day04-逆向基础案例

一 抓包逆向案例

1.1 金树林.apk

1.1.1 目标

# 发送验证码
# 注册
# 登录
# 登录后查询红酒

1.1.2 发送验证码

import requests

res=requests.get('https://miappshop.jshulin.com/memberLogin/phoneCode?phone=%s&serviceType=5'%'18953675222',verify=False)
print(res.text)

1.1.3 注册

data = {"phone": "18953675222", "fid": "", "password": "lqz12345", "phoneCode": "147426"}
res = requests.post('https://miappshop.jshulin.com/memberLogin/memberRegister', json=data, verify=False)
print(res.text)

1.1.4 登录

import requests

data={"password":"1234567","username":"189536754431"}
res=requests.post('https://miappshop.jshulin.com/memberLogin/login',json=data,verify=False)
print(res.text)

1.1.5 登录后查询红酒

data = {"cityNo": "", "limit": 10, "orderByContent": "", "page": 1, "productCategoryId": "1649599340962672642",
        "enabled": 1}
s='''
Mobile-Token	eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJhdWQiOiIxNjcwODM4OTQ0MDY3ODU0MzM4IiwiZXhwIjoxNjg3MTk3NjIxLCJpYXQiOjE2ODcxOTQwMjEsInVzZXJJZCI6IjE2NzA4Mzg5NDQwNjc4NTQzMzgiLCJ1c2VybmFtZSI6IjE4OTUzNjc1MjIxIn0.QUvl4Gqbri-btL0HUbcfuQYvwtF3Flg4Y4DDJ6S6UPY
user-agent	Mozilla/5.0 (Linux; Android 11; Pixel 2 XL Build/RP1A.201005.004.A1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 uni-app Html5Plus/1.0 (Immersed/28.0)
Content-Type	application/json
'''
header=header_str_to_dict(s)
res = requests.post('https://miappshop.jshulin.com/pro/searchByPage',json=data,verify=False,headers=header)
print(res.json())


def header_str_to_dict(header_str):
    res = [item for item in header_str.split('\n')]
    res = res[1:len(res) - 1]

    d = {item.split('\t')[0]: item.split('\t')[1] for item in res}
    return d

1.1.6 补充(请求参数转字典,请求头转字典)

# 今日南川app登录

s='appId=32&hashSign=8356ebae71a0aa643f87ad4c5691a456&imgUrl=&lat=29.568295&lng=106.559123&loginName=18953675222&nickName=&openId=&place=%E9%87%8D%E5%BA%86&pwd=25d55ad283aa400af464c76d713c07ad&sessionId=392032c5-09c8-4c3c-bb17-16a1dc49f7fc&token=&type='

## 格式转化成字典
def query_to_dict(s):
    return { item.split('=')[0]:item.split('=')[1]for item in s.split('&')}
print(query_to_dict(s))

from urllib.parse import parse_qs, unquote
def parse(s: str) -> dict:
    return {k: v[0] for k, v in parse_qs(s).items()}

print(parse(s))



### 请求头转字典
def header_str_to_dict(header_str):
    res = [item for item in
           header_str.split('\n')]  # ['user-agent	chuangqi.o.137.com.iqilu.app137/0.0.28.108','accept	*/*']
    # print(res)
    res = res[1:len(res) - 1]  # 把列表前后空格去掉

    d = {item.split('\t')[0]: item.split('\t')[1] for item in res}
    return d

1.1.7 补充 url编码解码

from urllib import parse
print(parse.quote('上海'))
print(parse.unquote('%E4%B8%8A%E6%B5%B7'))

1.1.8 补充接码平台

# 免费收费大全
https://w3h5.com/post/619.html
    
# 例如 接收中国短信（免费的不稳定）
https://www.goinsms.xyz/cn.php
https://smscoders.com/china_phones
# 自行找收费的，注意别被骗，收费的都会带api接口

1.2 爱安丘.apk

1.2.1 目标

#1 发送验证码登录（抓包）
#2 用户名密码登录（反编译，逆向加密函数）
# 注意：新版爱安丘加入了客户端证书校验，无法抓包，解决方案：LSposed + JustTrustMe
	-官网下载：LSposed https://github.com/LSPosed/LSPosed/releases
    -使用面具刷入
    -安装JustTrustMe
    -开启重启即可

1.2.2 IMEI

IMEI（International Mobile Equipment Identity）是【国际移动设备识别码】的缩写，它是一个唯一标识符，用于识别移动设备，如手机、平板电脑等。IMEI由15位数字组成，每一位都有特定的含义

