
Ingeniería inversa ninja en paquetes APK de Android
NinjaDroid es una herramienta simple para la ingeniería inversa de paquetes APK de Android.
Publicado en: https://snapcraft.io/ninjadroid```shell $ snap install ninjadroid --channel=beta
[](https://github.com/rovellipaolo/NinjaDroid/actions)
[](https://coveralls.io/github/rovellipaolo/NinjaDroid)
[](https://www.gnu.org/licenses/gpl-3.0)
[](https://snapcraft.io/ninjadroid)

## Resumen
NinjaDroid utiliza [AXMLParser](https://github.com/appknox/pyaxmlparser) junto con una serie de scripts de Python basados en `aapt`, `keytool`, `string` y similares para extraer una serie de información de un paquete APK dado, como:
- Lista de archivos del APK: nombre del archivo, tamaño, MD5, SHA-1, SHA-256 y SHA-512
- Información de `AndroidManifest.xml`: nombre de la app, nombre del paquete, versión, sdks, permisos, actividades, servicios, broadcast-receivers, ...
- Información del certificado digital `CERT.RSA/DSA`: número de serie, validez, huella digital, emisor y propietario
- Lista de URLs, comandos de shell y otras cadenas genéricas codificadas en los archivos `classes.dex`
Además, NinjaDroid utiliza [apktool](https://github.com/iBotPeaches/Apktool) y [dex2jar](https://github.com/pxb1988/dex2jar) para extraer y almacenar:
- Archivo de informe JSON, que contiene toda la información extraída del APK
- Archivo `AndroidManifest.xml` (gracias a `apktool`)
- Archivo de certificado digital `CERT.RSA/DSA`
- Archivos `classes.dex`
- Archivo _.jar_ traducido (gracias a `dex2jar`)
- Archivos smali desensamblados (gracias a `apktool`)
- Carpetas `assets/` y `res/` junto con su contenido (gracias a `apktool`)
## Construcción
El primer paso es clonar el repositorio de NinjaDroid, o descargar su código fuente.```shell
$ git clone https://github.com/rovellipaolo/NinjaDroid
$ cd NinjaDroid
NinjaDroid tiene varias formas de ejecutarse: de forma nativa en su entorno local, en Docker, como Flatpak (experimental) y como Snap (experimental).
Para ejecutar NinjaDroid en su máquina local, necesita instalar Python 3.5 o superior, Java 8 o superior y binutils.
Opcionalmente, si tiene el SDK de Android instalado localmente, puede usar la versión del SDK de aapt en lugar de la incluida. Para hacerlo, necesita cambiar la ubicación de aapt en ninjadroid/aapt/Aapt.py (es decir, __AAPT_EXEC_PATH = "ninjadroid/aapt/aapt").
Simplemente ejecute los siguientes comandos, que instalarán todas las dependencias de Python (asegurándose de que aapt, apktool y dex2jar tengan permisos de ejecución) y agregarán un enlace simbólico ninjadroid a /usr/local/bin/.```shell
$ make build-linux
$ make install
$ ninjadroid --help
#### MacOS
Simplemente ejecute los siguientes comandos, que instalarán todas las dependencias de Python necesarias (asegurándose de que `aapt`, `apktool` y `dex2jar` tengan permisos de ejecución) y agregarán un enlace simbólico `ninjadroid` a `/usr/local/bin/`.```shell
$ make build-macos
$ make install
$ ninjadroid --help
Para ejecutar NinjaDroid en Docker, necesitas tener Docker instalado.
Para construir la imagen Docker, ejecuta los siguientes comandos:```shell
$ make build-docker
$ docker run --name ninjadroid ninjadroid:latest ninjadroid --help
Ten en cuenta que debes vincular el directorio que contiene el paquete APK de destino a la imagen de Docker:```shell
$ mkdir apks
$ cp /path/to/your/package.apk apks/package.apk
$ docker run --name ninjadroid -it --rm -v $(pwd)/apks:/apks ninjadroid:latest ninjadroid /apks/package.apk -aj
Y lo mismo se aplica también al directorio de salida cuando se utiliza la opción -e/--extract, al que también debe otorgar permisos:```shell
$ mkdir output
$ chmod 777
$ docker run --name ninjadroid --rm -v $(pwd)/apks:/apks -v $(pwd)/output:/output ninjadroid:latest ninjadroid /apks/package.apk -ae /output
### Flatpak (experimental)
Para ejecutar NinjaDroid como Flatpak, necesitas tener instalados `Flatpak` y `flatpak-builder`.
