Vatsvagiri kubva kuKorea Advanced Institute of Technology vakaburitsa iyo LTESniffer toolkit, iyo inokutendera iwe kuita zvishoma (pasina kutumira masaini pamhepo) kuronga kuteerera uye kuvharira traffic pakati pechiteshi chepasi uye mbozhanhare mu4G LTE network. Iyo Toolkit inopa zvishandiso zvekuronga kuvharirwa kwetraffic uye kuisirwa API yekushandisa iyo LTESniffer mashandiro mune yechitatu-bato maapplication.
LTESniffer inopa decoding yemuviri chiteshi PDCCH (Physical Downlink Control Channel) kuti uwane ruzivo nezve traffic kubva kune base chiteshi (DCI, Downlink Kudzora Ruzivo) uye yenguva pfupi network identifiers (RNTI, Radio Network Temporary Identifier). Tsanangudzo yeDCI neRNTI inoenderera mberi ichibvumira decoding data kubva kuPDSCH (Physical Downlink Shared Channel) uye PUSCH (Physical Uplink Shared Channel) chiteshi kuti uwane mukana weinouya uye inobuda traffic. Panguva imwecheteyo, LTESniffer haibvisi encrypted meseji inofambiswa pakati penhare mbozha nebhesi chiteshi, asi inopa kuwana chete kune ruzivo rwunopfuudzwa mumavara akajeka. Semuenzaniso, mameseji anotumirwa neiyo base chiteshi mune yekutepfenyura modhi uye ekutanga mameseji ekubatanidza anofambiswa pasina encryption, izvo zvinoita kuti zvikwanise kuunganidza ruzivo nezve kubva kunhamba ipi, riini uye kune iyo nhamba pakanga paine mafoni).
Kupindira kunoda mimwe michina. Kuvhara traffic chete kubva pachigadziko chiteshi, USRP B210 programmable transceiver (SDR) ine maviri antennas, inodhura madhora mazana maviri emadhora, inokwana. Kubvisa traffic kubva kunharembozha kuenda kuchiteshi chepasi, inodhura zvakanyanya USRP X2000 SDR bhodhi ine maviri ekuwedzera transceivers (iyo kit inodhura madhora zviuru gumi nerimwe) inodiwa, sezvo kufembedza kwepaketi inotumirwa nenharembozha kunoda nguva chaiyo yekuwiriranisa pakati pemafuremu akatumirwa neakagamuchirwa. uye zviratidzo zvekugamuchira panguva imwe chete mumabhendi maviri akasiyana. Komputa ine simba rakaringana inodiwawo kuti utore bumbiro, semuenzaniso, kuongorora traffic ye base station ine zana nemakumi mashanu vashandisi vanoshanda, Intel i310 CPU system uye 11000GB ye RAM inokurudzirwa.
Zvinhu zvikuru zveLTESniffer:
- Chaiyo-nguva decoding yeinobuda uye inouya yeLTE control chiteshi (PDCCH, PDSCH, PUSCH).
- Tsigiro yeLTE Yepamberi (4G) uye LTE Yepamberi Pro (5G, 256-QAM) zvakatemwa.
- Tsigiro yeDCI (Downlink Control Information) mafomati: 0, 1A, 1, 1B, 1C, 2, 2A, 2B.
- Tsigiro yemamodhi ekufambisa data: 1, 2, 3, 4.
- Tsigiro yefrequency division duplex (FDD) chiteshi.
- Tsigiro yezviteshi zvepasi uchishandisa ma frequency anosvika makumi maviri MHz.
- Kuona otomatiki kweakashandiswa modulation zvirongwa zveinouya uye inobuda data (16QAM, 64QAM, 256QAM).
- Kuonekwa otomatiki kwezvimiro zvemuviri zvigadziriso zvefoni yega yega.
- LTE Chengetedzo API rutsigiro: RNTI-TMSI mepu, IMSI muunganidzwa, profiling.
Source: opennet.ru