Using Double URL Encoding to Bypass Security Mechanisms for a Directory Traversal Attack

hey. thanks for your work. I always have troubles understanding some details in portswigger labs since they don't clarify anything, and your videos are of a good help. i recently watched your another video about magic bytes where you hexdump'ed the file and explained that it should be read peculiarly because of the inter processor. where did you learn this? could you recommend me where i could gain knowledge about details like this / overall low-level better understanding.

Great explanation !!

Really appreciate your efforts and time you put into making these tutorials

Amigo gracias por todos tus aportes, recien empieso a mirar estos temas de ciberseguridad y me tienen encanta todo esto. Gracias a tus videos y explicaciones todo se hace mas simple, saludos desde Cuba. My english is very bad lol...

Thanks for your wonderful explanation. I still have a question . This double encoding method will only work if the in server side there is a function that decode it for the second time or it will be considered as a normal text ? Am I right. Also is it the same for base64 encoding?