Simplemente ejecuta los siguientes comandos, que instalarán todas las dependencias Flatpak necesarias:```shell
$ make build-flatpak
$ flatpak-builder --run flatpak/build flatpak/com.github.rovellipaolo.NinjaDroid.yaml ninjadroid --help
NOTA: La opción -e/--extract no funciona correctamente actualmente (ver: https://github.com/rovellipaolo/NinjaDroid/issues/21).
Para ejecutar NinjaDroid como un Snap, necesitas Snap y snapcraft instalados.
Simplemente ejecuta los siguientes comandos, los cuales instalarán todas las dependencias Snap necesarias:```shell
$ make build-snap
$ make install-snap
$ ninjadroid --help
**NOTA:** La opción `-e`/`--extract` no funciona correctamente cuando el snap está instalado sin usar la opción `--devmode` (consulte: https://github.com/rovellipaolo/NinjaDroid/issues/20).
## Prueba
Una vez que lo hayas configurado (consulta la sección _"Instalación"_), también puedes ejecutar las pruebas y la verificación de estilo de la siguiente manera.
### Nativo
Para ejecutarlas en tu máquina local, lanza los siguientes comandos:```shell
$ make test
$ make regression
$ make checkstyle
También puedes ejecutar las pruebas con cobertura lanzando el siguiente comando:```shell $ make test-coverage
Y/o configurar checkstyle para que se ejecute automáticamente en cada commit de git lanzando el siguiente comando:```
$ make install-githooks
Para ejecutarlos en Docker, ejecuta los siguientes comandos:```shell $ make test-docker $ make regression-docker $ make checkstyle-docker
### Flatpak
Para ejecutar las pruebas de regresión en Flatpak, lanza el siguiente comando:```shell
$ make regression-flatpak
Para ejecutar las pruebas de regresión en Snap, lanza el siguiente comando:```shell $ make regression-snap
## Uso
Los siguientes son ejemplos de ejecución de NinjaDroid contra el paquete APK de muestra.
### Mostrar resumen del APK```shell
$ ninjadroid regression/data/Example.apk
file: regression/data/Example.apk
size: 70058
md5: c9504f487c8b51412ba4980bfe3cc15d
sha1: 482a28812495b996a92191fbb3be1376193ca59b
sha256: 8773441a656b60c5e18481fd5ba9c1bf350d98789b975987cb3b2b57ee44ee51
sha512: 559eab9840ff2f8507842605e60bb0730442ddf9ee7ca4ab4f386f715c1a4707766065d6f0b977816886692bf88b400643979e2fd13e6999358a21cabdfb3071
name: Example
cert:
file: META-INF/CERT.RSA
size: 906
md5: 860e19fa47d37d9510f1245c511a8578
sha1: 59a04084c0d5ef23fd05f0f429dab6267ccb3d0b
sha256: 0efa622919417adfa6eb77770fd33d3bcd93265ac7343695e246dab1a7b6bfee
sha512: 2a5befcc0bcb14e44d7b7cb4322a76933ad3e90e5e1ffbb87ba31ee7cc0172725dcc98e9d414fb3a207bc107b2a7ca7563b5f954cac6bd41d77e4726c70a95a3
manifest:
file: AndroidManifest.xml
size: 6544
md5: 1f97f7e7ca62f39f8f81d79b1b540c37
sha1: 011316a011e5b8738c12c662cb0b0a6ffe04ca74
sha256: 7c8011a46191ecb368bf2e0104049abeb98bae8a7b1fa3328ff050aed85b1347
