You might see a check like if (req.body.user === 'admin') , which can be bypassed if user is passed as an array ['guest', 'admin'] . 🛠️ Exploitation Steps Step 1: Analyze the Authentication
Analyze the provided source code (often distributed in parts like .part4.rar ) to find a vulnerability that allows for Flag retrieval. 🔍 Investigation 1. File Context BKPF23WEB18.part4.rar
If the key is "hardcoded" or "leaked," you can forge an admin session. Step 2: Path Traversal or SSRF You might see a check like if (req
Many of these challenges require reaching an internal "Metadata" service or a local file. Check for functions like fetch() or os.path.join() . ?file=../../../../flag.txt Step 3: Extracting the Flag BKPF23WEB18.part4.rar