main.m

#import <objc/runtime.h>
#import <Foundation/Foundation.h>
#include <AppKit/AppKit.h>


@interface BCRegularLicensePatched : NSObject
    - (bool)isExpired;
    - (bool)isValid;
@end

@implementation BCRegularLicensePatched

    + (void)load {
        Class origClass = NSClassFromString(@"BCRegularLicense");
        
        method_exchangeImplementations(
            class_getInstanceMethod(origClass, @selector(isExpired)),
            class_getInstanceMethod(NSClassFromString(@"BCRegularLicensePatched"), @selector(isExpired))
        );

        method_exchangeImplementations(
            class_getInstanceMethod(origClass, @selector(isValid)),
            class_getInstanceMethod(NSClassFromString(@"BCRegularLicensePatched"), @selector(isValid))
        );
    }

    - (bool)isExpired {
        return false;
    }

    - (bool)isValid {
        return true;
    }

@end


@interface BCLicenseManagerPatched : NSObject
    - (long long)numberOfDaysLeftInTrialMode;
@end

@implementation BCLicenseManagerPatched

    + (void)load {
        Class origClass = NSClassFromString(@"BCLicenseManager");

        method_exchangeImplementations(
            class_getInstanceMethod(origClass, @selector(numberOfDaysLeftInTrialMode)),
            class_getInstanceMethod(NSClassFromString(@"BCLicenseManagerPatched"), @selector(numberOfDaysLeftInTrialMode))
        );
    }

    - (long long)numberOfDaysLeftInTrialMode {
        return 9000;
    }

@end