baseband-devel November 2022

baseband-devel@lists.osmocom.org

5 participants
6 discussions

Start a nNew thread

Engagetted !

by Sébastien Lorquet

http://www.engadget.com/2010/12/29/researchers-eavesdrop-on-encrypted-gsm-c… Congrats!

8 months

Re: New attack ?

by Mychaela Falconia

Bastien Baranoff wrote: > Hello all, the attack : you generate the rainbow tables for each possibles ki > with a given rand set, send this rand (which is not random ;) the phone > respond with sres you make the operation for 3 or 4 rand and meaningly > decrease the possibility of ki. Do you think it is realisable ? Someone please correct me if I'm wrong on this detail, but it is my understanding that no mainstream commercial operator today (outside of personal enthusiast tinkerers in Osmocom and similar communities) issues native 2G SIM cards any more - instead all of their current SIM cards are actually USIM/ISIM, and if GSM 11.11 SIM operation is supported at all, it is only provided as a backward compatibility mode. I reason that these "modern" SIMs must be using Milenage in their native 3G/4G mode, thus their secret key material is not classic Ki, but K/Ki (128 bits) plus OPc (another 128 bits), for a total of 256 bits of secret key material. What happens when these "modern" SIMs are accessed via GSM 11.11 SIM protocol, or when 2G authentication is requested in a USIM session? I find it doubtful that they switch to COMP128 (any version) in this mode, instead I reason that they use 2G mode of Milenage, which still uses both K/Ki and OPc - thus the secret key material used even for 2G Kc and SRES generation from RAND is still 256 bits rather than 128. Again, someone please correct me if my reasoning is wrong here. M~

1 year

failure in Transceiver startup

by Sally Regenbogen

Hello, I am new to this Project and I am having a Problem with running the Transceiver. I hope you can help me out. When i start the Transceiver on 2 Phones with this commands ./osmocon -p /dev/ttyUSB1 -m c123xor -s /tmp/osmocom_l2 -c /root/osmocom/osmocom-bb/src/target/firmware/board/compal_e88/trx.highram.bin ./osmocon -p /dev/ttyUSB2 -m c123xor -s /tmp/osmocom_l2.2 -c /root/osmocom/osmocom-bb/src/target/firmware/board/compal_e88/trx.highram.bin and sudo ./transceiver -e 1 -2 -a 47 -r 99 it throws an error which i can not solve. Maybe i am blind or something, but it doesn't work. I tried to kill the process but i can't find anything. The CLI gave me this error: ~/osmocom/osmocom-bb/src/host/layer23/src/transceiver# sudo ./transceiver -e 1 -2 -a 47 -r 99 47 41 1 <000c> l1ctl.c:77 Tx Reset Req (1) <000c> l1ctl_link.c:171 Sending: '0d 00 00 00 01 00 00 00 ' <000c> l1ctl.c:77 Tx Reset Req (1) <000c> l1ctl_link.c:171 Sending: '0d 00 00 00 01 00 00 00 ' Aborted Even when i try to start it with only 1 Phone, it doesn't run. There is a Problem, but i can't figure out what it is... I hope you can help me out for running my Transceiver or give me some hints. Thank you very much Sally

1 year, 6 months

[Job Opening] Cyber Security Engineer @ ZTE CyberSecurity Lab in Dusseldorf

by WHID We Hack In Disguise

Hi guys, First of all, I want to reassure all the ML members that this is an isolated pseudo spam post and I asked in advance for permission from Harald to post it. Said that... I just wanted to let you know that ZTE is opening a CyberSecurity Lab in Germany and they are looking for Security Engineers passionate about Telco Security. *Position: * Cybersecurity Engineer *Location:* Düsseldorf, Germany *Responsibilities**:* 1. Testing the the security performance (at least but not limited to penetration testing) of ZTE products. Drafting documents and reporting testing results to stakeholders. 2. Participating in security research activities and projects in the Telecommunication field. Study and use cutting-edge security technology/tools for test and research. 3. Participating in product security risk analysis and security requirements collection. 4. Participating in lab operations. 5. Participate in the product security incident response, trace the attack, and give rectification plans. 6. Assisting in security certifications, support security vulnerability verification and rectification of products. 7. Assisting in communicating security-related matters on products across multiple departments *Link for applications:* https://www.linkedin.com/jobs/view/3361789707/ In case of questions, feel free to ping me here or reach me on LinkedIn [1] Cheers Luca [1] https://www.linkedin.com/in/lucabongiorni/

1 year, 6 months

TRX Error at startup

by msfu777

Hello, i'm stucking at running my transceiver. it should be working, but it doesn`t. if i am trying to run both transceivers with: root:~/osmocom/osmocom-bb/src/host/osmocon #? $ ./osmocon -p /dev/ttyUSB1 -m c123xor -s /tmp/osmocom_l2 -c /root/osmocom/osmocom-bb/src/target/firmware/board/compal_e88/trx.highram.bin root:~/osmocom/osmocom-bb/src/host/osmocon #? $ ./osmocon -p /dev/ttyUSB2 -m c123xor -s /tmp/osmocom_l2.2 -c /root/osmocom/osmocom-bb/src/target/firmware/board/compal_e88/trx.highram.bin this one here doesn`t work like it did before. It shows me this Error here. What can ido to get rid of this Error? Can i kill the Process of the TRX or restart it? root:~/osmocom/osmocom-bb/src/host/layer23/src/transceiver #? $ sudo ./transceiver -e 1 -2 -a 47 -r 99 47 41 1 <000c> l1ctl.c:77 Tx Reset Req (1) <000c> l1ctl_link.c:171 Sending: '0d 00 00 00 01 00 00 00 ' <000c> l1ctl.c:77 Tx Reset Req (1) <000c> l1ctl_link.c:171 Sending: '0d 00 00 00 01 00 00 00 ' Aborted it would be nice to hear from you. thanks msfu777

1 year, 7 months

Found spare C155, C116

by muebau

Hello, I found 3x C155, 1x C116 while cleaning out my attic. I there is somebody interested in this devices? I would be happy to give them to the community. muebau

1 year, 7 months

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

baseband-devel November 2022