frida snippetsダウンロード - frida snippetsソースコードのダウンロード

& 出力例も

Binder transactions
Get system property
Reveal manually registered native symbols
Enumerate loaded classes
Class description
Turn WiFi off
Set proxy
Get IMEI
Hook io InputStream
Android make Toast
Await for specific module to load
Webview URLS
Print all runtime strings & stacktrace
Print shared preferences updates
String comparison
Hook JNI by address
Hook constructor
Hook Java reflection
Trace class
Hooking Unity3d
Get Android ID
Change location
Bypass FLAG_SECURE
Shared Preferences update
Hook all method overloads
Register broadcast receiver
Increase step count
list classes implements interface with class loaders
ファイルシステムアクセスフック$ frida --codeshare FrenchYeti/android-file-system-access-hook -f com.example.app --no-pause
Javaフックを削除/無効にする方法は? implementationプロパティにnullを割り当てます。

iOS

OS Log
iOS alert box
File access
Observe class
Find application UUID
Extract cookies
Describe class members
Class hierarchy
Hook refelaction
Device properties
Take screenshot
Log SSH commands

窓

崇高なスニペット

 {
    "scope": "source.js",
    "completions": [
	{"trigger": "fridainterceptor", "contents": "Interceptor.attach(n    ptr,n    {n        onEnter:function(args) {nn        },n        onLeave: function(retval) {nn        }n    }n)"},
	{"trigger": "fridaperform", "contents": "function main(){n    console.log('main()');n}nnconsole.log('script loaded');nJava.perform(main);"},
	{"trigger": "fridause", "contents": "var kls = Java.use('kls');"},
	{"trigger": "fridahex", "contents": "hexdump(n    ptr,n    {n         offset: 0,n         length: ptr_sizen     }n);" },
	{"trigger": "fridabacktrace", "contents": "console.log('called from:\n' +n        Thread.backtrace(this.context, Backtracer.ACCURATE)n        .map(DebugSymbol.fromAddress).join('\n') + '\n'n);"},
	{"trigger": "fridamods", "contents": "var mods = Process.enumerateModules().filter(function(mod){n    return mod.name.includes("<name>");n});"},
	{"trigger": "fridaexport", "contents": "Module.findExportByName(null, "<export_name>");"},
	{"trigger": "fridabase", "contents": "Module.findBaseAddress(name);"},
	{"trigger": "fridaoverload", "contents": "kls.method_name.overload().implementation=function(){}"}
    ]
}

Vim スニペット

略語をリストするには:ab

keyと<Space>を入力して展開します

~/.vimrcに追加

 ab fridaintercept Interceptor.attach(ptr, {<CR><Tab>onEnter: function(args) {<CR><CR>},<CR>onLeave: function(retval) {<CR><CR>}<CR><BS>})
ab fridabacktrace console.warn(Thread.backtrace(this.context, Backtracer.ACCURATE).map(DebugSymbol.fromAddress).join('n'));<ESC>F(3;
ab fridadescribe console.log(Object.getOwnPropertyNames(Java.use('$').__proto__).join('nt'))<Esc>F$

ジェブ

キーボードショートカットを使用した Java メソッドフックジェネレーター

curl -o ~/$JEB$/scripts/FridaCodeGenerator.py https://raw.githubusercontent.com/iddoeldor/frida-snippets/master/scripts/FridaCodeGenerator.py
Java メソッドのシグネチャにカーソルを置きます
Ctrl+Shift+Zを押します
コードはシステムのクリップボードにコピーされます ( xclipを使用)

