Reversing ‘Grateful Dead: D2S2’ on Mac (2022)
The article discusses a tutorial on reversing the algorithm for the software 'Grateful Dead: D2S2'. It outlines the tools and methods needed to bypass the authentication process and generate a valid serial number. The tutorial emphasizes the importance of understanding the application architecture and using debugging tools effectively.
- ▪The project focuses on reversing the algorithm of 'Grateful Dead: D2S2'.
- ▪Tools like MacsBug and Resorcerer are used for debugging and editing binary data.
- ▪The tutorial provides a strategy for breaking into the debugger at the right moment during the serial number validation process.
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| Original publisher | Os9 |
| Canonical URL | https://blog.os9.ca/2022/04/21/001-reversing-grateful-dead-d2s2/ |
| Publication time | Sun, 17 May 2026 20:46:23 -0500 |
| Retrieval time | 2026-05-18T02:03:21.278Z |
| Last seen | 2026-05-18T02:03:21.278Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | ZT7jjpagRbst |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
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| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
001: Reversing ‘Grateful Dead: D2S2’ 2022.04.21 by siddhartha77 | Tutorials Introduction Tools Investigation Strategy The Toolbox Setting A Toolbox Breakpoint Deeper into MacsBug A Quick Crack The Algorithm Conclusion Introduction In this project, we will be looking at an easy algorithm to reverse in Grateful Dead: D2S2. I will also be going over some basic setup since this is the first in my tutorial series. At the end of this project, you will be able to identify a 68k vs PPC application, set a Toolbox breakpoint, manually bypass the authentication algorithm, and then fully reverse the algorithm to generate a valid serial number. A passing familiarity with 68k assembly will help, but it’s not necessary. Tools We will be using MacsBug 6.6.3 and Resorcerer 1.2.5.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Os9.
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