We just dissect the source code from this guy's repo:https://github.com/bruce30262/libprotobuf-mutator_fuzzing_learning
we will use same .proto file to generate the messages
there are two main source code for our interess:
lpm_libfuzz.cc: Convert protobuf to raw data and feed it to the target functionharness.cc: Our target function
0x1.LPM_LIBFUZZER.CC
0x1/0x1.ProtoToData analysis
It creates a stringstream(a string in ourcase,a lie it creates a hashmap as a string) than he contatenates it resuting in :
a: 33554433
b: ""
After that he just checks if checks to see if PROTO_FUZZER_DUMP_PATH is set so we can save crash files.
0x2.Harnesser.cc:
there is out fuzzed function.if the generated data starts with '\x01' it generates a trap signal,and stops the fuzzer
Hi
ReplyDeleteIt seems that you have not posted relevant posts/entries after continuous assessment.
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Chirag
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ReplyDeletePlease work upon previous feedback and information provided with.
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Many thanks
Chirag
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ReplyDeleteThis is general guide on total number of expected blog posts. please note that it is possible to have more than 30 posts:
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Introduction Post
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Initial Idea 1 Post
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Chirag