February 2018
Beginner to intermediate
426 pages
10h 25m
English
book
Web Penetration Testing with Kali Linux - Third Edition
by Daniel W. Dieterle, Gilberto Najera-Gutierrez, Juned Ahmed Ansari
Content preview from Web Penetration Testing with Kali Linux - Third Edition
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Direct object references in web services
Web services, especially REST services, often reference database elements using their identifiers in the URL. If these identifiers are sequential and authorization checks are not properly done, it may be possible to enumerate all of the elements just by increasing or decreasing the identifier.
For example, let's say that we log in to a banking application and then call to the API to request our personal profile. This request looks something like the following:
https://bankingexample.com/client/234752879
The information is returned in JSON format, which is formatted and displayed on the client's browser:
{ "id": "234752879", "client_name": "John", "client_surname": "Doe", "accounts": [{"acc_number":"123456789","balance":1000}, ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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