【iOS 逆向与安全】frida-trace 命令大全
作者：小陈
- 2022-11-22 四川
本文字数：7300 字
阅读完需：约 24 分钟
Frida-trace 常用命令
1、spawn - 冷启动
$ frida-trace -U -f com.apple.ExampleCode -m "+[NSURL URLWithString:]"
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2、attach - 热启动
$ frida-trace -UF -m "+[NSURL URLWithString:]"
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3、Hook 类方法
$ frida-trace -UF -m "+[NSURL URLWithString:]"
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4、Hook 实例方法
$ frida-trace -UF -m "-[NSURL host]"
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5、Hook 类的所有方法
$ frida-trace -UF -m "*[NSURL *]"
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6、模糊 Hook 类的所有方法
$ frida-trace -UF -m "*[*service* *]"
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7、模糊 Hook 所有类的特定方法
$ frida-trace -UF -m "*[* *sign*]"
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8、模糊 Hook 所有类的特定方法并忽略大小写
假设我们要 hook 所有类中包含 getSign 或 getsign 关键词的方法
$ frida-trace -UF -m "*[* get?ign]"
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9、模糊 Hook 所有类的特定方法并排除 viewDidLoad 方法
$ frida-trace -UF -m "*[DetailViewController *]" -M "-[DetailViewController viewDidLoad]"
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10、Hook 某个动态库
$ frida-trace -UF -I "libcommonCrypto*"
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11、Hook get 或 post 的接口地址
$ frida-trace -UF -m "+[NSURL URLWithString:]"
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js 代码如下：
{ onEnter(log, args, state) { var args2 = new ObjC.Object(args[2]); log(`-[NSURL URLWithString:${args2}]`); }, onLeave(log, retval, state) { }}
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12、Hook post 的 body
$ frida-trace -UF -m "-[NSMutableURLRequest setHTTPBody:]"
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js 代码如下：
{ onEnter(log, args, state) { var args2 = new ObjC.Object(args[2]); log(`-[NSMutableURLRequest setHTTPBody:${args2.bytes().readUtf8String(args2.length())}]`); }, onLeave(log, retval, state) { }}
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13、Hook 即将显示页面
$ frida-trace -UF -m "-[UINavigationController pushViewController:animated:]" -m "-[UIViewController presentViewController:animated:completion:]"
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pushViewController:animated:方法的 js 代码如下：
{ onEnter(log, args, state) { var args2 = new ObjC.Object(args[2]); log(`-[UINavigationController pushViewController:${args2.$className} animated:${args[3]}]`); }, onLeave(log, retval, state) { }}
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presentViewController:animated:completion:方法对应的 js 代码如下：
{ onEnter(log, args, state) { var args2 = new ObjC.Object(args[2]); log(`-[UIViewController presentViewController:${args2.$className} animated:${args[3]} completion:${args[4]}]`); }, onLeave(log, retval, state) { }}
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14、Hook MD5 函数
$ frida-trace -UF -i "CC_MD5"
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js 代码如下：
{ onEnter(log, args, state) { this.args0 = args[0]; // 入参 this.args2 = args[2]; // 返回值指针 }, onLeave(log, retval, state) { var ByteArray = Memory.readByteArray(this.args2, 16); var uint8Array = new Uint8Array(ByteArray);
var str = ""; for(var i = 0; i < uint8Array.length; i++) { var hextemp = (uint8Array[i].toString(16)) if(hextemp.length == 1){ hextemp = "0" + hextemp } str += hextemp; } log(`CC_MD5(${this.args0.readUtf8String()})`); // 入参 log(`CC_MD5()=${str}=`); // 返回值 }}
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15、Hook Base64 编码方法
$ frida-trace -UF -m "-[NSData base64EncodedStringWithOptions:]"
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js 代码如下：
