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| author | van Hauser <vh@thc.org> | 2020-05-26 15:57:15 +0200 |
|---|---|---|
| committer | van Hauser <vh@thc.org> | 2020-05-26 15:57:15 +0200 |
| commit | 9dd0b7c6de72100ceaf99bba3b0705f952b36de0 (patch) | |
| tree | 2e34711cdc6e463c849432262892459aa59f156b | |
| parent | 1cae68dde32abf9c7fe83cb9a91890deba973834 (diff) | |
| download | afl++-9dd0b7c6de72100ceaf99bba3b0705f952b36de0.tar.gz | |
make examples better
| -rw-r--r-- | examples/aflpp_driver/GNUmakefile | 8 | ||||
| -rw-r--r-- | examples/persistent_demo/persistent_demo.c | 2 | ||||
| -rw-r--r-- | examples/persistent_demo/persistent_demo_new.c | 23 | ||||
| -rw-r--r-- | llvm_mode/README.persistent_mode.md | 3 |
4 files changed, 4 insertions, 32 deletions
diff --git a/examples/aflpp_driver/GNUmakefile b/examples/aflpp_driver/GNUmakefile index fca3fd2c..a681d2cf 100644 --- a/examples/aflpp_driver/GNUmakefile +++ b/examples/aflpp_driver/GNUmakefile @@ -9,19 +9,13 @@ endif FLAGS=-O3 -funroll-loops -all: libAFLDriver.a libAFLDriver2.a +all: libAFLDriver.a aflpp_driver.o: aflpp_driver.cpp $(LLVM_BINDIR)clang++ $(FLAGS) -stdlib=libc++ -funroll-loops -std=c++11 -c aflpp_driver.cpp -afl-llvm-rt.o: ../../llvm_mode/afl-llvm-rt.o.c - $(LLVM_BINDIR)clang $(FLAGS) -I../../include -c -o afl-llvm-rt.o ../../llvm_mode/afl-llvm-rt.o.c - libAFLDriver.a: aflpp_driver.o ar ru libAFLDriver.a aflpp_driver.o -libAFLDriver2.a: aflpp_driver.o afl-llvm-rt.o - ar ru libAFLDriver2.a aflpp_driver.o afl-llvm-rt.o - clean: rm -f *.o libAFLDriver*.a *~ core diff --git a/examples/persistent_demo/persistent_demo.c b/examples/persistent_demo/persistent_demo.c index 41cd9e38..2da49bb0 100644 --- a/examples/persistent_demo/persistent_demo.c +++ b/examples/persistent_demo/persistent_demo.c @@ -63,7 +63,7 @@ int main(int argc, char **argv) { We just have some trivial inline code that faults on 'foo!'. */ /* do we have enough data? */ - if (len < 8) return 0; + if (len < 8) continue; if (buf[0] == 'f') { diff --git a/examples/persistent_demo/persistent_demo_new.c b/examples/persistent_demo/persistent_demo_new.c index fffd40b6..36411e13 100644 --- a/examples/persistent_demo/persistent_demo_new.c +++ b/examples/persistent_demo/persistent_demo_new.c @@ -30,27 +30,6 @@ __AFL_FUZZ_INIT(); -unsigned int crc32_for_byte(unsigned int r) { - - for (int j = 0; j < 8; ++j) - r = (r & 1 ? 0 : (unsigned int)0xEDB88320L) ^ r >> 1; - return r ^ (unsigned int)0xFF000000L; - -} - -unsigned int crc32(unsigned char *data, unsigned int n_bytes) { - - static unsigned char table[0x100]; - unsigned int crc = 0; - if (!*table) - for (unsigned int i = 0; i < 0x100; ++i) - table[i] = crc32_for_byte(i); - for (unsigned int i = 0; i < n_bytes; ++i) - crc = table[(unsigned char)crc ^ (data)[i]] ^ crc >> 8; - return crc; - -} - /* Main entry point. */ int main(int argc, char **argv) { @@ -70,7 +49,7 @@ int main(int argc, char **argv) { len = __AFL_FUZZ_TESTCASE_LEN; /* do we have enough data? */ - if (len < 8) return 0; + if (len < 8) continue; if (buf[0] == 'f') { diff --git a/llvm_mode/README.persistent_mode.md b/llvm_mode/README.persistent_mode.md index b092de54..7aae8faa 100644 --- a/llvm_mode/README.persistent_mode.md +++ b/llvm_mode/README.persistent_mode.md @@ -32,8 +32,7 @@ main() { while (__AFL_LOOP(10000)) { int len = __AFL_FUZZ_TESTCASE_LEN; - - if (len < 8) return 0; // check for a required/useful minimum input length + if (len < 8) continue; // check for a required/useful minimum input length /* Setup function call, e.g. struct target *tmp = libtarget_init() */ /* Call function to be fuzzed, e.g.: */ |