Mobile Network Assessment Tools

h2. Overview

This is a collection of tools for the assessment of mobile network security.

It includes:

* *[[SIMtester]]*

Finds configuration bugs in SIM cards

* *[[GSMmap-apk]]*

Android application that collects 2G and 3G network traces from Samsung Galaxy phones

* *[[xgoldscanner]]*

Linux application that collects 2G and 3G network traces from Samsung Galaxy phones

* *[[catcher catcher]]*

Collect evidence of 2G fake base station activity (requires Osmocom phone)

The tools are included in the *GSMmap-live* system, which auto-submits data for analysis at "GSMmap.org":https://GSMmap.org

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h2. SIMtester

Assess SIM card security in two dimensions:

* *Cryptanalytic attack surface.* Collect cryptographic signatures and encryptions of known plaintexts

* *Application attack surface.* Generate a list of all application identifiers (TAR) and find "unprotected" (NSL=0) applications

h3. Requirements:

* Java (TODO: Which Java edition/version?)

* PC/SC reader –or–

* Osmocom phone

h3. Download

Pre-compiled .jar TODO

Source Code TODO

Live System TODO

h3. Instructions

# Download

# unpack

# run: TODO call

* TODO command line parameters

h3. Mailing list

A public mailing list for announcements and discussion can be found "here":https://lists.srlabs.de/cgi-bin/mailman/listinfo/simsec

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h2. xgoldscanner

Actively collect 2G and 3G traces using Samsung Android phones.

Log files can be analyzed with Tobias Engel's "xgoldmon":https://github.com/2b-as/xgoldmon tool, which heavily inspired the development of xgoldscanner.

h3. Requirements:

* Samsung Galaxy S2 / S3  phone

* Micro-USB cable

* Linux Computer

h3. Download:

* Source Code (bash)

* Live System

h3. Disclaimer

The active tests include an active part. First, your phone will place outgoing calls

to a dedicated number. This number will always be busy and never answer in order

to rule out voice charges as best as we can.

Secondly, your phone will send SMS short messages via an invalid SMS-C to

an invalid number.

During our tests we have not found a European network that charges for these

transactions. However, we can not rule out that you may be charged in specific

settings.

To control for involuntary charges, we strongly advise the use of a dedicated

pre-paid SIM card for these tests.

h3. Instructions

# Download

# unpack

# run:  <pre>sudo ./xgoldscanner.sh -n [telephone number, e.g. +491234567]</pre>

Optional parameters:

*  -g  conduct GPRS test

*  -d  display debug messages

*  -o  offline mode [skip log upload for manual submission]

*  -3  conduct 3G tests only [skip 2G tests]

*  -y  assume "yes" to questions and confirmation dialogues [for automated testing]

*  -i  <n> repeat each test <n> times (default is 5)

h3. Advanced usage

Use Tobias Engel's "xgoldmon":https://github.com/2b-as/xgoldmon tool to analyze log files.

h3. Mailing list

A public mailing list for announcements and discussion can be found TODO  "here":http://lists.srlabs.de/cgi-bin/mailman/listinfo/a51 .

Please file bugs and support requests through the "issue tracker TODO ":http://opensource.srlabs.de/projects/a51-decrypt/issues/new as they may be of little relevance to the majority of the mailing list subscribers.

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h2. catcher catcher

Display mobile network irregularities hinting at fake base station activity.

h3. Requirements:

* Osmocom phone

* Osmocom serial cable

* Linux Computer

h3. Download:

* Source Code

* Live System

h3. Instructions

# Download

# unpack

# run: TODO call

* TODO command line parameters

h3. Mailing list

A public mailing list for announcements and discussion can be found TODO  "here":http://lists.srlabs.de/cgi-bin/mailman/listinfo/a51 .

Please file bugs and support requests through the "issue tracker TODO ":http://opensource.srlabs.de/projects/a51-decrypt/issues/new as they may be of little relevance to the majority of the mailing list subscribers.

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h2. GSMmap-apk

Actively collect 2G and 3G traces using Samsung Android phones.

h3. Requirements:

* Samsung Galaxy S2 / S3 phone

h3. Download:

* Pre-compiled .apk

* Source Code

h3. Disclaimer

Our 3G tests include an active part. First, your phone will place outgoing calls

to a dedicated number. This number will always be busy and never answer in order

to rule out voice charges as best as we can.

Secondly, your phone will send SMS short messages via an invalid SMS-C to

an invalid number.

During our tests we have not found a European network that charges for these

transactions. However, we can not rule out that you may be charged in specific

settings.

To control for involuntary charges, we strongly advise the use of a dedicated

pre-paid SIM card for these tests.

h3. Instructions

# Install application from App Store

# Run

h3. Mailing list

A public mailing list for announcements and discussion can be found TODO  "here":http://lists.srlabs.de/cgi-bin/mailman/listinfo/a51 .

Please file bugs and support requests through the "issue tracker TODO ":http://opensource.srlabs.de/projects/a51-decrypt/issues/new as they may be of little relevance to the majority of the mailing list subscribers.

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h2. GSMmap-live

This live linux system is equipped with all the assessment tools listed above. It furthermore includes

It facilitates their use and automatically uploads logs to GSMmap.org.

h3. Requirements:

* 64bit-compatible Computer

* For each test: Requirements listed above

h3. Download:

* Live system image

* Source Code

h3. Disclaimer

Our 3G tests include an active part. First, your phone will place outgoing calls

to a dedicated number. This number will always be busy and never answer in order

to rule out voice charges as best as we can.

Secondly, your phone will send SMS short messages via an invalid SMS-C to

an invalid number.

During our tests we have not found a European network that charges for these

transactions. However, we can not rule out that you may be charged in specific

settings.

To control for involuntary charges, we strongly advise the use of a dedicated

pre-paid SIM card for these tests.

h3. Instructions

# Download

# Unpack: <pre>tar xvzf gsmmap-live.img.tar.gz</pre>

# Write to stick <pre>dd if=gsmmap-live.img of=/dev/[USB-stick] [bs=1M]</pre>

# Boot from stick

h3. Mailing list

A public mailing list for announcements and discussion can be found TODO  "here":http://lists.srlabs.de/cgi-bin/mailman/listinfo/a51 .

Please file bugs and support requests through the "issue tracker TODO ":http://opensource.srlabs.de/projects/a51-decrypt/issues/new as they may be of little relevance to the majority of the mailing list subscribers.