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README.md
Payload
No description.
About the Challenge
We have been given a website that has a button to give us a detail about the system
How to Solve?
When I want to check the source code, trying every single thing on the btn parameter. The result is nothing. And then I decided to test some interesting endpoint like .git or robots.txt. And then there is a source code when I open robots.txt
As you can see, we can execute an OS command using the cmd parameter. And then read index.php file to obtain the flag or we can execute the env command to retrieve the flag from environtment variables
VishwaCTF{y0u_f-o-u-n-d_M3}