A simple tool to extract symbols from libcs
git clone https://github.com/Escapingbug/libc_offdb
sudo python setup.py install
download_libcs
from libc_offdb.libc import find_libc, get_libcs
libcs = get_libcs # this will take a while, but it gives you all the libcs it has
wanted_libc = find_libc('a10', 'scanf') # given a offset(last few is OK), and a symbol
# and this will give you a list of dict of symbols:offset pair