https://reverse.put.as/tags/afl/ Recent content in afl on Reverse Engineering Hugo -- gohugo.io en-us reverser@put.as (fG!) reverser@put.as (fG!) &copy; 2025 fG! Mon, 10 Jul 2017 12:10:08 +0100 https://reverse.put.as/2017/07/10/compiling-afl-osx-llvm-mode/ Mon, 10 Jul 2017 12:10:08 +0100 reverser@put.as (fG!) https://reverse.put.as/2017/07/10/compiling-afl-osx-llvm-mode/ <p>American fuzzy lop aka <a href="http://lcamtuf.coredump.cx/afl/">AFL</a> is one of the easiest and best fuzzers out there and should be part of your development cycle if you care at least one bit about the security of your code.</p> <p>Its performance in <em>OS X</em> is a bit of a let down because of issues at <strong>fork()</strong> system call. <em>AFL</em> warns you about this when compiling it:</p> <blockquote> <p>WARNING: Fuzzing on MacOS X is slow because of the unusually high overhead of fork() on this OS. Consider using Linux or *BSD. You can also use VirtualBox (virtualbox.org) to put AFL inside a Linux or *BSD VM.</p> </blockquote>