目标
看一下评论的请求
抓包
这里使用httpcanary
请求包如下
POST /index.php?r=commentsv2/getCommentWithLike&code=ca53b96fe5a1d9c22d71c8f522ef7c4f&childrenid=collection_3_1069003079_330_0&kugouid=1959585341&ver=10&clienttoken=7123ecc548ec46d37574673793de1c825d9c213736a85283bf4517c71bfdcd90&appid=1005&clientver=10659&mid=255834326356876873930945227799988288305&clienttime=1693566637&key=7b098bdd24e31575d6977ddbd52c619e&uuid=e09ba4f899c6777225b76388a44e41bb&dfid=1tT6n21DUstm011Xnf3a0Llw&gitversion=45ced73&p=1&pagesize=20&show_admin_tags=1 h2
Host: gateway.kugou.com
user-agent: Android810-AndroidPhone-10659-14-0-COMMENT-wifi
kg-thash: 4fc50f7
accept-encoding: gzip, deflate
kg-rc: 1
kg-fake: 1959585341
kg-rf: 009831c9
x-router: m.comment.service.kugou.com
content-length: 0
参数分析
首先看看变化的参数
v1 = "commentsv2/getCommentWithLike&code=ca53b96fe5a1d9c22d71c8f522ef7c4f&childrenid=collection_3_1985146619_68_0&kugouid=1959585341&ver=10&clienttoken=7123ecc548ec46d37574673793de1c82ef5ff5dbe19e27c1f1dd496ef8068914&appid=1005&clientver=10659&mid=334457935609434160207438033358774315577&clienttime=1693573528&key=b697376d876fc22548b636ae3e5ffac6&uuid=289a2994c5d812303781a7f2af74531e&dfid=348EFn2ifiKQ3hFGWR2tVCd9&gitversion=45ced73&p=1&pagesize=20&show_admin_tags=1".split("&")v2 = "commentsv2/getCommentWithLike&code=ca53b96fe5a1d9c22d71c8f522ef7c4f&childrenid=collection_3_1985146619_68_0&kugouid=1959585341&ver=10&clienttoken=7123ecc548ec46d37574673793de1c82ef5ff5dbe19e27c1f1dd496ef8068914&appid=1005&clientver=10659&mid=334457935609434160207438033358774315577&clienttime=1693573554&key=0ee5e09a8270eb43a057de167465b166&uuid=289a2994c5d812303781a7f2af74531e&dfid=348EFn2ifiKQ3hFGWR2tVCd9&gitversion=45ced73&p=1&pagesize=20&show_admin_tags=1".split("&")
for a,b in zip(v1, v2):if a == b:continueelse:print(a, b)
结果如下
clienttime=1693573528 clienttime=1693573554
key=b697376d876fc22548b636ae3e5ffac6 key=0ee5e09a8270eb43a057de167465b166
clienttime是时间戳,那么只要知道key是怎么来的就行了
反编译apk
直接用jadx反编译,使用最新版本的可以不用内存大小。
接着就要看看是不是在java层。首先搜索show_admin_tags试试。
非常好就一处。
public String m() {StringBuffer a2 = o.a("", b(), a(), this.f9765a, "", "", true, f());if (!TextUtils.isEmpty(this.f9766b)) {a2.append("extdata=");a2.append(this.f9766b);a2.append(ContainerUtils.FIELD_DELIMITER);}if (e() == 1) {a2.append("tid=");a2.append(this.f9769e);a2.append(ContainerUtils.FIELD_DELIMITER);}a(a2);a2.append("p=");a2.append(this.f9767c);a2.append(ContainerUtils.FIELD_DELIMITER);if (this.f9768d > 0) {a2.append("pagesize=");a2.append(this.f9768d);a2.append(ContainerUtils.FIELD_DELIMITER);}if (this.i > 0) {a2.append("mixsongid=");a2.append(this.i);a2.append(ContainerUtils.FIELD_DELIMITER);}if (!TextUtils.isEmpty(this.n)) {a2.append("ex_cmtid");a2.append(ContainerUtils.KEY_VALUE_DELIMITER);a2.append(this.n);a2.append(ContainerUtils.FIELD_DELIMITER);}if (!TextUtils.isEmpty(this.j)) {a2.append("cmtreturnserver");a2.append(ContainerUtils.KEY_VALUE_DELIMITER);a2.append(i());a2.append(ContainerUtils.FIELD_DELIMITER);}if (!TextUtils.isEmpty(this.k)) {a2.append("cmtdreturnserver");a2.append(ContainerUtils.KEY_VALUE_DELIMITER);a2.append(j());a2.append(ContainerUtils.FIELD_DELIMITER);}if ("ca53b96fe5a1d9c22d71c8f522ef7c4f".equals(a())) {a2.append("show_admin_tags");a2.append(ContainerUtils.KEY_VALUE_DELIMITER);a2.append("1");a2.append(ContainerUtils.FIELD_DELIMITER);}Long g = g();if (g != null) {a2.append("user_id=");a2.append(g);a2.append(ContainerUtils.FIELD_DELIMITER);}String l = l();if (!TextUtils.isEmpty(l)) {a2.append("godk=");a2.append(l);a2.append(ContainerUtils.FIELD_DELIMITER);}if (!TextUtils.isEmpty(this.l)) {a2.append("session=");a2.append(by.b(this.l));a2.append(ContainerUtils.FIELD_DELIMITER);}if (this.q) {a2.append("show_weightlist=1&");}if (this.r) {a2.append("show_replys=1&");}if (!TextUtils.isEmpty(this.f9770f)) {a2.append(this.f9770f);}return o.a(a2);}
