killchain-compendium/exploit/web/re_registration.md

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# Re-registration
Let's understand this with the help of an example, say there is an existing user with the name admin and now we want to get access to their account so what we can do is try to re-register that username but with slight modification. We are going to enter " admin"(notice the space in the starting). Now when you enter that in the username field and enter other required information like email id or password and submit that data. It will actually register a new user but that user will have the same right as normal admin. And that new user will also be able to see all the content present under the user admin.
# Usage
* Re-register. The name is taken, that's the point, but alter the string
```
try to register a user name darren, you'll see that user already exists so then try to register a user " darren" and you'll see that you are now logged in and will be able to see the content present only in Darren's account which in our case is the flag that you need to retrieve.
```