跟师傅学习的那点事儿--爬虫JS解密练习。
今天遇到了一个点击事件的js加密。
全局搜索AddTab，
找到之后，惊奇的发现，这个js函数仅仅只需要两个参数即可。
将参数传递过来，然后使用execjs模拟执行js，成功拿回加密后的数据。
废话不多说，直接上代码：
js部分的代码：
function AddTab(url,title){
if(url.indexOf('/GDS_GNJZ_NAVIGATE')>-1){
window.open(""+url);
return;
}
if(url.indexOf('/nsrsb')!=-1){
_app.alert("关联企业报表请到20号以后查询!");
return;
}
var ssqqqz=url.substring(url.length-8,url.length);
if(title=="(新)运输发票"){
newstr="/ListYsInvoiceAction_CX.do";
}else if(url.indexOf('Ndsds2019Action')>0 && ssqqqz<=20180101){
newstr=url.replace("Ndsds2019Action","Ndsds2018Action");
}else if(url.indexOf('Ndsds2018Action')>0 && ssqqqz<=20161231){
newstr=url.replace("Ndsds2018Action","Ndsds2014Action");
}else if(url.indexOf('ReportJdAction_2015')>0 && ssqqqz<=20150531){
newstr=url.replace("ReportJdAction_2015","ReportJdAction_2014");
newstr=url.replace("SB_JD_A_2015","SB_JD_A");
}else if(url.indexOf('ReportJdAction_2019')>0 && ssqqqz<20180630){
newstr=url.replace("ReportJdAction_2019","ReportJdAction_2015");
}else if(url.indexOf('ReportYdAction_2019')>0 && ssqqqz<20180630){
newstr=url.replace("ReportYdAction_2019","ReportYdAction_201506");
}else if(url.indexOf('ReportJdAction_2019')>0 && ssqqqz<20190131){
newstr=url.replace("ReportJdAction_2019","ReportJdAction_2018");
}else if(url.indexOf('ReportYdAction_2019')>0 && ssqqqz<20190131){
newstr=url.replace("ReportYdAction_2019","ReportYdAction_2018");
}else if(url.indexOf('ReportYdAction_201506')>0 && ssqqqz<=20150531){
newstr=url.replace("ReportYdAction_201506","ReportYdAction_2014");
newstr=url.replace("SB_YD_A_2015","SB_YD_A");
}else if(url.indexOf('ReportYdGdjszjAction_2015')>0 && ssqqqz<=20150531){
newstr=url.replace("ReportYdGdjszjAction_2015","ReportYdGdjszjAction");
}else if(url.indexOf('ReportYdGdjszjAction_2018')>0 && ssqqqz<20180630){
newstr=url.replace("ReportYdGdjszjAction_2018","ReportYdGdjszjAction_2015");
}else if(url.indexOf('ReportGdjszjAction_2015')>0 && ssqqqz<=20150531){
newstr=url.replace("ReportGdjszjAction_2015","ReportYdAction_2014");
}else if(url.indexOf('ReportGdjszjAction_2018')>0 && ssqqqz<20180630){
newstr=url.replace("ReportGdjszjAction_2018","ReportGdjszjAction_2015");
}else if(url.indexOf('ReportYdGdjszjAction_2016')>0 && ssqqqz<20151231){
newstr=url.replace("ReportYdGdjszjAction_2016","ReportYdGdjszjAction_2015");
}else if(url.indexOf('ReportYdGdjszjAction_2018')>0 && ssqqqz<20180630){
newstr=url.replace("ReportYdGdjszjAction_2018","ReportYdGdjszjAction_2016");
}else if(url.indexOf('JmsdsmxAction_2018')>0 && ssqqqz<20180630){
newstr=url.replace("JmsdsmxAction_2018","JmsdsmxAction_2015");
}else if(url.indexOf('ReportFB1Action_2018')>0 && ssqqqz<20180630){
newstr=url.replace("ReportFB1Action_2018","ReportFB1Action_2015");
}else if(url.indexOf('ReportJdGdjszjAction_2016')>0 && ssqqqz<20151231){
newstr=url.replace("ReportJdGdjszjAction_2016","ReportGdjszjAction_2015");
}else if(url.indexOf('ReportJdGdjszjAction_2018')>0 && ssqqqz<20180630){
newstr=url.replace("ReportJdGdjszjAction_2018","ReportJdGdjszjAction_2016");
}else if(url.indexOf('ReportJdAction_B_2015')>0 && ssqqqz<=20150531){
newstr=url.replace("ReportJdAction_B_2015","ReportJdAction_2014");
newstr=url.replace("SB_JD_2015_B","SB_JD_B");
}else if(url.indexOf('ReportJdAction_B_2018')>0 && ssqqqz<20180630){
newstr=url.replace("ReportJdAction_B_2018","ReportJdAction_B_2015");
}else if(url.indexOf('ReportJdAction_B_2019')>0 && ssqqqz<20190131){
newstr=url.replace("ReportJdAction_B_2019","ReportJdAction_B_2018");
}else if(url.indexOf('ReportYdAction_B_2015')>0 && ssqqqz<=20150531){
newstr=url.replace("ReportYdAction_B_2015","ReportYdAction_2014");
newstr=url.replace("SB_YD_2015_B","SB_YD_B");
