LINE CTF 2023がMarch 25, 2023, 09:00 AM ~ March 26, 2023, 09:00 AM (UTC+9)で開催されました。 [web] Baby Simple GoCurl package main import ( "errors" // "fmt" "io/ioutil" "log" "net/http" "os" "strings" "github.com/gin-gonic/gin" ) func redirectChecker(req *http.Request, via []*http.Request) error { reqIp := strings.Split(via[len(via)-1].Host, ":")[0] if len(via) >= 2 || reqIp != "127.0.0.1" { return errors.New("Something wrong") } return nil } func main() { flag := os.Getenv("FLAG")...
