Here are Cntlm binaries for OpenWrt Attitude Adjustment 12.09, for brcm47xx, if someone needs them. I am using this binary on my Asus router.
Cntlm is an NTLM / NTLM Session Response / NTLMv2 authenticating HTTP proxy intended to help you break free from the chains of Microsoft proprietary world. You can use a free OS and honor our noble idea, but you can't hide. Once you're behind those cold steel bars of a corporate proxy server requiring NTLM authentication, you're done with. The same even applies to 3rd party Windows applications, which don't support NTLM natively.