{ onEnter(log, args, state) { this.self = args[0]; }, onLeave(log, retval, state) { var before = ObjC.classes.NSString.alloc().initWithData_encoding_(this.self, 4); var after = new ObjC.Object(retval); log(`-[NSData base64EncodedStringWithOptions:]before=${before}=`); log(`-[NSData base64EncodedStringWithOptions:]after=${after}=`); }}
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16、Hook Base64 解码方法
$ frida-trace -UF -m "-[NSData initWithBase64EncodedData:options:]" -m "-[NSData initWithBase64EncodedString:options:]"
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initWithBase64EncodedData:options:方法对应的 js 代码如下：
{ onEnter(log, args, state) { this.arg2 = args[2]; }, onLeave(log, retval, state) { var before = ObjC.classes.NSString.alloc().initWithData_encoding_(this.arg2, 4); var after = ObjC.classes.NSString.alloc().initWithData_encoding_(retval, 4); log(`-[NSData initWithBase64EncodedData:]before=${before}=`); log(`-[NSData initWithBase64EncodedData:]after=${after}=`); }}
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initWithBase64EncodedString:options:方法对应的 js 代码如下：
{ onEnter(log, args, state) { this.arg2 = args[2]; }, onLeave(log, retval, state) { var before = new ObjC.Object(this.arg2); var after = ObjC.classes.NSString.alloc().initWithData_encoding_(retval, 4); log(`-[NSData initWithBase64EncodedString:]before=${before}=`); log(`-[NSData initWithBase64EncodedString:]after=${after}=`); }}
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17、Hook 加密函数 AES、DES、3DES
frida-trace -UF -i CCCrypt
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js 代码如下：
{ onEnter: function(log, args, state) { this.op = args[0] this.alg = args[1] this.options = args[2] this.key = args[3] this.keyLength = args[4] this.iv = args[5] this.dataIn = args[6] this.dataInLength = args[7] this.dataOut = args[8] this.dataOutAvailable = args[9] this.dataOutMoved = args[10]
log('CCCrypt(' + 'op: ' + this.op + '[0:加密,1:解密]' + ', ' + 'alg: ' + this.alg + '[0:AES128,1:DES,2:3DES]' + ', ' + 'options: ' + this.options + '[1:ECB,2:CBC,3:CFB]' + ', ' + 'key: ' + this.key + ', ' + 'keyLength: ' + this.keyLength + ', ' + 'iv: ' + this.iv + ', ' + 'dataIn: ' + this.dataIn + ', ' + 'inLength: ' + this.inLength + ', ' + 'dataOut: ' + this.dataOut + ', ' + 'dataOutAvailable: ' + this.dataOutAvailable + ', ' + 'dataOutMoved: ' + this.dataOutMoved + ')')
if (this.op == 0) { log("dataIn:") log(hexdump(ptr(this.dataIn), { length: this.dataInLength.toInt32(), header: true, ansi: true })) log("key: ") log(hexdump(ptr(this.key), { length: this.keyLength.toInt32(), header: true, ansi: true })) log("iv: ") log(hexdump(ptr(this.iv), { length: this.keyLength.toInt32(), header: true, ansi: true })) } }, onLeave: function(log, retval, state) { if (this.op == 1) { log("dataOut:") log(hexdump(ptr(this.dataOut), { length: Memory.readUInt(this.dataOutMoved), header: true, ansi: true })) log("key: ") log(hexdump(ptr(this.key), { length: this.keyLength.toInt32(), header: true, ansi: true })) log("iv: ") log(hexdump(ptr(this.iv), { length: this.keyLength.toInt32(), header: true, ansi: true })) } else { log("dataOut:") log(hexdump(ptr(this.dataOut), { length: Memory.readUInt(this.dataOutMoved), header: true, ansi: true })) } log("CCCrypt did finish") }}
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18、Hook 加密函数 RSA
rsa 加密有公钥加密和私钥加密两种方式
$ frida-trace -UF -i "SecKeyEncrypt" -i "SecKeyRawSign"
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SecKeyEncrypt公钥加密函数对应的 js 代码如下：
{ onEnter(log, args, state) { // 由于同一条加密信息可能会多次调用该函数，故在这输出该函数的调用栈。可根据栈信息去分析上层函数 log(`SecKeyEncrypt()=${args[2].readCString()}=`); log('SecKeyEncrypt called from:\n' + Thread.backtrace(this.context, Backtracer.ACCURATE) .map(DebugSymbol.fromAddress).join('\n') + '\n'); }, onLeave(log, retval, state) { }}
