Hello aspirant 

Please mention the name of exam you are asking for. 

Procedure is almost same for forgotten password and application number. Go to the original site of the exam there click on download admin card by application number and date of birth then click on forgot application number fill up your personal details click on get application number. Follow same procedure for password by clicking on download admin card by application number and password click on forgot password and get you password. 

I would be able to help you more precisely if you mention the name of exam you are asking for. 

Good Luck.