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<!doctype html>
<html lang="fr">
<head>
<meta charset="utf-8">
<title>TruePolyglot</title>
<meta name="description" content="TruePolyglot project website">
<meta name="author" content="hackade">
<link rel="stylesheet" href="css/styles.css">
<link rel="shortcut icon" href="/favicon.ico">
</head>
<body>
<h1>TruePolyglot</h1>
Truepolyglot is polyglot file generator project.
This means that the generated file is composed of several file formats. The same file can be opened as a ZIP file and as a PDF file for example.
The idea of this project comes from work of <a href="https://github.com/corkami">Ange Albertini</a>, <a href="https://www.alchemistowl.org/pocorgtfo/pocorgtfo07.pdf">International Journal of Proof-of-Concept or Get The Fuck Out</a> and <a href="https://www.troopers.de/wp-content/uploads/2011/04/TR11_Wolf_OMG_PDF.pdf">Julia Wolf</a> that explain how we can build a polyglot file.<br>
Polyglot file can be fastidious to build, even more if you want to respect correctly file format. That's why I decided to build a tool to generate them.<br>
My main motivation was the technical challenge.
<br>
<h2>Features and changelog</h2>
<div class="font_reduce">
<table>
<tr>
<th>Description</th>
<th>Version</th>
</tr>
<tr>
<td>Build a polyglot file valid as PDF and ZIP format and that can be opened with 7Zip and Windows Explorer</td>
<td>POC</td>
</tr>
<tr>
<td>Add a stream object in PDF part</td>
<td>POC</td>
</tr>
<tr>
<td>Polyglot file checked without warning with <a href="https://poppler.freedesktop.org/">pdftocairo</a></td>
<td> >= 1.0</td>
</tr>
<tr>
<td>Polyglot file checked without warning with <a href="https://github.com/ANSSI-FR/caradoc">caradoc</a></td>
<td> >= 1.0</td>
</tr>
<tr>
<td>Rebuild PDF Xref Table</td>
<td>>= 1.0</td>
</tr>
<tr>
<td>Stream object with correct length header value</td>
<td>>= 1.0</td>
</tr>
<tr>
<td>Format "zippdf", file without offset after Zip data</td>
<td>>= 1.1</td>
</tr>
<tr>
<td>Polyglot file keep original PDF version</td>
<td>>= 1.1.1</td>
</tr>
<tr>
<td>Add "szippdf" format without offset before and after Zip data</td>
<td>>= 1.2</td>
</tr>
<tr>
<td>Fix /Length stream object value and PDF offset for szippdf format</td>
<td>>= 1.2.1</td>
</tr>
<tr>
<td>PDF object numbers reorder after insertion</td>
<td>>= 1.3</td>
</tr>
</table>
</div>
<h2>Polyglot file compatibility</h2>
<div class="font_reduce">
<table>
<tr>
<th>Software</th>
<th>Formats</th>
<th>status</th>
</tr>
<tr>
<td>Acrobat Reader</td>
<td>pdfzip, zippdf</td>
<td>OK</td>
</tr>
<tr>
<td>Acrobat Reader</td>
<td>szippdf</td>
<td><span class="warning">KO</span></td>
</tr>
<tr>
<td>Sumatra PDF</td>
<td>pdfzip, zippdf, szippdf</td>
<td>OK</td>
</tr>
<tr>
<td>Edge</td>
<td>pdfzip, zippdf, szippdf</td>
<td>OK</td>
</tr>
<tr>
<td>Firefox</td>
<td>pdfzip, zippdf, szippdf</td>
<td>OK</td>
</tr>
<tr>
<td>7zip</td>
<td>pdfzip, zippdf</td>
<td><span class="warning">OK with warning</span></td>
</tr>
<tr>
<td>7zip</td>
<td>szippdf</td>
<td>OK</td>
</tr>
<tr>
<td>Explorer Windows</td>
<td>pdfzip, zippdf, szippdf</td>
<td>OK</td>
</tr>
<tr>
<td>Info-ZIP (unzip)</td>
<td>pdfzip, zippdf, szippdf</td>
<td>OK</td>
</tr>
<tr>
<td>Evince</td>
<td>pdfzip, zippdf, szippdf</td>
<td>OK</td>
</tr>
<tr>
<td>pdftocairo -pdf</td>
<td>pdfzip, zippdf, szippdf</td>
<td>OK</td>
</tr>
<tr>
<td>caradoc stats</td>
<td>pdfzip</td>
<td>OK</td>
</tr>
<tr>
<td>java</td>
<td>szippdf</td>
<td>OK</td>
</tr>
</table>
</div>
<h2>Examples</h2>
<ul>
<li><a href="/samples/">Polyglot files repository</a></li>
</ul>
<div class="font_reduce">
<table>
<tr>
<th>PDF input file</th>
<th>Zip input file</th>
<th>Format</th>
<th>Polyglot</th>
<th>Comment</th>
</tr>
<tr>
<td><a href="/samples/pdfzip/poc1/doc.pdf">doc.pdf</a></td>
<td><a href="/samples/pdfzip/poc1/archive.zip">archive.zip</a></td>
<td>pdfzip</td>
<td><a href="/samples/pdfzip/poc1/polyglot.pdf">polyglot.pdf</a></td>
<td>PDF/ZIP polyglot - 122 Ko</td>
</tr>
<tr>
<td><a href="/samples/pdfzip/poc2/orwell_1984.pdf">orwell_1984.pdf</a></td>
<td><a href="/samples/pdfzip/poc2/file-FILE5_32.zip">file-FILE5_32.zip</a></td>
<td>pdfzip</td>
<td><a href="/samples/pdfzip/poc2/polyglot.pdf">polyglot.pdf</a></td>
<td>PDF/ZIP polyglot - 1.3 Mo</td>
</tr>
<tr>
<td><a href="/samples/pdfzip/poc3/x86asm.pdf">x86asm.pdf</a></td>
<td><a href="/samples/pdfzip/poc3/fasmw17304.zip">fasmw17304.zip</a></td>
<td>pdfzip</td>
<td><a href="/samples/pdfzip/poc3/polyglot.pdf">polyglot.pdf</a></td>
<td>PDF/ZIP polyglot - 1.8 Mo</td>
</tr>
<tr>
<td><a href="/samples/zippdf/poc4/doc.pdf">doc.pdf</a></td>
<td><a href="/samples/zippdf/poc4/archive.zip">archive.zip</a></td>
<td>zippdf</td>
<td><a href="/samples/zippdf/poc4/polyglot.pdf">polyglot.pdf</a></td>
<td>PDF/ZIP polyglot - 112 Ko</td>
</tr>
<tr>
<td><a href="/samples/szippdf/poc5/electronics.pdf">electronics.pdf</a></td>
<td><a href="/samples/szippdf/poc5/hello_world.jar">hello_world.jar</a></td>
<td>szippdf</td>
<td><a href="/samples/szippdf/poc5/polyglot.pdf">polyglot.pdf</a></td>
<td>PDF/JAR polyglot - 778 Ko</td>
</tr>
<tr>
<td><a href="/samples/pdfzip/poc6/hexinator.pdf">hexinator.pdf</a></td>
<td><a href="/samples/pdfzip/poc6/eicar.zip">eicar.zip</a> (<a href="https://www.virustotal.com/#/file/2174e17e6b03bb398666c128e6ab0a27d4ad6f7d7922127fe828e07aa94ab79d/detection">scan virustotal.com</a>)</td>
<td>pdfzip</td>
<td><a href="/samples/pdfzip/poc6/polyglot.pdf">polyglot.pdf</a> (<a href="https://www.virustotal.com/#/file/f6fef31e3b03164bb3bdf35af0521f9fc0c518a9e0f1aa9f8b60ac936201591a/detection">scan virustotal.com</a>)</td>
<td>PDF/ZIP polyglot with Eicar test in Zip - 2.9 Mo</td>
</tr>
</table>
</div>
<h2>Manual</h2>
<pre>
usage: truepolyglot format [options] output-file
Generate a polyglot file.
Formats availables:
* pdfzip: Generate a file valid as PDF and ZIP. The format is closest to PDF.
* zippdf: Generate a file valid as ZIP and PDF. The format is closest to ZIP.
* szippdf: Generate a file valid as ZIP and PDF. The format is strictly a ZIP. Archive is modified.
positional arguments:
{pdfzip,zippdf,szippdf}
Output polyglot format
output_file Output polyglot file path
optional arguments:
-h, --help show this help message and exit
--pdffile PDFFILE PDF input file
--zipfile ZIPFILE ZIP input file
--verbose {none,error,info,debug}
Verbosity level (default: info)
TruePolyglot v1.3
</pre>
<h2>Code</h2>
<pre>
git clone <a href="https://git.hackade.org/truepolyglot.git/">https://git.hackade.org/truepolyglot.git/</a>
</pre>
<h2>Contact</h2>
On <a href="https://webchat.freenode.net/">IRC Freenode</a> my nickname is hackade or by mail at <a href="mailtp:truepolyglot@hackade.org">truepolyglot@hackade.org</a>.
</body>
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