Ever since Modx changed their password from MD5 all websites that describe resetting admin password from the database stopped working. This has kept me on a particular issue for more than a week, trying to fix the admin login issue. I eventually hit a goldmine while searching the web. I saw someone who has created a function that can helps generate the hash password password you can replace in your database to login with. You can find the link here https://rextester.com/TBVI30009 or you can save below code and run it locally.

I hope this helps someone. Drop a comment if it is useful for you.

<?php

    echo genHash('password!', 1);
	
	function genHash($password, $seed='1')
	{ 
		// $seed is user_id basically
		$algorithm = 'UNCRYPT';
		
		$salt = md5($password . $seed);
		
		switch($algorithm)
		{
			case 'BLOWFISH_Y':
				$salt = '$2y$07$' . substr($salt,0,22);
				break;
			case 'BLOWFISH_A':
				$salt = '$2a$07$' . substr($salt,0,22);
				break;
			case 'SHA512':
				$salt = '$6$' . substr($salt,0,16);
				break;
			case 'SHA256':
				$salt = '$5$' . substr($salt,0,16);
				break;
			case 'MD5':
				$salt = '$1$' . substr($salt,0,8);
				break;
		}
		
		if($algorithm!=='UNCRYPT')
		{
			$password = sha1($password) . crypt($password,$salt);
		}
		else $password = sha1($salt.$password);
		
		$result = strtolower($algorithm) . '>' . md5($salt.$password) . substr(md5($salt),0,8);
		
		return $result;
	}