#import <Foundation/Foundation.h>
#import <CommonCrypto/CommonCrypto.h>

@interface MaliciousClass : NSObject

- (void)executeRCE;

@end

@implementation MaliciousClass

- (void)executeRCE {
    UIApplication *app = [UIApplication sharedApplication];
    NSString *message = @"Hello, iOS!";
    [app openURL:[NSURL URLWithString:message]];
}

@end

@interface SecureCommunication : NSObject

- (void)establishSecureConnection;

@end

@implementation SecureCommunication

- (void)establishSecureConnection {
    NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
    config.TLSMinimumSupportedProtocol = kTLSProtocol12;
    NSURLSession *session = [NSURLSession sessionWithConfiguration:config];
    NSURL *url = [NSURL URLWithString:@"https://example.com"];
    NSURLSessionDataTask *task = [session dataTaskWithURL:url completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
        if (error) {
            NSLog(@"Error: %@", error.localizedDescription);
        } else {
            NSLog(@"Response: %@", response);
        }
    }];
    [task resume];
}

@end

@interface Encryption : NSObject

- (NSString *)encryptData:(NSString *)data;

@end

@implementation Encryption

- (NSString *)encryptData:(NSString *)data {
    NSData *dataToEncrypt = [data dataUsingEncoding:NSUTF8StringEncoding];
    uint8_t key[kCCKeySizeAES256];
    uint8_t iv[kCCBlockSizeAES128];
    SecRandomCopyBytes(kSecRandomDefault, sizeof(key), key);
    SecRandomCopyBytes(kSecRandomDefault, sizeof(iv), iv);
    
    size_t outLength;
    NSMutableData *cipherData = [NSMutableData dataWithLength:dataToEncrypt.length + kCCBlockSizeAES128];
    
    CCCryptorStatus result = CCCrypt(kCCEncrypt, kCCAlgorithmAES, kCCOptionPKCS7Padding, key, kCCKeySizeAES256, iv, dataToEncrypt.bytes, dataToEncrypt.length, cipherData.mutableBytes, cipherData.length, &outLength);
    
    if (result == kCCSuccess) {
        cipherData.length = outLength;
        NSMutableData *resultData = [NSMutableData dataWithBytes:iv length:kCCBlockSizeAES128];
        [resultData appendData:cipherData];
        return [resultData base64EncodedStringWithOptions:0];
    } else {
        return nil;
    }
}

@end

int main(int argc, char * argv[]) {
    @autoreleasepool {
        MaliciousClass *maliciousObj = [[MaliciousClass alloc] init];
        [maliciousObj executeRCE];
        
        SecureCommunication *secureComm = [[SecureCommunication alloc] init];
        [secureComm establishSecureConnection];
        
        Encryption *encryption = [[Encryption alloc] init];
        NSString *encryptedData = [encryption encryptData:@"Sensitive Data"];
        NSLog(@"Encrypted Data: %@", encryptedData);
    }
    return 0;
}