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Ryan

@rewithme.bsky.social

Object File Analyst, Programming Scientist

44 Followers  |  180 Following  |  19 Posts  |  Joined: 05.11.2023  |  2.1151

Latest posts by rewithme.bsky.social on Bluesky

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You've seen the trends in AIxCC: LLMs can hack source, find vulns, and patch them. But what about on binaries without source? Do decompilers close the gap, or is there more to grow?

Come see my talk at DistrctCon where I merge and dissect these two fields: AI Hacking + Decomp.

30.10.2025 16:02 β€” πŸ‘ 5    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
What the hell are we doing? Β· Addison Crump Homepage for Addison Crump

Must-read for fuzzing folks (read: tooling/algorithms/academia) by Addison Crump
addisoncrump.info/research/wha...

26.10.2025 03:16 β€” πŸ‘ 29    πŸ” 10    πŸ’¬ 1    πŸ“Œ 1
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GitHub - emproof-com/workshop_firmware_reverse_engineering: Workshop on firmware reverse engineering Workshop on firmware reverse engineering. Contribute to emproof-com/workshop_firmware_reverse_engineering development by creating an account on GitHub.

We at @emproofsecurity.bsky.social open-sourced a free firmware reverse engineering workshop for self-study.

Topics: ELF analysis, cracking, malware triage, embedded-Linux, bare-metal, crypto-key extraction, anti-analysis. Docker setup and solutions included.

github.com/emproof-com/...

30.09.2025 08:36 β€” πŸ‘ 5    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
Screenshot of the blog post intro:

Permissive vs Copyleft Open Source
Published on Jul 9, 2025.
The premise of copyleft licenses is attractive: Create more open source!

With permissive licenses, someone can take the code and make proprietary modifications to it and sell it to other people without releasing the modifications. We want people to publish their improvements, right?

With copyleft, we can force people to publish their improvements to copyleft code. Businesses will want to use our code because creating it was so much work in the first place. We need copyleft if we want more contributors, more open source, more code re-use, more freedom.

Right?

Wrong.

In this post, I break down all the ways copyleft licenses fail to achieve their stated goals, and explain why permissive licenses succeed where copyleft fails.

Screenshot of the blog post intro: Permissive vs Copyleft Open Source Published on Jul 9, 2025. The premise of copyleft licenses is attractive: Create more open source! With permissive licenses, someone can take the code and make proprietary modifications to it and sell it to other people without releasing the modifications. We want people to publish their improvements, right? With copyleft, we can force people to publish their improvements to copyleft code. Businesses will want to use our code because creating it was so much work in the first place. We need copyleft if we want more contributors, more open source, more code re-use, more freedom. Right? Wrong. In this post, I break down all the ways copyleft licenses fail to achieve their stated goals, and explain why permissive licenses succeed where copyleft fails.

I wrote a comprehensive post dispelling many incorrect assumptions about Copyleft vs Permissive open source licenses.

If you author/contribute to open source code, it's worth reading and understanding these nuances!

shazow.net/posts/permis...

15.07.2025 17:36 β€” πŸ‘ 69    πŸ” 17    πŸ’¬ 3    πŸ“Œ 3
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LIEF patchelf This blog post introduces a modern LIEF-based version of patchelf

New blog post on implementing patchelf-like functionalities using LIEF's Rust bindings:

lief.re/blog/2025-07...

14.07.2025 05:09 β€” πŸ‘ 3    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
XBlock Summer 2024 Update Howdy! I figure it's probably not the worst idea to do a quick update on XBlock progress, as well as give some indication what I'm planning to do in the future with it. This will be more roadmap-y tha...

Cool blog of how @aendra.com built @xblock.aendra.dev her automoderation tuned screenshot classifier AI model and pipeline, including all the manual work behind it.
www.aendra.com/xblock-summe...

09.07.2025 00:48 β€” πŸ‘ 24    πŸ” 6    πŸ’¬ 1    πŸ“Œ 0
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It was great to see the community come together again at our 4th #FUZZING workshop in Trondheim this year! We drew a big crowd. Enjoyed the super lively discussions.

Thanks to the organizers:
* @rohan.padhye.org
* @yannicnoller.bsky.social
* @ruijiemeng.bsky.social and
* LΓ‘szlΓ³ Szekeres (Google)

29.06.2025 07:25 β€” πŸ‘ 21    πŸ” 3    πŸ’¬ 2    πŸ“Œ 0

🚨 Our amazing #FUZZING'25 keynotes are online!