sha512: 8c7c1ede610f9c6613418b46a52a196ad6d5e8cc067c2f26b931738ad8087f998d9ea95e80ec4352c95fbdbb93a4f29c646973535068a3a3d584da95480ab45f
package: com.example.app
version:
code: 1
name: 1.0
sdk:
min: 10
target: 20
max: 20
permissions:
- android.permission.INTERNET
- android.permission.READ_EXTERNAL_STORAGE
- android.permission.RECEIVE_BOOT_COMPLETED
- android.permission.WRITE_EXTERNAL_STORAGE
dex:
file: classes.dex
size: 2132
md5: 7bc52ece5249ccd2d72c4360f9be2ca5
sha1: 89476799bf92798047ca026c922a5bc33983b008
sha256: 3f543c68c4c059548cec619a68f329010d797e5e4c00aa46cd34c0d19cabe056
sha512: 0725f961bc1bac47eb8dd045c2f0a0cf5475fd77089af7ddc3098e341a95d8b5624969b6fa47606a05d5a6adf9d74d0c52562ea41a376bd3d7d0aa3695ca2e22
$ ninjadroid regression/data/Example.apk --all --json
```json
{
"cert": {
"file": "META-INF/CERT.RSA",
"fingerprint": {
"md5": "",
"sha1": "5A:C0:6C:32:63:7F:5D:BE:CA:F9:38:38:4C:FA:FF:ED:20:52:43:B6",
"sha256": "E5:15:CC:BC:5E:BF:B2:9D:A6:13:03:63:CF:19:33:FA:CE:AF:DC:ED:5D:2F:F5:98:7C:CE:37:13:64:4A:CF:77",
"signature": "SHA1withRSA",
"version": "3"
},
"issuer": {
"city": "City",
"country": "XX",
"domain": "",
"email": "",
"name": "Name",
"organization": "Organization",
"state": "State",
"unit": "Unit"
},
"md5": "860e19fa47d37d9510f1245c511a8578",
"owner": {
"city": "City",
"country": "XX",
"domain": "",
"email": "",
"name": "Name",
"organization": "Organization",
"state": "State",
"unit": "Unit"
},
"serial_number": "558e7595",
"sha1": "59a04084c0d5ef23fd05f0f429dab6267ccb3d0b",
"sha256": "0efa622919417adfa6eb77770fd33d3bcd93265ac7343695e246dab1a7b6bfee",
"sha512": "2a5befcc0bcb14e44d7b7cb4322a76933ad3e90e5e1ffbb87ba31ee7cc0172725dcc98e9d414fb3a207bc107b2a7ca7563b5f954cac6bd41d77e4726c70a95a3",
"size": 906,
"validity": {
"from": "2015-06-27 10:06:13Z",
"until": "2515-02-26 10:06:13Z"
}
},
"dex": [
{
"file": "classes.dex",
"md5": "7bc52ece5249ccd2d72c4360f9be2ca5",
"sha1": "89476799bf92798047ca026c922a5bc33983b008",
"sha256": "3f543c68c4c059548cec619a68f329010d797e5e4c00aa46cd34c0d19cabe056",
"sha512": "0725f961bc1bac47eb8dd045c2f0a0cf5475fd77089af7ddc3098e341a95d8b5624969b6fa47606a05d5a6adf9d74d0c52562ea41a376bd3d7d0aa3695ca2e22",
"shell_commands": [
"set"
],
"size": 2132,
"strings": [
"!Lcom/example/app/ExampleService2;",
"!Lcom/example/app/ExampleService3;",
"#Landroid/content/BroadcastReceiver;",
")Lcom/example/app/ExampleBrodcastReceiver;",
"*Lcom/example/app/ExampleBrodcastReceiver2;",
"*Lcom/example/app/ExampleBrodcastReceiver3;",
"*Lcom/example/app/ExampleBrodcastReceiver4;",
"<init>",
"Landroid/app/Activity;",
"Landroid/app/Service;",
"Landroid/content/Context;",
"Landroid/content/Intent;",
"Landroid/os/Bundle;",
"Landroid/os/IBinder;",
"Lcom/example/app/ExampleService;",
"Lcom/example/app/HomeActivity;",
"Lcom/example/app/OtherActivity;",
