Symposium sur la sécurité des technologies de l'information et des communications

Conférence francophone sur le thème de la sécurité de l'information.
Elle a eu lieu à Rennes du 2 au 4 juin 2021.

QBDL: QuarkslaB Dynamic LoaderAdrien Guinet, Romain Thomas

Date : 03 June 2021 à 10:15 — 15 min.

The QuarkslaB Dynamic Loader (QBDL) library aims at providing a modular and portable way to dynamically load and link binaries.

The goals of the library are:

  • provide a simple-to-use abstraction to load dynamically linked binaries
  • modular enough to be able to load binaries in foreign systems or lightweight sandboxes (e.g. Miasm's sandbox, or Triton's engine)
  • support loading and dynamic linking of PE/ELF/MachO binaries
  • cross-platform and portable library

Notable non goals of the library:

  • provide full operating system (re)implementations, like Wine or Darling.
  • get the best performance out of all dynamic loaders. Said differently, performance can be scarified for better modularity, in order to make the library usable in various reverse engineering scenarios.
  • supports architectures where pointer values are bigger than 64 bits.