February 2019
Beginner to intermediate
366 pages
7h 49m
English
Some applications use predictable logins, meaning that it is possible for a malicious user to guess the next or the previous username registered. For example, imagine that an online bank uses the account number as the username for its application; a malicious user can create a list of possible account numbers, that are mostly sequential to guess the username.
A great tool to detect this kind of vulnerability is Intruder, which is in the Payloads section and has an option to create a sequential list, as shown in the following screenshot:

Also, it is possible to create sequential dates, and there is even ...
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