Bypass File Upload Restrictions using Magic Bytes 

Web applications often check file contents to ensure that only valid files are uploaded to the server. This is a common security measure that may web applicaitons use to prevent users from upoading malicous files to the server.
During this educational video we see how attackers can modify the file content using "magic trick" in order to bypass an insecure file content validation to upload a websell to the web server and get remote code execution.
This video is made ONLY for educational purposes and to help developers and security researchers to enhance their security knowledge. Therefore, allowing them to take robust steps to improve the security of their web applications and protect them against malicious attacks.
Web Security Academy | Lab: Remote code execution via polyglot web shell upload:
portswigger.ne...
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