SSLキーを取得する

 var keylog_callback = new NativeCallback ( ( ssl , line ) => {
  send ( Memory . readCString ( line ) ) ;
} , 'void' , [ 'pointer' , 'pointer' ] ) ;

if ( ObjC . available ) {
  var CALLBACK_OFFSET = 0x2A8
  if ( Memory . readDouble ( Module . findExportByName ( 'CoreFoundation' , 'kCFCoreFoundationVersionNumber' ) ) >= 1751.108 ) {
    CALLBACK_OFFSET = 0x2B8
  }
  Interceptor . attach ( Module . findExportByName ( 'libboringssl.dylib' , 'SSL_CTX_set_info_callback' ) , {
    onEnter ( args ) {
      ptr ( args [ 0 ] ) . add ( CALLBACK_OFFSET ) . writePointer ( keylog_callback )
    }
  } )
} else if ( Java . available ) {
  var set_keylog_callback = new NativeFunction ( Module . findExportByName ( 'libssl.so' , 'SSL_CTX_set_keylog_callback' ) , 'void' , [ 'pointer' , 'pointer' ] ) ;
  Interceptor . attach ( Module . findExportByName ( 'libssl.so' , 'SSL_CTX_new' ) , {
    onLeave ( retval ) {
      set_keylog_callback ( retval , keylog_callback )
    }
  } )
}

⬆ トップに戻る

CPPモジュールをロードする

# include < iostream >
# include < string >

extern " C " {
  void * create_stdstr ( char *data, int size) {
    std::string* s = new std::string ();
    (*s). assign (data, size);		  
    return s;
  }
}

$ ./android-ndk/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android21-clang++ a.cpp -o a -shared -static-libstdc++ && adb push a /data/local/tmp/a

 [ device ] - > 
function readStdString ( str ) {
  if ( ( str . readU8 ( ) & 1 ) === 1 ) { // size LSB (=1) indicates if it's a long string
    return str . add ( 2 * Process . pointerSize ) . readPointer ( ) . readUtf8String ( ) ;    
  }
  return str . add ( 1 ) . readUtf8String ( ) ;  
}
[ device ] - > Module . load ( '/data/local/tmp/a' ) ;
[ device ] - > var fp_create_stdstr = Module . findExportByName ( 'a' , 'create_stdstr' ) ;
[ device ] - > var createStdString = new NativeFunction ( fp_create_stdstr , 'pointer' , [ 'pointer' , 'int' ] ) ;
[ device ] - > var stdstr1 = createStdString ( Memory . allocUtf8String ( "abcd" ) , 3 ) ;
"0x07691234567"
[ device ] - > readStdString ( stdstr1 ) ;
"abc"

Cモジュールをロードする

https://frida.re/docs/javascript-api/#cmodule
https://frida.re/news/2019/09/18/frida-12-7-release/

$ ./aarch64-linux-android21-clang /tmp/b.c -o /tmp/a -shared ../sysroot/usr/lib/aarch64-linux-android/21/liblog.so && adb push /tmp/a /data/local/tmp/a

 #include <stdio.h>
#include <stdlib.h>
#include <android/log.h>    

#define TAG "TEST1"
#define LOGI (...) __android_log_print(ANDROID_LOG_INFO, TAG, __VA_ARGS__)
#define LOGE (...) __android_log_print(ANDROID_LOG_ERROR, TAG, __VA_ARGS__)

void test ( void ) {
  FILE * fp = popen ( "ls -l /sdcard 2>&1" , "r" );
  if ( fp == NULL )
    LOGE ( "executing cmd failed" );
  char b [ 256 ];
  while ( fgets ( b , sizeof ( b ), fp ) != NULL ) {
    LOGI ( "%s" , b );
  }
  pclose ( fp );
}

$ frida -Uf com.app --no-pause --enable-jit -e " Module.load('/data/local/tmp/a') "
[ ] - > new NativeFunction(Module.findExportByName( ' a ' , ' test ' ), ' void ' , [])()