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SecKeyRawSign私钥加密函数对应的 js 代码如下：
{ onEnter(log, args, state) { log(`SecKeyRawSign()=${args[2].readCString()}=`); log('SecKeyRawSign called from:\n' + Thread.backtrace(this.context, Backtracer.ACCURATE) .map(DebugSymbol.fromAddress).join('\n') + '\n'); }, onLeave(log, retval, state) { }}
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19、修改方法的入参
$ frida-trace -UF -m "-[DetailViewController setObj:]"
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js 代码如下：
/* * Auto-generated by Frida. Please modify to match the signature of -[DetailViewController setObj:]. * This stub is currently auto-generated from manpages when available. * * For full API reference, see: https://frida.re/docs/javascript-api/ */
{ /** * Called synchronously when about to call -[DetailViewController setObj:]. * * @this {object} - Object allowing you to store state for use in onLeave. * @param {function} log - Call this function with a string to be presented to the user. * @param {array} args - Function arguments represented as an array of NativePointer objects. * For example use args[0].readUtf8String() if the first argument is a pointer to a C string encoded as UTF-8. * It is also possible to modify arguments by assigning a NativePointer object to an element of this array. * @param {object} state - Object allowing you to keep state across function calls. * Only one JavaScript function will execute at a time, so do not worry about race-conditions. * However, do not use this to store function arguments across onEnter/onLeave, but instead * use "this" which is an object for keeping state local to an invocation. */ onEnter(log, args, state) { var self = new ObjC.Object(args[0]); // 当前对象 var method = args[1].readUtf8String(); // 当前方法名 log(`[${self.$className} ${method}]`);
// 字符串 // var str = ObjC.classes.NSString.stringWithString_("hi wit!") // 对应的oc语法：NSString *str = [NSString stringWithString:@"hi with!"]; // args[2] = str // 修改入参为字符串
// 数组 // var array = ObjC.classes.NSMutableArray.array(); // 对应的oc语法：NSMutableArray array = [NSMutablearray array]; // array.addObject_("item1"); // 对应的oc语法：[array addObject:@"item1"]; // array.addObject_("item2"); // 对应的oc语法：[array addObject:@"item2"]; // args[2] = array; // 修改入参为数组
// 字典 // var dictionary = ObjC.classes.NSMutableDictionary.dictionary(); // 对应的oc语法:NSMutableDictionary *dictionary = [NSMutableDictionary dictionary]; // dictionary.setObject_forKey_("value1", "key1"); // 对应的oc语法：[dictionary setObject:@"value1" forKey:@"key1"] // dictionary.setObject_forKey_("value2", "key2"); // 对应的oc语法：[dictionary setObject:@"value2" forKey:@"key2"] // args[2] = dictionary; // 修改入参为字典
// 字节 var data = ObjC.classes.NSMutableData.data(); // 对应的oc语法：NSMutableData *data = [NSMutableData data]; var str = ObjC.classes.NSString.stringWithString_("hi wit!") // 获取一个字符串。 对应的oc语法：NSString *str = [NSString stringWithString:@"hi with!"]; var subData = str.dataUsingEncoding_(4); // 将str转换为data,编码为utf-8。对应的oc语法：NSData *subData = [str dataUsingEncoding:NSUTF8StringEncoding]; data.appendData_(subData); // 将subData添加到data。对应的oc语法：[data appendData:subData]; args[2] = data; // 修改入参字段
// 更多数据类型：https://developer.apple.com/documentation/foundation },
onLeave(log, retval, state) {
}}
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20、修改方法的返回值
$ frida-trace -UF -m "-[DetailViewController Obj]"
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js 代码如下：
{ onEnter(log, args, state) {
}, onLeave(log, retval, state) { // 字符串 var str = ObjC.classes.NSString.stringWithString_("hi wit!") // 对应的oc语法：NSString *str = [NSString stringWithString:@"hi with!"]; retval.replace(str) // 修改返回值 var after = new ObjC.Object(retval); // 打印出来是个指针时，请用该方式转换后再打印 log(`before:=${retval}=`); log(`after:=${after}=`); }}
