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cpu.land
| | gpfault.net
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| | [AI summary] The provided text is a detailed explanation of how to write a simple 64-bit Windows application in assembly language that calls the ExitProcess function from the KERNEL32.DLL library. It covers the following key topics: 1. **Memory and Register Basics**: Explains how memory and registers work in 64-bit Windows, including the use of the stack pointer (RSP), registers like RCX, RDX, R8, and R9 for passing arguments, and the importance of stack alignment for performance. 2. **Calling Conventions**: Details the 64-bit Windows calling convention, including how the first four integer or pointer arguments are passed in registers (RCX, RDX, R8, R9), how additional arguments are passed on the stack, and the requirement for the stack to be aligned to ...
| | venam.net
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| | An executable is something that causes a computer to perform some tasks according to encoded instructions. It's in opposition to a data file which must be parsed by another program to be meaningful, for example an image or video. The instructions are usually in machine code, read by the cpu and so dependent on the cpu architecture. An ex...
| | membarrier.wordpress.com
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| | In the previous post we saw how the memory management unit (MMU) uses page tables to translate virtual addresses into physical ones. We will now consider the various features that such a translation enables in an operating system. In the discussion below, it is important to remember that the granularity of translation is a single...
| | blog.nuculabs.dev
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| Hello, In this article I'll present you my solution on the Chapter 5 CTF from the book Practical Binary Analysis. For this binary, the hint is to fix four broken things. Running file gives us the following response: 1 2 binary@binary-VirtualBox:~/ctf$ file ./lvl3 ./lvl3: ERROR: ELF 64-bit LSB executable, Motorola Coldfire, version 1 (Novell Modesto) error reading (Invalid argument) And the readelf command gives us: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 binary@binary-VirtualBox:~/ctf$ readelf -h ./lvl3 ELF Header: Magic: 7f 45 4c 46 02 01 01 0b 00 00 00 00 00 00 00 00 Class: ELF64 Data: 2's complement, little endian Version: 1 (current) OS/ABI: Novell - Modesto ABI Version: 0 Type: EXEC (Executable file) Machine: Motorola Coldfire Version: ...