"onBind",
"onCreate",
"onReceive",
"setContentView"
],
"urls": []
}
],
"file": "regression/data/Example.apk",
"manifest": {
"activities": [
{
"intent-filter": [
{
"action": [
"android.intent.action.MAIN"
],
"category": [
"android.intent.category.LAUNCHER"
]
}
],
"launchMode": "1",
"name": "com.example.app.HomeActivity"
},
{
"intent-filter": [
{
"action": [
"android.intent.action.VIEW"
],
"category": [
"android.intent.category.DEFAULT"
],
"data": [
{
"scheme": "content"
},
{
"scheme": "file"
},
{
"mimeType": "application/vnd.android.package-archive"
}
]
}
],
"launchMode": "1",
"meta-data": [
{
"name": "android.support.PARENT_ACTIVITY",
"value": "com.example.app.HomeActivity"
}
],
"name": "com.example.app.OtherActivity",
"noHistory": "true",
"parentActivityName": "com.example.app.HomeActivity"
}
],
"file": "AndroidManifest.xml",
"md5": "1f97f7e7ca62f39f8f81d79b1b540c37",
"package": "com.example.app",
"permissions": [
"android.permission.INTERNET",
"android.permission.READ_EXTERNAL_STORAGE",
"android.permission.RECEIVE_BOOT_COMPLETED",
"android.permission.WRITE_EXTERNAL_STORAGE"
],
"receivers": [
{
"name": "com.example.app.ExampleBrodcastReceiver"
},
{
"exported": false,
"intent-filter": [
{
"action": [
"android.intent.action.BOOT_COMPLETED",
"android.intent.action.MY_PACKAGE_REPLACED"
],
"priority": "1000"
}
],
"name": "com.example.app.ExampleBrodcastReceiver2"
},
{
"enabled": true,
"exported": false,
"intent-filter": [
{
"action": [
"android.intent.action.BROADCAST_PACKAGE_REMOVED",
"android.intent.action.PACKAGE_ADDED",
"android.intent.action.PACKAGE_REPLACED"
],
"data": [
{
"scheme": "package"
}
],
"priority": "800"
}
],
"name": "com.example.app.ExampleBrodcastReceiver3"
},
{
"enabled": false,
"exported": true,
"name": "com.example.app.ExampleBrodcastReceiver4"
}
],
"sdk": {
"max": "20",
"min": "10",
"target": "20"
},
"services": [
{
"name": "com.example.app.ExampleService"
},
{
"enabled": false,
"exported": true,
"isolatedProcess": true,
"name": "com.example.app.ExampleService2"
},
{
"enabled": true,
"exported": false,
"isolatedProcess": false,
"name": "com.example.app.ExampleService3"
}
],
"sha1": "011316a011e5b8738c12c662cb0b0a6ffe04ca74",
"sha256": "7c8011a46191ecb368bf2e0104049abeb98bae8a7b1fa3328ff050aed85b1347",
"sha512": "8c7c1ede610f9c6613418b46a52a196ad6d5e8cc067c2f26b931738ad8087f998d9ea95e80ec4352c95fbdbb93a4f29c646973535068a3a3d584da95480ab45f",
"size": 6544,
"version": {
"code": 1,
"name": "1.0"
}
},
"md5": "c9504f487c8b51412ba4980bfe3cc15d",
"name": "Example",
"other": [
{
"file": "res/drawable-hdpi-v4/ic_launcher.png",
"md5": "e74dbf28ebab4e1b7442a9c78067d1c2",
"sha1": "450d3d44325fdf259810a60e6afa36103e186b3d",
"sha256": "9b2639dbfdd60e0dab70e572f39660c8dfabd19b7987a7619d770824db342925",
