run the following query to create the user and pass records in the wa_settings table.
INSERT INTO `wa_settings` (`id`,`name`,`type`,`options`,`value`,`grp`,`subcategory`,`cond`,`description`,`variable`,`weight`,`spry_args`,`spry_error`,`help_text`)
VALUES
(5, 'admin_username', 'text', '<>', 'test', 'Site', NULL, NULL, '', 'Admin_Username', 72, '<2c20226e 6f6e6522 2c207b69 73526571 75697265 643a7472 75652c20 76616c69 64617465 4f6e3a5b 22626c75 72222c20 22636861 6e676522 5d7d>', NULL, '<54686973 20697320 74686520 41646d69 6e697374 72617469 76652055 7365726e 616d6520 74686174 2073686f 756c6420 62652072 65736572 76656420 666f7220 74686520 77656273 69746520 64657665 6c6f7065 722e204f 6e6c7920 74686973 20757365 72207769 6c6c2062 65206162 6c652074 6f206d6f 64696679 20746865 20646574 61696c73 206f6620 74686520 53657474 696e6773 20706167 652e2041 64646974 696f6e61 6c206164 6d696e69 73747261 74697665 20616363 6f756e74 73206361 6e206265 20637265 61746564 20756e64 65722074 68652027 55736572 73272073 65637469 6f6e206f 66207468 6520506f 77657243 4d532041 646d696e 202d2074 68657365 20757365 72732077 696c6c20 6e6f7420 62652061 626c6520 746f206d 6f646966 79207468 65736520 73657474 696e6773 2e>'),
(6, 'admin_password', 'text', '<>', '123', 'Site', NULL, NULL, '', 'Admin_Password', 73, NULL, NULL, NULL);
it will create them as, username: test. pass: 123
you can edit them after the records are created