0609, 2022

DeepSec 2022 Talk: Identification of the Location in the 5G Network – Giorgi Akhalaia

Sanna/ September 6, 2022/ Conference

Mobile devices can provide the majority of everyday services: like emergency, healthcare, security services. The development of mobile devices itself triggered the 5G network deployment. The new telecom standard will create a new ecosystem with a variety of industries and will exceed the limit of telecom communication. With new standards, functionality, services, products always arise new cyber threats. The operating spectrum in the 5G Network is divided into 3 categories: Low, Middle and High Bands. Actually, the third category, high band, also known as mmWave provides majority benefits of the new standard. This band covers from 6 GHz to 100 GHz operating spectrums. Because of the limitation of this frequency range, devices connected to high-band have to be near to the cell-tower. Otherwise, buildings will interrupt the connection. So, when a user is connected

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0810, 2017

DeepSec 2017 Talk: BITSInject – Control Your BITS, Get SYSTEM – Dor Azouri

Sanna/ October 8, 2017/ Conference, Internet, Security

Microsoft has introduced the Background Intelligent Transfer Service (BITS) into Windows 2000 and later versions of the operating system. Windows 7 and Windows Server 2008 R2 feature the version 4.0 of the protocol. BITS is designed to use idle bandwidth in order to transfer data to and from servers. BITS is an obedient servant, and it may be abused into doing transfers on behalf of others. Dor Azouri will present his findings regarding BITS at DeepSec 2007. Windows’ BITS service is a middleman for your download jobs. You start a BITS job, and from that point on, BITS is responsible for the download. But what if we tell you that BITS is a careless middleman? Current Windows software comes packaged with a mix of old and new features and components. New, shiny features and

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1502, 2016

DeepSec Video: illusoryTLS – Nobody But Us. Impersonate,Tamper and Exploit

René Pfeiffer/ February 15, 2016/ Conference, Internet, Security

Cryptographic backdoors are a timely topic often debated as a government matter to legislate on. At the same time, they define a space that some entities might have practically explored for intelligence purposes, regardless of the policy framework. The Web Public Key Infrastructure (PKI) we daily rely on provides an appealing target for attack. The entire X.509 PKI security architecture falls apart if a single CA certificate with a secretly embedded backdoor enters the certificate store of trusting parties. Do we have sufficient assurance that this has not happened already? Alfonso De Gregorio presented at DeepSec 2015 his findings and introduced illusoryTLS. Aptly named illusoryTLS, the entry is an instance of the Young and Yung elliptic curve asymmetric backdoor in the RSA key generation. The backdoor targets a Certification Authority public-key certificate, imported in

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