afl使用常见问题总结

1. afl官网https://lcamtuf.coredump.cx/afl/
2. 如何处理stdin作为输入
   A：afl-fuzz命令中不能加@@，源码中可以直接用scanf/cin等，在input文件夹下新建文件给出初始输入
   afl-fuzz -i in -o out ./a.out
   ref：https://groups.google.com/forum/#!msg/afl-users/m63xfVbhDiM/5TfBNIWWCAAJ
   ref：https://groups.google.com/forum/#!topic/afl-users/Milqu8YD_d0
   ref：https://stackoverflow.com/questions/32625699/afl-warning-last-new-path-none-yet-odd-check-syntax
3. 遇到last new path : none yet, odd, check syntax问题
   A：可能afl-gcc编译优化了，试着用AFL_DONT_OPTIMIZE=1 afl-gcc 和AFL_SKIP_CPUFREQ=1 afl-fuzz -i in -o out ./a.out
   A：还可以尝试扩大内存，afl-fuzz中加-m 300 
   A：检查是否正确处理问题stdin作为输入
   A:  如果是文件作为输入要@@： AFL_SKIP_CPUFREQ=1 afl-fuzz -m 1000 -i testcase -o output ./afl.out @@ 
   A：如果是stdin输入不要@@ ：AFL_SKIP_CPUFREQ=1 afl-fuzz -i testcase -o output ./afl.out -m 1000
4. ref：https://groups.google.com/forum/#!topic/afl-users/Milqu8YD_d0
   ref：https://groups.google.com/forum/#!topic/afl-users/zU5SBlvBabg
   ref：https://stackoverflow.com/questions/32625699/afl-warning-last-new-path-none-yet-odd-check-syntax
5.