News Channel

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News / Weather channel downloads data packages from Nintendo servers via plain http connection.

Some examples:

http://weather.wapp.wii.com/1/076/short.bin http://weather.wapp.wii.com/1/076/forecast.bin http://news.wapp.wii.com/1/076/news.bin.08

File structure:

$0000 - $003F: padding (00) $0040 - $013F: rsa encrypted sha-1 signature of rest of the file $0140 - $....: compressed data

Data compression method is still unknown. If you calculate entropy of the data, you will notice that it is definitely not encrypted. Probably it uses a modified version of propieritary Nintendo compression method described here: http://everything2.com/index.pl?node_id=1469892&lastnode_id=0

Here's a part of news data file: 000003D8 24 0F F0 00 7F 23 D7 00 87 24 2F 14 00 52 00 00 65 00 67 00 69 00 6F 00 $....#...$/..R..e.g.i.o. 000003F0 00 6E 00 61 00 6C 00 20 00 45 4E 00 11 77 00 73 05 4A 49 00 13 56 74 00 .n.a.l. .EN..w.s.JI..Vt.

You can almost see string "Regional News" there.