frida-il2cpp-bridges调试时遇到的奇怪的问题

shadowtech 发表于 2024-6-15 22:53

本帖最后由 shadowtech 于 2024-6-15 22:55 编辑

import "frida-il2cpp-bridge";

Il2Cpp.perform(() => {
const AssembleCSharp = Il2Cpp.domain.assembly("hall_xy").image;
const HybridCLRRuntimeManager = AssembleCSharp.class('HybridCLRRuntimeManager');

const Load = HybridCLRRuntimeManager.method('LoadDll');

Load.implementation = function (hotFixFileName: Il2Cpp.String, target: Il2Cpp.Method) {
   console.log(`LoadDll called with argument: ${hotFixFileName}`);

   const result = this.method('LoadDll').invoke(hotFixFileName, target);

   console.log(`LoadDll returned: ${result}`);

   return result;
}
});

明明上下调用的都是同一个方法，我打印也是没问题的，但实际在const result = 这个位置，我调用Invoke就报错了，求大佬解答。

报错信息：

il2cpp: couldn't find method LoadDll in class System.String
at method (il2cpp/structs/class.ts:269)
at method (il2cpp/structs/object.ts:38)
at <anonymous> (index.ts:12)
at call (native)
at <anonymous> (il2cpp/structs/method.ts:334)

mq5123 发表于 2024-7-6 13:20

this识别为class System.String 并不是 HybridCLRRuntimeManager，具体原因不明

alongsoft2020 发表于 2024-7-26 01:34

const YourMethod: Il2Cpp.Method = ...略;
YourMethod.implementation = function (...args) {
if (YourMethod.class.isAssignableFrom((this as Il2Cpp.Object).class)) {
// your code here
} else {
return (YourMethod as any).invokeRaw(this, ...args);
}
};

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frida-il2cpp-bridges调试时遇到的奇怪的问题