ghidra
digraph
ghidra | digraph | |
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4 | 6 | |
5 | 48 | |
- | - | |
7.5 | 9.2 | |
7 months ago | about 2 months ago | |
Java | Rust | |
Apache License 2.0 | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
ghidra
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Show HN: A Ghidra extension that turns programs back into object files
[1] https://github.com/boricj/ghidra/tree/feature/elfrelocatebleobjectexporter
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Ask HN: Tell us about your project that's not done yet but you want feedback on
I've been working on a specific reverse-engineering technique called _unlinking_ [1] on-and-off for the past 16 months or so. I'm on my third prototype (first a set of Ghidra scripts written in Jython [2], then a fork of Ghidra [3] and now a Ghidra extension [4]) and I've started a blog in order to document it [5], which side-tracked into writing a whole series of articles on reverse-engineering to introduce the topic.
What for, you may ask? Basically I'm trying to decompile a PlayStation 1 video game and I've quickly decided that dealing alone with multiple +500 KiB executables of complete utter spaghetti code wasn't going to work. Instead, I've decided that I'd rather divide-and-conquer the problem, so I've been tooling up to split executables into relocatable object files, in order to decompile those one at a time and _Ship of Theseus_-style my way to success.
Ironically, all of that stuff is so not done that I don't even know what meaningful feedback there could be. My prototypes do work, but only for 32 bit little endian statically-linked MIPS executables. The articles on my blog are draft-quality. As for the decompilation project itself that started all of this, it hasn't seen much progress due to all of those side-quests. The overall topic is so esoteric that so far I've only managed to hear about one group of two persons that tried to do anything remotely similar and one another anecdotal account [6] that this particular skill is very uncommon among reverse engineers.
Personally, I'm starting to think that maybe I could've actually reverse-engineered and decompiled the game in the time I took to get here. I've also tried to engage with Ghidra to upstream the foundations of my modifications in my fork, but after some back-and-forth it became clear that my prototype-grade stuff wasn't industrial-grade and couldn't be merged in its current state, which is why I'm currently reworking the code in my fork as a Ghidra extension.
To those that want to provide feedback after reading all of this: beware, I've had a lot of fun going down that rabbit hole, but this is one hell of a time sink _and_ a particularly tricky mind-bender.
[1] I don't actually _know_ what's the actual name for this technique, given that there are so few resources on it out there. I do know I didn't invent it.
[2] https://github.com/boricj/ghidra-unlinker-scripts
[3] https://github.com/boricj/ghidra/tree/feature/elfrelocateble...
[4] https://github.com/boricj/ghidra-unlinker-extension
[5] https://news.ycombinator.com/item?id=36575081#36590078
[6] https://news.ycombinator.com/item?id=35729232&p=3#35740761
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Ask HN: Most interesting tech you built for just yourself?
- The relocation synthesizer for MIPS: https://github.com/boricj/ghidra/blob/feature/elfrelocateble...
- The Ghidra analyzer that leverages this synthesizer: https://github.com/boricj/ghidra/blob/feature/elfrelocatebleobjectexporter/Ghidra/Features/Delinker/src/main/java/ghidra/app/analyzers/RelocationTableSynthesizerAnalyzer.java
digraph
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Ask HN: Most interesting tech you built for just yourself?
My own purpose in using it is to be able to get back to any link that I've read or have potentially wanted to read at a later point in time.
You scan see screenshots here: https://github.com/emwalker/digraph.
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My Bad Habit of Hoarding Information
I have the same habit and wrote a web app to catalog the links I come across:
https://digraph.app/
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Google Search Is Dying
This was kind of the idea behind a side project I started a few years ago:
https://digraph.app/
https://blog.digraph.app/2020-06-13-democratization-of-searc...
I definitely think crowd-sourcing and a well-conceived reputation management system that can influence results are good next areas for exploration.
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Paul Graham's Twitter thread on Search engines and SEO spam
> I think building search vertical that are hand-curated would be very interesting to see.
That was my inspiration behind a side project I made a few years ago — a decentralized, hand curated "search engine" [0]. Never got beyond the side project stage. But I see promise in this in the future. Eventually we'll figure out that human and moderated curation is better than the best machine learning.
[0] https://github.com/emwalker/digraph
What are some alternatives?
depsdev - CLI client (and Golang module) for deps.dev API. Free access to dependencies, licenses, advisories, and other critical health and security signals for open source package versions.
endoflife.date - Informative site with EoL dates of everything
Pinout.xyz - Source files for the Raspberry Pi Pinout documentation website.
FordACP-AUX - Ford CD changer emulator with AUX playback control using Arduino UNO
SaunaControl - Makes a Sauna think it's a web server.
uBlock-Origin-dev-filter - Filters to block and remove copycat-websites from DuckDuckGo, Google and other search engines. Specific to dev websites like StackOverflow or GitHub.
dizquetv - Create live TV channels from your own media. Access the streams using the simulated HDHomerun tuner or the generated M3U URl.
loda-identify-similar-programs - Measure how similar LODA programs are
ratarmount - Access large archives as a filesystem efficiently, e.g., TAR, RAR, ZIP, GZ, BZ2, XZ, ZSTD archives
adm-zip - A Javascript implementation of zip for nodejs. Allows user to create or extract zip files both in memory or to/from disk
cardboard - 💽 Cloud storage + management platform for analog video files
notebooks - Just various notebooks I sometimes write to help me, no unifying theme