1.目标
由于某多多App现使用longlink进行数据传输，使用charles工具抓包只能抓到https://th.pinduoduo.com/t.gif链接。本文的目则是使用charles等抓包工具能正常抓包
2.操作环境
- 越狱iPhone一台
- frida
3.流程
下载最新某多多App。关键词longlink则是我们的切入点，在终端执行frida-trace -U -f com.xunmeng.pinduoduo -m "[ ongink]" -M "[UI ]" -M "[_ *]"命令后获取到关键信息列表：
+[AMTitanHelper makesureLongLinkConnect:]: Loaded handler at "/Users/witchan/__handlers__/AMTitanHelper/makesureLongLinkConnect_.js"-[AMTitanLongLinkInfoManager updateLongLinkStatusInfoWithHost:longLinkStatus:longLinkInfo:]: Loaded handler at "/Users/witchan/__handlers__/AMTitanLongLinkInfoManager/updateLongLinkStatusInfoWithHost_663278c1.js"-[AMTitanLongLinkInfoManager longLinkStatusInfoDic]: Loaded handler at "/Users/witchan/__handlers__/AMTitanLongLinkInfoManager/longLinkStatusInfoDic.js"-[AMTitanLongLinkInfoManager setLongLinkStatusInfoDic:]: Loaded handler at "/Users/witchan/__handlers__/AMTitanLongLinkInfoManager/setLongLinkStatusInfoDic_.js"-[PDDProbeRaceManager longLinkRaceResult:traceId:reportBlock:callback:]: Loaded handler at "/Users/witchan/__handlers__/PDDProbeRaceManager/longLinkRaceResult_traceId_repor_9af8c15b.js"-[AMTitanNetworkConfig setLonglinkHostConfig:]: Loaded handler at "/Users/witchan/__handlers__/AMTitanNetworkConfig/setLonglinkHostConfig_.js"-[AMTitanNetworkConfig longlinkHostConfig]: Loaded handler at "/Users/witchan/__handlers__/AMTitanNetworkConfig/longlinkHostConfig.js"+[PDDNetworkHybrid longLinkErrorCodeMap]: Loaded handler at "/Users/witchan/__handlers__/PDDNetworkHybrid/longLinkErrorCodeMap.js"-[PddRtc titan:didChangeToConnectionStatus:longLinkInfo:]: Loaded handler at "/Users/witchan/__handlers__/PddRtc/titan_didChangeToConnectionStatu_745d0013.js"-[PDDWebConfig htmlLongLinkWhiteListFromConfig]: Loaded handler at "/Users/witchan/__handlers__/PDDWebConfig/htmlLongLinkWhiteListFromConfig.js"-[PDDWebConfig setHtmlLongLinkWhiteList:]: Loaded handler at "/Users/witchan/__handlers__/PDDWebConfig/setHtmlLongLinkWhiteList_.js"-[PDDWebConfig htmlLongLinkWhiteList]: Loaded handler at "/Users/witchan/__handlers__/PDDWebConfig/htmlLongLinkWhiteList.js"-[PDDWebViewManager pdd_setProtocolLongLinkEnable:]: Loaded handler at "/Users/witchan/__handlers__/PDDWebViewManager/pdd_setProtocolLongLinkEnable_.js"-[PDDLiveRoomMicLinkManager registerLongLinkMsgCenter]: Loaded handler at "/Users/witchan/__handlers__/PDDLiveRoomMicLinkManager/registerLongLinkMsgCenter.js"+[PDDTitanNetworkConfig mainLongLinkBackupIps]: Loaded handler at "/Users/witchan/__handlers__/PDDTitanNetworkConfig/mainLongLinkBackupIps.js"+[PDDTitanNetworkConfig multicastLongLinkBackupIps]: Loaded handler at "/Users/witchan/__handlers__/PDDTitanNetworkConfig/multicastLongLinkBackupIps.js"-[AMNetworkInfoManager longLinkInfo]: Loaded handler at "/Users/witchan/__handlers__/AMNetworkInfoManager/longLinkInfo.js"-[AMNetworkInfoManager setLongLinkInfo:]: Loaded handler at "/Users/witchan/__handlers__/AMNetworkInfoManager/setLongLinkInfo_.js"+[AMNetworkInfo longLinkInfo]: Loaded handler at "/Users/witchan/__handlers__/AMNetworkInfo/longLinkInfo.js"+[AMNetworkInfo setLongLinkInfo:]: Loaded handler at "/Users/witchan/__handlers__/AMNetworkInfo/setLongLinkInfo_.js"-[AMHTTPRequest longLinkDowngrade]: Loaded handler at "/Users/witchan/__handlers__/AMHTTPRequest/longLinkDowngrade.js"-[AMHTTPRequest setLongLinkDowngrade:]: Loaded handler at "/Users/witchan/__handlers__/AMHTTPRequest/setLongLinkDowngrade_.js"-[PDDAntManager titan:didChangeToConnectionStatus:longLinkInfo:]: Loaded handler at "/Users/witchan/__handlers__/PDDAntManager/titan_didChangeToConnectionStatu_745d0013.js"-[PDDApiMetricsBaseInfo