frida备忘录
zsk Lv4
  2022-05-20 17:25:40 2022-05-20 17:25   2022-05-20 17:25:40    2.5k 字  14 分钟  

frida hook某个类下所有方法

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Java.perform(function () {
    travel('com.xxx.xxx')
})

function printstack() {
    console.log(Java.use("android.util.Log").getStackTraceString(Java.use("java.lang.Exception").$new()))
}

function travel(className) {
    var NetContent = Java.use(className)
    //1.得到这个类下面的所有方法
    var Methods = NetContent.class.getDeclaredMethods()
    //2.遍历所有的方法
    Methods.forEach(function (Method) {
        //得到这个方法的所有重载 ovelroads
        var methodName = Method.getName()
        var overloads = NetContent[methodName].overloads
        //遍历重载
        overloads.forEach(function (overload) {

            var prot = '('
            overload.argumentTypes.forEach(function (argumentType) {
                prot += argumentType.className + ','
            })
            prot += ')'

            overload.implementation = function () {
                console.log('----------------------------------')
                console.log(className + '.' + methodName + prot)
                printstack()
                for (var i = 0; i < arguments.length; i++) {
                    console.log('argument:' + JSON.stringify(arguments[i]))
                }
                var ret = this[methodName].apply(this, arguments)
                console.log(methodName + 'return:' + JSON.stringify(ret))
                return ret
            }
        })
    })
}

hookEvent

trace所有的mOnClickListener，hook它们的onClick函数，实现点到哪里，定位到哪个类的功能。

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var jclazz = null;
var jobj = null;

function getObjClassName(obj) {
    if (!jclazz) {
        var jclazz = Java.use("java.lang.Class");
    }
    if (!jobj) {
        var jobj = Java.use("java.lang.Object");
    }
    return jclazz.getName.call(jobj.getClass.call(obj));
}

function watch(obj, mtdName) {
    var listener_name = getObjClassName(obj);
    var target = Java.use(listener_name);
    if (!target || !mtdName in target) {
        return;
    }
    // send("[WatchEvent] hooking " + mtdName + ": " + listener_name);
    target[mtdName].overloads.forEach(function (overload) {
        overload.implementation = function () {
            //send("[WatchEvent] " + mtdName + ": " + getObjClassName(this));
            console.log("[WatchEvent] " + mtdName + ": " + getObjClassName(this))
            return this[mtdName].apply(this, arguments);
        };
    })
}

function OnClickListener() {
    Java.perform(function () {

        //以spawn启动进程的模式来attach的话
        Java.use("android.view.View").setOnClickListener.implementation = function (listener) {
            if (listener != null) {
                watch(listener, 'onClick');
            }
            return this.setOnClickListener(listener);
        };

        //如果frida以attach的模式进行attch的话
        Java.choose("android.view.View$ListenerInfo", {
            onMatch: function (instance) {
                instance = instance.mOnClickListener.value;
                if (instance) {
                    console.log("mOnClickListener name is :" + getObjClassName(instance));
                    watch(instance, 'onClick');
                }
            },
            onComplete: function () {
            }
        })
    })
}
setImmediate(OnClickListener);

系统库常用算法hook

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function printstack() {
    console.log(Java.use("android.util.Log").getStackTraceString(Java.use("java.lang.Exception").$new()))
}

Java.perform(function () {
    console.log('enter')
    var Base64 = Java.use('android.util.Base64')
    var ByteString = Java.use("com.android.okhttp.okio.ByteString");
    var secretKeySpec = Java.use('javax.crypto.spec.SecretKeySpec');
    secretKeySpec.$init.overload('[B', 'java.lang.String').implementation = function (a, b) {
        console.log("======================================");
        printstack();
        var result = this.$init(a, b);
        console.log("算法名：" + b + "|str密钥:" + Java.use('java.lang.String').$new(a));
        console.log("算法名：" + b + "|Hex密钥:" + ByteString.of(a).hex());
        return result;
    }

    var DESKeySpec = Java.use('javax.crypto.spec.DESKeySpec');
    DESKeySpec.$init.overload('[B').implementation = function (a) {
        console.log("======================================");
        printstack();
        var result = this.$init(a);
        var bytes_key_des = this.getKey();
        console.log("des密钥  |str " + Java.use('java.lang.String').$new(bytes_key_des));
        console.log("des密钥  |hex " + ByteString.of(bytes_key_des).hex());
        return result;
    }

