All you can do is infer the result of your query. Also, usually, there is no chance to execute shell commands or to read/write a file. Generally, you find an SQL injection in a parameter where no union query is possible. Blind SQL Injection testingīlind SQL Injection vulnerabilities are by no means the most frequent type of vulnerability that you will find. For other functions please refer to References. Some of these functions will be used to exploit a blind SQL injection as we see in the next paragraph. For example the following query SELECT last(*) FROM users will return only the last row of the result. LAST: This function is used to select only the last row of a set of rows.For example TOP 1 will return only 1 row. TOP: This function allows you to specify the maximum number of results that the query should return from the top.MID: This function allows you to extract substring, for example the following statement mid(‘abc’,1,1) return ‘a’.IIF: Is the IF construct, for example the following statement IIF(1=1, ‘a’, ‘b’) return ‘a’.
LEN: Return the length of the string passed as parameter. CHR: Obtain the character of the ASCII value passed as input. ASC: Obtain the ASCII value of a character passed as input. There are also some functions that can be useful to exploit custom queries. These are the main steps that you can use to exploit a SQL injection vulnerability on MS Access. The names of these table are:įor example, if a union SQL injection vulnerability exists, you can use the following query: ' UNION SELECT Name FROM MSysObjects WHERE Type = 1%00 In the default configuration these tables are not accessible, however it’s possible to try it. Various tables exist in MS Access that can be used to obtain the name of a table in a particular database. If we don’t know the name of at least one attribute, we can insert a fictitious column name, and, just like by magic, we obtain the name of the first attribute. We iterate the method until we obtain the name of all the attributes. In the error message received we can see that the name of the next attribute is shown. For example, if we know the existence of a parameter because we got it by an error message due to the ‘ character, we can also know the name of the remaining attributes with the following query: ' GROUP BY Id%00 In short, we can obtain the name of the attributes by error messages. In order to enumerate the attributes of a query, it is possible to use the same method used for the database MS SQL Server. We can truncate the query with the following two URLs: '%00&pass=foo '%16&pass=foo Attributes enumeration So if we have the following query: SELECT, FROM users WHERE ='$myUsername' AND ='$myPassword' The character is 0x16 (%16 in URL encoded format) or 22 in decimal. We can notice that there is another value that can be used in order to truncate the query. However, the NULL character can sometimes cause troubles. That happens because, internally, strings are NULL terminated. If we insert the char %00 at some place in the query, all the remaining characters after the NULL are ignored. On the other hand, we can fortunately bypass this limit with the NULL character. Unfortunately, MS Access doesn’t support any comment character in the SQL query, so it is not possible to use the trick of inserting the characters /* or - or # to truncate the query. That means that maybe we are testing an application with an MS Access Database backend. 
Black Box testing and example Standard Testįirst of all, let’s show a typical example of SQL error that can encounter when a test is executed: Fatal error: Uncaught exception 'com_exception' with message ' Source: Microsoft JET Database Engine After an initial introduction on the typical functions that are useful to exploit a SQL Injection vulnerability, a method to exploit Blind SQL Injection will be discussed.
#HOW TO FIND USER ID AND PSID CONSOLE BRUTEFORCE SAVEDATA HOW TO#
In particular, the article focuses on how to exploit Blind SQL Injection. This method was patched by Sony though.This article describes how to exploit SQL Injection vulnerabilities when the backend database is MS Access. F*ckPSN) to avoid console ban or to return on PSN with a banned console. Or NP Account ID in case 00's could mean all accountsĮxample of use for Console ID instead of PSID for consolebans: File:PSN BAN.png 32byte (0x20) sequence, in flash at offset 0x80870+0x81BD0 (NAND) / 0x303D0 (NOR), seems to be based on IDPS followed by PSID Name
0 kommentar(er)