⬆ トップに戻る

ワンタイムウォッチポイント

funcPtr傍受し、 mprotectを使用してアクセス許可を削除することでx2に読み取り/書き込みを行ったユーザーをログに記録します。

 Process . setExceptionHandler ( function ( exp ) {
  console . warn ( JSON . stringify ( Object . assign ( exp , { _lr : DebugSymbol . fromAddress ( exp . context . lr ) , _pc : DebugSymbol . fromAddress ( exp . context . pc ) } ) , null , 2 ) ) ;
  Memory . protect ( exp . memory . address , Process . pointerSize , 'rw-' ) ;
  // can also use `new NativeFunction(Module.findExportByName(null, 'mprotect'), 'int', ['pointer', 'uint', 'int'])(parseInt(this.context.x2), 2, 0)`
  return true ; // goto PC 
} ) ;

Interceptor . attach ( funcPtr , {
  onEnter : function ( args ) {
    console . log ( 'onEnter' , JSON . stringify ( {
      x2 : this . context . x2 ,
      mprotect_ret : Memory . protect ( this . context . x2 , 2 , '---' ) ,
      errno : this . errno
    } , null , 2 ) ) ;
  } ,
  onLeave : function ( retval ) {
    console . log ( 'onLeave' ) ;
  }
} ) ;

出力例

 [iOS Device::com.app]-> onEnter {
  "x2": "0x1c145c6e0",
  "mprotect_ret": true,
  "errno": 2
}
{
  "type": "access-violation",
  "address": "0x1853b0198",
  "memory": {
    "operation": "read",
    "address": "0x1c145c6e0"
  },
  "context": {
    "lr": "0x100453358",
    "fp": "0x16fb2e860",
    "x28": "0x0",
    "x27": "0x0",
    "x26": "0x104312600",
    "x25": "0x0",
    "x24": "0x0",
    "x23": "0x0",
    "x22": "0x0",
    "x21": "0xb000000422bbda03",
    "x20": "0x1c4a22560",
    "x19": "0xb000000422bbda03",
    "x18": "0x0",
    "x17": "0x100d25290",
    "x16": "0x1853b0190",
    "x15": "0x0",
    "x14": "0x5",
    "x13": "0xe5a1c4119597",
    "x12": "0x10e80ca30",
    "x11": "0x180000003f",
    "x10": "0x10e80ca00",
    "x9": "0x1020ad7c3",
    "x8": "0x0",
    "x7": "0x0",
    "x6": "0x0",
    "x5": "0x0",
    "x4": "0xb000000422bbda03",
    "x3": "0x1c4a22560",
    "x2": "0x1c145c6e0",
    "x1": "0x1020ad7c3",
    "x0": "0x1c145c6e0",
    "sp": "0x16fb2e790",
    "pc": "0x1853b0198"
  },
  "nativeContext": "0x16fc42b24"
}
onLeave

⬆ トップに戻る

ソケットアクティビティ

 Process
  . getModuleByName ( { linux : 'libc.so' , darwin : 'libSystem.B.dylib' , windows : 'ws2_32.dll' } [ Process . platform ] )
  . enumerateExports ( ) . filter ( ex => ex . type === 'function' && [ 'connect' , 'recv' , 'send' , 'read' , 'write' ] . some ( prefix => ex . name . indexOf ( prefix ) === 0 ) )
  . forEach ( ex => {
    Interceptor . attach ( ex . address , {
      onEnter : function ( args ) {
        var fd = args [ 0 ] . toInt32 ( ) ;
        var socktype = Socket . type ( fd ) ;
        if ( socktype !== 'tcp' && socktype !== 'tcp6' )
          return ;
        var address = Socket . peerAddress ( fd ) ;
        if ( address === null )
          return ;
        console . log ( fd , ex . name , address . ip + ':' + address . port ) ;
      }
    } )
  } )

出力例

Androidの例

 # wrap the script above inside Java.perform
$ frida -Uf com.example.app -l script.js --no-pause
[Android Model-X::com.example.app]- > 117 write 5.0.2.1:5242
117 read 5.0.2.1:5242
135 write 5.0.2.1:4244
135 read 5.0.2.1:4244
135 read 5.0.2.1:4244

