the problem that i tried the curl command from chrome network tab and it didn't work ! so i looked in the page html and found that it does this 1- Encrypt the password to sha256 2- then base64 encode the sha256 hash 3- then add the hash to the challange ( that it gets from another page ) 4- then sha 256 the output i tried to that step by step and it still doesn't work ! the curl command from chrome without cleaning `curl "http://192.168.1.1/index/login.cgi" -H "Connection: keep-alive" -H "Cache-Control: max-age=0" -H "Origin: http://192.168.1.1" -H "Upgrade-Insecure-Requests: 1" -H "DNT: 1" -H "Content-Type: application/x-www-form-urlencoded" -H "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36" -H "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3" -H "Referer: http://192.168.1.1/html/index.asp" -H "Accept-Encoding: gzip, deflate" -H "Accept-Language: en-US,en;q=0.9,ar;q=0.8" -H "Cookie: Language=en; SessionID_R3=7EGmyRl6PcjZyCodTPl8zshYtbagRfUEIYm4njyVzkHAjoRgfeg8OLYerWewZlUwo5r4FeTPnsbRyB7eeCiVNf22aoU6E7eDAqAXc4w8iINkdt3srn3pdKYCDjvXmZw5; FirstMenu=Admin_0; SecondMenu=Admin_0_0; ThirdMenu=Admin_0_0_0" --data "Username=admin&Password=3bacd54fb595f90906feb6c68659c96bee5a2f4a594aea3fc50a56c306a04cb5&challange=IkYo7bcXU68FzOOzCPBg" --compressed --insecure` the command after cleaning it up a little bit `curl "http://192.168.1.1/index/login.cgi" -H "Cookie: Language=en; FirstMenu=Admin_0; SecondMenu=Admin_0_0; ThirdMenu=Admin_0_0_0" --data "Username=user&Password=16e1c03a0075fa68ddca3398b5cd6342692cb9868b68a4c9c0a92b89311667a8&challange=KCoMUJ4u3SEf7bfDJ3o9"` i have removed SessionID_R3 from it as i think it's not necessary and tried the command with it and it didn't make any difference. a succeed connection in wireshark
the SessionID_R3 isn't necessary to login but necessary to view auth required pages and it gives you a new one when you successful login the working command `curl "http://192.168.1.1/index/login.cgi" -H "Cookie: Language=en" --data "Username=user&Password=16e1c03a0075fa68ddca3398b5cd6342692cb9868b68a4c9c0a92b89311667a8&challange=KCoMUJ4u3SEf7bfDJ3o9"` i would have removed the cookies from it but it's required . the problem was additional space in the forth step that resulted in a wrong hashed 'password+challange'
