FUZZING

Analyzing the Linux Kernel in Userland with AFL and KLEE

At GRIMM we do a lot of vulnerability research and one of our favorite techniques for finding bugs in software is to repurpose or extend security tools from one area of research to another. One great example of this is when Juwei Lin and Lilang Wu ported syzkaller, the popular Linux kernel fuzzer, to macOS. Their research undercovered […]

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Delta Debugging

Delta Debugging Have you ever been fuzzing a program and received a crash, only to find the input file was huge?  Trying to manually determine which portions of an input file trigger the bug can be an extremely frustrating and time consuming process. Huge input files can make the triage of bugs much harder. This

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