安装方法是之前在Facebook上看到的，大概翻译下。 我知道大家都懂的＝ ＝
首先肯定是越狱，一键的Absinthe。网上到处都有。然后安装apt，ssh。
在电脑上ssh连接到iPhone（打命令方便。。。）

# Install basic tools  (安装基础工具 svn)
apt-get update
apt-get dist-upgrade
apt-get install wget subversion

# Download correct version of ruby and dependencies (下载ruby和依赖包)
wget http://ininjas.com/repo/debs/ruby_1.9.2-p180-1-1_iphoneos-arm.deb
wget http://ininjas.com/repo/debs/iconv_1.14-1_iphoneos-arm.deb
wget http://ininjas.com/repo/debs/zlib_1.2.3-1_iphoneos-arm.deb

# Install them (安装)
dpkg -i iconv_1.14-1_iphoneos-arm.deb
dpkg -i zlib_1.2.3-1_iphoneos-arm.deb
dpkg -i ruby_1.9.2-p180-1-1_iphoneos-arm.deb

# Delete them (安装完删掉)
rm -rf *.deb

# 个人还是比较喜欢建个pentest目录
cd /
mkdir pentest
cd pentest
svn co https://www.metasploit.com/svn/framework3/trunk/ msf3
cd msf3/

# Check that Metasploit is running (运行msf)
ruby msfconsole

# 升级
./msfupdate
或者
svn update

thanks to offensive security team-CriAdlr