In this post short and simple, will detail the steps we will when we need to exploit a SQL Injection vulnerability, which are mostly based on some servers SQL Server and Oracle. These vulnerabilities are typical in LOGIN'S Administrative, because as we know, that when we enter the username and password this data is sent via the POST method, so there may be the possibility of entering false or some bypasses, this we can show an error that allows us to identify the vulnerability can be exploited so SqlMap running an automated using commands to send the request to POST and not GET as "usual".
If I did not explain well, for the few wise words! then no more bluntly, we take action!
We have an ASP LOGIN, which do not have the correct data or anything like that, since we have not found any vulnerability on a server that gives us this data, therefore we are curious and intelligent as we started testing false data and some bypasses as famosillo 'or '1' = '1 as shown in the following image:







