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RCT Classic encryption
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/vendor/ |
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{ | |
"require": { | |
"mdurrant/php-binary-reader": "^1.0", | |
"symfony/var-dumper": "^5.0" | |
} | |
} |
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{ | |
"_readme": [ | |
"This file locks the dependencies of your project to a known state", | |
"Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies", | |
"This file is @generated automatically" | |
], | |
"content-hash": "89a6b4172fa21ba1812ba1840708f8d8", | |
"packages": [ | |
{ | |
"name": "mdurrant/php-binary-reader", | |
"version": "1.0.9", | |
"source": { | |
"type": "git", | |
"url": "https://github.com/mdurrant/php-binary-reader.git", | |
"reference": "9abf18d7b361d0ae1cd80fc6782e59b313586db6" | |
}, | |
"dist": { | |
"type": "zip", | |
"url": "https://api.github.com/repos/mdurrant/php-binary-reader/zipball/9abf18d7b361d0ae1cd80fc6782e59b313586db6", | |
"reference": "9abf18d7b361d0ae1cd80fc6782e59b313586db6", | |
"shasum": "" | |
}, | |
"require": { | |
"php": ">=5.4" | |
}, | |
"require-dev": { | |
"phpunit/phpunit": "~4.0", | |
"squizlabs/php_codesniffer": "~1.0" | |
}, | |
"type": "library", | |
"extra": { | |
"branch-alias": { | |
"dev-master": "1.0.x-dev" | |
} | |
}, | |
"autoload": { | |
"psr-4": { | |
"PhpBinaryReader\\": [ | |
"src/", | |
"test/" | |
] | |
} | |
}, | |
"notification-url": "https://packagist.org/downloads/", | |
"license": [ | |
"MIT" | |
], | |
"authors": [ | |
{ | |
"name": "Matt Durrant", | |
"email": "mdurrant@gmail.com" | |
} | |
], | |
"description": "Lightweight binary reader for PHP", | |
"time": "2016-12-08T01:24:19+00:00" | |
}, | |
{ | |
"name": "symfony/polyfill-mbstring", | |
"version": "v1.15.0", | |
"source": { | |
"type": "git", | |
"url": "https://github.com/symfony/polyfill-mbstring.git", | |
"reference": "81ffd3a9c6d707be22e3012b827de1c9775fc5ac" | |
}, | |
"dist": { | |
"type": "zip", | |
"url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/81ffd3a9c6d707be22e3012b827de1c9775fc5ac", | |
"reference": "81ffd3a9c6d707be22e3012b827de1c9775fc5ac", | |
"shasum": "" | |
}, | |
"require": { | |
"php": ">=5.3.3" | |
}, | |
"suggest": { | |
"ext-mbstring": "For best performance" | |
}, | |
"type": "library", | |
"extra": { | |
"branch-alias": { | |
"dev-master": "1.15-dev" | |
} | |
}, | |
"autoload": { | |
"psr-4": { | |
"Symfony\\Polyfill\\Mbstring\\": "" | |
}, | |
"files": [ | |
"bootstrap.php" | |
] | |
}, | |
"notification-url": "https://packagist.org/downloads/", | |
"license": [ | |
"MIT" | |
], | |
"authors": [ | |
{ | |
"name": "Nicolas Grekas", | |
"email": "p@tchwork.com" | |
}, | |
{ | |
"name": "Symfony Community", | |
"homepage": "https://symfony.com/contributors" | |
} | |
], | |
"description": "Symfony polyfill for the Mbstring extension", | |
"homepage": "https://symfony.com", | |
"keywords": [ | |
"compatibility", | |
"mbstring", | |
"polyfill", | |
"portable", | |
"shim" | |
], | |
"time": "2020-03-09T19:04:49+00:00" | |
}, | |
{ | |
"name": "symfony/var-dumper", | |
"version": "v5.0.8", | |
"source": { | |
"type": "git", | |
"url": "https://github.com/symfony/var-dumper.git", | |
"reference": "09de28632f16f81058a85fcf318397218272a07b" | |
}, | |
"dist": { | |
"type": "zip", | |
"url": "https://api.github.com/repos/symfony/var-dumper/zipball/09de28632f16f81058a85fcf318397218272a07b", | |
"reference": "09de28632f16f81058a85fcf318397218272a07b", | |
"shasum": "" | |
}, | |
"require": { | |
"php": "^7.2.5", | |
"symfony/polyfill-mbstring": "~1.0" | |
}, | |
"conflict": { | |
"phpunit/phpunit": "<5.4.3", | |
"symfony/console": "<4.4" | |
}, | |
"require-dev": { | |
"ext-iconv": "*", | |
"symfony/console": "^4.4|^5.0", | |
"symfony/process": "^4.4|^5.0", | |
"twig/twig": "^2.4|^3.0" | |
}, | |
"suggest": { | |
"ext-iconv": "To convert non-UTF-8 strings to UTF-8 (or symfony/polyfill-iconv in case ext-iconv cannot be used).", | |
