An example of how to deny Ptrace attach in swift 3 project.
Ptrace provide a way to monitor your code, so we should disable the ptrace in our program.
- Open your project, create the
main.swiftfile, and paste the code snippet below:
import Foundation
import UIKit
autoreleasepool {
disable_gdb()
UIApplicationMain(
CommandLine.argc,
UnsafeMutableRawPointer(CommandLine.unsafeArgv)
.bindMemory(
to: UnsafeMutablePointer<Int8>.self,
capacity: Int(CommandLine.argc)),
nil,
NSStringFromClass(AppDelegate.self) //Or your class name
)
}
- Copy the
DenyPtrace.cto you project, or create the file and paste the code:
#include <stdio.h>
#import <dlfcn.h>
#import <sys/types.h>
typedef int (*ptrace_ptr_t)(int _request, pid_t _pid, caddr_t _addr, int _data);
#if !defined(PT_DENY_ATTACH)
#define PT_DENY_ATTACH 31
#endif
void disable_gdb() {
void* handle = dlopen(0, RTLD_GLOBAL | RTLD_NOW);
ptrace_ptr_t ptrace_ptr = dlsym(handle, "ptrace");
ptrace_ptr(PT_DENY_ATTACH, 0, 0, 0);
dlclose(handle);
}
- Add this lines to your project bridging header file.
#import "DenyPtrace.c"
void disable_gdb();
- Open
Appdelegate.swift, and comment out the@UIApplicationMainlabel.
Done