Categories
5G SA EPC EUTRAN LTE Mobile Networks RFCs & Standards SDM Security SIM Cards

The PLMN Problem for Private LTE / 5G

As the number of Private Networks built on LTE and 5G grow, how will PLMN allocation be managed?

Categories
5G SA EPC EUTRAN GSM LTE Mobile Networks RFCs & Standards Security

And the call was coming from… INSIDE THE HOUSE. A look at finding UE Locations in LTE

How to find a subscriber location within the network.

Categories
5G SA LTE Mobile Networks Python Security Software

PyHSS New Features

Thanks to some recent developments, PyHSS has had a major overhaul recently, and is getting better than ever, Some features that are almost ready for public release are: Config File Instead of having everything defined all over the place a single YAML config file is used to define how the HSS should function. SCTP Support […]

Categories
Mobile Networks Security SIM Cards

SIM Card Sniffing with Wireshark

Using Wireshark to sniff communication between your computer and Smart Card / SIM Card

Categories
5G SA GSM LTE Mobile Networks RFCs & Standards SDM Security SIM Cards

Confidentiality Algorithms in 3GPP Networks: MILENAGE, XOR & Comp128

A look at the Confidentiality Algorithms used in 3GPP Networks, MILENAGE, XOR & Comp128

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GSM LTE Mobile Networks Security SIM Cards

SIM / Smart Card Deep Dive – Part 3 – APDUs and Hello Card

A look at APDUs and Interacting with Cards

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GSM LTE Mobile Networks Security SIM Cards

SIM / Smart Card Deep Dive – Part 2 – Meet & Greet

The basics of Smart Cards & their File System

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GSM LTE Mobile Networks Security SIM Cards

SIM / Smart Card Deep Dive – Part 1 – Introduction to Smart Cards

Getting up close and personal with Smart Card / SIM Cards

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5G SA Mobile Networks SDM Security SIM Cards

5G Subscriber Identifiers – SUCI & SUPI

Acronyms and cryptography – a look at Subscriber Identifiers in 5G

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Mobile Networks Security SIM Cards

SIM Unlock Shims

What do Unlock SIMs sold online actually do and how do they do it?

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Linux Security

mkcert – Simple Localhost Certs

Using Mkcert to generate valid SSL certificates on your local machine for development

Categories
GSM Mobile Networks RF SDM Security SIM Cards

16 in 1 Magic SIM Card Revisited

Quick look at cheap “Magic SIM Cards”, what they do, how they do it, and the amazing graphics they use.

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Kamailio Security Voice over IP

Kamailio Bytes – SIP over TLS (SIPS)

Using Transport Layer Security (TLS) to protect SIP traffic from modification / manipulation and guarantee message authenticity.

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EPC EUTRAN IMS / VoLTE LTE Mobile Networks SDM Security Voice over IP

VoLTE / IMS – P-CSCF Assignment

How the P-CSCF address is assigned to a UE in Protocol Configuration Options (PCO) during bearer establishment.

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EPC EUTRAN IMS / VoLTE LTE Mobile Networks Security Voice over IP

Using Wireshark to peer inside IPsec ESP VoLTE data from the P-CSCF

Viewing the payload of an Encapsulated Security Payload in Wireshark.

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IMS / VoLTE LTE Mobile Networks Security Software

Reverse Engineering Samsung Sysdump Utils to Unlock IMS Debug & TCPdump on Samsung Phones

Reverse Engineering the Samsung Sysdump app to unlock IMS Debug and TCPdump functions

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EPC EUTRAN IMS / VoLTE LTE Mobile Networks Security Software Voice over IP

VoLTE/IMS Debugging on Samsung Handsets using Sysdump & Samsung IMS Logger

Unlocking the built in IMS Debugging tool in Samsung’s Sysdump Utility

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EPC EUTRAN LTE Mobile Networks Python RFCs & Standards SDM Security Software

PyHSS Update – MongoDB Backend & SQN Resync

Feature Update on PyHSS the Python Home Subscriber Server

Categories
EPC EUTRAN GSM LTE Mobile Networks RFCs & Standards SDM Security SIM Cards

Querying Auth Credentials from USIM/SIM cards

Using osmo-sim-auth to query USIM/SIM cards authentication mechanism.

Categories
EPC EUTRAN LTE Mobile Networks RF SDM Security SIM Cards

HSS & USIM Authentication in LTE/NR (4G & 5G)

Exploring the how and why of Authentication in LTE & NR networks.