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https://github.com/hashcat/hashcat.git
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Convert cisco4_parse_hash() to make use of input_tokenizer()
Convert lm_parse_hash() to make use of input_tokenizer()
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2abe8caf24
commit
5f83dd8620
@ -14,8 +14,8 @@ size_t exec_unhexify (const u8 *in_buf, const size_t in_len, u8 *out_buf, const
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bool need_hexify (const u8 *buf, const size_t len, const char separator, bool always_ascii);
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void exec_hexify (const u8 *buf, const size_t len, u8 *out);
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bool is_valid_bf64_string (const u8 *s, const size_t len);
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bool is_valid_bf64_char (const u8 c);
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bool is_valid_base64_string (const u8 *s, const size_t len);
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bool is_valid_base64_char (const u8 c);
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bool is_valid_hex_string (const u8 *s, const size_t len);
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bool is_valid_hex_char (const u8 c);
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@ -688,7 +688,7 @@ typedef enum token_attr
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TOKEN_ATTR_SIGNATURE = 1 << 0,
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TOKEN_ATTR_FIXED_LENGTH = 1 << 1,
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TOKEN_ATTR_ENCODED_HEX = 1 << 2,
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TOKEN_ATTR_ENCODED_BF64 = 1 << 3,
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TOKEN_ATTR_ENCODED_BASE64 = 1 << 3,
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TOKEN_ATTR_VERIFY_LENGTH = 1 << 4,
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} token_attr_t;
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@ -215,18 +215,30 @@ void exec_hexify (const u8 *buf, const size_t len, u8 *out)
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out[max_len * 2] = 0;
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}
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bool is_valid_bf64_string (const u8 *s, const size_t len)
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bool is_valid_base64_string (const u8 *s, const size_t len)
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{
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for (size_t i = 0; i < len; i++)
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{
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const u8 c = s[i];
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if (is_valid_bf64_char (c) == false) return false;
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if (is_valid_base64_char (c) == false) return false;
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}
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return true;
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}
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bool is_valid_base64_char (const u8 c)
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{
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if ((c >= '0') && (c <= '9')) return true;
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if ((c >= 'A') && (c <= 'Z')) return true;
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if ((c >= 'a') && (c <= 'z')) return true;
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if (c == '.') return true;
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if (c == '/') return true;
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return false;
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}
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bool is_valid_hex_string (const u8 *s, const size_t len)
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{
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for (size_t i = 0; i < len; i++)
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@ -239,18 +251,6 @@ bool is_valid_hex_string (const u8 *s, const size_t len)
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return true;
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}
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bool is_valid_bf64_char (const u8 c)
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{
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if ((c >= '0') && (c <= '9')) return true;
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if ((c >= 'A') && (c <= 'Z')) return true;
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if ((c >= 'a') && (c <= 'z')) return true;
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if (c == '.') return true;
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if (c == '/') return true;
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return false;
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}
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bool is_valid_hex_char (const u8 c)
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{
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if ((c >= '0') && (c <= '9')) return true;
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@ -2503,9 +2503,9 @@ static int input_tokenizer (u8 *input_buf, int input_len, token_t *token)
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if (token->len[token_idx] > token->len_max[token_idx]) return (PARSER_TOKEN_LENGTH);
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}
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if (token->attr[token_idx] & TOKEN_ATTR_ENCODED_BF64)
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if (token->attr[token_idx] & TOKEN_ATTR_ENCODED_BASE64)
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{
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if (is_valid_bf64_string (token->buf[token_idx], token->len[token_idx]) == false) return (PARSER_TOKEN_ENCODING);
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if (is_valid_base64_string (token->buf[token_idx], token->len[token_idx]) == false) return (PARSER_TOKEN_ENCODING);
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}
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if (token->attr[token_idx] & TOKEN_ATTR_ENCODED_HEX)
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@ -2686,11 +2686,11 @@ int bcrypt_parse_hash (u8 *input_buf, u32 input_len, hash_t *hash_buf, MAYBE_UNU
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token.len[2] = 22;
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token.attr[2] = TOKEN_ATTR_FIXED_LENGTH
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| TOKEN_ATTR_ENCODED_BF64;
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| TOKEN_ATTR_ENCODED_BASE64;
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token.len[3] = 31;
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token.attr[3] = TOKEN_ATTR_FIXED_LENGTH
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| TOKEN_ATTR_ENCODED_BF64;
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| TOKEN_ATTR_ENCODED_BASE64;
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const int rc_tokenizer = input_tokenizer (input_buf, input_len, &token);
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@ -2741,13 +2741,27 @@ int bcrypt_parse_hash (u8 *input_buf, u32 input_len, hash_t *hash_buf, MAYBE_UNU
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int cisco4_parse_hash (u8 *input_buf, u32 input_len, hash_t *hash_buf, MAYBE_UNUSED hashconfig_t *hashconfig)
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{
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if ((input_len < DISPLAY_LEN_MIN_5700) || (input_len > DISPLAY_LEN_MAX_5700)) return (PARSER_GLOBAL_LENGTH);
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u32 *digest = (u32 *) hash_buf->digest;
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token_t token;
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token.token_cnt = 1;
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token.len_min[0] = 43;
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token.len_max[0] = 43;
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token.attr[0] = TOKEN_ATTR_VERIFY_LENGTH
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| TOKEN_ATTR_ENCODED_BASE64;
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const int rc_tokenizer = input_tokenizer (input_buf, input_len, &token);
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if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);
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u8 *hash_pos = token.buf[0];
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int hash_len = token.len[0];
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u8 tmp_buf[100] = { 0 };
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base64_decode (itoa64_to_int, (const u8 *) input_buf, 43, tmp_buf);
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base64_decode (itoa64_to_int, (const u8 *) hash_pos, hash_len, tmp_buf);
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memcpy (digest, tmp_buf, 32);
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@ -2777,22 +2791,32 @@ int cisco4_parse_hash (u8 *input_buf, u32 input_len, hash_t *hash_buf, MAYBE_UNU
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int lm_parse_hash (u8 *input_buf, u32 input_len, hash_t *hash_buf, MAYBE_UNUSED hashconfig_t *hashconfig)
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{
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if ((input_len < DISPLAY_LEN_MIN_3000) || (input_len > DISPLAY_LEN_MAX_3000)) return (PARSER_GLOBAL_LENGTH);
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u32 *digest = (u32 *) hash_buf->digest;
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if (is_valid_hex_string (input_buf, 16) == false) return (PARSER_HASH_ENCODING);
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token_t token;
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digest[0] = hex_to_u32 ((const u8 *) &input_buf[ 0]);
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digest[1] = hex_to_u32 ((const u8 *) &input_buf[ 8]);
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token.token_cnt = 1;
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token.len_min[0] = 16;
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token.len_max[0] = 16;
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token.attr[0] = TOKEN_ATTR_VERIFY_LENGTH
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| TOKEN_ATTR_ENCODED_HEX;
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const int rc_tokenizer = input_tokenizer (input_buf, input_len, &token);
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if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);
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u8 *hash_pos = token.buf[0];
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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] = 0;
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digest[3] = 0;
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u32 tt;
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IP (digest[0], digest[1], tt);
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digest[2] = 0;
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digest[3] = 0;
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return (PARSER_OK);
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}
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