看了狗神的如何hooK root权限的app 这个贴http://bbs.iosre.com/t/igrimace-hook-root-app/440 ，想亲自试验一下hook igrimace v8 这个app。查看log 发现，hook是成功了，但是v8取一直转菊花了，无法启动，以下是log:
Jul 13 12:01:57 shouyu SpringBoard[76] : Unable to obtain a task name port right for pid 828: (os/kern) failure (5)
Jul 13 12:01:57 shouyu SpringBoard[76] : Unable to obtain a task name port right for <FBApplicationProcess: 0x1a661f80; com.unkn0wn.igvx; pid: 828>
Jul 13 12:01:57 shouyu SpringBoard[76] : Unable to obtain a task name port right for pid 828: (os/kern) failure (5)
Jul 13 12:01:57 shouyu SpringBoard[76] : Unable to obtain a task name port right for <FBApplicationProcess: 0x1a661f80; igvx; pid: 828>
Jul 13 12:01:57 shouyu locationd[120] : Gesture EnabledForTopCLient: 0, EnabledInDaemonSettings: 0
Jul 13 12:01:57 shouyu nsurlstoraged[237] : NetworkStorageDB:_openDBWriteConnections: failed to open write connection to DB @ /var/mobile/Library/Caches/com.unkn0wn.igvx/Cache.db. Error=14. Cause=unable to open database file
Jul 13 12:01:57 shouyu nsurlstoraged[237] : NetworkStorageDB:_openDBReadConnections: failed to open read connection to DB @ /var/mobile/Library/Caches/com.unkn0wn.igvx/Cache.db. Error=14. Cause=unable to open database file
Jul 13 12:01:58 shouyu igvx[828] : assertion failed: 12H143: libxpc.dylib + 51915 [88A50DD0-8E7B-3CD6-AC30-BA113A415E4F]: 0x7d
Jul 13 12:01:58 shouyu Unknown[828] :
Jul 13 12:01:58 shouyu igvx[828] : e[1;36m[igvxpro] e[me[0;36mTweak.xm:17e[m e[0;30;46mDEBUG:e[m -[<LoginViewController: 0x14e328c0> initApp]
Jul 13 12:01:58 shouyu igvx[828] : 测试initapp中
Jul 13 12:01:58 shouyu igvx[828] : e[1;36m[igvxpro] e[me[0;36mTweak.xm:24e[m e[0;30;46mDEBUG:e[m -[<LoginViewController: 0x14e328c0> doActivate]
Jul 13 12:01:58 shouyu igvx[828] : LoginViewController登录控制器显示
Jul 13 12:01:58 shouyu igvx[828] : 移除测试
Jul 13 12:01:59 shouyu locationd[120] : Gesture EnabledForTopCLient: 0, EnabledInDaemonSettings: 0
Jul 13 12:02:01 shouyu nsurlstoraged[237] : NetworkStorageDB:_openDBWriteConnections: failed to open write connection to DB @ /var/mobile/Library/Caches/com.unkn0wn.igvx/Cache.db. Error=14. Cause=unable to open database file
中文是hook打印的东西。看log是打不开数据库么，用PP助手查看路径 的确没有/var/mobile/Library/Caches/com.unkn0wn.igvx/Cache.db 这个数据文件了。但是我并没有动过这个文件，我是根据教程，用insert_dylib处理二进制文件，然后拷贝回去，再把相应的dylib 库放到手机的相应目录(这边是 /var/tmp/igv8pro.dylib)。是什么原因导致这个错误的呢，是该软件本身就做了防护么。对了， igrimace v8 现在是已经过了试用期的。求大神解惑。