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# Tutorial de Frida
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< details >
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< summary > < strong > Aprenda hacking no AWS do zero ao herói com< / strong > < a href = "https://training.hacktricks.xyz/courses/arte" > < strong > htARTE (HackTricks AWS Red Team Expert)< / strong > < / a > < strong > !< / strong > < / summary >
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* **Junte-se ao grupo** 💬 [**Discord** ](https://discord.gg/hRep4RUj7f ) ou ao grupo [**telegram** ](https://t.me/peass ) ou **siga-me** no **Twitter** 🐦 [**@carlospolopm** ](https://twitter.com/carlospolopm )**.**
* **Compartilhe suas técnicas de hacking enviando PRs para os repositórios github do** [**HackTricks** ](https://github.com/carlospolop/hacktricks ) e [**HackTricks Cloud** ](https://github.com/carlospolop/hacktricks-cloud ).
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< / details >
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< figure > < img src = "../../../.gitbook/assets/i3.png" alt = "" > < figcaption > < / figcaption > < / figure >
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**Dica para bug bounty**: **inscreva-se** no **Intigriti** , uma plataforma premium de **bug bounty criada por hackers, para hackers** ! Junte-se a nós em [**https://go.intigriti.com/hacktricks** ](https://go.intigriti.com/hacktricks ) hoje mesmo e comece a ganhar recompensas de até ** $100,000**!
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{% embed url="https://go.intigriti.com/hacktricks" %}
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## Instalação
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Instale as **ferramentas frida** :
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```bash
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pip install frida-tools
pip install frida
```
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**Baixe e instale** no android o **frida server** ([Baixe a última versão](https://github.com/frida/frida/releases)).\
Linha única para reiniciar o adb em modo root, conectar-se a ele, fazer upload do frida-server, dar permissões de execução e executá-lo em segundo plano:
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{% code overflow="wrap" %}
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```bash
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adb root; adb connect localhost:6000; sleep 1; adb push frida-server /data/local/tmp/; adb shell "chmod 755 /data/local/tmp/frida-server"; adb shell "/data/local/tmp/frida-server & "
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```
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```
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{% endcode %}
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**Verifique** se está **funcionando** :
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```
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```bash
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frida-ps -U #List packages and processes
frida-ps -U | grep -i < part_of_the_package_name > #Get all the package name
```
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## Tutoriais
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### [Tutorial 1](frida-tutorial-1.md)
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**De**: [https://medium.com/infosec-adventures/introduction-to-frida-5a3f51595ca1 ](https://medium.com/infosec-adventures/introduction-to-frida-5a3f51595ca1 )\
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**APK**: [https://github.com/t0thkr1s/frida-demo/releases ](https://github.com/t0thkr1s/frida-demo/releases )\
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**Código Fonte**: [https://github.com/t0thkr1s/frida-demo ](https://github.com/t0thkr1s/frida-demo )
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Siga o [link para ler ](frida-tutorial-1.md ).
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### [Tutorial 2](frida-tutorial-2.md)
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**De**: [https://11x256.github.io/Frida-hooking-android-part-2/ ](https://11x256.github.io/Frida-hooking-android-part-2/ ) (Partes 2, 3 & 4)\
**APKs e Código Fonte**: [https://github.com/11x256/frida-android-examples ](https://github.com/11x256/frida-android-examples )
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Siga o [link para ler ](frida-tutorial-2.md ).
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### [Tutorial 3](owaspuncrackable-1.md)
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**De**: [https://joshspicer.com/android-frida-1 ](https://joshspicer.com/android-frida-1 )\
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**APK**: [https://github.com/OWASP/owasp-mstg/blob/master/Crackmes/Android/Level\_01/UnCrackable-Level1.apk ](https://github.com/OWASP/owasp-mstg/blob/master/Crackmes/Android/Level\_01/UnCrackable-Level1.apk )
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Siga o [link para ler ](owaspuncrackable-1.md ).\
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**Você pode encontrar alguns scripts Frida incríveis aqui:** [**https://codeshare.frida.re/** ](https://codeshare.frida.re )
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## Exemplos Rápidos
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Aqui você pode encontrar as funcionalidades mais básicas e interessantes do Frida para fazer um script rápido:
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### Chamando Frida a partir da linha de comando
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```bash
frida-ps -U
#Basic frida hooking
frida -l disableRoot.js -f owasp.mstg.uncrackable1
#Hooking before starting the app
frida -U --no-pause -l disableRoot.js -f owasp.mstg.uncrackable1
#The --no-pause and -f options allow the app to be spawned automatically,
#frozen so that the instrumentation can occur, and the automatically
#continue execution with our modified code.
