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Minor optimization

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This commit is contained in:
Miroslav Stampar
2020-01-28 10:01:21 +01:00
parent f38a2c2028
commit f21388d550
2 changed files with 23 additions and 13 deletions
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32
lib/utils/hash.py
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@@ -727,21 +727,31 @@ def attackDumpedTable():
table[column]['length'] = max(table[column]['length'], len(table[column]['values'][i]))
def hashRecognition(value):
"""
>>> hashRecognition("179ad45c6ce2cb97cf1029e212046e81") == HASH.MD5_GENERIC
True
>>> hashRecognition("S:2BFCFDF5895014EE9BB2B9BA067B01E0389BB5711B7B5F82B7235E9E182C") == HASH.ORACLE
True
>>> hashRecognition("foobar") == None
True
"""
retVal = None
isOracle, isMySQL = Backend.isDbms(DBMS.ORACLE), Backend.isDbms(DBMS.MYSQL)
if value and len(value) >= 8 and ' ' not in value: # Note: pre-filter condition (for optimization purposes)
isOracle, isMySQL = Backend.isDbms(DBMS.ORACLE), Backend.isDbms(DBMS.MYSQL)
if isinstance(value, six.string_types):
for name, regex in getPublicTypeMembers(HASH):
# Hashes for Oracle and old MySQL look the same hence these checks
if isOracle and regex == HASH.MYSQL_OLD or isMySQL and regex == HASH.ORACLE_OLD:
continue
elif regex == HASH.CRYPT_GENERIC:
if any((value.lower() == value, value.upper() == value)):
if isinstance(value, six.string_types):
for name, regex in getPublicTypeMembers(HASH):
# Hashes for Oracle and old MySQL look the same hence these checks
if isOracle and regex == HASH.MYSQL_OLD or isMySQL and regex == HASH.ORACLE_OLD:
continue
elif re.match(regex, value):
retVal = regex
break
elif regex == HASH.CRYPT_GENERIC:
if any((value.lower() == value, value.upper() == value)):
continue
elif re.match(regex, value):
retVal = regex
break
return retVal