ios安全加固

先说两个安全加固的实现

1,增加动态攻击方法防范
main函数中
#import <UIKit/UIKit.h>
#import "AppDelegate.h"
#import <dlfcn.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);
    
}

int main(int argc, char * argv[]) {
    @autoreleasepool {
        disable_gdb();
        return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
    }
}

2,增加越狱设备运行风险
#import "AppDelegate.h"

 if([[NSFileManager defaultManager] fileExistsAtPath:@"/Applications/Cydia.app"]){
        return YES;
    }
    if([[NSFileManager defaultManager] fileExistsAtPath:@"/Library/MobileSubstrate/MobileSubstrate.dylib"]){
        return YES;
    }
    if([[NSFileManager defaultManager] fileExistsAtPath:@"/var/lib/cydia"]){
        return YES;
    }