Bitcoin Wallet for Android - Issues decrypting the wallet backup BIN file using OpenSSL
i managed to decrypt a backup by doing this  :

openssl enc -d -aes-256-cbc -md md5 -a -in ./walletbackupfile > decrypted_wallet

however, i have not managed to getting at the private keys from the output.

i have tried wallet-tool dump --dump-privkeys --password=..pin

but it seems like no private keys are dumped in the output

i have also tried wallet-tool raw-dump --dump-privkeys   --password=..pin

that seems to dump some encrypted private keys of some kind, but i am not sure how to proceed from there.