Extract protocol buffer messages from binary data
#!/bin/bash | |
# | |
# Try to decode hidden protocol buffers message from binary | |
size=$(wc -c < $1) | |
for ((i=1; i<=$size; i++)) | |
do | |
# Skip $i bytes and decode | |
dd if=$1 bs=1 skip=$i | protoc --decode_raw | |
if [[ $? == 0 ]] | |
then | |
printf "\n" | |
read -p "Removed $i bytes, continue? [Yy] " -n 1 -r | |
printf "\n\n" | |
if [[ ! $REPLY =~ ^[Yy]$ ]] | |
then | |
exit 0 | |
fi | |
fi | |
done |
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