Hacking Cookies

Using Burp to Hack Cookies and Manipulate Sessions


In the first place, guarantee that Burp is accurately arranged with your browser.With catch killed in the Proxy "Block" tab, visit the login page of the application you are trying in your program.



Sign in to the application you are testing.You can sign in utilizing the qualifications user:user.


Come back to Burp.In the Proxy "Catch" tab, guarantee "Block is on".
Refresh the page in your browser.The request will be captured by Burp, it can be viewed in the Proxy "Intercept" tab.Cookies can be viewed in the cookie header.


We now need to investigate and edit each individual cookie.Right click anywhere on the request and click "Send to Repeater".Note: You can also send requests to Repeater via the context menu in any location where HTTP requests are shown, such as the site map or Proxy history.


Go to the Repeater tab.The cookies in the request can be edited easily in the "Params" tab.


By removing cookies from the request we can ascertain the function of each cookie.In this example, if the "username", "uid" and "PHPSESSID" cookies are removed, the session is ended and the user is logged out of the application.We can use the Repeater to remove cookies and test the response from the server.Remove and add cookies using the "Add" and "Remove" buttons and use the "Go" button to forward requests to the server.


Cookies can be edited in the Request "Params" table.In this example we have altered the value of the "uid" cookie to 1.Alter the value then click the "Go" button.

The response from the server can be viewed in the "Response" panel in Repeater.The response shows that by altering the "uid" cookie we have logged in to the application as "admin".We have used cookies to manipulate the session and access another account with elevated privileges.



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