Mwongozo wa Frida

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Ufungaji

Sakinisha frida tools:

pip install frida-tools
pip install frida

Pakua na sakinisha kwenye Android frida server (Download the latest release).
Mstari mmoja wa kuanzisha upya adb katika mode ya root, kuungana nayo, kupakia frida-server, kutoa ruhusa za exec na kuiendesha kwa background:

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 &"

Angalia ikiwa inafanya kazi:

frida-ps -U #List packages and processes
frida-ps -U | grep -i <part_of_the_package_name> #Get all the package name

frida-ui (Frida controller inayotegemea kivinjari)

frida-ui inatoa kiolesura cha wavuti kwenye http://127.0.0.1:8000 ili kuorodhesha vifaa/apps na ku-attach au ku-spawn targets kwa scripts (hakuna CLI inahitajika).

• Sakinisha (pin frida to the device server version):

uv tool install frida-ui --with frida==16.7.19
# pipx install frida-ui
# pip install frida-ui

• Endesha:

frida-ui
frida-ui --host 127.0.0.1 --port 8000 --reload

• Vipengele: inagundua vifaa vya USB/vilivyo karibu, ongeza seva za mbali (192.168.1.x:27042), na inasaidia Attach, Spawn, na Spawn & Run (kuweka hook kabla ya mapema ya onCreate() logic).
• Scripting: mhariri, buruta na achia .js, import CodeShare, pakua scripts na session logs.
• Remote servers: ./frida-server -l 0.0.0.0:27042 -D huifunua kwenye mtandao ili frida-ui iweze kuungana bila ADB.

Frida server vs. Gadget (root vs. no-root)

Njia mbili za kawaida za kuweka instrumentation kwenye programu za Android kwa kutumia Frida:

• Frida server (rooted devices): Sukuma na uendeshe daemon asilia inayokuruhusu kufanya Attach kwa mchakato wowote.
• Frida Gadget (no root): Panga Frida kama shared library ndani ya APK na i-auto-load ndani ya mchakato lengwa.

Frida server (rooted)

# Download the matching frida-server binary for your device's arch
# https://github.com/frida/frida/releases
adb root
adb push frida-server-<ver>-android-<arch> /data/local/tmp/frida-server
adb shell chmod 755 /data/local/tmp/frida-server
adb shell /data/local/tmp/frida-server &    # run at boot via init/magisk if desired

# From host, list processes and attach
frida-ps -Uai
frida -U -n com.example.app

Frida Gadget (no-root)

1. Fungua APK, ongeza gadget .so na config:

• Weka libfrida-gadget.so ndani ya lib/<abi>/ (kwa mfano lib/arm64-v8a/)
• Unda assets/frida-gadget.config na mipangilio yako ya kupakia script

Mfano wa frida-gadget.config

{
"interaction": { "type": "script", "path": "/sdcard/ssl-bypass.js" },
"runtime": { "logFile": "/sdcard/frida-gadget.log" }
}

2. Taja/pakia gadget ili ianzishwe mapema:

• Rahisi zaidi: Ongeza stub ndogo ya Java kwa System.loadLibrary(“frida-gadget”) katika Application.onCreate(), au tumia upakiaji wa maktaba ya native uliopo tayari.

3. Pakia upya na sainisha APK, kisha sakinisha:

apktool d app.apk -o app_m
# ... add gadget .so and config ...
apktool b app_m -o app_gadget.apk
uber-apk-signer -a app_gadget.apk -o out_signed
adb install -r out_signed/app_gadget-aligned-debugSigned.apk

4. Unganisha kutoka host hadi mchakato wa gadget:

frida-ps -Uai
frida -U -n com.example.app

Vidokezo

• Gadget hutambuliwa na baadhi ya kinga; hifadhi majina/njia kwa siri na zipakishe kwa kuchelewa/ikiwa kwa masharti inapohitajika.
• Kwa apps zilizoimarishwa, toa kipaumbele kwa upimaji kwenye device yenye root pamoja na server + late attach, au changanya na kuficha kwa Magisk/Zygisk.

JDWP-based Frida injection without root/repackaging (frida-jdwp-loader)

Ikiwa APK ni debuggable (android:debuggable=“true”), unaweza ku-attach kupitia JDWP na ku-inject native library kwenye Java breakpoint. Hakuna root na hakuna APK repackaging.

