+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 Ange Albertini, International Journal of Proof-of-Concept or Get The Fuck Out and Julia Wolf that explain how we can build a polyglot file.
+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.
+My main motivation was the technical challenge.
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Features and changelog
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Description
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Version
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Build a polyglot file valid as PDF and ZIP format and that can be opened with 7Zip and Windows Explorer
+
POC
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Add a stream object in PDF part
+
POC
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+
Polyglot file checked without warning with pdftocairo
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>= 1.0
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Polyglot file checked without warning with caradoc
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>= 1.0
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Rebuild PDF Xref Table
+
>= 1.0
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+
Stream object with correct length header value
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>= 1.0
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Format "zippdf", file without offset after Zip data
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>= 1.1
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Polyglot file keep original PDF version
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>= 1.1.1
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Add "szippdf" format without offset before and after Zip data
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>= 1.2
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Fix /Length stream object value and PDF offset for szippdf format
+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.
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+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: debug)
+
+TruePolyglot v1.3
+