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Subject[v2, 0/4] x86 instruction emulator fuzzing
Date
Dear all,

This series aims to provide an entrypoint for, and fuzz KVM's x86 instruction
emulator from userspace. It mirrors Xen's application of the AFL fuzzer to
it's instruction emulator in the hopes of discovering vulnerabilities.
Since this entrypoint also allows arbitrary execution of the emulators code
from userspace, it may also be useful for testing.

The current 4 patches build the emulator and 2 harnesses: simple-harness is
an example of unit testing; afl-harness is a frontend for the AFL fuzzer.

Patches
=======

- 01: Builds and links afl-harness with the required kernel objects.
- 02: Introduces the minimal set of emulator operations and supporting code
to emulate simple instructions.
- 03: Demonstrates simple-harness as a unit test.
- 04: Adds scripts for install, running, and crash triage.

Any comments/suggestions are greatly appreciated.

Best,
Sam Caccavale

Sam Caccavale (4):
Build target for emulate.o as a userspace binary
Emulate simple x86 instructions in userspace
Demonstrating unit testing via simple-harness
Added scripts for filtering, building, deploying

tools/Makefile | 9 +
tools/fuzz/x86ie/.gitignore | 2 +
tools/fuzz/x86ie/Makefile | 54 +++
tools/fuzz/x86ie/README.md | 12 +
tools/fuzz/x86ie/afl-harness.c | 151 +++++++
tools/fuzz/x86ie/common.h | 87 ++++
tools/fuzz/x86ie/emulator_ops.c | 398 ++++++++++++++++++
tools/fuzz/x86ie/emulator_ops.h | 120 ++++++
tools/fuzz/x86ie/scripts/afl-many | 28 ++
tools/fuzz/x86ie/scripts/bin.sh | 49 +++
tools/fuzz/x86ie/scripts/build.sh | 32 ++
tools/fuzz/x86ie/scripts/coalesce.sh | 6 +
tools/fuzz/x86ie/scripts/deploy.sh | 9 +
tools/fuzz/x86ie/scripts/deploy_remote.sh | 9 +
tools/fuzz/x86ie/scripts/gen_output.sh | 11 +
tools/fuzz/x86ie/scripts/install_afl.sh | 14 +
.../fuzz/x86ie/scripts/install_deps_ubuntu.sh | 5 +
tools/fuzz/x86ie/scripts/rebuild.sh | 6 +
tools/fuzz/x86ie/scripts/run.sh | 10 +
tools/fuzz/x86ie/scripts/summarize.sh | 9 +
tools/fuzz/x86ie/simple-harness.c | 42 ++
tools/fuzz/x86ie/stubs.c | 56 +++
tools/fuzz/x86ie/stubs.h | 52 +++
23 files changed, 1171 insertions(+)
create mode 100644 tools/fuzz/x86ie/.gitignore
create mode 100644 tools/fuzz/x86ie/Makefile
create mode 100644 tools/fuzz/x86ie/README.md
create mode 100644 tools/fuzz/x86ie/afl-harness.c
create mode 100644 tools/fuzz/x86ie/common.h
create mode 100644 tools/fuzz/x86ie/emulator_ops.c
create mode 100644 tools/fuzz/x86ie/emulator_ops.h
create mode 100755 tools/fuzz/x86ie/scripts/afl-many
create mode 100755 tools/fuzz/x86ie/scripts/bin.sh
create mode 100755 tools/fuzz/x86ie/scripts/build.sh
create mode 100755 tools/fuzz/x86ie/scripts/coalesce.sh
create mode 100644 tools/fuzz/x86ie/scripts/deploy.sh
create mode 100755 tools/fuzz/x86ie/scripts/deploy_remote.sh
create mode 100755 tools/fuzz/x86ie/scripts/gen_output.sh
create mode 100755 tools/fuzz/x86ie/scripts/install_afl.sh
create mode 100755 tools/fuzz/x86ie/scripts/install_deps_ubuntu.sh
create mode 100755 tools/fuzz/x86ie/scripts/rebuild.sh
create mode 100755 tools/fuzz/x86ie/scripts/run.sh
create mode 100755 tools/fuzz/x86ie/scripts/summarize.sh
create mode 100644 tools/fuzz/x86ie/simple-harness.c
create mode 100644 tools/fuzz/x86ie/stubs.c
create mode 100644 tools/fuzz/x86ie/stubs.h

--
2.17.1




Amazon Development Center Germany GmbH
Krausenstr. 38
10117 Berlin
Geschaeftsfuehrung: Christian Schlaeger, Ralf Herbrich
Eingetragen am Amtsgericht Charlottenburg unter HRB 149173 B
Sitz: Berlin
Ust-ID: DE 289 237 879



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