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View Code? Open in Web Editor NEWAnkou: Guiding Grey-box Fuzzing towards Combinatorial Difference (ICSE '20)
License: MIT License
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asdyxcyxc eternalsakura fatgrass daydayup40 whitehat42 alifahmed microsvuln diewufeihong thuanpv ahcheongl gtt1995ankou's Issues
Ankou fails during initialization
Hi. I'm using the latest version of AFLPlusPlus with afl-clang-fast. The compiled harness definitely accepts input. However, for some reason ankou gives the following error during initialization for each case:
Problem when writing in control pipe: invalid argument
I run it with the following command:
./Ankou -app ./fuzzed_app -threads 1 -dict my.dict -i fuzz/ankou_input -o fuzz/ankou_output
Any ideas what could be the issue here?
Running with regular afl-fuzz works
can't find the bug in FourIndependentBranchesTest
Hi,
I've tried Ankou on https://github.com/llvm/llvm-project/blob/master/compiler-rt/test/fuzzer/FourIndependentBranchesTest.cpp and failed to make Ankou find the bug
(unless I provide a very close corpus element).
Am I doing something wrong?
From the Ankou paper I expected that it would shine on this kind of puzzles.
My steps:
# Edit FourIndependentBranchesTest.cpp to replace exit(1) with abort()
afl-gcc -c ~/llvm-project/compiler-rt/lib/fuzzer/standalone/StandaloneFuzzTargetMain.c
afl-g++ ~/llvm-project/compiler-rt/test/fuzzer/FourIndependentBranchesTest.cpp StandaloneFuzzT
argetMain.o
rm -rf in out
mkdir in out
echo x > in/x
AFL_SKIP_CPUFREQ=1 afl-fuzz -i in -o out ./a.out @@
# AFL doesn't find the bug in ~5 minutes
echo FUZB > in/y # input similar to the buggy one
AFL_SKIP_CPUFREQ=1 afl-fuzz -i in -o out ./a.out @@
# AFL finds the bug in a few seconds.
rm in/y
../Ankou -app ./a.out -args "@@" -i in -o out
Target: a.out
round number: 632 (10m32s)
len(seedPts) = 9 - throughput: 1.76e+03
total unique crashes: 0 - hangs: 1
#edges: 24 (0.04%)
<Ankou doesn't find the bug in 10+ minutes>
echo FUZB > in/y # input similar to the buggy one
../Ankou -app ./a.out -args "@@" -i in -o out
Target: a.out
round number: 26 (26s)
len(seedPts) = 12 - throughput: 1.62e+03
total unique crashes: 1 - hangs: 1
#edges: 25 (0.04%)
<Ankou finds the bug in 20 seconds>
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