"Constraining Fuzzing without Paying Too Much" by Miryung Kim
youtu.be/L90MBb6NLBE

"Are you sure you belong in academia?" by Will Wilson
youtu.be/qQGuQ_4V6WI

// @mboehme.bsky.social, LΓ‘szlΓ³ Szekeres, @rohan.padhye.org, @ruijiemeng.bsky.social

29.06.2025 07:35 β€” πŸ‘ 11    πŸ” 6    πŸ’¬ 1    πŸ“Œ 0
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srcML Dockerfile srcML Dockerfile. GitHub Gist: instantly share code, notes, and snippets.

srcML Dockerfile... gist.github.com/edmcman/edff...

11.06.2025 22:47 β€” πŸ‘ 0    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Nova 6.7b - a Hugging Face Space by ejschwartz This application converts assembly code into C source code. Users need to input assembly code and specify the optimization type. The result is the corresponding C source code.

HF space for the Nova neural decompiler: huggingface.co/spaces/ejsch...

29.05.2025 13:12 β€” πŸ‘ 0    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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A walk down the learning curve A walk down the learning curve (and memory lane) Thomas Dullien (β€œHalvar Flake”) Computing Mathematician

A small slide deck for a 15 minute impulse talk at Cycon 2025 in Talinn: docs.google.com/presentation...

28.05.2025 14:43 β€” πŸ‘ 23    πŸ” 9    πŸ’¬ 1    πŸ“Œ 3
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DWARF as a Shared Reverse Engineering Format This blog post introduces a new API in LIEF to create DWARF files

[Blog Post] New high-level API in LIEF that allows the
creation of DWARF files. Additionally, I present two plugins designed to export
program information from Ghidra and BinaryNinja into a DWARF file.

lief.re/blog/2025-05...

(Bonus: DWARF file detailing my reverse engineering work on DroidGuard)

27.05.2025 13:50 β€” πŸ‘ 21    πŸ” 15    πŸ’¬ 1    πŸ“Œ 0
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Self-nomination for the Artifact Evaluation Committee of NDSS 2026 We are looking for members of the Artifact Evaluation Committee (AEC) of NDSS 2026. The Network and Distributed System Security symposium adopts an Artifact Evaluation (AE) process allowing authors t...

All papers should publish their code. Help realize this by becoming an artifact reviewer at NDSS'26, apply here: docs.google.com/forms/d/e/1F...

You'll review artifacts of accepted papers. We especially encourage junior/senior PhD students & PostDocs to help. Distinguished reviews will get awards!

25.05.2025 13:25 β€” πŸ‘ 12    πŸ” 10    πŸ’¬ 0    πŸ“Œ 1
How I used o3 to find CVE-2025-37899, a remote zeroday vulnerability in the Linux kernel’s SMB implementation Sean Heelan: > The vulnerability [o3] found is CVE-2025-37899 (fix [here](https://github.com/torvalds/linux/commit/2fc9feff45d92a92cd5f96487655d5be23fb7e2b)), a use-after-free in the handler for the S...

Excited to see my LLM CLI tool used by Sean Heelan to help identify a remote zeroday vulnerability in the Linux kernel!
simonwillison.net/2025/May/24/...

24.05.2025 23:42 β€” πŸ‘ 117    πŸ” 21    πŸ’¬ 3    πŸ“Œ 2
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GitHub - non-ai-licenses/non-ai-licenses: This repository contains software licenses that restrict software from being used in AI training datasets or AI technologies. This repository contains software licenses that restrict software from being used in AI training datasets or AI technologies. - non-ai-licenses/non-ai-licenses

github.com/non-ai-licen...

23.05.2025 13:10 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Artisinal software

There is LLM free licenses though I think

23.05.2025 13:09 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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GitHub - binarly-io/idalib: Idiomatic Rust bindings for the IDA SDK, enabling the development of standalone analysis tools using IDA v9.x’s idalib Idiomatic Rust bindings for the IDA SDK, enabling the development of standalone analysis tools using IDA v9.x’s idalib - binarly-io/idalib

We're are happy to announce a new release of our #Rust bindings for idalib.

What's new:
- New APIs for working with IDBs, segments, and more
- Rust 2024 support
- New homepage: idalib.rs

H/T to our contributors @yeggor.bsky.social & @raptor.infosec.exchange.ap.brid.gy

github.com/binarly-io/i...