```
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### Script Básico em Python
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```python
import frida, sys
jscode = open(sys.argv[0]).read()
process = frida.get_usb_device().attach('infosecadventures.fridademo')
script = process.create_script(jscode)
print('[ * ] Running Frida Demo application')
script.load()
sys.stdin.read()
```
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### Interceptando funções sem parâmetros
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Intercepte a função `a()` da classe `sg.vantagepoint.a.c`
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```javascript
Java.perform(function () {
; rootcheck1.a.overload().implementation = function() {
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rootcheck1.a.overload().implementation = function() {
send("sg.vantagepoint.a.c.a()Z Root check 1 HIT! su.exists()");
return false;
};
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});
```
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Gancho java `exit()`
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```javascript
var sysexit = Java.use("java.lang.System");
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sysexit.exit.overload("int").implementation = function(var_0) {
send("java.lang.System.exit(I)V // We avoid exiting the application :)");
};
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```
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Hook MainActivity `.onStart()` & `.onCreate()`
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```javascript
var mainactivity = Java.use("sg.vantagepoint.uncrackable1.MainActivity");
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mainactivity.onStart.overload().implementation = function() {
send("MainActivity.onStart() HIT!!!");
var ret = this.onStart.overload().call(this);
};
mainactivity.onCreate.overload("android.os.Bundle").implementation = function(var_0) {
send("MainActivity.onCreate() HIT!!!");
var ret = this.onCreate.overload("android.os.Bundle").call(this,var_0);
};
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```
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Hook android `.onCreate()`
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```javascript
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var activity = Java.use("android.app.Activity");
activity.onCreate.overload("android.os.Bundle").implementation = function(var_0) {
send("Activity HIT!!!");
var ret = this.onCreate.overload("android.os.Bundle").call(this,var_0);
};
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```
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### Interceptando funções com parâmetros e recuperando o valor
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Interceptando uma função de decodificação. Imprima a entrada, chame a função original para decodificar a entrada e, finalmente, imprima os dados em texto claro:
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```javascript
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function getString(data){
var ret = "";
for (var i=0; i < data.length ; i + + ) {
ret += data[i].toString();
}
return ret
}
var aes_decrypt = Java.use("sg.vantagepoint.a.a");
aes_decrypt.a.overload("[B","[B").implementation = function(var_0,var_1) {
send("sg.vantagepoint.a.a.a([B[B)[B doFinal(enc) // AES/ECB/PKCS7Padding");
send("Key : " + getString(var_0));
send("Encrypted : " + getString(var_1));
var ret = this.a.overload("[B","[B").call(this,var_0,var_1);
send("Decrypted : " + ret);
var flag = "";
for (var i=0; i < ret.length ; i + + ) {
flag += String.fromCharCode(ret[i]);
}
send("Decrypted flag: " + flag);
return ret; //[B
};
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```
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### Interceptando funções e chamando-as com nossa entrada
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Intercepte uma função que recebe uma string e chame-a com outra string (de [aqui ](https://11x256.github.io/Frida-hooking-android-part-2/ ))
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```javascript
var string_class = Java.use("java.lang.String"); // get a JS wrapper for java's String class
my_class.fun.overload("java.lang.String").implementation = function(x){ //hooking the new function
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var my_string = string_class.$new("My TeSt String#####"); //creating a new String by using `new` operator
console.log("Original arg: " +x );
var ret = this.fun(my_string); // calling the original function with the new String, and putting its return value in ret variable
console.log("Return value: "+ret);
return ret;
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};
```
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### Obtendo um objeto já criado de uma classe
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Se você deseja extrair algum atributo de um objeto criado, você pode usar isto.
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Neste exemplo, você verá como obter o objeto da classe my\_activity e como chamar a função .secret() que imprimirá um atributo privado do objeto:
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```javascript
Java.choose("com.example.a11x256.frida_test.my_activity" , {
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onMatch : function(instance){ //This function will be called for every instance found by frida
console.log("Found instance: "+instance);
console.log("Result of secret func: " + instance.secret());
},
onComplete:function(){}
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});
```
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## Outros tutoriais de Frida
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* [https://github.com/DERE-ad2001/Frida-Labs ](https://github.com/DERE-ad2001/Frida-Labs )
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< figure > < img src = "../../../.gitbook/assets/i3.png" alt = "" > < figcaption > < / figcaption > < / figure >
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**Dica para bug bounty**: **inscreva-se** no **Intigriti** , uma plataforma premium de bug bounty criada por hackers, para hackers! Junte-se a nós em [**https://go.intigriti.com/hacktricks** ](https://go.intigriti.com/hacktricks ) hoje mesmo e comece a ganhar recompensas de até ** $100,000**!
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2022-10-27 23:22:18 +00:00
{% embed url="https://go.intigriti.com/hacktricks" %}
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< details >
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< summary > < strong > Aprenda hacking no AWS do zero ao herói com< / strong > < a href = "https://training.hacktricks.xyz/courses/arte" > < strong > htARTE (HackTricks AWS Red Team Expert)< / strong > < / a > < strong > !< / strong > < / summary >
Outras formas de apoiar o HackTricks:
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* Se você quer ver sua **empresa anunciada no HackTricks** ou **baixar o HackTricks em PDF** , confira os [**PLANOS DE ASSINATURA** ](https://github.com/sponsors/carlospolop )!
* Adquira o [**material oficial PEASS & HackTricks** ](https://peass.creator-spring.com )
* Descubra [**A Família PEASS** ](https://opensea.io/collection/the-peass-family ), nossa coleção de [**NFTs** ](https://opensea.io/collection/the-peass-family ) exclusivos
* **Junte-se ao** 💬 [**grupo do Discord** ](https://discord.gg/hRep4RUj7f ) ou ao [**grupo do telegram** ](https://t.me/peass ) ou **siga-me** no **Twitter** 🐦 [**@carlospolopm** ](https://twitter.com/carlospolopm )**.**
* **Compartilhe suas técnicas de hacking enviando PRs para os repositórios do github** [**HackTricks** ](https://github.com/carlospolop/hacktricks ) e [**HackTricks Cloud** ](https://github.com/carlospolop/hacktricks-cloud ).
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< / details >