Excited to conduct my 5th guest lecture at George Mason University on February 14th 6pm where we have another juicy #Embedded #CTF where they are given the firmware in .uf2 format and will need to #ReverseEngineer the binary and figure out a way to attack its wireless access point. This is part of a larger #DEFCON #DC540 Chapter CTF series. Link below with the story and the binary! Hope to see you there! #ReverseEngineering https://github.com/mytechnotalent/dc540-0x00008

Tomorrow in our next episode of #GhidraBytes, we will dig into DAT_code_0043 and see what value exists at the value going into t hat function which is 0x9d! We will need to understanding our hex to binary conversion to make sense of how to #ReverseEngineer this in #Ghidra!

#GhidraBytes 0x01: Blinky - We begin with the simple #CPP blinky program to which we will #ReverseEngineer each piece step-by-step in #Ghidra! Read the code and get familiar with the basics.

Fan Made Dreamcast Port of GTA 3 Steals The Show - As it turns out, Sega’s long defunct Dreamcast console is still thinking. The comp... - https://hackaday.com/2024/12/30/fan-made-dreamcast-port-of-gta-3-steals-the-show/ #reverseengineer #segadreamcast #videogames #games #sega #gta

How important is it for kids to learn #Python in 2025? With the explosion of #AgenticAI the abstractions will widen as the complexity of the #RAG and #Transformerarchiture grows. We need a generation that can successfully #ReverseEngineer these models when they begin to wreak havoc. https://youtu.be/b4V13Lvk_jM?feature=shared

I’d love to try and #ReverseEngineer the Yoto Mini (https://uk.yotoplay.com/yoto-mini) — if anyone has/has access to a broken one, I’d love to buy it off you

After I got frustrated with the layout of my code, I took another crack at transcribing the open source portion of the project that's inspiring me. I came much further along in understanding the logic, all except for how they calculate what the top end of the progress bar should be. Their method was so off the wall and I plugged in a few test values to find out that it basically doesn't even work. So I came up with my own methodology and it turns out I almost perfectly nailed the way Excel calculates the maximum of an axis for a graph. I have yet to decide whether or not to be insulted by this. #cplusplus #arduino #reverseEngineer

Michael Karcher (#OSINT #ReverseEngineer) about #xz #backdoor #obfuscating #regex:

"the code does not contain any ASCII strings, neither in clear text nor in obfuscated form. Instead, it recognizes all relevant strings using one single deterministic finite automaton..." (DFA ~= regex)

"... script that decodes the tables for the table-driven DFA and outputs the strings recognized by it accompanied with the "ID" assigned to the terminal accepting state"
https://github.com/karcherm/xz-malware

Next Friday at #gmu #georgemasonuniversity I will present my 3rd guest lecture where we will #reverseengineer a real-world scenario which is an #OT #IT #hack on the #powergrid. We will use #ghidra and #reverse a stripped binary and undo a #vuln in #bonded and #encrypted #bluetooth #ble #bluetoothlowenergy. #reverseengineering

In a message to Eric Migicovsky (CEO of Beeper, a 3rd party iMessage service), a 16 year old developer claimed that he reverse engineered Apple iMessage.

Astounded by the claim, the Beeper team looked into the claim & his prototype to find that it actually worked. They were able to register the Android device as if it's an iPhone and was able to send/receive messages as if nothing is amiss.

After months of work, Beeper is now releasing the Beeper Mini app which allows an Android device directly send/receive iMessage with Apple's servers without the use of relay servers. At launch, the app will cost US$2/month.

While something like this is a novelty outside of the US. For a market like the US while iMessage dominates, this can be a game changer (assuming it doesn't get legally shut down by Apple).

For more: www.theverge.com/2023/12/5/23987817/beeper-mini-imessage-android-reverse-engineer

#iMessage #ReverseEngineer #Android #Beeper #Messaging #MessageApps

Why #Rust is such an issue to #ReverseEngineer?

fn main() {
let tup = (1337, 3.14, 42);
let (x, y, z) = tup;
println!("x: {x}");
println!("y: {y}");
println!("z: {z}");

let x = [1, 2, 3];
let one = x[0];
let two = x[1];
let three = x[2];
println!("one: {one}");
println!("two: {two}");
println!("three: {three}");
}

This simple program's Assembler results in the following screenshots.

** UPDATE **

I've taken this down for now. I'm looking into whether I need to do responsible disclosure. If you're an expert in this area, please reach out. Thanks!

#responsibleDisclosure

** Original post **

I published part 7 of my bike blog. This one is pretty cool, in my opinion. I discover that the access controls that ASI implemented in their electronic speed controls are easily bypassed with a brute-force attack. I also philosophize a bit about the implications of that.

https://housedillon.com/blog/flash-part-seven/