# IMEI的规则如下：
前六位（TAC）：型号核准号码，用于识别设备的制造商和设备类型。
接下来的两位（FAC）：最终装配代码，表示设备的最终装配站。
后面的六位（SNR）：串号，表示设备的序列号。
最后一位（SP）：校验位，用于验证IMEI的有效性


def generate_imei():  # 跟useragent类似，要变换一下
    # # 生成随机的TAC（前六位）
    tac = ''.join(random.choices('0123456789', k=6))

    # 生成随机的FAC（接下来的两位）
    fac = ''.join(random.choices('0123456789', k=2))

    # 生成随机的SNR（后面的六位）
    snr = ''.join(random.choices('0123456789', k=6))

    # 计算校验位
    imei_base = tac + fac + snr
    imei_list = [int(digit) for digit in imei_base]
    check_digit = sum(imei_list[::-2] + [sum(divmod(d * 2, 10)) for d in imei_list[-2::-2]]) % 10

    # 生成最终的IMEI
    imei = imei_base + str((10 - check_digit) % 10)

    return imei
    # return "".join(random.choices('0123456789abcdef', k=15))

1.2.3 验证码登录(老版本v228)

import random
import requests


from utils import generate_imei


imei = generate_imei()
print(imei)

session = requests.Session()
session.cookies.set("orgid", "137")
session.headers.update({
    "cq-agent": '{"os":"android","imei":"%s","osversion":"6.0.1","network":"none","version":"0.0.28.108","core":"1.6.4"}' % imei,
    "user-agent": "chuangqi.o.137.com.iqilu.app137/0.0.28.108",
    "orgid": "137"
})

phone_num = input("请输入手机号：")

res = session.post(
    url="https://app-auth.iqilu.com/member/phonecode",
    json={
        "phone": phone_num
    },
    verify=False
)
res_dict = res.json()
print(res_dict)
key = res_dict['data']
code = input("请输入手机接收到的验证码：")

res = session.post(
    url="https://app-auth.iqilu.com/member/login",
    json={
        "phone": phone_num,
        "code": code,
        "key": key,
        "password": "",
        "captcha": "",
        "captchaKey": ""
    },verify=False
)
print("登录结果->", res.text)

1.2.4 验证码接收

1.2.5 手机号密码登录（新版本最新版）

反编译，找位置(根据地址：member/login)

hook.py

####1 手机端启动frida-serve
adb shell
su
cd /data/local/tmp/
ls
./frida-server-16.0.19-android-arm64 

####2 设置端口转发
adb forward tcp:27042 tcp:27042
adb forward tcp:27043 tcp:27043

# 3 前台运行的包名

  # 枚举手机上的所有进程 & 前台进程
  import frida
  # 获取设备信息
  rdev = frida.get_remote_device()
  # 枚举所有的进程
  processes = rdev.enumerate_processes()
  for process in processes:
      print(process)
  # 获取在前台运行的APP
  front_app = rdev.get_frontmost_application()
  print(front_app)
##############################

# 4 hook

import frida
import sys

# 连接手机设备
rdev = frida.get_remote_device()

session = rdev.attach("爱安丘")

scr = """
Java.perform(function () {

    // 包.类
    var EncryptUtil = Java.use("com.iqilu.core.util.EncryptUtil");

    EncryptUtil.getMD5.implementation = function(str){
        console.log("明文：",str);
        var res = this.getMD5(str);
        console.log("md5加密结果=",res);
        return res;
    }

});
"""

script = session.create_script(scr)


def on_message(message, data):
    print(message, data)


script.on("message", on_message)

script.load()
sys.stdin.read()

用户名密码登录代码

import requests
from utils import generate_imei, header_str_to_dict, encrypt_data

session = requests.session()
imei = generate_imei()
header_s = '''
encrypt	1
version	1.0.5
orgid	137
User-Agent	null chuangqi.o.137.com.iqilu.app137/1.0.5
platform	android
imei	bae6495482efee22
CQ-AGENT	{"os":"android","brand":"google","imei":"%s","osversion":"11","network":"unknown","version":"1.0.5","core":"2.2.1.1"}
cq-token	
Content-Type	application/json; charset=UTF-8
Content-Length	93
Host	app-auth.iqilu.com
Connection	Keep-Alive
Accept-Encoding	gzip
Cookie	orgid=137
''' % imei
header = header_str_to_dict(header_s)
phone = input('请输入手机号：')
password = input('请输入密码：')

password = encrypt_data(password)
data = {"codeKey": "", "password": password, "code": "", "phone": phone, "key": ""}
res = session.post('https://app-auth.iqilu.com/member/login?e=1', headers=header, json=data,verify=False)
print(res.text)

utils.py

import random
from Crypto.Cipher import AES
import base64


def generate_imei():
    # 生成随机的TAC（前六位）
    tac = ''.join(random.choices('0123456789', k=6))