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21、打印字符串、数组、字典
$ frida-trace -UF -m "-[DetailViewController setObj:]"
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js 代码如下：
{ onEnter(log, args, state) { var self = new ObjC.Object(args[0]); // 当前对象 var method = args[1].readUtf8String(); // 当前方法名 log(`[${self.$className} ${method}]`);
var before = args[2]; // 注意，日志输出请直接使用log函数。不要使用console.log() var after = new ObjC.Object(args[2]); // 打印出来是个指针时，请用该方式转换后再打印 log(`before:=${before}=`); log(`after:=${after}=`); }, onLeave(log, retval, state) {
}}
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22、打印 NSData
$ frida-trace -UF -m "-[DetailViewController setObj:]"
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js 代码如下：
{ onEnter(log, args, state) { var self = new ObjC.Object(args[0]); // 当前对象 var method = args[1].readUtf8String(); // 当前方法名 log(`[${self.$className} ${method}]`);
var before = args[2];
// 注意，日志输出请直接使用log函数。不要使用console.log() var after = new ObjC.Object(args[2]); // 打印NSData var outValue = after.bytes().readUtf8String(after.length()) // 将data转换为string log(`before:=${before}=`); log(`after:=${outValue}=`); }, onLeave(log, retval, state) {
}}
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23、打印对象的所有属性和方法
$ frida-trace -UF -m "-[DetailViewController setObj:]"
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js 代码如下：
{ onEnter(log, args, state) { var self = new ObjC.Object(args[0]); // 当前对象 var method = args[1].readUtf8String(); // 当前方法名 log(`[${self.$className} ${method}]`);
var customObj = new ObjC.Object(args[2]); // 自定义对象 // 打印该对象所有属性 var ivarList = customObj.$ivars; for (key in ivarList) { log(`key${key}=${ivarList[key]}=`); }
// 打印该对象所有方法 var methodList = customObj.$methods; for (var i=0; i<methodList.length; i++) { log(`method=${methodList[i]}=`); } }, onLeave(log, retval, state) {
}}
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24、打印调用栈
$ frida-trace -UF -m "+[NSURL URLWithString:]"
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js 代码如下：
{ onEnter(log, args, state) { var url = new ObjC.Object(args[2]); log(`+[NSURL URLWithString:${url}]`); log('NSURL URLWithString: called from:\n' + Thread.backtrace(this.context, Backtracer.ACCURATE) .map(DebugSymbol.fromAddress).join('\n') + '\n'); }, onLeave(log, retval, state) { }}
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25、日志输出到文件
$ frida-trace -UF -m "+[NSURL URLWithString:]" -o run.log
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26、更多数据类型
/** * Converts to a signed 32-bit integer. */ toInt32(): number;
/** * Converts to an unsigned 32-bit integer. */ toUInt32(): number;
/** * Converts to a “0x”-prefixed hexadecimal string, unless a `radix` * is specified. */ toString(radix?: number): string;
/** * Converts to a JSON-serializable value. Same as `toString()`. */ toJSON(): string;
/** * Returns a string containing a `Memory#scan()`-compatible match pattern for this pointer’s raw value. */ toMatchPattern(): string;
readPointer(): NativePointer; readS8(): number; readU8(): number; readS16(): number; readU16(): number; readS32(): number; readU32(): number; readS64(): Int64; readU64(): UInt64; readShort(): number; readUShort(): number; readInt(): number; readUInt(): number; readLong(): number | Int64; readULong(): number | UInt64; readFloat(): number; readDouble(): number; readByteArray(length: number): ArrayBuffer | null; readCString(size?: number): string | null; readUtf8String(size?: number): string | null; readUtf16String(length?: number): string | null;
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以上就是关于 frida-trace 在 iOS 端的常用命令，希望能帮助到大家。同时也建议大家阅读官方文档：https://frida.re/docs/frida-trace/
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