setIsLongLinkReceived:]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsBaseInfo/setIsLongLinkReceived_.js"-[PDDApiMetricsBaseInfo setLongLinkVip:]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsBaseInfo/setLongLinkVip_.js"-[PDDApiMetricsBaseInfo setLongLinkErrorCode:]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsBaseInfo/setLongLinkErrorCode_.js"-[PDDApiMetricsBaseInfo setLongLinkType:]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsBaseInfo/setLongLinkType_.js"-[PDDApiMetricsBaseInfo isLongLinkReceived]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsBaseInfo/isLongLinkReceived.js"-[PDDApiMetricsBaseInfo longLinkVip]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsBaseInfo/longLinkVip.js"-[PDDApiMetricsBaseInfo longLinkErrorCode]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsBaseInfo/longLinkErrorCode.js"-[PDDApiMetricsBaseInfo longLinkType]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsBaseInfo/longLinkType.js"-[PDDApiMetricsCostInfo setLongLinkSendCost:]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsCostInfo/setLongLinkSendCost_.js"-[PDDApiMetricsCostInfo setLongLinkRecvCost:]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsCostInfo/setLongLinkRecvCost_.js"-[PDDApiMetricsCostInfo setLongLinkServerCost:]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsCostInfo/setLongLinkServerCost_.js"-[PDDApiMetricsCostInfo longLinkSendCost]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsCostInfo/longLinkSendCost.js"-[PDDApiMetricsCostInfo longLinkRecvCost]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsCostInfo/longLinkRecvCost.js"-[PDDApiMetricsCostInfo setLongLinkNetworkCost:]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsCostInfo/setLongLinkNetworkCost_.js"-[PDDApiMetricsCostInfo longLinkServerCost]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsCostInfo/longLinkServerCost.js"-[PDDApiMetricsCostInfo longLinkNetworkCost]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsCostInfo/longLinkNetworkCost.js"-[PDDApiMetricsExtraInfo setLongLinkReportCode:]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsExtraInfo/setLongLinkReportCode_.js"-[PDDApiMetricsExtraInfo setLongLinkStatusCode:]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsExtraInfo/setLongLinkStatusCode_.js"-[PDDApiMetricsExtraInfo setLongLinkTaskId:]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsExtraInfo/setLongLinkTaskId_.js"-[PDDApiMetricsExtraInfo setLongLinkSendSize:]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsExtraInfo/setLongLinkSendSize_.js"-[PDDApiMetricsExtraInfo setLonglinkReceiveSize:]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsExtraInfo/setLonglinkReceiveSize_.js"-[PDDApiMetricsExtraInfo setLongLinkForeground:]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsExtraInfo/setLongLinkForeground_.js"-[PDDApiMetricsExtraInfo setLongLinkUrl:]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsExtraInfo/setLongLinkUrl_.js"-[PDDApiMetricsExtraInfo longLinkReportCode]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsExtraInfo/longLinkReportCode.js"-[PDDApiMetricsExtraInfo longLinkStatusCode]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsExtraInfo/longLinkStatusCode.js"-[PDDApiMetricsExtraInfo isLongLinkForeground]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsExtraInfo/isLongLinkForeground.js"-[PDDApiMetricsExtraInfo longLinkSendSize]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsExtraInfo/longLinkSendSize.js"-[PDDApiMetricsExtraInfo