Web of Lies

• 98 Points / 79 Solves

• Overall difficulty for me (From 1-10 stars): ★★★★★★★★★☆

Background

We found more weird traffic. We’re concerned he’s connected to a web of underground criminals.

Find the flag

In this challenge, we can download a file:

┌[siunam♥earth]-(~/ctf/RITSEC-CTF-2023/Forensics/Web-of-Lies)-[2023.04.02|13:34:41(HKT)]
└> file weboflies.pcapng 
weboflies.pcapng: pcapng capture file - version 1.0

It’s a packet capture file!

We can open it via WireShark:

┌[siunam♥earth]-(~/ctf/RITSEC-CTF-2023/Forensics/Web-of-Lies)-[2023.04.02|13:34:42(HKT)]
└> wireshark weboflies.pcapng

In “Statistcs” -> “Protocol Hierarchy”, we can view which protocol is being captured:

As you can see, it has some HTTP packets.

Let’s “Follow HTTP Stream”!

Hmm… “Flag’s not here”.

In WireShark, we can export all the HTTP object via:

Then cat all of them:

┌[siunam♥earth]-(~/ctf/RITSEC-CTF-2023/Forensics/Web-of-Lies/http)-[2023.04.02|13:42:59(HKT)]
└> cat *              
Flag Not Found
[...]
Flag's not here
[...]

Umm… All of them are not the real flag…

After fumbling around, I still don’t know what can I do with those packets…