# ZIPs tricks

🎙️ HackTricks LIVE Twitch Wednesdays 5.30pm (UTC) 🎙️ - 🎥 Youtube 🎥

* Do you work in a **cybersecurity company**? Do you want to see your **company advertised in HackTricks**? or do you want to have access to the **latest version of the PEASS or download HackTricks in PDF**? Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)! * Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family) * Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com) * **Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/carlospolopm)**.** * **Share your hacking tricks by submitting PRs to the** [**hacktricks repo**](https://github.com/carlospolop/hacktricks) **and** [**hacktricks-cloud repo**](https://github.com/carlospolop/hacktricks-cloud).

There are a handful of command-line tools for zip files that will be useful to know about. * `unzip` will often output helpful information on why a zip will not decompress. * `zipdetails -v` will provide in-depth information on the values present in the various fields of the format. * `zipinfo` lists information about the zip file's contents, without extracting it. * `zip -F input.zip --out output.zip` and `zip -FF input.zip --out output.zip` attempt to repair a corrupted zip file. * [fcrackzip](https://github.com/hyc/fcrackzip) brute-force guesses a zip password (for passwords <7 characters or so). [Zip file format specification](https://pkware.cachefly.net/webdocs/casestudies/APPNOTE.TXT) One important security-related note about password-protected zip files is that they do not encrypt the filenames and original file sizes of the compressed files they contain, unlike password-protected RAR or 7z files. Another note about zip cracking is that if you have an unencrypted/uncompressed copy of any one of the files that are compressed in the encrypted zip, you can perform a "plaintext attack" and crack the zip, as [detailed here](https://www.hackthis.co.uk/articles/known-plaintext-attack-cracking-zip-files), and explained in [this paper](https://www.cs.auckland.ac.nz/~mike/zipattacks.pdf). The newer scheme for password-protecting zip files (with AES-256, rather than "ZipCrypto") does not have this weakness. From: [https://app.gitbook.com/@cpol/s/hacktricks/\~/edit/drafts/-LlM5mCby8ex5pOeV4pJ/forensics/basic-forensics-esp/zips-tricks](https://book.hacktricks.xyz/)

🎙️ HackTricks LIVE Twitch Wednesdays 5.30pm (UTC) 🎙️ - 🎥 Youtube 🎥

--- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://breached.gitbook.io/dashboard/generic-methodologies-and-resources/basic-forensic-methodology/specific-software-file-type-tricks/zips-tricks.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.