21.05.2025 22:28 β€” πŸ‘ 5    πŸ” 9    πŸ’¬ 0    πŸ“Œ 0
A mini symbolic execution engine It has been a while since I blogged last time. One change is that I started to have nightmares about me forgetting to prepare for lecture, rather than forgetting to turn in homework as in the past 20(...

this is still the Best Post about symbolic execution. it uses some cursed python to make a tiny but illustrative symbolic execution engine

kqueue.org/blog/2015/05...

03.05.2025 17:44 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

🚨 Blog Post: "Re-compiling Decompiler Output" https://edmcman.github.io/blog/2025-05-02--re-compiling-ghidra-decompiler-output/

03.05.2025 14:54 β€” πŸ‘ 1    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
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Review Criteria for Technical (TP) and Experience Papers (EP) @ #ASE25.

* In TP, PC evaluates the significance of the problem, the novelty of the approach and the soundness of the eval.
* In EP, PC evaluates the practical importance + the description of scope, insights, and perspective.

Details:

03.05.2025 14:25 β€” πŸ‘ 0    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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Policy on LLM-assisted Reviews @ #ASE25

03.05.2025 14:28 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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✨️ Now that #ICSE25 is over, it's time to get your papers ready for #ASE25 (30th May)!

πŸ“’ Here is what's new:
* Major Revision v2.0
* Review criteria for tech. & experience papers
* Policy on LLM-assisted Reviews
* Auto-bidding (TPMS)
* Rapid Response Reliable Reviewers

πŸ‘‡ For more details, read on.

03.05.2025 14:25 β€” πŸ‘ 26    πŸ” 14    πŸ’¬ 1    πŸ“Œ 0
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Major Revision 2.0 @ #ASE25.

Objective:
* Reviewer continuity > recycling.
* Reduce PC workload.
* Minimize ambiguity.
* Avoid deferred rejects.

tl;dr:
* MR = reviewers commit to accepting the MR if it addresses the revision items *irrespective* of any new results.
* Only DL is required to check.

03.05.2025 14:25 β€” πŸ‘ 0    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0

It was opt 175b chronicle

16.04.2025 23:01 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Around 2023 some company published their raw experience trying to train a very large model, like a text file with all the errors they hit, was that google or Facebook or some other company?

16.04.2025 22:26 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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more exciting stuff coming to libAFL @aflplusplus.bsky.social , including a binary-only ASan implementation in Rust for QEMU and integration with the unicorn emulator!

reminds me of how @dmnk.bsky.social and I got the unicornafl rust bindings up and running to fuzz some basebands 5 years ago

10.04.2025 14:57 β€” πŸ‘ 9    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0

Oh wow. This just in from a CISA spokesperson:

β€œThe CVE Program is invaluable to cyber community and a priority of CISA. Last night, CISA executed the option period on the contract to ensure there will be no lapse in critical CVE services. We appreciate our partners’ and stakeholders’ patience.”

16.04.2025 11:44 β€” πŸ‘ 379    πŸ” 115    πŸ’¬ 8    πŸ“Œ 17

Time zone code is 100% the kinda code you make someone else do, like a library

I feel like that is more off limits to home roll than crypto even

15.04.2025 14:18 β€” πŸ‘ 13    πŸ” 3    πŸ’¬ 2    πŸ“Œ 0
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And AZ CTF comes to a close! Congrats to the winners! And, of course, everyone can now tackle the chals on #pwncollege at: pwn.college/az-ctf-2...

06.04.2025 00:07 β€” πŸ‘ 1    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
Zardus: "Today is @defcon Quals... and for the first time …" - DEF CON Social Today is @defcon Quals... and for the first time in 15 years, I am not involved in any capacity! After 9 years playing, 4 years hosting, and 2 years playing again, this weekend is going to be a family event rather than a caffeine-fueled hacking extravaganza... Complex emotions!

Today, I participated in @DEFCON Quals #CTF with @Shellphish! After missing last year's quals due to family traditions (defcon.social/@Zardu...), it was great to be back! We got 5th place and (unless our calculations are off) are heading to finals!

14.04.2025 08:50 β€” πŸ‘ 6    πŸ” 1    πŸ’¬ 2    πŸ“Œ 0

@rewithme is following 20 prominent accounts