https://sudonull.com/mbr-324-bytes-stm32f407ve-compact-bootloader
Minimal primary bootloader for STM32F407VE (324 bytes). Vector validation, jump to 0x08060000, LED blinking on error. Code + Makefile for ARM-GCC.
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https://sudonull.com/hid-in-logitech-storing-2-bytes-in-dpi-register
Analysis of HID++ 2.0 protocol for storing data in Logitech mice. Session 2-byte storage in DPI, bypassing IOHIDManager macOS. Rust code for mid-level developers. Learn reverse engineering.
https://sudonull.com/prng-on-12-timers-php-entropy-7-1-bits
Implementation of an experimental random bytes generator in PHP with 12 timers. Entropy up to 8 bits, code with pauses and switch. Test for tokens and experiments — figure out the nonlinearity.
https://sudonull.com/kafka-safety-window-retention-monitoring
Learn how to prevent data loss in Kafka due to retention.bytes. Implement Data Safety Window in Grafana with PromQL. Tuning case for high-load topics — instructions for Platform Engineers.
https://sudonull.com/ude-cyrillic-errors-c-encoding-detection
Analysis of Ude library errors when recognizing MacCyrillic vs Windows-1251 in C#. Heuristic fix on strange bytes. Code, examples, limitations for developers.
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