Challenge 1: Web page source code modification

In this challenge, three different stage are involved and participants have to conquer all the three problems to get the flag.

Stage 1: Inspect the page source code

Directly modify the source code of the website

Stage 2: Decode and change session value

First Run function in javascript to decode the cypher string

Then modify the session value based on the paintext

Stage 3: Change user agaent

Find the new user agaent and send cooresponding HTTP request to the server

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