Problems with running fuzz-harness

[DaSoty]

Good afternoon,

I want to try the “fuzz-harness” tool and I'm having a hard time understanding how it interacts with the scenarios to apply fuzzing.

First of all, it is giving me a lot of problems when creating the container. To do this, I had to run line by line the “docker.sh” commands modifying “HARNESS_DIR” by the absolute path where the folder is located, if I run it this way, it works correctly and creates the container.

Once inside the container, I don't understand what steps to follow to be able to connect the fuzzer to a scenario. I understand that first I have to execute the script “compile.sh” and then “fuzz.sh” but this second one generates permission errors when executing it (it cannot create the “default” folder inside “output”).

The permissions error, I have tried to solve it by executing the initial commands in root, however, following the same steps does not work.

Do you have any documentation or information on how to apply the fuzzer within a scenario?

Thank you very much!