美团逆向-干掉反动态调试

Tweak.xm如下：

static int (*oldptrace)(int request, pid_t pid, caddr_t addr, int data);

static int newptrace(int request, pid_t pid, caddr_t addr, int data)

{

    return 0; //直接返回0

    /*

     // or return oldptrace with request -1

     if (request == 31) {

     request = -1;

     }

     return oldptrace(request,pid,addr,data);

     */

}

%ctor

{

    @autoreleasepool

    {

        MSHookFunction((void *)MSFindSymbol(NULL,"_ptrace"), (void *)newptrace, (void **)&oldptrace);

    }

}