# custum mutator: symqemu This uses the symcc to find new paths into the target. 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_SYNC_TIME=1 AFL_DISABLE_TRIM=1 afl-fuzz ...```