⬆ トップに戻る

インターセプトオープン

特定のファイルが開かれた場合にlibc#openインターセプトし、バックトレースをログに記録する例。

 Interceptor . attach ( Module . findExportByName ( "/system/lib/libc.so" , "open" ) , {
  onEnter : function ( args ) {
    this . flag = false ;
    var filename = Memory . readCString ( ptr ( args [ 0 ] ) ) ;
    console . log ( 'filename =' , filename )
    if ( filename . endsWith ( ".xml" ) ) {
      this . flag = true ;
      var backtrace = Thread . backtrace ( this . context , Backtracer . ACCURATE ) . map ( DebugSymbol . fromAddress ) . join ( "nt" ) ;
      console . log ( "file name [ " + Memory . readCString ( ptr ( args [ 0 ] ) ) + " ]nBacktrace:" + backtrace ) ;
    }
  } ,
  onLeave : function ( retval ) {
    if ( this . flag ) // passed from onEnter
      console . warn ( "nretval: " + retval ) ;
  }
} ) ;

 var fds = { } ; // for f in /proc/`pidof $APP`/fd/*; do echo $f': 'readlink $f; done
Interceptor . attach ( Module . findExportByName ( null , 'open' ) , {
  onEnter : function ( args ) {
    var fname = args [ 0 ] . readCString ( ) ;
    if ( fname . endsWith ( '.jar' ) ) {
      this . flag = true ;
      this . fname = fname ;
    }
  } ,
  onLeave : function ( retval ) {
    if ( this . flag ) {
      fds [ retval ] = this . fname ;
    }
  }
} ) ;
[ 'read' , 'pread' , 'readv' ] . forEach ( fnc => {
  Interceptor . attach ( Module . findExportByName ( null , fnc ) , {
    onEnter : function ( args ) {
      var fd = args [ 0 ] ;
      if ( fd in fds )
        console . log ( ` ${ fnc } : ${ fds [ fd ] }
	t ${ Thread . backtrace ( this . context , Backtracer . ACCURATE ) . map ( DebugSymbol . fromAddress ) . join ( 'nt' ) } ` ) ;
    }
  } ) ;
} ) ;

出力例

「com.android.chrome」を傍受する

⬆ トップに戻る

シェルコマンドを実行する

 import frida
from frida_tools . application import Reactor
import threading
import click


class Shell ( object ):
    def __init__ ( self , argv , env ):
        self . _stop_requested = threading . Event ()
        self . _reactor = Reactor ( run_until_return = lambda reactor : self . _stop_requested . wait ())

        self . _device = frida . get_usb_device ()
        self . _sessions = set ()

        self . _device . on ( "child-added" , lambda child : self . _reactor . schedule ( lambda : self . _on_child_added ( child )))
        self . _device . on ( "child-removed" , lambda child : self . _reactor . schedule ( lambda : self . _on_child_removed ( child )))
        self . _device . on ( "output" , lambda pid , fd , data : self . _reactor . schedule ( lambda : self . _on_output ( pid , fd , data )))

        self . argv = argv
        self . env = env
        self . output = []  # stdout will pushed into array

    def exec ( self ):
        self . _reactor . schedule ( lambda : self . _start ())
        self . _reactor . run ()

    def _start ( self ):
        click . secho ( "✔ spawn(argv={})" . format ( self . argv ), fg = 'green' , dim = True )
        pid = self . _device . spawn ( self . argv , env = self . env , stdio = 'pipe' )
        self . _instrument ( pid )

    def _stop_if_idle ( self ):
        if len ( self . _sessions ) == 0 :
            self . _stop_requested . set ()

    def _instrument ( self , pid ):
        click . secho ( "✔ attach(pid={})" . format ( pid ), fg = 'green' , dim = True )
        session = self . _device . attach ( pid )
        session . on ( "detached" , lambda reason : self . _reactor . schedule ( lambda : self . _on_detached ( pid , session , reason )))
        click . secho ( "✔ enable_child_gating()" , fg = 'green' , dim = True )
        session . enable_child_gating ()
        # print("✔ resume(pid={})".format(pid))
        self . _device . resume ( pid )
        self . _sessions . add ( session )

    def _on_child_added ( self , child ):
        click . secho ( "⚡ child_added: {}" . format ( child ), fg = 'green' , dim = True )
        self . _instrument ( child . pid )