    # 生成随机的FAC（接下来的两位）
    fac = ''.join(random.choices('0123456789', k=2))

    # 生成随机的SNR（后面的六位）
    snr = ''.join(random.choices('0123456789', k=6))

    # 计算校验位
    imei_base = tac + fac + snr
    imei_list = [int(digit) for digit in imei_base]
    check_digit = sum(imei_list[::-2] + [sum(divmod(d * 2, 10)) for d in imei_list[-2::-2]]) % 10

    # 生成最终的IMEI
    imei = imei_base + str((10 - check_digit) % 10)

    return imei
	# return "".join(random.choices('0123456789abcdef', k=16))


def query_to_dict(s):
    return {item.split('=')[0]: item.split('=')[1] for item in s.split('&')}


def header_str_to_dict(header_str):
    res = [item for item in header_str.split('\n')]
    res = res[1:len(res) - 1]

    d = {item.split('\t')[0]: item.split('\t')[1] for item in res}
    return d




# 加密的字符串，必须是固定长度，处理成固定长度
def pad_data(data):
    # 计算需要填充的字节数
    pad_len = AES.block_size - (len(data) % AES.block_size)
    # 使用填充字节进行填充
    padding = bytes([pad_len] * pad_len)
    padded_data = data + padding
    return padded_data



def encrypt_data(password):
    # 创建 AES 密码对象
    # cipher = AES.new(key, AES.MODE_CBC, iv)
    # 密钥（16 字节）
    key = b'6d6656a37cdb7977c10f6d83cab168e9'
    # 初始化向量（16 字节）
    iv = b'0000000000000000'
    cipher = AES.new(key, AES.MODE_CBC, iv)
    # 填充数据
    padded_data = pad_data(password.encode('utf-8'))
    print(padded_data)
    # 加密数据
    encrypted_data = cipher.encrypt(padded_data)
    return base64.b64encode(encrypted_data).decode('utf-8')


if __name__ == '__main__':
    print(encrypt_data('1234567'))
    # qV+iHZqcr+cEWpKgOoDx8g==
    # qV+iHZqcr+cEWpKgOoDx8g==

二 抓包反编译案例

2.1 X大夫

2.1.1 目录

# 模拟登录

2.1.2 操作步骤

#1 请求地址
https://api.niaodaifu.cn/v4/site/loginnew
#2 请求体
devisetoken	1507bfd3f6dd1eafc0f
password	lqz12345
mobile	18953675222
channel	android
sign	afc1963626ccdb43d5b394017b206144
time	1687255476
mechanism	0
platform	1

#3 感觉，需要逆向的请求体中的字段devisetoken和sign，去掉devisetoken重新发包，发现正常响应，所以只需要逆向sign

#4  jadx打开X大夫

#5  搜索内容是："sign"
#6 核心代码如下
# 获取当前秒级别的时间戳
    long currentTimeMillis = System.currentTimeMillis() / 1000;
    SafeUtils.getSign(currentTimeMillis)

# 6 代码如下 SafeUtils.getSign
   public static String getSign(long j) {
        try {
            MessageDigest instance = MessageDigest.getInstance("MD5");
            String substring = HexDump.toHex(instance.digest(("niaodaifu" + j).getBytes())).substring(12, 30);
            String substring2 = HexDump.toHex(instance.digest((channel + j).getBytes())).substring(12, 26);
            return substring + substring2;
        } catch (Exception unused) {
            return "";
        }
    }
# 7 转成python 代码为：
import hashlib


def md5(data_string):
    obj = hashlib.md5()
    obj.update(data_string.encode('utf-8'))
    return obj.hexdigest()

j = "1687256602"

v1 = md5(f"niaodaifu{j}")[12:30]
v2 = md5(f"android{j}")[12:26]
sign = v1 + v2
print(sign)

2.2.3 实现代码

import requests
from utils import query_to_dict
import time
import hashlib


def md5(data_string):
    obj = hashlib.md5()
    obj.update(data_string.encode('utf-8'))
    return obj.hexdigest()


def get_sign():
    t = int(time.time())
    v1 = md5(f"niaodaifu{t}")[12:30]
    v2 = md5(f"android{t}")[12:26]
    sign = v1 + v2
    return sign


print(get_sign())

phone = input('请输入手机号：')
password = input('请输入密码：')
sign = get_sign()
print('----',sign)
q = 'password=%s&mobile=%s&channel=android&sign=%s&time=%s&mechanism=0&platform=1' % (
    password, phone, sign,int(time.time()))
data = query_to_dict(q)

res = requests.post('https://api.niaodaifu.cn/v4/site/loginnew', json=data, verify=False)
print(res.json())

