{"guid":"import-708b15f151751c94c5","title":"Introducing Osmo-GMR","subtitle":"Building a sniffer for the GMR satphones","slug":"28c3-4688-en-introducing_osmo_gmr","link":"http://events.ccc.de/congress/2011/Fahrplan/events/4688.en.html","description":"The latest member of the Osmocom-family projects, osmo-gmr focuses on the GMR-1 (GEO Mobile Radio) air interface used in some satellite Phones. This talk will shortly present the GMR protocol, the Thuraya network that uses this protocol in the Eurasian/African and Australian continents and finally details how you can capture samples and process them for analysis using osmo-gmr.\n","original_language":"eng","persons":["Sylvain Munaut"],"tags":["28c3"," Hacking"],"view_count":570,"promoted":false,"date":"2011-12-29T01:00:00.000+01:00","release_date":"2012-01-04T01:00:00.000+01:00","updated_at":"2026-03-29T05:45:02.866+02:00","length":3320,"duration":3320,"thumb_url":"https://static.media.ccc.de/media/congress/2011/28c3-4688-en-introducing_osmo_gmr_h264.jpg","poster_url":"https://static.media.ccc.de/media/congress/2011/28c3-4688-en-introducing_osmo_gmr_h264_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/2011/import-708b15f151751c94c5-timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/2011/import-708b15f151751c94c5-thumbnails.vtt","frontend_link":"https://media.ccc.de/v/28c3-4688-en-introducing_osmo_gmr","url":"https://api.media.ccc.de/public/events/import-708b15f151751c94c5","conference_title":"28C3: behind enemy lines","conference_url":"https://api.media.ccc.de/public/conferences/28c3","related":[{"event_id":164,"event_guid":"import-36dbb5c49c18934cd7","weight":1},{"event_id":236,"event_guid":"import-17d6a5439f69d41e5e","weight":1},{"event_id":985,"event_guid":"import-c0c97d7b572b39d4f7","weight":1},{"event_id":1053,"event_guid":"import-6809edc70e003b4ece","weight":1},{"event_id":1203,"event_guid":"import-fc58b881c2cf74003e","weight":1},{"event_id":1520,"event_guid":"import-70c32b8bc4f7a9b0a7","weight":3},{"event_id":1534,"event_guid":"import-5fe6dab8530ac65492","weight":1},{"event_id":1539,"event_guid":"import-b7bf07eb250a05828e","weight":1},{"event_id":1541,"event_guid":"import-8fd39363e733cd1101","weight":1},{"event_id":1587,"event_guid":"import-a54618b083eeb9fc4d","weight":1},{"event_id":1630,"event_guid":"import-196baee714b3785cfb","weight":2},{"event_id":1835,"event_guid":"xdX27wLbHpeOU_dSgBO4Hg","weight":1},{"event_id":1845,"event_guid":"HimAg2Mox6GCcmhbE0NWkQ","weight":1},{"event_id":2154,"event_guid":"E95sP8WH8tLiiJj2SBAA1A","weight":24},{"event_id":2281,"event_guid":"7f270061-0231-41d4-b50c-f1017231c534","weight":1},{"event_id":2302,"event_guid":"rHjqtfbslD_ucUr8kW5wcQ","weight":1},{"event_id":2475,"event_guid":"2b3d8f9e-7169-457a-b2db-834282f437f4","weight":1},{"event_id":2508,"event_guid":"ed4bcb3b-fe2d-4728-812d-a45dbd4d01db","weight":1},{"event_id":3244,"event_guid":"6a272039-1cce-5108-8c6c-6f993f74a524","weight":5},{"event_id":3274,"event_guid":"cec2c1dd-88ab-5fa8-80c1-686188641cc3","weight":2},{"event_id":3602,"event_guid":"48e016a4-5683-4bda-8976-98f1dbf62787","weight":1},{"event_id":3640,"event_guid":"700a07e7-a9c4-437b-a4c5-4491b23a9b4a","weight":1},{"event_id":3671,"event_guid":"4ef69e6a-026f-4b30-888d-af654b220a3d","weight":1},{"event_id":3731,"event_guid":"bc638f9f-0370-42f9-b83c-f85cca4ca38d","weight":2},{"event_id":3831,"event_guid":"3fbcc011-9ccb-53bf-beae-75e0235f90e5","weight":1}],"recordings":[{"size":346,"length":3320,"mime_type":"video/webm","language":"eng","filename":"28c3-4688-en-introducing_osmo_gmr.webm","state":"downloaded","folder":"webm","high_quality":true,"width":720,"height":576,"updated_at":"2016-01-27T11:03:49.549+01:00","recording_url":"https://cdn.media.ccc.de/congress/2011/webm/28c3-4688-en-introducing_osmo_gmr.webm","url":"https://api.media.ccc.de/public/recordings/3122","event_url":"https://api.media.ccc.de/public/events/import-708b15f151751c94c5","conference_url":"https://api.media.ccc.de/public/conferences/28c3"},{"size":346,"length":3320,"mime_type":"audio/ogg","language":"eng","filename":"28c3-4688-en-introducing_osmo_gmr.ogg","state":"downloaded","folder":"ogg-audio-only","high_quality":true,"width":720,"height":576,"updated_at":"2014-05-31T23:45:44.497+02:00","recording_url":"https://cdn.media.ccc.de/congress/2011/ogg-audio-only/28c3-4688-en-introducing_osmo_gmr.ogg","url":"https://api.media.ccc.de/public/recordings/3123","event_url":"https://api.media.ccc.de/public/events/import-708b15f151751c94c5","conference_url":"https://api.media.ccc.de/public/conferences/28c3"}]}