GET it right

A pretty hard one, but fun.

tip for general wireshark usage: statistics --> protocol hierarchy

Hint: QVlZIEJSTyBZT1UgR09UIFRISVM

grate task better when server something show

Nice Challenge, learn some basics on wireshark and you will get the flag

Im stuck after finding the apache server?

Clue: Who wants to know?

i just solved it with manual filter, but i have one question. how we know when filter to http or udp or tcp or etc? where's found this clue?

you should read some networking stuff

HTTP is the application level protocol, so this can contain the meaningful information for us. In contrast, TCP/UDP chunks that information and create packets which is not very meaningful. As in this case you're looking for a flag, it's only possible that application layer protocols will contain the whole information.

Thank you, this comment was really helpful!

Hint: QVlZIEJSTyBZT1UgR09UIFRISVM

search http protocol and find parameter GET with msg

Quite hard, but doable (but not easy, at least medium IMO) Hint1: TG9hZCB0aGUgZG93bmxvYWRlZCBmaWxlIGluIHdpcmVzaGFyaw== Hint2: TG9vayBmb3IgR0VUIHBhY2thZ2VzIChwYXkgYXR0ZW50aW9uIHRvIHRoZSBtZXNzYWdlcykg Hint 3: VGhlIG1lc3NhZ2UgaXMgQmFzZTY0IGVuY29kZWQ=

thanks found it