# custom mutator: symqemu

This uses the symcc to find new paths into the target.

## How to build and use

To use this custom mutator follow the steps in the symqemu repository 
[https://github.com/eurecom-s3/symqemu/](https://github.com/eurecom-s3/symqemu/) 
on how to build symqemu-x86_x64 and put it in your `PATH`.

Just type `make` to build this custom mutator.

```AFL_CUSTOM_MUTATOR_LIBRARY=custom_mutators/symqemu/symqemu-mutator.so AFL_DISABLE_TRIM=1 afl-fuzz ...```

## Options

`SYMQEMU_ALL=1` - use concolic solving on **all** queue items, not only interesting/favorite ones.

`SYMQEMU_LATE=1` - use concolic solving only after there have been no finds for 5 minutes.