"sha512": "44050c4db6d5275b70856050c0d58d3d9892ba09bd8cf1a8343a3c6d4f2e2af6eae1f8b687efb59b7f8122e5bea1a63e08546fee35124cc0faab40ef6274ab4f",
"size": 9193
},
{
"file": "res/drawable-hdpi-v4/ic_launcher_logo.png",
"md5": "e74dbf28ebab4e1b7442a9c78067d1c2",
"sha1": "450d3d44325fdf259810a60e6afa36103e186b3d",
"sha256": "9b2639dbfdd60e0dab70e572f39660c8dfabd19b7987a7619d770824db342925",
"sha512": "44050c4db6d5275b70856050c0d58d3d9892ba09bd8cf1a8343a3c6d4f2e2af6eae1f8b687efb59b7f8122e5bea1a63e08546fee35124cc0faab40ef6274ab4f",
"size": 9193
},
{
"file": "res/drawable-ldpi-v4/ic_launcher.png",
"md5": "58b9a42eeb99fad5321208fe02f24375",
"sha1": "09ea65885b4080e515ef7064e816c77991c0757b",
"sha256": "c4f061b2c758185371f39afcb166ba039e955d3be2619ab5469a1b873f952d0d",
"sha512": "415ed16de6fd335b24bd985d9152323d04fc02287acd3f26fa98722832cfecf89cf2c77ad8ae3f5588acc5cac401129ac3b3d714abbf8dcc492ab2fd98f106e5",
"size": 2658
},
{
"file": "res/drawable-ldpi-v4/ic_launcher_logo.png",
"md5": "58b9a42eeb99fad5321208fe02f24375",
"sha1": "09ea65885b4080e515ef7064e816c77991c0757b",
"sha256": "c4f061b2c758185371f39afcb166ba039e955d3be2619ab5469a1b873f952d0d",
"sha512": "415ed16de6fd335b24bd985d9152323d04fc02287acd3f26fa98722832cfecf89cf2c77ad8ae3f5588acc5cac401129ac3b3d714abbf8dcc492ab2fd98f106e5",
"size": 2658
},
{
"file": "res/drawable-mdpi-v4/ic_launcher.png",
"md5": "acefc1f320111a8d71bcdb8b4aa0656c",
"sha1": "23730fd0d5e720d1f719be1afc8c48fa7305da6c",
"sha256": "05346d62d4096537906928af523ef9d5997663707a1d48e08f20992584e1424d",
"sha512": "59896fc52679e86898dc09b56fb53270d4297c53adee26f864657c5ef4aff9e5f5922dfa9370c3d1748068aa7b1270e0fa8a1323ce3b69c7548a50ca221befc1",
"size": 5057
},
{
"file": "res/drawable-mdpi-v4/ic_launcher_logo.png",
"md5": "acefc1f320111a8d71bcdb8b4aa0656c",
"sha1": "23730fd0d5e720d1f719be1afc8c48fa7305da6c",
"sha256": "05346d62d4096537906928af523ef9d5997663707a1d48e08f20992584e1424d",
"sha512": "59896fc52679e86898dc09b56fb53270d4297c53adee26f864657c5ef4aff9e5f5922dfa9370c3d1748068aa7b1270e0fa8a1323ce3b69c7548a50ca221befc1",
"size": 5057
},
{
"file": "res/drawable-xhdpi-v4/ic_launcher.png",
"md5": "94f5591633218c0b469b65947fd8943b",
"sha1": "502cd84fa444f26d7ecfdf4a355064867977f236",
"sha256": "29d15992424b40757135f47fc8ddd15e30c7774646b37755608f7cfec1df7d8a",
"sha512": "d5b48e065a614c5a2400b6565dc36777d9923d8d5154487113dd1f46b05d36d1db3f28fb72f61a68fcbd225c93495541579574e6611f650fe2857767412c3b1f",
"size": 14068
},
{
"file": "res/drawable-xhdpi-v4/ic_launcher_logo.png",
"md5": "94f5591633218c0b469b65947fd8943b",
"sha1": "502cd84fa444f26d7ecfdf4a355064867977f236",
"sha256": "29d15992424b40757135f47fc8ddd15e30c7774646b37755608f7cfec1df7d8a",
"sha512": "d5b48e065a614c5a2400b6565dc36777d9923d8d5154487113dd1f46b05d36d1db3f28fb72f61a68fcbd225c93495541579574e6611f650fe2857767412c3b1f",