• Repo: https://github.com/frankheat/frida-jdwp-loader
• Mahitaji: ADB, Python 3, USB/Wireless debugging. App lazima iwe debuggable (emulator with ro.debuggable=1, rooted device with resetprop, or rebuild manifest).

Anza haraka

git clone https://github.com/frankheat/frida-jdwp-loader.git
cd frida-jdwp-loader
# Inject frida-gadget.so into a debuggable target
python frida-jdwp-loader.py frida -n com.example.myapplication
# Keep the breakpoint thread suspended for early hooks
python frida-jdwp-loader.py frida -n com.example.myapplication -s
# Networkless: run a local agent script via Gadget "script" mode
python frida-jdwp-loader.py frida -n com.example.myapplication -i script -l script.js

Vidokezo

• Modi: spawn (break at Application.onCreate) au attach (break at Activity.onStart). Tumia -b kuweka Java method maalum, -g kuchagua Gadget version/path, -p kuchagua JDWP port.
• Modi ya kusikiliza: forward Gadget (default 127.0.0.1:27042) ikiwa inahitajika: adb forward tcp:27042 tcp:27042; kisha frida-ps -H 127.0.0.1:27042.
• Hii inatumia JDWP debugging. Hatari ni kusafirisha debuggable builds au kufichua JDWP.

Agent kamili + kuingizwa kwa Gadget (Frida 17+; otomatiki na Objection)

Frida 17 iliondoa Java/ObjC bridges zilizojengwa ndani za GumJS. Ikiwa agent yako hooks Java, lazima ujumuishe Java bridge ndani ya bundle yako.

1. Tengeneza Frida agent (TypeScript) na ujumuishe Java bridge

# Scaffolding
frida-create -t agent -o mod
cd mod && npm install
# Install the Java bridge for Frida 17+
npm install frida-java-bridge
# Dev loop (optional live-reload via REPL)
npm run watch

Hook ya Java ndogo (inalazimisha matokeo ya kutupa dadi kuwa 1):

import Java from "frida-java-bridge";

Java.perform(function () {
var dicer = Java.use("org.secuso.privacyfriendlydicer.dicer.Dicer");
dicer.rollDice.implementation = function (numDice: number, numFaces: number) {
return Array(numDice).fill(1);
};
});

Tengeneza bundle moja kwa ajili ya kuingizwa:

npm run build    # produces _agent.js via frida-compile

Jaribio la USB la haraka (hiari):

frida -U -f org.secuso.privacyfriendlydicer -l _agent.js

2. Sanidi Gadget ili ipakie script yako moja kwa moja Objection’s patcher inatarajia Gadget config; wakati unapotumia script mode, bainisha on-disk path ndani ya APK lib dir:

{
"interaction": {
"type": "script",
"path": "libfrida-gadget.script.so"
}
}

3. Automatisha APK patching kwa Objection

# Embed Gadget, config, and your compiled agent into the APK; rebuild and sign
objection patchapk -s org.secuso.privacyfriendlydicer.apk \
-c gadget-config.json \
-l mod/_agent.js \
--use-aapt2

Kile ambacho patchapk hufanya (kwa kiwango cha juu):

• Inatambua ABI ya kifaa (e.g., arm64-v8a) na hupakua Gadget inayofaa
• Kwa hiari inaongeza android.permission.INTERNET inapohitajika
• Inaingiza static class initializer inayoita System.loadLibrary(“frida-gadget”) katika launch activity
• Inaweka yafuatayo chini ya lib/<abi>/:
• libfrida-gadget.so
• libfrida-gadget.config.so (config iliyoseriarishwa)
• libfrida-gadget.script.so (_agent.js yako)

Mfano wa smali iliyochomwa (static initializer):

.method static constructor <clinit>()V
.locals 1
const-string v0, "frida-gadget"
invoke-static {v0}, Ljava/lang/System;->loadLibrary(Ljava/lang/String;)V
return-void
.end method

4. Thibitisha repack

apktool d org.secuso.privacyfriendlydicer.apk
apktool d org.secuso.privacyfriendlydicer.objection.apk
# Inspect differences
diff -r org.secuso.privacyfriendlydicer org.secuso.privacyfriendlydicer.objection

Mabadiliko yanayotarajiwa:

• AndroidManifest.xml inaweza kujumuisha <uses-permission android:name="android.permission.INTERNET"/>
• Maktaba za native mpya chini ya lib/<abi>/ kama ilivyo hapo juu
• Smali ya Launchable activity ina static <clinit> inayoitisha System.loadLibrary(“frida-gadget”)

5. Split APKs

• Patch the base APK (ile inayotangaza MAIN/LAUNCHER activity)
• Saini tena splits zilizobaki kwa ufunguo ule ule:

objection signapk split1.apk split2.apk ...