longlinkReceiveSize]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsExtraInfo/longlinkReceiveSize.js"-[PDDApiMetricsExtraInfo longLinkTaskId]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsExtraInfo/longLinkTaskId.js"-[PDDApiMetricsExtraInfo longLinkUrl]: Loaded handler at "/Users/witchan/__handlers__/PDDApiMetricsExtraInfo/longLinkUrl.js"-[PDDApiWaitLonglinkConfig isWaitLonglink:method:]: Loaded handler at "/Users/witchan/__handlers__/PDDApiWaitLonglinkConfig/isWaitLonglink_method_.js"-[AMTitan updateLongLinkHostWhiteList:]: Loaded handler at "/Users/witchan/__handlers__/AMTitan/updateLongLinkHostWhiteList_.js"-[AMTitan updateLongLinkUriBlackList:]: Loaded handler at "/Users/witchan/__handlers__/AMTitan/updateLongLinkUriBlackList_.js"-[AMTitan isLongLinkConnected]: Loaded handler at "/Users/witchan/__handlers__/AMTitan/isLongLinkConnected.js"-[AMTitan makesureLongLinkConnect:]: Loaded handler at "/Users/witchan/__handlers__/AMTitan/makesureLongLinkConnect_.js"-[AMTitan reportStatusChange:longLinkInfo:]: Loaded handler at "/Users/witchan/__handlers__/AMTitan/reportStatusChange_longLinkInfo_.js"-[AMTitan onConnectStatusChange:longLinkStatus:longLinkInfo:]: Loaded handler at "/Users/witchan/__handlers__/AMTitan/onConnectStatusChange_longLinkSt_c4a1163e.js"-[AMTitanBaseRequest setWaitLonglink:]: Loaded handler at "/Users/witchan/__handlers__/AMTitanBaseRequest/setWaitLonglink_.js"-[AMTitanBaseRequest waitLonglink]: Loaded handler at "/Users/witchan/__handlers__/AMTitanBaseRequest/waitLonglink.js"-[AMTitanStnCallback reportConnectStatus:longLinkStatus:longLinkInfo:]: Loaded handler at "/Users/witchan/__handlers__/AMTitanStnCallback/reportConnectStatus_longLinkStat_1d404d83.js"-[AMTitanTask setWaitLonglink:]: Loaded handler at "/Users/witchan/__handlers__/AMTitanTask/setWaitLonglink_.js"-[AMTitanTask waitLonglink]: Loaded handler at "/Users/witchan/__handlers__/AMTitanTask/waitLonglink.js"+[AMTitanTransferUtil transferToLongLinkInfo:]: Loaded handler at "/Users/witchan/__handlers__/AMTitanTransferUtil/transferToLongLinkInfo_.js"
经过一层层筛查打印以上方法的入参和返回值，当修改到[AMTitan updateLongLinkHostWhiteList:]方法时，输出的日志参数，引起了我们的注意，updateLongLinkHostWhiteList_.js代码如下：
{ onEnter(log, args, state) { log(-[AMTitan updateLongLinkHostWhiteList:${new ObjC.Object(args[2])}]); }, onLeave(log, retval, state) { log(-[AMTitan updateLongLinkHostWhiteList:]=${new ObjC.Object(retval)}=); }}
日志输出如下：
-[AMTitan updateLongLinkHostWhiteList:( "apiv2.yangkeduo.com", "apiv3.yangkeduo.com", "apiv4.yangkeduo.com", "apiv2.hutaojie.com", "meta.yangkeduo.com", "api.pinduoduo.com", "api.yangkeduo.com", "apiv5.yangkeduo.com", "mobile.yangkeduo.com", "meta.pinduoduo.com", "m.pinduoduo.net", "api-cj.pinduoduo.com", "api-isp.pinduoduo.com", "risk-data-clean-api.risk.ft.srv.pdd.net")]-[AMTitan updateLongLinkHostWhiteList:]=( "apiv2.yangkeduo.com", "apiv3.yangkeduo.com", "apiv4.yangkeduo.com", "apiv2.hutaojie.com", "meta.yangkeduo.com", "api.pinduoduo.com", "api.yangkeduo.com", "apiv5.yangkeduo.com", "mobile.yangkeduo.com", "meta.pinduoduo.com", "m.pinduoduo.net", "api-cj.pinduoduo.com", "api-isp.pinduoduo.com", "risk-data-clean-api.risk.ft.srv.pdd.net")=
发现关键信息api*.yangkeduo.com，根据方法updateLongLinkHostWhiteList，发现这极有可能是LongLink的接口列表。修改刚的js代码为：
{ onEnter(log, args, state) { args[2] = ObjC.classes.NSMutableArray.array(); // 修改入参为空数组 log(-[AMTitan updateLongLinkHostWhiteList:${new ObjC.Object(args[2])}]); }, onLeave(log, retval, state) { log(-[AMTitan updateLongLinkHostWhiteList:]=${new ObjC.Object(retval)}=); }}
这时，抓包正常工作，结果如下：
End