Initial commit

README.md

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+Strike Suit Zero Savegame Decoder
+=================================
+

mainsav_decode.php

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+#!/usr/bin/php
+<?php
+
+// can be found in ~/.local/share/Steam/userdata/119879364/209540/remote
+$file = 'main.sav';
+
+$data = file_get_contents($file);
+
+$key = 'tkileyismoarawesome!!!!citationneede';
+
+$header = substr($data, 0, 40);
+$crypt  = substr($data, 40);
+
+file_put_contents('main_header.sav', $header);
+
+$version = substr($header, 32, 4);
+$version_num = unpack('L', $version);
+echo 'Version: ' . $version_num[1] . PHP_EOL;
+
+$length = substr($header, 36, 4);
+$length_num = unpack('L', $length);
+echo 'Payload length: ' . $length_num[1] . ' Bytes' . PHP_EOL;
+
+$output = '';
+for ($i=0; $i<strlen($crypt); $i++) {
+    $keyidx = $i % strlen($key);
+
+    $keychar = substr($key, $keyidx, 1);
+    $char = substr($crypt, $i, 1);
+
+    $newchar = ord($char) ^ ord($keychar);
+
+    $output .= chr($newchar);
+}
+
+#file_put_contents('main_data.sav', $output);
+
+$json = json_decode($output);
+$pretty = json_encode($json, JSON_PRETTY_PRINT);
+
+file_put_contents('main_data.sav', $pretty);

mainsav_decode.py

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+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import struct
+import json
+
+# can be found in ~/.local/share/Steam/userdata/119879364/209540/remote
+filename = "main.sav"
+key = bytearray("tkileyismoarawesome!!!!citationneede", "utf-8")
+
+data = bytearray(open(filename, "rb").read())
+
+header = data[0:40]
+crypt  = data[40:]
+
+f = open("main_header.sav", "wb")
+f.write(header)
+f.close()
+
+version = header[32:36]
+version_num = struct.unpack("<L", version)
+print("Version: %s" % version_num[0])
+
+length = header[36:40]
+length_num = struct.unpack("<L", length)
+print("Payload length: %s Bytes" % length_num[0])
+
+output = bytearray()
+for i in range(0, len(crypt)):
+    keyidx = i % len(key)
+
+    keychar = key[keyidx]
+    char    = crypt[i]
+
+    newchar = char ^ keychar
+
+    output.append(newchar)
+
+f = open("main_data.sav", "wb")
+f.write(output)
+f.close()
+
+json_data = json.loads(str(output, "utf-8"))
+
+json_pretty = json.dumps(json_data, indent=4)
+
+f = open("main_data.sav", "w")
+f.write(json_pretty)
+f.close()

mainsav_encode.php

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+#!/usr/bin/php
+<?php
+
+$key = 'tkileyismoarawesome!!!!citationneede';
+
+$header = file_get_contents('main_header.sav');
+$data   = file_get_contents('main_data.sav');
+
+$json = json_decode($data);
+$crypt = json_encode($json);
+
+$header = substr($header, 0, 36);
+$header .= pack('L', strlen($crypt));
+
+
+$version = substr($header, 32, 4);
+$version_num = unpack('L', $version);
+echo 'Version: ' . $version_num[1] . PHP_EOL;
+
+$length = substr($header, 36, 4);
+$length_num = unpack('L', $length);
+echo 'Payload length: ' . $length_num[1] . ' Bytes' . PHP_EOL;
+
+
+$output = $header;
+for ($i=0; $i<strlen($crypt); $i++) {
+    $keyidx = $i % strlen($key);
+
+    $keychar = substr($key, $keyidx, 1);
+    $char = substr($crypt, $i, 1);
+
+    $newchar = ord($char) ^ ord($keychar);
+
+    $output .= chr($newchar);
+}
+
+file_put_contents('main_new.sav', $output);
+// goes to: ~/.local/share/Steam/userdata/119879364/209540/remote