i couldn't stand busybox; so i built bash.
in case you don't feel like building it yourself, here's the binary.
(source)
md5:
4b5000f232e96db8aba5722ee90aff7a bash.tar.bz2
sha512:
0d59e498dfd576a48f2294a81e61665ca5e402c254add6d24a 79aeb3379971bfcfc6db5aee2ec8a425dbdfb0ccdd0db425fb 786d0ad66599c9c0ac4a13deb9b2 bash.tar.bz2