_all_hashes = MODULE_DEFAULT;
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module_ctx->module_pwdump_column = MODULE_DEFAULT;
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module_ctx->module_pw_max = MODULE_DEFAULT;
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module_ctx->module_pw_min = MODULE_DEFAULT;
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module_ctx->module_salt_max = MODULE_DEFAULT;
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module_ctx->module_salt_min = MODULE_DEFAULT;
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module_ctx->module_salt_type = module_salt_type;
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module_ctx->module_separator = MODULE_DEFAULT;
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module_ctx->module_st_hash = module_st_hash;
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module_ctx->module_st_pass = module_st_pass;
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module_ctx->module_tmp_size = module_tmp_size;
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module_ctx->module_unstable_warning = MODULE_DEFAULT;
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module_ctx->module_warmup_disable = MODULE_DEFAULT;
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}
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