}else if(url.indexOf('ReportYdAction_B_2018')>0 && ssqqqz<20180630){
newstr=url.replace("ReportYdAction_B_2018","ReportYdAction_B_2015");
}else if(url.indexOf('ReportYdAction_B_2019')>0 && ssqqqz<20190131){
newstr=url.replace("ReportYdAction_B_2019","ReportYdAction_B_2018");
}else if(url.indexOf('ReportYdFpAction_2014')>0 && ssqqqz<=20140531){
newstr=url.replace("ReportYdFpAction_2014","ReportYdFpAction");
}else if(url.indexOf('ReportYdFpAction_2018')>0 && ssqqqz<20180630){
newstr=url.replace("ReportYdFpAction_2018","ReportYdFpAction_2014");
}else if(url.indexOf('ReportJdFpAction_2014')>0 && ssqqqz<=20140531){
newstr=url.replace("ReportJdFpAction_2014","ReportJdFpAction");
}else if(url.indexOf('ReportJdFpAction_2018')>0 && ssqqqz<20180630){
newstr=url.replace("ReportJdFpAction_2018","ReportJdFpAction_2014");
}else if(url.indexOf('ReportYGZ_Zzs_2016_Action')>0 && ssqqqz<=20160430){//测试为20160331 正常环境应为20160431
newstr=url.replace("ReportYGZ_Zzs_2016_Action","ReportYGZ_ZzsAction");
}else if(url.indexOf('ReportYGZ_ZzsXGM_2016_Action')>0 && ssqqqz<=20160430){//测试为20160331 正常环境应为20160431
newstr=url.replace("ReportYGZ_ZzsXGM_2016_Action","ReportYGZ_ZzsXGMAction");
}else if(url.indexOf('ReportYGZ_Zzs_2018_Action')>0 && ssqqqz<20180531){//测试为20160331 正常环境应为20160431
if(url.indexOf("YGZ_SB_ZZS_2012_FB1")>0 ){
if(ssqqqz<20180131){
newstr=url.replace("ReportYGZ_Zzs_2018_Action","ReportYGZ_Zzs_2016_Action");
}else{
newstr=url.replace("ReportYGZ_Zzs_2018_Action","ReportYGZ_Zzs_2017_Action");
}
}else if(url.indexOf("YGZ_SB_ZZS_2012_FB3")>0){
newstr=url.replace("ReportYGZ_Zzs_2018_Action","ReportYGZ_Zzs_2016_Action");
}
}else if(url.indexOf('ReportYGZ_Zzs_2017_Action')>0 && ssqqqz<20170731){//测试为20160331 正常环境应为20160431
newstr=url.replace("ReportYGZ_Zzs_2017_Action","ReportYGZ_Zzs_2016_Action");
}else if(url.indexOf('ReportYGZ_Zzs_2016_Action')>0 && ssqqqz<=20160430){//测试为20160331 正常环境应为20160431
newstr=url.replace("ReportYGZ_Zzs_2016_Action","ReportYGZ_ZzsAction");
}else if(url.indexOf('ReportNdAction_B_2015')>0 && ssqqqz<=20150101){
newstr=url.replace("ReportNdAction_B_2015","ReportNdAction_2014");
}else if(url.indexOf('ReportZzs_JmsSbMxbAction_2016')>0 && ssqqqz<=20160430){//测试为20160331 正常环境应为20160431
newstr=url.replace("ReportZzs_JmsSbMxbAction_2016","ReportZzs_JmsSbMxbAction");
//2016版财务报表一般企业
}else if(url.indexOf('Sb_Cwbb_2016_Action')>0 && ssqqqz<20160930){
newstr=url.replace("Sb_Cwbb_2016_Action","Sb_Cwbb_2013_Action");
//2016版财务报表银行业
}else if(url.indexOf('Sb_Cwbb_Jrqy_Yh_Action_2016')>0 && ssqqqz<20160930){
newstr=url.replace("Sb_Cwbb_Jrqy_Yh_Action_2016","Sb_Cwbb_Jrqy_Yh_Action");
//2016版财务报表保险业
}else if(url.indexOf('Sb_Cwbb_Jrqy_Bx_Action_2018')>0 && ssqqqz<20180731){
newstr=url.replace("Sb_Cwbb_Jrqy_Bx_Action_2018","Sb_Cwbb_Jrqy_Bx_Action_2016");
//2016版财务报表证券业
}else if(url.indexOf('Sb_Cwbb_Jrqy_Zq_Action_2016')>0 && ssqqqz<20160930){
newstr=url.replace("Sb_Cwbb_Jrqy_Zq_Action_2016","Sb_Cwbb_Jrqy_Zq_Action");
//2016版财务报表小企业
}else if(url.indexOf('Sb_Cwbb_Xqy_Action_2016')>0 && ssqqqz<20160930){
newstr=url.replace("Sb_Cwbb_Xqy_Action_2016","Sb_Cwbb_Xqy_Action");
}else if(url.indexOf('consumptionTaxAction2018')>0 && ssqqqz<20180331){
newstr=url.replace("consumptionTaxAction2018","consumptionTaxAction");
}else{
newstr=url;
}
var URL = ""+newstr;
return URL
}
模拟执行部分的代码：
import execjs
url = '/Cjjjy_Action.do?activity=getData&reportDm=SB_CJJYFJSSB&ssq=YD&fzlx=2&sssq_q=20190201&sssq_z=20190228'
title = '城建税、教育费附加、地方教育附加税(费)申报'
_JS = execjs.compile(open("./sd_sb.js", "r", encoding='utf-8').read()) # 初始化JS
token = _JS.call("AddTab", url, title)
print(token)