{"id":385,"date":"2013-06-23T17:42:29","date_gmt":"2013-06-23T17:42:29","guid":{"rendered":"http:\/\/domonkos.tomcsanyi.net\/?p=385"},"modified":"2013-06-23T17:42:29","modified_gmt":"2013-06-23T17:42:29","slug":"gsm-project-is-up-on-github","status":"publish","type":"post","link":"https:\/\/domonkos.tomcsanyi.net\/?p=385","title":{"rendered":"GSM project is up on GitHub"},"content":{"rendered":"<p>I decided to create a new, separate project for all my GSM research. My goal is to sniff <strong>my own<\/strong> data, crack the key, and read the SMS I sent\/listen to the voice call I made. I am still hesitating in terms of hardware to use between OsmocomBB phones (a lot better, more accurate hardware for voice especially) and rtl-sdr (much easier to use, and \u00c2\u00a0so far it already showed how awesome it is and how great capabilities it has).<\/p>\n<p>Anyhow, for key cracking you need to have the a51_table files, which are available from torrents. Sadly I wasn&#8217;t able to find a correctly formatted file containing MD5 hashes for these 40 files, so I collected all the hashes from the a51 mailing list&#8217;s archives and put them in a format that could be used with the Linux utility &#8216;md5sum&#8217; to automatically check integrity.<\/p>\n<p><a href=\"https:\/\/github.com\/domi007\/gsm\">https:\/\/github.com\/domi007\/gsm<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>I will also commit a list containing exact sizes of the table files into this repository, so if you would not like to wait for md5sum you can just check the files based on size.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I decided to create a new, separate project for all my GSM research. My goal is to sniff my own data, crack the key, and read the SMS I sent\/listen to the voice call I made. I am still hesitating in terms of hardware to use between OsmocomBB phones (a lot better, more accurate hardware [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false},"categories":[3],"tags":[117,118,119,120],"_links":{"self":[{"href":"https:\/\/domonkos.tomcsanyi.net\/index.php?rest_route=\/wp\/v2\/posts\/385"}],"collection":[{"href":"https:\/\/domonkos.tomcsanyi.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/domonkos.tomcsanyi.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/domonkos.tomcsanyi.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/domonkos.tomcsanyi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=385"}],"version-history":[{"count":1,"href":"https:\/\/domonkos.tomcsanyi.net\/index.php?rest_route=\/wp\/v2\/posts\/385\/revisions"}],"predecessor-version":[{"id":386,"href":"https:\/\/domonkos.tomcsanyi.net\/index.php?rest_route=\/wp\/v2\/posts\/385\/revisions\/386"}],"wp:attachment":[{"href":"https:\/\/domonkos.tomcsanyi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=385"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/domonkos.tomcsanyi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=385"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/domonkos.tomcsanyi.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=385"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}