Summary

You can view the completed source for the fuzzer here.

In this exercise, we learned:

• About creating rust library and binary crates
• How to add dependencies
• What LibAFL_Targets does
• How to choose and create a good fuzz target
• About Rust memory and ownership semantics
• How to unsafely allocate memory
• How to implement a simple decoder
• How to unit test a rust function
• How to instrument a library with SanitizerCoverage
• How to link a fuzzer with a static library
• How to set a new global allocator
• How to create a fuzzer using LibAFL including all its components
  • Observers
  • Feedbacks
  • Fuzzers
  • Monitors
  • Mutators
  • Schedulers
  • Stages
  • Executors
  • ...
• How to parse command line arguments
• How to find crashing inputs using a fuzzer and fix the bugs that cause them