rebuild_qemu.sh

#!/bin/sh
#
# american fuzzy lop - QEMU build script
# --------------------------------------
#
# Written by Andrew Griffiths <agriffiths@google.com> and
#            Michal Zalewski <lcamtuf@google.com>
#
# Copyright 2015, 2016, 2017 Google Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# This script downloads, patches, and builds a version of QEMU with
# minor tweaks to allow non-instrumented binaries to be run under
# afl-fuzz. 
#
# The modifications reside in patches/*. The standalone QEMU binary
# will be written to ../afl-qemu-trace.
#


VERSION="5.2.0"

echo "================================================="
echo "AFL binary-only instrumentation QEMU build script"
echo "================================================="
echo

echo "[*] Configuring QEMU for $CPU_TARGET..."

ORIG_CPU_TARGET="$CPU_TARGET"

test "$CPU_TARGET" = "" && CPU_TARGET="`uname -m`"
test "$CPU_TARGET" = "i686" && CPU_TARGET="i386"

cd qemu-$VERSION/build || exit 1

echo "[*] Attempting to build QEMU (fingers crossed!)..."

make -j6 || exit 1

echo "[+] Build process successful!"

echo "[*] Copying binary..."

cp -f "${CPU_TARGET}-linux-user/qemu-${CPU_TARGET}" "../../afl-qemu-trace" || exit 1

cd ../..
ls -l afl-qemu-trace || exit 1

echo "[+] Successfully created 'afl-qemu-trace'."

exit 0