Timestamps and weird emails— A solution for Intigriti’s 0321 challenge

Intercepting the request with Burp Suite
In addition to quoting using the backslash character, conventional double-quote characters may be used to surround strings. For example

"Abc@def"@example.com

"Fred Bloggs"@example.com
Payload: “id=’x’tabindex=’1'onfocus=’alert(flag.innerText)’”@a.b

Let’s bypass the CSRF protection

Ok, now it’s time to bypass the CSRF protection. Looking at the source of the page, we get an important hint:

md5(time())

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