import frida #导入frida模块
import sys #导入sys模块
jscode = """ #从此处开始定义用来Hook的javascript代码
Java.perform(function(){
var MainActivity = Java.use('com.example.testfrida.MainActivity'); //获得MainActivity类
MainActivity.testFrida.implementation = function(){ //Hook testFrida函数,用js自己实现
send('Statr! Hook!'); //发送信息,用于回调python中的函数
return 'Change String!' //劫持返回值,修改为我们想要返回的字符串
}
});
"""
def on_message(message,data): #js中执行send函数后要回调的函数
print(message)
process = frida.get_remote_device().attach('com.example.testfrida') #得到设备并劫持进程com.example.testfrida(该开始用get_usb_device函数用来获取设备,但是一直报错找不到设备,改用get_remote_device函数即可解决这个问题)
script = process.create_script(jscode) #创建js脚本
script.on('message',on_message) #加载回调函数,也就是js中执行send函数规定要执行的python函数
script.load() #加载脚本
sys.stdin.read()
/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class com_example_fridaso_FridaSoDefine */
#ifndef _Included_com_example_fridaso_FridaSoDefine
#define _Included_com_example_fridaso_FridaSoDefine
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class: com_example_fridaso_FridaSoDefine
* Method: FridaSo
* Signature: (II)I
*/
JNIEXPORT jint JNICALL Java_com_example_fridaso_FridaSoDefine_FridaSo(JNIEnv *env, jclass obj, jint a, jint b)
{
int c;
c = a + b;
return c;
}
#ifdef __cplusplus
}
#endif
#endif
import frida
import sys
jscode = """
Java.perform(function(){
//下面这一句代码是指定要Hook的so文件名和要Hook的函数名,函数名就是上面IDA导出表中显示的那个函数名
Interceptor.attach(Module.findExportByName("libfridaso.so","Java_com_example_fridaso_FridaSoDefine_FridaSo"),{
//onEnter: function(args)顾名思义就是进入该函数前要执行的代码,其中args是传入的参数,一般so层函数第一个参数都是JniEnv,第二个参数是jclass,从第三个参数开始才是我们java层传入的参数
onEnter: function(args) {
send("Hook start");
send("args[2]=" + args[2]); //打印我们java层第一个传入的参数
send("args[3]=" + args[3]); //打印我们java层传入的第二个参数
},
onLeave: function(retval){ //onLeave: function(retval)是该函数执行结束要执行的代码,其中retval参数即是返回值
send("return:"+retval); //打印返回值
retval.replace(0); //替换返回值为0
}
});
});
"""
def printMessage(message,data):
if message['type'] == 'send':
print('[*] {0}'.format(message['payload']))
else:
print(message)
process = frida.get_remote_device().attach('com.example.fridaso')
script = process.create_script(jscode)
script.on('message',printMessage)
script.load()
sys.stdin.read()
/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class com_example_fridasostring_fridaSoString */
/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class com_example_fridasostring_fridaSoString */
#ifndef _Included_com_example_fridasostring_fridaSoString
#define _Included_com_example_fridasostring_fridaSoString
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class: com_example_fridasostring_fridaSoString
* Method: FridaSo
* Signature: (Ljava/lang/String;)Ljava/lang/String;
*/
JNIEXPORT jstring JNICALL Java_com_example_fridasostring_fridaSoString_FridaSo(JNIEnv *env, jclass obj, jstring str)
{
return str;
}
#ifdef __cplusplus
}
#endif
#endif
import frida
import sys
jscode = """
Java.perform(function(){
Interceptor.attach(Module.findExportByName("libfridaso.so","Java_com_example_fridasostring_fridaSoString_FridaSo"),{
onEnter: function(args) {
send("Hook start");
send("args[2]=" + args[2]);
},
onLeave: function(retval){
send("return:"+retval);
var env = Java.vm.getEnv(); //获取env对象,也就是native函数的第一个参数
var jstrings = env.newStringUtf("tamper"); //因为返回的是字符串指针,使用我们需要构造一个newStringUtf对象,用来代替这个指针
retval.replace(jstrings); //替换返回值
}
});
});
"""
def printMessage(message,data):
if message['type'] == 'send':
print('[*] {0}'.format(message['payload']))
else:
print(message)
process = frida.get_remote_device().attach('com.example.fridasostring')
script = process.create_script(jscode)
script.on('message',printMessage)
script.load()
sys.stdin.read()
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