Wireshark: 802.11 Denial of Service
Views: 8
Bharath Narayanasamy
Analysis with Wireshark
Views: 20TShark VS. Wireshark (Terminal vs. GUI) TShark is a purpose-built terminal tool based on Wireshark. TShark shares many of the same features that are included in Wireshark and even shares syntax and options. TShark is perfect for use on machines with little or no desktop environment and can easily pass the capture information it … Read more
TCPDump
Views: 15Locate tcpdump Install TCPdump Tcpdump Version Validation TCPDump will resolve IPs to hostnames by default. Traffic Captures with Tcpdump Basic Capture Options Switch Command Result D Will display any interfaces available to capture from. i Selects an interface to capture from. ex. -i eth0 n Do not resolve hostnames. nn Do not resolve hostnames … Read more
Elastic SIEM: Developing Dashboards & Visualization
Views: 27Use case 1: Failed Logon Attempts (Disabled Users) Use case 2: Failed Logon Attempts (using Admin Accounts) Use case 3: Successful RDP Logon Related To Service Accounts Use case 4: Users Added Or Removed From A Local Group
SIEM Use cases
Views: 18How To Build SIEM Use Cases Example SIEM Use cases Use case 1: Microsoft Build Engine Started By An Office Application A practical example using the Elastic stack as a SIEM solution to help understand how to map each of the use case points listed above. MSBuild, part of the Microsoft Build Engine, is … Read more
Traffic Analysis Essentials
Views: 11There are two main techniques used in Traffic Analysis: Flow Analysis Packet Analysis Collecting data/evidence from the networking devices. This type of analysis aims to provide statistical results through the data summary without applying in-depth packet-level investigation.Advantage: Easy to collect and analyse.Challenge: Doesn’t provide full packet details to get the root cause of a case. Collecting … Read more
Login Brute Forcing
Views: 14Where to find the passwords/hashes Windows Linux unattend.xml shadow sysprep.inf shadow.bak SAM password Types of Password Attacks Dictionary attack Brute force Traffic interception Man In the Middle Key Logging Social engineering
Understanding Kerberos Authentication
Views: 11Kerberos Authentication krbtgt account -→ KDC Service Account Ticket Details Authorization Data is Microsoft addition to Kerberos; can be manipulated to modify Group membership..etc and launch attacks. Domian Policy about Kerberos settings (default): The Authentication Service (AS) exchange ([RFC4120] section 3.1):<1> The Ticket-Granting Service (TGS) exchange ([RFC4120] section 3.3): The Client/Server Authentication Protocol (AP) exchange ([RFC4120] section … Read more
PowerView Cheat Sheet
Views: 44up-to-date version of PowerView: New function naming schema: Verbs: Get : retrieve full raw data sets Find : ‘find’ specific data entries in a data set Add : add a new object to a destination Set : modify a given object Invoke : lazy catch-all Nouns: Verb-Domain* : indicates that LDAP/.NET querying methods are … Read more
Attacking Kerberos
Views: 21Kerberos Kerberos is the default authentication service for Microsoft Windows domains. It is intended to be more “secure” than NTLM by using third party ticket authorization as well as stronger encryption. Even though NTLM has a lot more attack vectors to choose from Kerberos still has a handful of underlying vulnerabilities just like NTLM … Read more