2.2 油联合伙人

2.2.1 目标

# 登录

2.2.2 密码破解操作步骤

# 1 抓包
	-请求地址：https://chinayltx.com/app/api/v1/partnerLogin/login
    -请求体：
        phone	18953675222
        password	166acc691782f077c5c7c7c10fa39b1c
    -请求头：
    	X-App	native
        X-Noncestr	123456
        X-OS	partnerApp_android
        X-Req-Time	1687258564222
        X-Sign	869a52194c795e272475b4e50d4e80fa
        X-Token	
        X-UserID	
        Content-Type	application/x-www-form-urlencoded
        Content-Length	59
        Host	chinayltx.com
        Connection	Keep-Alive
        Accept-Encoding	gzip
        User-Agent	okhttp/3.10.0
 # 2 逆向
	根据 请求地址搜索： partnerLogin/login
    
 # 3 代码如下（使用了Retrofit2 模块，发送请求的，@ 是java的注解）
    @FormUrlEncoded
    @POST("api/v1/partnerLogin/login")
    Observable<HttpResult<LoginInfo>> submitLogin(@Field("phone") String str, @Field("password") String str2);
 # 4 只要 类名.submitLogin("18953675222","lqz12345"),就会向api/v1/partnerLogin/login发送请求，使用FormUrlEncoded编码格式
# 5 查找用例submitLogin
# 6 找到loginWithToken---》使用查找用例找不到，直接全局搜索
# 7 找到buildObservable
 	@Override // com.yltx.oil.partner.mvp.domain.UseCase
    public Observable<HttpResult<LoginInfo>> buildObservable() {
        return this.mRepository.loginWithToken(this.name, this.pwd);
    }

# 8 查找密码设置位置
   public void submitLogin(String str, String str2) {
        this.mLoginUseCase.setName(str);
        this.mLoginUseCase.setPwd(Md5.md5(str2));
        this.mLoginUseCase.execute(new LoginSubscriber(this.view));
    }
# 9 确认是md5

2.2.3 签名的破解步骤

# 1 搜索 X-Sign
# 2 当前类中找哪里使用：private static final String PARAM_SIGN = "X-Sign";
# 3 找到getRequestHeaders方法
    public Headers getRequestHeaders(Headers headers) {
        Headers.Builder newBuilder = headers.newBuilder();
        newBuilder.add(PARAM_APP, this.appType);
        newBuilder.add(PARAM_NONCESTR, this.noncestr);
        newBuilder.add(PARAM_OS, this.clientType);
        newBuilder.add(PARAM_REQ_TIME, this.reqTime);
        newBuilder.add(PARAM_SIGN, this.sign);
        newBuilder.add(PARAM_TOKEN, this.token);
        newBuilder.add(PARAM_USER_ID, this.userId);
        return newBuilder.build();
    }
# 4 根据this.sign 找到
 private String sign(String str) {
        return Md5.md5(this.token + this.reqTime + this.noncestr.substring(2) + str).toLowerCase();
    }

# 5 使用python编写
import hashlib

token = ""
reqTime = "1657201079926"
nonce_str = "123456"
nonce_str_sub_2 = nonce_str[2:]
body_string = "phone=18630099999&password=4297f44b13955235245b2497399d7a93"

encrypt_string = f"{token}{reqTime}{nonce_str_sub_2}{body_string}"

obj = hashlib.md5()
obj.update(encrypt_string.encode('utf-8'))
res = obj.hexdigest()
print(res)

2.2.4自动登录代码如下

import requests
import hashlib
import time

phone = input('请输入手机号')
password = input('请输入密码')


def get_md5(data_string):
    obj = hashlib.md5()
    obj.update(data_string.encode('utf-8'))
    return obj.hexdigest()


password = get_md5(password)
data = {
    'phone': phone,
    'password': password
}
token = ''
req_time = str(int(time.time() * 1000))
nonce_str = "123456"
nonce_str_sub_2 = nonce_str[2:]
body_string = f"phone={phone}&password={password}"
sign = encrypt_string = f"{token}{req_time}{nonce_str_sub_2}{body_string}"
sign = get_md5(encrypt_string)

header = {
    "X-App": "native",
    "X-Noncestr": nonce_str,
    "X-OS": "partnerApp_android",
    "X-Req-Time": req_time,
    "X-Sign": sign,
    "X-Token": token,
    "X-UserID": ""
}
res = requests.post('https://chinayltx.com/app/api/v1/partnerLogin/login', data=data, verify=False, headers=header)

print(res.text)