python libraires and command line tools for SIM/UICC/USIM/ISIM card analysis and programming.
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pySim - Read, Write and Browse Programmable SIM/USIM Cards
This repository contains Python programs that can be used
to read, program (write) and browse certain fields/parameters on so-called programmable
SIM/USIM cards.
Such SIM/USIM cards are special cards, which - unlike those issued by
regular commercial operators - come with the kind of keys that allow you
to write the files/fields that normally only an operator can program.
This is useful particularly if you are running your own cellular
network, and want to issue your own SIM/USIM cards for that network.
Homepage and Manual
Please visit the [official homepage]( for usage instructions, manual and examples.
Git Repository
You can clone from the official Osmocom git repository using
git clone git://
There is a cgit interface at <>
Please install the following dependencies:
- pyscard
- serial
- pytlv
- cmd2 >= 1.3.0 but < 2.0.0
- jsonpath-ng
- construct
- bidict
- gsm0338
Example for Debian:
apt-get install python3-pyscard python3-serial python3-pip python3-yaml
pip3 install -r requirements.txt
After installing all dependencies, the pySim applications ````, ```` and ```` may be started directly from the cloned repository.
### Archlinux Package
Archlinux users may install the package ``python-pysim-git``
from the [Arch User Repository (AUR)](
The most convenient way is the use of an [AUR Helper](,
e.g. [yay]( or [pacaur](
The following example shows the installation with ``yay``.
# Install
yay -Sy python-pysim-git
# Uninstall
sudo pacman -Rs python-pysim-git
Mailing List
There is no separate mailing list for this project. However,
discussions related to pysim-prog are happening on the
<> mailing list, please see
<> for subscription
options and the list archive.
Please observe the [Osmocom Mailing List
when posting.
Our coding standards are described at
We are using a gerrit-based patch review process explained at
Usage Examples
* Program customizable SIMs. Two modes are possible:
- one where you specify every parameter manually:
./ -n 26C3 -c 49 -x 262 -y 42 -i <IMSI> -s <ICCID>
- one where they are generated from some minimal set:
./ -n 26C3 -c 49 -x 262 -y 42 -z <random_string_of_choice> -j <card_num>
With ``<random_string_of_choice>`` and ``<card_num>``, the soft will generate
'predictable' IMSI and ICCID, so make sure you choose them so as not to
conflict with anyone. (for e.g. your name as ``<random_string_of_choice>`` and
0 1 2 ... for ``<card num>``).
You also need to enter some parameters to select the device:
-t TYPE : type of card (``supersim``, ``magicsim``, ``fakemagicsim`` or try ``auto``)
-d DEV : Serial port device (default ``/dev/ttyUSB0``)
-b BAUD : Baudrate (default 9600)
* Interact with SIMs from a python interactive shell (e.g. ipython):
from pySim.transport.serial import SerialSimLink
from pySim.commands import SimCardCommands
sl = SerialSimLink(device='/dev/ttyUSB0', baudrate=9600)
sc = SimCardCommands(sl)
# Print IMSI
print(sc.read_binary(['3f00', '7f20', '6f07']))
# Run A3/A8