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Category Archives: Network Forensics
Wireshark – More Basics
I have been approached recently about explaining some of the fundamentals of how Wireshark can be used. Let’s have a look at some traffic that I captured for a challenge I created recently. Here we can see an example of … Continue reading
Posted in Network Analytics, Network Forensics, Wireshark
Tagged hats off security, Network Forensics, PCAP, Wireshark
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Decrypting Traffic in Wireshark
If you have a HTTPS session captured and are looking at unlocking the secrets that lie within, you are probably looking at Wireshark with eternal optimism hoping that somehow the magical blue fin will answer all of problems…. Sadly that’s … Continue reading
Identifying Sites in Encrypted Traffic
There is some mis-information around; that encrypted traffic is useless, and you should go back to netflow and statistical analysis only. I disagree. I will be doing a few posts showing clear-text information leakage we can use to our advantage. … Continue reading
Posted in Encrypted Traffic, Network Analytics, Network Forensics
Tagged artefact locations, basics, cyber security, hats off security, Network Forensics, PCAP, SSL, TLS
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SMB2 – File/Directory Metadata
Using SMB it is possible to retrieve data that is typically only expected when carrying out host based forensics. The MACB (Modification, Access, Change and Birth) data is sent across regardless of if a file is accessed or not. With … Continue reading
Posted in Network Analytics, Network Forensics, SMB
Tagged hats off security, Network Forensics, SMB
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SMB Tree Connect/Response Details
If you want to play along at home, the sample PCAP I will be using for SMB2+ is here, the SMB v1 PCAP is not something I can give away sadly. Tree Connect Request/Response When the SMB protocol connects to … Continue reading
Posted in Network Analytics, Network Forensics, SMB
Tagged artefact locations, hats off security, SMB, smbv1 vs smbv2
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SMBv2+ SYNC Header Explained
SMB2 Header The SMB2 Header will either be ASYNC or SYNC, you need to look this up from the flags. SYNC is the most common header as this can be in the form of a request or a response, where … Continue reading
Posted in Network Analytics, Network Forensics, SMB
Tagged artefact locations, basics, hats off security, Network Forensics, SMB
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SMB Quick Introduction
SMB There are currently 3 major versions of SMB version 3 is quite new (2012) and has been implemented on the latest versions of Windows (8, 2012), Samba 4.1+ and macOS 10.10 Yosemite. I say ‘quite new’ as it takes … Continue reading
Posted in Network Analytics, Network Forensics, SMB
Tagged basics, hats off security, Network Forensics, SMB
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Unique Usernames!
I recently created a cloud based virtual machine, the purpose of this will be for an HTTP honeypot, but I thought first off I would leave it for a few days to see what happened. This VM has only port … Continue reading
Posted in Attack, Brute force, Network Analytics, Network Forensics, Protocol, SSH
Tagged ssh brute force, username security, usernames
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Ringzer0team – Forensics Challenge 35 – Poor internet connection
This writeup is to explain how to get the answer (flag) to the Forensic Challenge named “Poor Internet Connection” I will not be posting the flag here as I am giving you all of the instructions to get it yourself! … Continue reading
Posted in Competitions, Cyber, Network Analytics, Network Forensics, PCAP Analysis
Tagged file carving, hats off security, hex, Network Forensics, PCAP, pcap carving, Wireshark
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TTLs and where to find them
Recently I have been conducted a lot of interviews for SOC Analysts; one of the questions I ask is as follows: You are reviewing your DNS logs and find an answer to a DNS query which shows rabbitcoldhotel.evil.com on <AnyExternalIP> … Continue reading
Posted in Network Analytics, Network Forensics
Tagged basics, hats off security, Interview Questions, Network Forensics, SOC Analyst
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Hats Off Security 