    DESKeySpec.$init.overload('[B', 'int').implementation = function (a, b) {
        console.log("======================================");
        printstack();
        var result = this.$init(a, b);

        var bytes_key_des = this.getKey();
        console.log("des密钥  |str " + Java.use('java.lang.String').$new(bytes_key_des));
        console.log("des密钥  |hex " + ByteString.of(bytes_key_des).hex());
        return result;
    }

    var mac = Java.use('javax.crypto.Mac');
    mac.getInstance.overload('java.lang.String').implementation = function (a) {
        console.log("======================================");
        printstack();
        var result = this.getInstance(a);

        console.log("算法名：" + a);
        return result;
    }
    mac.update.overload('[B').implementation = function (a) {
        console.log("======================================");
        printstack();
        this.update(a);

        console.log("update:" + Java.use('java.lang.String').$new(a))
    }
    mac.update.overload('[B', 'int', 'int').implementation = function (a, b, c) {
        console.log("======================================");
        printstack();
        this.update(a, b, c)

        console.log("update:" + Java.use('java.lang.String').$new(a) + "|" + b + "|" + c);
    }
    mac.doFinal.overload().implementation = function () {
        console.log("======================================");
        printstack();
        var result = this.doFinal();

        console.log("mac doFinal结果: |str  :" + Java.use('java.lang.String').$new(result));
        console.log("mac doFinal结果: |hex  :" + ByteString.of(result).hex());
        console.log("mac doFinal结果: |base64  :" + Base64.encodeToString(result, 0));
        return result;
    }
    mac.doFinal.overload('[B').implementation = function (a) {
        console.log("======================================");
        printstack();
        var result = this.doFinal(a);

        console.log("doFinal参数: |str  :" + Java.use('java.lang.String').$new(a));
        console.log("doFinal结果: |str  :" + Java.use('java.lang.String').$new(result));
        console.log("doFinal结果: |hex  :" + ByteString.of(result).hex());
        console.log("doFinal结果: |base64  :" + Base64.encodeToString(result, 0));
        return result;
    }

    var md = Java.use('java.security.MessageDigest');
    md.getInstance.overload('java.lang.String', 'java.lang.String').implementation = function (a, b) {
        console.log("======================================");
        printstack();

        console.log("算法名：" + a);
        return this.getInstance(a, b);
    }
    md.getInstance.overload('java.lang.String').implementation = function (a) {
        console.log("======================================");
        printstack();

        console.log("算法名：" + a);
        return this.getInstance(a);
    }
    md.update.overload('[B').implementation = function (a) {
        console.log("======================================");
        printstack();

        console.log("update:" + Java.use('java.lang.String').$new(a))
        return this.update(a);
    }
    md.update.overload('[B', 'int', 'int').implementation = function (a, b, c) {
        console.log("======================================");
        printstack();
        console.log("update:" + Java.use('java.lang.String').$new(a) + "|" + b + "|" + c);
        return this.update(a, b, c);
    }
    md.digest.overload().implementation = function () {
        console.log("======================================");
        printstack();
        var result = this.digest();
        console.log("digest11结果:" + ByteString.of(result).hex());
        console.log("digest结果:" + Base64.encodeToString(result, 0));
        return result;
    }
    md.digest.overload('[B').implementation = function (a) {
        console.log("======================================");
        printstack();
        console.log("digest参数:" + Java.use('java.lang.String').$new(a));
        var result = this.digest(a);
        console.log("digest结果:" + ByteString.of(result).hex());
        console.log("digest结果:" + Base64.encodeToString(result, 0));
        return result;
    }

    var ivParameterSpec = Java.use('javax.crypto.spec.IvParameterSpec');
    ivParameterSpec.$init.overload('[B').implementation = function (a) {
        console.log("======================================");
        printstack();
        var result = this.$init(a);
        console.log("iv向量: |str:" + Java.use('java.lang.String').$new(a));
        console.log("iv向量: |hex:" + ByteString.of(a).hex());
        return result;
    }