"size": 14068
},
{
"file": "res/layout/main.xml",
"md5": "8cdec0105448937475e45e22c80fd611",
"sha1": "51ebf14ed21238f7d147a6744cae18c0f55fcbe6",
"sha256": "e74db1ac37395ca9fd25b93261d3ab76ed7dfc9b355ea63d856afc7453313738",
"sha512": "2d2147365b8b00f2db7498b7f0ed8a360fc15bd43dfd3704b4b1cb912619d9ff1bc35837eb1e601ea6d1aa3a8c0d555f2105d6ed37de919fa128568527765d63",
"size": 552
},
{
"file": "resources.arsc",
"md5": "2886f2825eef3b5c4478852935c68640",
"sha1": "1eff126288b4bea6fa78eb79832d6a7fa098695e",
"sha256": "ac46f54fa12dc20e94619465482186047505fb9f27508861220063c93f0c6c4e",
"sha512": "da8c41d0c27839ed89cb06a2f89f6993bd88f5179e97f3291f0e17348868b3e9c106e96f482ecd86f11808170937773e7599ccd338900908359e870ea5446169",
"size": 1640
},
{
"file": "META-INF/MANIFEST.MF",
"md5": "6098a6409625f1c0d97cd33c13ad300c",
"sha1": "ccfe31190feb259a4a56599ad1403a956f6944b5",
"sha256": "8a18f285481346919f4df55f576ee504bf5abecb068a2d642fdef17f3b5cd631",
"sha512": "17a68bf605aff149aa31e1b0b81af3d3f74f939e1cb7a10f3eddf84775f901b09ba9722efad1265b0057cdfcd12c6fac701067993081620b00bbfcc4efff3599",
"size": 1061
},
{
"file": "META-INF/CERT.SF",
"md5": "fb02917b68510e413a06e52873802bcd",
"sha1": "dfb7bbb487010b980152610fe7d669c1b4f626be",
"sha256": "e2fa373f8b065ef7c78387ab9242e98dd19bdeb2b768295506295f7beb0bfe3f",
"sha512": "3aa74603588ca5c563b6586d1216dc6cea3b8d2a1a47eb189197e8f20cd7508d3e652c7ff849261e95cff52451476b2993caadf051fdf66cc01f5e6e16b180fc",
"size": 1114
}
],
"sha1": "482a28812495b996a92191fbb3be1376193ca59b",
"sha256": "8773441a656b60c5e18481fd5ba9c1bf350d98789b975987cb3b2b57ee44ee51",
"sha512": "559eab9840ff2f8507842605e60bb0730442ddf9ee7ca4ab4f386f715c1a4707766065d6f0b977816886692bf88b400643979e2fd13e6999358a21cabdfb3071",
"size": 70058
}
$ ninjadroid regression/data/Example.apk --all --extract output/
```shell
>> NinjaDroid: [INFO] Executing apktool...
>> NinjaDroid: [INFO] Creating output/smali/...
>> NinjaDroid: [INFO] Creating output/AndroidManifest.xml...
>> NinjaDroid: [INFO] Creating output/res/...
>> NinjaDroid: [INFO] Creating output/assets/...
>> NinjaDroid: [INFO] Executing dex2jar...
>> NinjaDroid: [INFO] Creating output/Example.jar...
dex2jar regression/data/Example.apk -> output/Example.jar
>> NinjaDroid: [INFO] Extracting certificate file...
>> NinjaDroid: [INFO] Creating output/META-INF/CERT.RSA...
>> NinjaDroid: [INFO] Extracting DEX files...
>> NinjaDroid: [INFO] Creating output/classes.dex...
>> NinjaDroid: [INFO] Generating JSON report file...
>> NinjaDroid: [INFO] Creating output/report-Example.json...
NOTA: sin especificar un directorio de salida, se creará uno con el nombre del paquete APK dentro del directorio de trabajo actual.
NinjaDroid está bajo la licencia GNU General Public License v3.0 (http://www.gnu.org/licenses/gpl-3.0.html).