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15334

X86 Register Encoding

If you've ever look at the disassembly output for C or C++ code, you'll probably notice that there are a lot of push/pop instructions. And if you pay close enough attention, you'll notice that the compiler prefers to use certain registers over others. In particular, compilers will prefer pushing "old" registers like…

15349

Parsing JSON is a Minefield

[2016-10-26] First version of the article [2016-10-28] Presentation at Soft-Shake Conference, Geneva ( slides ) [2016-11-01] Article and comments in The Register [2017-11-16] Presentation at Black Alps Security Conference, Yverdon ( slides ) [2018-03-09] Presentation at Toulouse Hacking Conference ( slides )…

15355

Having fun abusing the C language

I was looking through the book Expert C Programming again when I came upon their “light relief” section on The International Obfuscated C Code Competition . It’s a contest to write the most obscure code. That the language C has a competition where you write confusing code in it probably says something about the…

15356

Concorde

Today marks the 13th anniversary since the last passenger flight from New York arrived in the UK. Every seat was filled, a feat that had become increasingly rare for a plane that was a technological marvel but a commercial flop….