    @ staticmethod
    def _on_child_removed ( child ):
        click . secho ( "⚡ child_removed: {}" . format ( child ), fg = 'green' , dim = True )

    def _on_output ( self , pid , fd , data ):
        # print("⚡ output: pid={}, fd={}, data={}".format(pid, fd, repr(data)))
        # fd=0 (input) fd=1(stdout) fd=2(stderr)
        if fd != 2 :
            self . output . append ( data )

    def _on_detached ( self , pid , session , reason ):
        click . secho ( "⚡ detached: pid={}, reason='{}'" . format ( pid , reason ), fg = 'green' , dim = True )
        self . _sessions . remove ( session )
        self . _reactor . schedule ( self . _stop_if_idle , delay = 0.5 )

    @ staticmethod
    def _on_message ( pid , message ):
        click . secho ( "⚡ message: pid={}, payload={}" . format ( pid , message ), fg = 'green' , dim = True )

使用例

ディレクトリの内容をリストします。

 def ls ( folder ):
    cmd = Shell ([ '/bin/sh' , '-c' , 'ls -la ' + folder ], None )
    cmd . exec ()
    for chunk in cmd . output :
        print ( chunk . strip (). decode ())

iOSからバイナリをプルする

 cmd = Shell ([ '/bin/sh' , '-c' , 'cat /System/Library/PrivateFrameworks/Example.framework/example' ], None )
cmd . exec ()
with open ( '/tmp/example' , 'wb+' ) as f :
    f . writelines ( cmd . output )
 # $ file /tmp/example
 # /tmp/example: Mach-O 64-bit 64-bit architecture=12 executable

⬆ トップに戻る

モジュールの一覧表示

 Process . enumerateModulesSync ( )
    . filter ( function ( m ) { return m [ 'path' ] . toLowerCase ( ) . indexOf ( 'app' ) != - 1 ; } )
    . forEach ( function ( m ) {
        console . log ( JSON . stringify ( m , null , '  ' ) ) ;
        // to list exports use Module.enumerateExportsSync(m.name)
    } ) ;

モジュールとエクスポートのリストを表示する

 sudo frida Process -- no - pause -- eval ' var x = { } ; Process . enumerateModulesSync ( ) . forEach ( function ( m ) { x [ m . name ] = Module . enumerateExportsSync ( m . name ) } ) ; x ' - q | less + F

出力例

 {
  "name" : "app_process64" ,
  "base" : "0x6313a1c000" ,
  "size" : 40960 ,
  "path" : "/system/bin/app_process64"
}
{
  "name" : "libappfuse.so" ,
  "base" : "0x749ab96000" ,
  "size" : 53248 ,
  "path" : "/system/lib64/libappfuse.so"
}
{
  "name" : "[email protected]" ,
  "base" : "0x749b448000" ,
  "size" : 90112 ,
  "path" : "/system/lib64/[email protected]"
}
{
  "name" : "[email protected]" ,
  "base" : "0x749ac9e000" ,
  "size" : 94208 ,
  "path" : "/system/lib64/[email protected]"
}
{
  "name" : "[email protected]" ,
  "base" : "0x74981e0000" ,
  "size" : 98304 ,
  "path" : "/system/lib64/[email protected]"
}
{
  "name" : "[email protected]" ,
  "base" : "0x73fb4cc000" ,
  "size" : 40960 
        拡大する