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Merge pull request #3017 from Chick3nman/master

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Add Signature matching for mac2john format
This commit is contained in:
Jens Steube 2021-11-05 13:21:39 +01:00 committed by GitHub
commit 4bafdfc3e6
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 177 additions and 64 deletions
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1
docs/changes.txt
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@ -139,6 +139,7 @@
- Status view: Add hash-mode (-m number) in addition to hash-name
- Vendor Discovery: Add "Intel" as a valid vendor name for GPUs on macOS
- MetaMask: Increase the supported data len from 784b to 3136b and set pw-min to 8
- MacOS v10.8+ (PBKDF2-SHA512): Added support for parsing mac2john hash format
* changes v6.2.2 -> v6.2.3

112
src/modules/module_07100.c
View File

@ -61,6 +61,8 @@ typedef struct pbkdf2_sha512_tmp
static const char *SIGNATURE_SHA512MACOS = "$ml$";
static const char *SIGNATURE_SHA512MACOS_JOHN = "$pbkdf2-hmac-sha512$";
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 (pbkdf2_sha512_tmp_t);
@ -97,6 +99,12 @@ int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
pbkdf2_sha512_t *pbkdf2_sha512 = (pbkdf2_sha512_t *) esalt_buf;
char sigchk[21];
sigchk[20] = '\0';
memcpy (sigchk, line_buf, 20);
if (strncmp (sigchk, SIGNATURE_SHA512MACOS, 4) == 0)
{
token_t token;
token.token_cnt = 4;
@ -182,6 +190,110 @@ int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
return (PARSER_OK);
}
if (strncmp (sigchk, SIGNATURE_SHA512MACOS_JOHN, 20) == 0)
{
token_t token;
token.token_cnt = 7;
token.signatures_cnt = 1;
token.signatures_buf[0] = SIGNATURE_SHA512MACOS_JOHN;
token.len[0] = 20;
token.attr[0] = TOKEN_ATTR_FIXED_LENGTH
| TOKEN_ATTR_VERIFY_SIGNATURE;
token.len_min[1] = 1;
token.len_max[1] = 6;
token.sep[1] = '.';
token.attr[1] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_DIGIT;
token.len_min[2] = 64;
token.len_max[2] = 64;
token.sep[2] = '.';
token.attr[2] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
token.len_min[3] = 128;
token.len_max[3] = 256;
token.sep[3] = ':';
token.attr[3] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
token.len_min[4] = 0;
token.len_max[4] = 16;
token.sep[4] = ':';
token.attr[4] = TOKEN_ATTR_VERIFY_LENGTH;
token.len_min[5] = 0;
token.len_max[5] = 16;
token.sep[5] = ':';
token.attr[5] = TOKEN_ATTR_VERIFY_LENGTH;
token.len_min[6] = 0;
token.len_max[6] = 32;
token.attr[6] = TOKEN_ATTR_VERIFY_LENGTH;
const int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);
const int hash_len = token.len[3];
if ((hash_len != 128) && (hash_len != 256)) return (PARSER_HASH_LENGTH);
const u8 *hash_pos = token.buf[3];
digest[0] = hex_to_u64 (hash_pos + 0);
digest[1] = hex_to_u64 (hash_pos + 16);
digest[2] = hex_to_u64 (hash_pos + 32);
digest[3] = hex_to_u64 (hash_pos + 48);
digest[4] = hex_to_u64 (hash_pos + 64);
digest[5] = hex_to_u64 (hash_pos + 80);
digest[6] = hex_to_u64 (hash_pos + 96);
digest[7] = hex_to_u64 (hash_pos + 112);
digest[0] = byte_swap_64 (digest[0]);
digest[1] = byte_swap_64 (digest[1]);
digest[2] = byte_swap_64 (digest[2]);
digest[3] = byte_swap_64 (digest[3]);
digest[4] = byte_swap_64 (digest[4]);
digest[5] = byte_swap_64 (digest[5]);
digest[6] = byte_swap_64 (digest[6]);
digest[7] = byte_swap_64 (digest[7]);
const u8 *salt_pos = token.buf[2];
const int salt_len = token.len[2] / 2;
pbkdf2_sha512->salt_buf[0] = hex_to_u32 (salt_pos + 0);
pbkdf2_sha512->salt_buf[1] = hex_to_u32 (salt_pos + 8);
pbkdf2_sha512->salt_buf[2] = hex_to_u32 (salt_pos + 16);
pbkdf2_sha512->salt_buf[3] = hex_to_u32 (salt_pos + 24);
pbkdf2_sha512->salt_buf[4] = hex_to_u32 (salt_pos + 32);
pbkdf2_sha512->salt_buf[5] = hex_to_u32 (salt_pos + 40);
pbkdf2_sha512->salt_buf[6] = hex_to_u32 (salt_pos + 48);
pbkdf2_sha512->salt_buf[7] = hex_to_u32 (salt_pos + 56);
salt->salt_buf[0] = pbkdf2_sha512->salt_buf[0];
salt->salt_buf[1] = pbkdf2_sha512->salt_buf[1];
salt->salt_buf[2] = pbkdf2_sha512->salt_buf[2];
salt->salt_buf[3] = pbkdf2_sha512->salt_buf[3];
salt->salt_buf[4] = pbkdf2_sha512->salt_buf[4];
salt->salt_buf[5] = pbkdf2_sha512->salt_buf[5];
salt->salt_buf[6] = pbkdf2_sha512->salt_buf[6];
salt->salt_buf[7] = pbkdf2_sha512->salt_buf[7];
salt->salt_len = salt_len;
const u8 *iter_pos = token.buf[1];
salt->salt_iter = hc_strtoul ((const char *) iter_pos, NULL, 10) - 1;
return (PARSER_OK);
}
return (PARSER_SIGNATURE_UNMATCHED);
}
/* replaced with OPTS_TYPE_HASH_COPY version
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)