Publication detail

On Reliability of JA3 Hashes for Fingerprinting Mobile Applications

MATOUŠEK, P. BURGETOVÁ, I. RYŠAVÝ, O. VICTOR, M.

Original Title

On Reliability of JA3 Hashes for Fingerprinting Mobile Applications

Type

conference paper

Language

English

Original Abstract

In recent years, mobile communication has become more secure due to TLS encapsulation. TLS enhances user security by encrypting transmitted data, on the other hand it limits network monitoring and data capturing which is important for digital forensics. When observing mobile traffic today most transmissions are encapsulated by TLS. Encrypted packets causes traditional methods to be obsolete for device fingerprinting that require visibility of protocol headers of HTTP, IMAP, SMTP, IM, etc. As a reaction to data encryption, new methods like TLS fingerprinting have been researched. These methods observe TLS parameters which are exchanged in an open form  before the establishment of a secure channel. TLS parameters can be used for identification of a sending application. Nevertheless, with the constant evolution of TLS protocol suites, it is not easy to create a unique and stable TLS fingerprint for forensic purposes. This paper presents experiments with JA3 hashes on mobile apps. We focus especially on the stability, reliability and uniqueness of JA3 fingerprints for digital forensics. 

Keywords

Mobile application, TLS fingerprinting, network forensics, encrypted communication

Authors

MATOUŠEK, P.; BURGETOVÁ, I.; RYŠAVÝ, O.; VICTOR, M.

Released

7. 2. 2021

Publisher

Springer International Publishing

Location

Boston

ISBN

978-3-030-68733-5

Book

Digital Forensics and Cyber Crime. ICDF2C 2020

Edition

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

Pages from

1

Pages to

22

Pages count

22

URL

https://link.springer.com/chapter/10.1007%2F978-3-030-68734-2_1

BibTex

@inproceedings{BUT168482,
  author="Petr {Matoušek} and Ivana {Burgetová} and Ondřej {Ryšavý} and Malombe {Victor}",
  title="On Reliability of JA3 Hashes for Fingerprinting Mobile Applications",
  booktitle="Digital Forensics and Cyber Crime. ICDF2C 2020",
  year="2021",
  series="Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering",
  volume="351",
  pages="1--22",
  publisher="Springer International Publishing",
  address="Boston",
  doi="10.1007/978-3-030-68734-2\{_}1",
  isbn="978-3-030-68733-5",
  url="https://link.springer.com/chapter/10.1007%2F978-3-030-68734-2_1"
}

Documents

icdf2c2020-matousek.pdf
matousek-2021-OnReliability.pdf