Time Turner - Hacking RF Attendance Systems (To Be in Two Places at Once)

Presented at DEF CON 29 (2021), Aug. 7, 2021, noon (20 minutes)

It's a tale as old as time: a graduating senior needs two more courses to graduate, but the lectures happen to be scheduled at the same time and the school's new high-tech wireless attendance tracking system makes it impossible to attend both courses... in theory. By reverse-engineering the attendance devices and emulating them using a hidden Arduino, the system can be tricked into giving attendance credit for both courses without being physically present. It's a real-life "time turner," allowing him to be in two places at once. REFERENCES: https://github.com/wizard97/iSkipper/releases/download/v1.0.0/iskipper.pdf https://courses.ece.ubc.ca/cpen442/termproject/reports/2010/iclicker.pdf https://people.ece.cornell.edu/land/courses/ece4760/FinalProjects/f2015/cs886_kdv8/cs886_kdv8/cs886_kdv8/index.html https://github.com/wizard97/iSkipper https://github.com/charlescao460/iSkipper-Software

Presenters:

  • Vivek Nair - Ph.D. Student, EECS department, UC Berkeley
    Vivek Nair is a Ph.D. student studying applied cryptography in the EECS department at UC Berkeley. He was the youngest-ever recipient of Bachelor's and Master's degrees in Computer Science at the University of Illinois at the ages of 18 and 19 respectively. He is also a National Science Foundation CyberCorps Scholar and a National Physical Science Consortium Fellow.

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