Pascal Winkler

Wissenschaftlicher Mitarbeiter

Pascal Winkler, M.Sc.

S-GW 309
+49 201 18-37019

Zur Person:

Pascal Winkler ist wissenschaftlicher Mitarbeiter am Lehrstuhl für Systemsicherheit an der Universität Duisburg-Essen.


Seit 01/2024
Wissenschaftlicher Mitarbeiter am Lehrstuhl für Sichere Software Systeme (SYSSEC) an der Universität Duisburg-Essen
02/2023 - 12/2023
Wissenschaftliche Hilfskraft am Lehrstuhl für Sichere Software Systeme (SYSSEC) an der Universität Duisburg-Essen
10/2021 - 12/2023
Masterstudium Software and Network Engineering an der Universität Duisburg-Essen
07/2019 - 02/2023
Softwaretester bei PLEdoc GmbH
10/2017 - 09/2021

Bachelorstudium Wirtschaftsinformatik an der Universität Duisburg-Essen


  • Smolka, Sven; Giesen, Jens-Rene; Winkler, Pascal; Draissi, Oussama; Davi, Lucas; Karame, Ghassan; Pohl, Klaus: Fuzz on the Beach: Fuzzing Solana Smart Contracts. In: Proc. of the 30th ACM SIGSAC Conference on Computer & Communications Security (CCS). ACM, Copenhagen, Denmark 2023. BIB DownloadDetails

    Solana has quickly emerged as a popular platform for building decentralized applications (DApps), such as marketplaces for non- fungible tokens (NFTs). A key reason for its success are Solana’s low transaction fees and high performance, which is achieved in part due to its stateless programming model. Although the litera- ture features extensive tooling support for smart contract security, current solutions are largely tailored for the Ethereum Virtual Ma- chine. Unfortunately, the very stateless nature of Solana’s execution environment introduces novel attack patterns specific to Solana requiring a rethinking for building vulnerability analysis methods. In this paper, we address this gap and propose FuzzDelSol, the first binary-only coverage-guided fuzzing architecture for Solana smart contracts. FuzzDelSol faithfully models runtime specifics such as smart contract interactions. Moreover, since source code is not available for the large majority of Solana contracts, FuzzDelSol operates on the contract’s binary code. Hence, due to the lack of semantic information, we carefully extracted low-level program and state information to develop a diverse set of bug oracles covering all major bug classes in Solana. Our extensive evaluation on 6049 smart contracts shows that FuzzDelSol’s bug oracles finds impactful vulnerabilities with a high precision and recall. To the best of our knowledge, this is the largest evaluation of the security landscape on the Solana mainnet.