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Frida Python库使用

启动 Frida 服务​

包名附加​

import frida, sys

jsCode = """ ...... """
process = frida.get_usb_device().attach('com.dodonew.online')
script = process.create_script(jsCode)
script.load()
sys.stdin.read()

pid 附加​

process = frida.get_usb_device().attach(1234) # 1234 pid

spawn 方式启动​

device = frida.get_usb_device()
pid = device.spawn(["com.dodonew.online"])    # 以挂起方式创建进程
process = device.attach(pid)
script = process.create_script(jsCode)
script.load()
device.resume(pid)  # 加载完脚本, 恢复进程运行
sys.stdin.read()

连接非标准端口​

process = frida.get_device_manager().add_remote_device('192.168.3.68:8888').attach('com.dodonew.online')

连接多个设备​

process = frida.get_device_manager().add_remote_device('192.168.3.68:8888').attach('com.dodonew.online')
script = process.create_script(jsCode)
script.load()
process1 = frida.get_device_manager().add_remote_device('192.168.3.69:8888').attach('com.dodonew.online')
script1 = process.create_script(jsCode)
script1.load()
sys.stdin.read()

frida 与 Python 的交互​

# -*- coding: UTF-8 -*-
import frida, sys

jsCode = """"""


def onMessage(message, data):
    # print(message)
    # {'type': 'send', 'payload':'some strings'}
    if message["type"] == 'send':
        print(u"[*] {0}".format(message['payload']))
    else:
        print(message)


process = frida.get_usb_device().attach('com.dodonew.online')
script = process.create_script(jsCode)
script.on('message', onMessage)
script.load()
sys.stdin.read()

在 jscode 中可以使用send(data)，将数据传入到 onMessage 回调函数中处理。

recv 与 script.post​

在 js 端中可以通过 send 向 python 发送数据，而 python 要向 js 发送数据则需要使用 script.post，js 中使用 recv 来接收，演示代码如下

jsCode = """
    Java.perform(function(){
        var Utils = Java.use('com.dodonew.online.util.Utils');
        Utils.md5.implementation = function(a){
            console.log('MD5 string: ', a);
            var retval = this.md5(a);
            send(retval);
            recv(function(obj){
                console.log(JSON.stringify(obj));
                retval = obj.data;
            }).wait();
            return retval;
        }
    });
"""


def onMessage(message, data):
   print(message)
   if message["type"] == 'send':
       print(u"[*] {0}".format(message['payload']))
       time.sleep(10)
       script.post({"data": "a123456"})
   else:
       print(message)

算法转发​

rpc.exports 与 script.exports​

js 端：rpc.exports = { func: func}

python 端：script.exports.func()/script.exports.FUNC()

注: 如果 js 导出函数中包含驼峰命名，则 python 需要将大写替换成_小写，如 getUser => get_user


jsCode = """
    function md5(data){
        var result = "";
        Java.perform(function(){
            result = Java.use('com.dodonew.online.util.Utils').md5(data);
        });
        return result;
    }

    rpc.exports = {
        md5: md5
    };
"""


result = script.exports.md5('a123456')
print(result)

使用 fastapi 搭建接口​

from fastapi import FastAPI
import uvicorn
import frida

jsCode = """
    function enc(data){
        var result;
        Java.perform(function(){
            // 主动调用难以复现的加密算法,将结果返回
            result = "a123456" + data;
        });
        return result;
    }
    rpc.exports = {
        enc: enc
    };
"""

process = frida.get_device_manager().add_remote_device('192.168.3.68:27042').attach("com.dodonew.online")
script = process.create_script(jsCode)
script.load()


app = FastAPI()

@app.get("/getEnc")
async def getEnc(username=None, password=None):
    result = script.exports.enc({username: username, password: password})
    return {"result": result}

class Item(BaseModel):
    username: str = None
    password: str = None

@app.post("/getEnc")
async def getEncPost(postData: Item):
    result = script.exports.enc(postData)
    return {"result": result}

if __name__ == '__main__':
    uvicorn.run(app, port = 8080)

http 发送 get 请求 如 http://127.0.0.1:8080/getEnc?username=wenhao&password=a123456，即可得到enc调用后的结果，post请求同理