Presented at
DEF CON 33 (2025),
Aug. 9, 2025, 9 a.m.
(45 minutes).
In 2022 a framework and tool for cryptographic attacks called Cryptosploit was introduced. In this workshop we will demo the capabilities and the underlying philosophy as well as new commands. This will include the flexibility of mixing and matching attack code with oracles and new commands to import and export cryptographic keys. In particular, we will demonstrate how after a successful attack on a public key, we will be able to export the private key corresponding to the certificate. The presentation will conclude with thoughts on improvements.
Presenters:
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Matt Cheung
Matt Cheung started developing his interest in cryptography during an internship in 2011. He worked on implementation of a secure multi-party protocol by adding elliptic curve support to an existing secure text pattern matching protocol. Implementation weaknesses were not a priority and this concerned Matt. This concern prompted him to learn about cryptographic attacks from Dan Boneh's crypto 1 course offered on Coursera and the Matasano/cryptopals challenges. From this experience he has given workshops at the Boston Application Security Conference, BSidesLV, DEF CON, and the Crypto and Privacy VillageHe now serves on the programming committee of the Crypto and Privacy Village. He now serves on the programming committee of the Crypto and Privacy Village.
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