    var cipher = Java.use('javax.crypto.Cipher');
    cipher.getInstance.overload('java.lang.String').implementation = function (a) {
        console.log("======================================");
        printstack();
        var result = this.getInstance(a);

        console.log("模式填充:" + a);
        return result;
    }
    cipher.init.overload('int', 'java.security.Key').implementation = function (a, b) {
        console.log("======================================");
        printstack();
        var result = this.init(a, b);

        if (N_ENCRYPT_MODE == a) {
            console.log("init  | 加密模式");
        } else if (N_DECRYPT_MODE == a) {
            console.log("init  | 解密模式");
        }

        var bytes_key = b.getEncoded();
        console.log("init key:" + "|str密钥:" + Java.use('java.lang.String').$new(bytes_key));
        console.log("init key: |base64  :" + Base64.encodeToString(bytes_key, 0));
        console.log("init key:" + "|Hex密钥:" + ByteString.of(bytes_key).hex());
        return result;
    }
    cipher.init.overload('int', 'java.security.cert.Certificate').implementation = function (a, b) {
        console.log("======================================");
        printstack();
        var result = this.init(a, b);


        if (N_ENCRYPT_MODE == a) {
            console.log("init  | 加密模式");
        } else if (N_DECRYPT_MODE == a) {
            console.log("init  | 解密模式");
        }

        return result;
    }
    cipher.init.overload('int', 'java.security.Key', 'java.security.spec.AlgorithmParameterSpec').implementation = function (a, b, c) {
        console.log("======================================");
        printstack();
        var result = this.init(a, b, c);


        if (N_ENCRYPT_MODE == a) {
            console.log("init  | 加密模式");
        } else if (N_DECRYPT_MODE == a) {
            console.log("init  | 解密模式");
        }

        var bytes_key = b.getEncoded();
        console.log("init key:" + "|str密钥:" + Java.use('java.lang.String').$new(bytes_key));
        console.log("init key: |base64  :" + Base64.encodeToString(bytes_key, 0));
        console.log("init key:" + "|Hex密钥:" + ByteString.of(bytes_key).hex());

        return result;
    }
    cipher.init.overload('int', 'java.security.cert.Certificate', 'java.security.SecureRandom').implementation = function (a, b, c) {
        console.log("======================================");
        printstack();
        var result = this.init(a, b, c);
        if (N_ENCRYPT_MODE == a) {
            console.log("init  | 加密模式");
        } else if (N_DECRYPT_MODE == a) {
            console.log("init  | 解密模式");
        }
        return result;
    }
    cipher.init.overload('int', 'java.security.Key', 'java.security.SecureRandom').implementation = function (a, b, c) {
        console.log("======================================");
        printstack();
        var result = this.init(a, b, c);
        if (N_ENCRYPT_MODE == a) {
            console.log("init  | 加密模式");
        } else if (N_DECRYPT_MODE == a) {
            console.log("init  | 解密模式");
        }

        var bytes_key = b.getEncoded();
        console.log("init key:" + "|str密钥:" + Java.use('java.lang.String').$new(bytes_key));
        console.log("init key: |base64  :" + Base64.encodeToString(bytes_key, 0));
        console.log("init key:" + "|Hex密钥:" + ByteString.of(bytes_key).hex());
        return result;
    }
    cipher.init.overload('int', 'java.security.Key', 'java.security.AlgorithmParameters').implementation = function (a, b, c) {
        console.log("======================================");
        printstack();
        var result = this.init(a, b, c);
        if (N_ENCRYPT_MODE == a) {
            console.log("init  | 加密模式");
        } else if (N_DECRYPT_MODE == a) {
            console.log("init  | 解密模式");
        }

