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Fix base64 padding and hex output format

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- Add proper base64 padding handling
- Update hex output format to match Python example
- Fix byte ordering in hash output
- Improve error handling

Co-Authored-By: SQL master <bnzm5270@gmail.com>
This commit is contained in:
Devin AI 2024-12-13 17:06:19 +00:00
parent 7e8b5c7daa
commit 2b7a728d52
1 changed files with 26 additions and 9 deletions
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35
src/modules/module_33000.c
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@ -77,8 +77,17 @@ int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
const int hash_len = token.len[1];
u8 tmp_buf[100] = { 0 };
u8 padded_input[100] = { 0 };
int padded_len = hash_len;
const int decoded_len = base64_decode (base64_to_int, hash_pos, hash_len, tmp_buf);
// Handle base64 padding if needed
memcpy (padded_input, hash_pos, hash_len);
while (padded_len % 4 != 0)
{
padded_input[padded_len++] = '=';
}
const int decoded_len = base64_decode (base64_to_int, padded_input, padded_len, tmp_buf);
if (decoded_len < 4) return (PARSER_SALT_LENGTH);
@ -97,20 +106,28 @@ int module_hash_encode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
{
const u32 *digest = (const u32 *) digest_buf;
// Format: hash:salt in hex
// Format: hash:salt in hex format matching Python example
char tmp_buf[BLOCK_SIZE] = { 0 };
int offset = 0;
const int hash_len = 16; // MD5 length
const int salt_len = 4; // Salt length
for (int i = 0; i < hash_len / 4; i++)
// Convert hash to hex (16 bytes MD5)
for (int i = 0; i < 16; i++)
{
u8_to_hex ((const u8 *) (digest + i), 4, tmp_buf + (i * 8));
const u8 *ptr = (const u8 *) digest + i;
snprintf (tmp_buf + offset, BLOCK_SIZE - offset, "%02x", *ptr);
offset += 2;
}
tmp_buf[hash_len * 2] = ':';
// Add separator
tmp_buf[offset++] = ':';
u8_to_hex ((const u8 *) salt->salt_buf, salt_len, tmp_buf + (hash_len * 2) + 1);
// Convert salt to hex (4 bytes)
for (int i = 0; i < 4; i++)
{
const u8 *ptr = (const u8 *) salt->salt_buf + i;
snprintf (tmp_buf + offset, BLOCK_SIZE - offset, "%02x", *ptr);
offset += 2;
}
const int out_len = snprintf (line_buf, line_size, "%s", tmp_buf);