"ext-intl": "To show region name in time zone dump", | |
"symfony/console": "To use the ServerDumpCommand and/or the bin/var-dump-server script" | |
}, | |
"bin": [ | |
"Resources/bin/var-dump-server" | |
], | |
"type": "library", | |
"extra": { | |
"branch-alias": { | |
"dev-master": "5.0-dev" | |
} | |
}, | |
"autoload": { | |
"files": [ | |
"Resources/functions/dump.php" | |
], | |
"psr-4": { | |
"Symfony\\Component\\VarDumper\\": "" | |
}, | |
"exclude-from-classmap": [ | |
"/Tests/" | |
] | |
}, | |
"notification-url": "https://packagist.org/downloads/", | |
"license": [ | |
"MIT" | |
], | |
"authors": [ | |
{ | |
"name": "Nicolas Grekas", | |
"email": "p@tchwork.com" | |
}, | |
{ | |
"name": "Symfony Community", | |
"homepage": "https://symfony.com/contributors" | |
} | |
], | |
"description": "Symfony mechanism for exploring and dumping PHP variables", | |
"homepage": "https://symfony.com", | |
"keywords": [ | |
"debug", | |
"dump" | |
], | |
"time": "2020-04-12T16:45:47+00:00" | |
} | |
], | |
"packages-dev": [], | |
"aliases": [], | |
"minimum-stability": "stable", | |
"stability-flags": [], | |
"prefer-stable": false, | |
"prefer-lowest": false, | |
"platform": [], | |
"platform-dev": [] | |
} |
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<?php | |
require 'vendor/autoload.php'; | |
$path = $argv[1]; | |
$file = basename($path); | |
function rol32($value, $steps) | |
{ | |
return (($value << $steps) | ($value >> (32 - $steps))) & 0xFFFFFFFF; | |
} | |
function unapplyMask($mask, \PhpBinaryReader\BinaryReader $br, $size) | |
{ | |
$r10 = strlen($mask); | |
$ecx = 0; // offset into file? | |
$eax = $ecx * 7; | |
$edi = $ecx * 3; | |
$out = ''; | |
for ($i = 0; $i < $size; $i++) { | |
$ecx = $eax % $r10; | |
$edi = $edi % $r10; | |
$eax = ($ecx + 1) % $r10; | |
$dl = $br->readUInt8(); | |
$dl -= ord($mask[$eax]); | |
$dl = u8($dl); | |
$dl = $dl ^ ord($mask[$edi]); | |
$dl = ($dl + ord($mask[$ecx])) & 0xFF; | |
$out .= chr($dl); | |
$edi += 3; | |
$eax = $ecx + 7; | |
} | |
return $out; | |
} | |
/** | |
* @param $dl | |
* @return mixed | |
*/ | |
function u8($dl) | |
{ | |
if ($dl < 0) { | |
$packed = pack('c', $dl); | |
$unpacked = unpack('C', $packed); | |
$dl = $unpacked[1]; | |
} | |
return $dl; | |
} | |
class Memory | |
{ | |
private $var_18; | |
private $var_1C; | |
public function seed($esi, $edx) | |
{ | |
if ($esi == 0) { | |
$this->var_18 = $edx; | |
} else if ($esi === 1) { | |
$this->var_1C = $edx; | |
} | |
} | |
public function randomFillMemory($size) | |
{ | |
$buffer = ''; | |
$r8d = 0xF7654321; | |
$edx = $size; | |
while ($edx > 0) { | |
$ecx = $this->var_1C ^ $r8d; | |
$r10d = $this->var_18; | |
$ecx = rol32($ecx, 25); | |
$ecx = ($ecx + $r10d) & 0xFFFFFFFF; | |
$this->var_18 = $ecx; | |
$r9d = $r10d >> 3; | |
$ecx = rol32($r10d, 29); | |
$this->var_1C = $ecx; | |
$buffer .= chr($r9d & 0xFF); | |
if ($edx < 2) break; | |
$buffer .= chr(($r10d >> 11) & 0xFF); | |
if ($edx < 3) break; | |
$buffer .= chr(($r10d >> 19) & 0xFF); | |
if ($edx < 4) break; | |
$buffer .= chr(($ecx >> 24) & 0xFF); | |
$edx -= 4; | |
} | |
return $buffer; | |
} | |
} | |
$edx = 0; | |
$rev = strrev($file); | |
$rev = str_split($rev, 1); | |
foreach ($rev as $char) { | |
$cl = ord($char); | |
$esi = ($edx << 5) & 0xFFFFFFFF; | |
$edx = (($edx + $esi) & 0xFFFFFFFF) ^ $cl; | |
} | |
$ebx = 0; | |
$fwd = str_split($file, 1); | |
foreach ($fwd as $char) { | |
$cl = ord($char); | |
$ecx = ($ebx << 5) & 0xFFFFFFFF; | |
$ebx = (($ebx + $ecx) & 0xFFFFFFFF) ^ $cl; | |
} | |
$memory = new Memory(); | |
$memory->seed(0, $edx); | |
$memory->seed(1, $ebx); | |
$buffer = $memory->randomFillMemory(0x1000); | |
$brMask = new \PhpBinaryReader\BinaryReader($buffer); | |
$br = new \PhpBinaryReader\BinaryReader(fopen($path, 'rb')); | |
$out = unapplyMask($buffer, $br, $br->getEofPosition() - 4); | |
// Last 4 bytes are a checksum? | |
file_put_contents(basename($path, '.sea') . '.sc6', $out); |
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