• Sakinisha splits pamoja:

adb install-multiple split1.apk split2.apk ...

• Kwa usambazaji, unaweza kuunganisha splits kuwa APK moja kwa APKEditor, kisha align/sign

Kuondoa FLAG_SECURE wakati wa dynamic analysis

Programu ambazo zinapiga getWindow().setFlags(LayoutParams.FLAG_SECURE, LayoutParams.FLAG_SECURE) huzuia screenshots, remote displays na hata Android’s recent-task snapshots. Wakati Freedom Chat ilitetea flag hii, njia pekee ya kuandika leaks ilikuwa kuingilia window wakati wa runtime. Mtindo unaotegemewa ni:

• Hook kila overload ya Window inayoweza ku-re-apply flag (setFlags, addFlags, setAttributes) na uweke maski ili kuondoa bit 0x00002000 (WindowManager.LayoutParams.FLAG_SECURE).
• Baada ya kila activity resume, panga mwito kwenye UI-thread wa clearFlags(FLAG_SECURE) ili Dialogs/Fragments zinazoundwa baadaye zirithi hali isiyo na FLAG_SECURE.
• Apps zilizojengwa kwa React Native / Flutter mara nyingi huunda nested windows; hook android.app.Dialog/android.view.View helpers au pitia getWindow().peekDecorView() ikiwa bado unaona black frames.

</details>

Endesha script kwa `frida -U -f <package> -l disable-flag-secure.js --no-pause`, ingiliana na UI, na screenshots/recordings zitatumika tena. Kwa kuwa kila kitu kinatokea kwenye UI thread hakuna flicker, na bado unaweza kuunganisha hook na HTTP Toolkit/Burp ili kunasa traffic ambayo ilifunua `/channel` PIN leak.


## Mafunzo

### [Mafunzo 1](frida-tutorial-1.md)

**Chanzo**: [https://medium.com/infosec-adventures/introduction-to-frida-5a3f51595ca1](https://medium.com/infosec-adventures/introduction-to-frida-5a3f51595ca1)\
**APK**: [https://github.com/t0thkr1s/frida-demo/releases](https://github.com/t0thkr1s/frida-demo/releases)\
**Msimbo wa Chanzo**: [https://github.com/t0thkr1s/frida-demo](https://github.com/t0thkr1s/frida-demo)

**Fuata [kiungo cha kusoma](frida-tutorial-1.md).**

### [Mafunzo 2](frida-tutorial-2.md)

**Chanzo**: [https://11x256.github.io/Frida-hooking-android-part-2/](https://11x256.github.io/Frida-hooking-android-part-2/) (Sehemu 2, 3 & 4)\
**APKs na Msimbo wa Chanzo**: [https://github.com/11x256/frida-android-examples](https://github.com/11x256/frida-android-examples)

**Fuata [kiungo kusoma.](frida-tutorial-2.md)**

### [Mafunzo 3](owaspuncrackable-1.md)

**Chanzo**: [https://joshspicer.com/android-frida-1](https://joshspicer.com/android-frida-1)\
**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)

**Fuata [kiungo cha kusoma](owaspuncrackable-1.md).**

**Unaweza kupata script za Frida zaidi hapa:** [**https://codeshare.frida.re/**](https://codeshare.frida.re)

## Mifano ya Haraka

### Kuitisha Frida kutoka mstari wa amri
```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.

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()

Java.perform(function () {
rootcheck1.a.overload().implementation = function () {
return false;
};
});

var sysexit = Java.use("java.lang.System")
sysexit.exit.overload("int").implementation = function (var_0) {
send("java.lang.System.exit(I)V  // We avoid exiting the application  :)")
}

var mainactivity = Java.use("sg.vantagepoint.uncrackable1.MainActivity")
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)
}

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)
}

</details>

### Hooking functions na kuwaita kwa kutumia input yetu

Hook a function inayopokea string, kisha iite kwa kutumia string nyingine (from [here](https://11x256.github.io/Frida-hooking-android-part-2/))
```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
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
}

Java.choose("com.example.a11x256.frida_test.my_activity", {
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 () {},
})