This class is designed to introduce students to the best tools and technology available for automating vulnerability discovery and crash triage with a focus on delivering a practical approach to finding vulnerabilities in real world targets.
Take a deep dive into fuzzing targeting real-world parsers, codecs, DOMs, and scripting engines used in the top web browsers and learn strategies for analyzing attack surface, writing grammars, and generating effective inputs. We will explore in detail the latest innovations such as harnessing code coverage for guided evolutionary fuzzing and symbolic reasoning for concolic fuzzing.
We approach crash analysis through the lens of advanced debuggers and program analysis. We will apply tools like time-travel (reverse) debugging and memory sanitizers to assist in interactively diagnosing the root cause of crashes. Then we will leverage the power of dynamic taint tracking and graph slicing to help isolate the path of user controlled input in the program and identify the exact input bytes influencing a crash.
This class will focus on x86/x64 architecture and target file parsers, network parsers and browsers on Windows and Linux environments.
This class is meant for professional developers or security researchers looking to add an automation component to their software security analysis. Students wanting to learn a programmatic and tool driven approach to analyzing software vulnerabilities and crash triage will benefit from this course.
Students should be prepared to tackle challenging and diverse subject matter and be comfortable writing functions in C/C++ and Python to complete exercises. Attendees should have basic experience with debugging native x86/x64 memory corruption vulnerabilities on Linux or Windows.
Cloud based VMs will be provided for the class. Students will be able to download the VMs for offline use outside of class.
Fuzzing Linux file and network parsers
Targeted blind network fuzzing
Grammar fuzzing network protocols
Fuzz any Ubuntu/Debian package with AFL
Modifying targets and writing harnesses with LibFuzzer
Fuzzing closed source parsers with QEMU
Concolic test case generation for closed source parsers
Fuzzing Windows parsers with WinAFL
Optimizing harnesses for exported APIs
Hooking closed source command line applications
Deep hooks into private library functions with global state
Fuzzing internal data streams in complex OLE objects
Crash Analysis
Introduction to time travel debugging
Crash analysis with rr debugger on Linux
Crash analysis with Time Travel Debugger on Windows
Automatic crash slicing for root cause analysis
Fuzzing browser scripting environments
Understanding grammars and object models
Fuzzing object models with dynamic grammar fuzzing
Improving grammar fuzzers with feedback metrics