先来hook一下试试m方法。
function my_g(){let g = Java.use("com.kugou.android.app.common.comment.b.g");g["m"].implementation = function () {console.log('m is called');let ret = this.m();console.log('m ret value is ' + ret);return ret;};}
# m is called
# m ret value is r=commentsv2/getCommentWithLike&code=ca53b96fe5a1d9c22d71c8f522ef7c4f&childrenid=collection_3_1985146619_68_0&kugouid=1959585341&ver=10&clienttoken=7123ecc548ec46d37574673793de1c82ef5ff5dbe19e27c1f1dd496ef8068914&appid=1005&clientver=10659&mid=334457935609434160207438033358774315577&clienttime=1693573528&key=b697376d876fc22548b636ae3e5ffac6&uuid=289a2994c5d812303781a7f2af74531e&dfid=348EFn2ifiKQ3hFGWR2tVCd9&gitversion=45ced73&p=1&pagesize=20&show_admin_tags=1
确实如此,但m函数代码里并没有出现key, 所以看看StringBuffer a2 = o.a(“”, b(), a(), this.f9765a, “”, “”, true, f());
跟一下就知道了。
key的加密方式
是md5,如何确定参数呢
贴一下hook代码比对下参数就行了
# -*- coding: utf-8 -*-
# @Time : 27/8/2023 下午 1:32
# @Author : 明月清风我
# @File : main.py
# @Software: PyCharm
import frida, sys
import os
import reos.system("adb forward tcp:27042 tcp:27042")
os.system("adb forward tcp:27043 tcp:27043")def on_message(message, data):if message['type'] == 'send':print("[*] {0}".format(message['payload']))else:print(message)rdev = frida.get_remote_device()
front_app = rdev.get_frontmost_application()
print(front_app)
pid = re.findall(r'pid=(\d+)', str(front_app))[0]
jscode_hook = """console.log("Enter the Script!");function my_g(){let g = Java.use("com.kugou.android.app.common.comment.b.g");g["m"].implementation = function () {console.log('m is called');let ret = this.m();console.log('m ret value is ' + ret);return ret;};}function my_a(){let o = Java.use("com.kugou.android.app.common.comment.b.o");let ba = Java.use("com.kugou.common.utils.ba");ba["a"].overload('java.lang.String').implementation = function (str) {console.log('a is called' + ', ' + 'str: ' + str);let ret = this.a(str);console.log('a ret value is ' + ret);return ret;};}function br_a(){let br = Java.use("com.kugou.common.utils.br");br["a"].overload('[Ljava.lang.Object;').implementation = function (objArr) {console.log('br_a is called' + ', ' + 'objArr: ' + objArr);let ret = this.a(objArr);console.log('br_a ret value is ' + ret);return ret;};}Java.perform(function () {my_a();br_a();my_g();});"""
process = frida.get_usb_device().attach(int(pid))
script = process.create_script(jscode_hook)
script.on('message', on_message)
print('[*] Hook Start Running')
script.load()
sys.stdin.read()
对于同一首歌曲只会改变clienttime
python复现
import hashlib
import time
import requestsdef hash_md5(s):return hashlib.md5(s.encode()).hexdigest()
timeStamp = str(int(time.time()))s = "1005OIlwieks28dk2k092lksi2UIkp10659{}334457935609434160207438033358774315577".format(timeStamp)
key = hash_md5(s)url = "https://gateway.kugou.com/index.php?r=commentsv2/getCommentWithLike&code=ca53b96fe5a1d9c22d71c8f522ef7c4f&childrenid=collection_3_1069003079_330_0&kugouid=1959585341&ver=10&clienttoken=7123ecc548ec46d37574673793de1c825d9c213736a85283bf4517c71bfdcd90&appid=1005&clientver=10659&mid=255834326356876873930945227799988288305&clienttime=1693566637&key={}&uuid=e09ba4f899c6777225b76388a44e41bb&dfid=1tT6n21DUstm011Xnf3a0Llw&gitversion=45ced73&p=1&pagesize=20&show_admin_tags=1".format(key)
headers = {"Host": "gateway.kugou.com","user-agent": "Android810-AndroidPhone-10659-14-0-COMMENT-wifi","x-router": "m.comment.service.kugou.com"
}
response = requests.post(url, headers=headers).text
print(response)