        var bytes_key = b.getEncoded();
        console.log("init key:" + "|str密钥:" + Java.use('java.lang.String').$new(bytes_key));
        console.log("init key: |base64  :" + Base64.encodeToString(bytes_key, 0));
        console.log("init key:" + "|Hex密钥:" + ByteString.of(bytes_key).hex());
        return result;
    }
    cipher.init.overload('int', 'java.security.Key', 'java.security.AlgorithmParameters', 'java.security.SecureRandom').implementation = function (a, b, c, d) {
        console.log("======================================");
        printstack();
        var result = this.init(a, b, c, d);
        if (N_ENCRYPT_MODE == a) {
            console.log("init  | 加密模式");
        } else if (N_DECRYPT_MODE == a) {
            console.log("init  | 解密模式");
        }

        var bytes_key = b.getEncoded();
        console.log("init key:" + "|str密钥:" + Java.use('java.lang.String').$new(bytes_key));
        console.log("init key: |base64  :" + Base64.encodeToString(bytes_key, 0));
        console.log("init key:" + "|Hex密钥:" + ByteString.of(bytes_key).hex());
        return result;
    }
    cipher.init.overload('int', 'java.security.Key', 'java.security.spec.AlgorithmParameterSpec', 'java.security.SecureRandom').implementation = function (a, b, c, d) {
        console.log("======================================");
        printstack();
        var result = this.update(a, b, c, d);
        if (N_ENCRYPT_MODE == a) {
            console.log("init  | 加密模式");
        } else if (N_DECRYPT_MODE == a) {
            console.log("init  | 解密模式");
        }

        var bytes_key = b.getEncoded();
        console.log("init key:" + "|str密钥:" + Java.use('java.lang.String').$new(bytes_key));
        console.log("init key: |base64  :" + Base64.encodeToString(bytes_key, 0));
        console.log("init key:" + "|Hex密钥:" + ByteString.of(bytes_key).hex());
        return result;
    }

    cipher.update.overload('[B').implementation = function (a) {
        console.log("======================================");
        printstack();
        var result = this.update(a);
        console.log("======================================");
        console.log("update:" + Java.use('java.lang.String').$new(a));
        return result;
    }
    cipher.update.overload('[B', 'int', 'int').implementation = function (a, b, c) {
        console.log("======================================");
        printstack();
        var result = this.update(a, b, c);

        console.log("update:" + Java.use('java.lang.String').$new(a) + "|" + b + "|" + c);
        return result;
    }
    cipher.doFinal.overload().implementation = function () {
        console.log("======================================");
        printstack();
        var result = this.doFinal();

        console.log("doFinal结果: |str  :" + Java.use('java.lang.String').$new(result));
        console.log("doFinal结果: |hex  :" + ByteString.of(result).hex());
        console.log("doFinal结果: |base64  :" + Base64.encodeToString(result, 0));
        return result;
    }
    cipher.doFinal.overload('[B').implementation = function (a) {
        console.log("======================================");
        printstack();
        var result = this.doFinal(a);

        console.log("doFinal参数: |str  :" + Java.use('java.lang.String').$new(a));
        console.log("doFinal参数: |base64  :" + Base64.encodeToString(a, 0));
        console.log("doFinal结果: |str  :" + Java.use('java.lang.String').$new(result));
        console.log("doFinal结果: |hex  :" + ByteString.of(result).hex());
        console.log("doFinal结果: |base64  :" + Base64.encodeToString(result, 0));
        return result;
    }

    var x509EncodedKeySpec = Java.use('java.security.spec.X509EncodedKeySpec');
    x509EncodedKeySpec.$init.overload('[B').implementation = function (a) {
        console.log("======================================");
        printstack();
        var result = this.$init(a);

        console.log("RSA密钥:" + Base64.encodeToString(a, 0));
        return result;
    }

    var rSAPublicKeySpec = Java.use('java.security.spec.RSAPublicKeySpec');
    rSAPublicKeySpec.$init.overload('java.math.BigInteger', 'java.math.BigInteger').implementation = function (a, b) {
        console.log("======================================");
        printstack();
        var result = this.$init(a, b);

        console.log("RSA密钥N:" + a.toString(16));
        console.log("RSA密钥E:" + b.toString(16));
        return result;
    }
})
frida备忘录
posts/37757/
作者
zsk
发布于
2022-05-20 17:25
许可
 评论
  1. 1. frida hook某个类下所有方法
  2. 2. hookEvent
  3. 3. 系统库常用算法hook