dCTF 2021: Simple Web
Solving a simple web challenge by changing an authorization parameter in the request.
Original challenge writeup: Simple Web.md
As the name suggests, this one was simple.
Challenge URL: http://dctf1-chall-simple-web.westeurope.azurecontainer.io:8080/
Submitting the form returned:
Not authorized
Looking at the POST request showed this body:
flag=1&auth=0&Submit=Submit
Changing auth from 0 to 1 returned the flag:
There you go: dctf{w3b_c4n_b3_fun_r1ght?}