公开(公告)号：US20220124673A1

公开(公告)日：2022-04-21

申请号：US17451123

申请日：2021-10-15

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Yongdae Kim ,  CheolJun Park ,  Hojoon Yang ,  Sangwook Bae ,  Mincheol Son ,  Jiho Lee ,  Hongil Kim

IPC: H04W68/02 ,  H04W56/00

Abstract: A fake base station (FBS) redirection attack method using unicast message injection in a long term evolution (LTE) wireless section and a system thereof are provided. The FBS redirection attack method includes synchronizing with a signal of a commercial base station connected with a target device being an attack target, transmitting an international mobile subscriber identity (IMSI) paging message to the target device using an IMSI of the target deice, and injecting a unicast message including a frequency of an FBS into the target device, before a base station re-access process is completed in the target device which decodes the IMSI paging message.

公开(公告)号：US11405787B2

公开(公告)日：2022-08-02

申请号：US17124634

申请日：2020-12-17

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Yongdae Kim ,  Hojoon Yang ,  Sangwook Bae ,  Mincheol Son ,  Hongil Kim ,  Song Min Kim

IPC: H04W12/122 ,  H04W12/106 ,  H04L9/40 ,  H04W56/00 ,  H04W72/04

Abstract: A physical signal overshadowing attack method for an LTE broadcast message and a system thereof are provided. The method includes identifying physical configuration information of user equipment (UE) which is an attack target and manipulating a physical downlink shared channel (PDSCH), a physical downlink control channel (PDCCH), and a physical control format indicator channel (PCFICH) for subframes of the LTE broadcast message transmitted to the UE to form a subframe for attack, synchronizing a time domain and a frequency domain of the subframe for attack depending on the LTE broadcast message, and injecting the synchronized subframe for attack into legitimate subframes of the LTE broadcast message transmitted to the UE and transmitting the injected subframes.

公开(公告)号：US12010650B2

公开(公告)日：2024-06-11

申请号：US17451123

申请日：2021-10-15

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Yongdae Kim ,  CheolJun Park ,  Hojoon Yang ,  Sangwook Bae ,  Mincheol Son ,  Jiho Lee ,  Hongil Kim

IPC: H04W68/02 ,  H04W56/00

CPC classification number: H04W68/02 ,  H04W56/001

Abstract: A fake base station (FBS) redirection attack method using unicast message injection in a long term evolution (LTE) wireless section and a system thereof are provided. The FBS redirection attack method includes synchronizing with a signal of a commercial base station connected with a target device being an attack target, transmitting an international mobile subscriber identity (IMSI) paging message to the target device using an IMSI of the target deice, and injecting a unicast message including a frequency of an FBS into the target device, before a base station re-access process is completed in the target device which decodes the IMSI paging message.

公开(公告)号：US11082866B2

公开(公告)日：2021-08-03

申请号：US16726066

申请日：2019-12-23

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Yongdae Kim ,  Sangwook Bae ,  Mincheol Son ,  Sooel Son

IPC: H04W24/04 ,  H04W16/22

Abstract: Disclosed are an apparatus and method for diagnosing an abnormality of a mobile communication network. The apparatus for diagnosing an abnormality of a mobile communication network includes a modeling unit that models a control plane operation of an analysis target mobile communication network based on a control plane messages collected by a preset Mobile Network Operator to a terminal in a formal model of a form of a state machine, an analysis unit that compares processing required times of a control plane operation model of the modeled analysis target mobile communication network and a control plane operation model of another mobile communication network previously generated in a same path, and a detection unit that detects an abnormal operation of the mobile communication network of the analysis target based on a comparison result.

公开(公告)号：US20200213879A1

公开(公告)日：2020-07-02

申请号：US16726066

申请日：2019-12-23

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Yongdae Kim ,  Sangwook Bae ,  Mincheol Son ,  Sooel Son

IPC: H04W24/04 ,  H04W16/22

Abstract: Disclosed are an apparatus and method for diagnosing an abnormality of a mobile communication network. The apparatus for diagnosing an abnormality of a mobile communication network includes a modeling unit that models a control plane operation of an analysis target mobile communication network based on a control plane messages collected by a preset Mobile Network Operator to a terminal in a formal model of a form of a state machine, an analysis unit that compares processing required times of a control plane operation model of the modeled analysis target mobile communication network and a control plane operation model of another mobile communication network previously generated in a same path, and a detection unit that detects an abnormal operation of the mobile communication network of the analysis target based on a comparison result.