title: Writeup page

# 

## Writeup's

[Naive FFT implementation in C](writeup/naive_fft_implementation_in_c.md)  
[Web assembly audio with fir filter](writeup/web_assembly_audio_with_fir_filter.md)  
[Calculate fir coefficients with C](writeup/calculate_fir_coefficients_with_c.md)  
[ARM64 assembly crc32](writeup/arm64_assembly_crc32.md)  
[ARM64 assembly hello world](writeup/arm64_assembly_hello_world.md)  
[Swift OCR example](writeup/swift_ocr_example.md)  
[Mqueue IPC example](writeup/mqueue_ipc_example.md)  
[Running disk images in QEMU](writeup/running_disk_images_in_qemu.md)  
[Linux hello world in Swift](writeup/linux_hello_world_in_swift.md)  
[Compile static python](writeup/compile_python.md)  
[Using cgroups](writeup/using_cgroups.md)  
[WebUSB example](writeup/webusb_example.md)  
[SystemC:Hello World](writeup/systemc_hello_world.md)  
[WebAssembly SDL example](writeup/web_assembly_sdl_example.md)  
[STM32F4 SDRAM configuration](writeup/stm32f4_sdram_configuration.md)  
[C macro tricks](writeup/c_macro_tricks.md)  
[DSP:Low-pass filter](writeup/dsp_lp_filter.md)  
[Kernel:/dev/hwrng](writeup/kernel_dev_hwrng.md)  
[Kernel:Debug messages](writeup/kernel_debug_messages.md)  
[Kernel:Hello World](writeup/kernel_hello_world.md)  
[Compile Linux Kernel](writeup/compile_linux_kernel.md)  
[GCC inline assembly](writeup/gcc_inline_assembly.md)  
[Using iptables](writeup/using_iptables.md)  
[Solving crackmes](writeup/crackme.md)  
[Multiboot USB drive](writeup/multiboot_usb_drive.md)  
[QEMU usage](writeup/qemu_usage.md)  
[Using GDB](writeup/using_gdb.md)  
[Linux syscall table](notes/syscalls.md)   
[Using mitmproxy](writeup/mitmproxy.md)  
[Using RTLSDR](writeup/rtlsdr_usage.md)
<!--[Write hello world with stm32](writeup/hello_world_stm32.md)  -->
<!--[Writing mount utility](writeup/writing_mount_utility.md)-->  


## Projects

| Project | Description |
| --- | --- |
| [DataMatch](writeup/datamatch.md)  | data matching language for binary files  |  
| [Radiola](writeup/radiola.md)      | rtlsdr sdr experiments                   |  
| [Kconf2h](writeup/kconf2h.md)      | convert kernel Kconfig to *.h files      |  
| [h64e](writeup/h64e.md)            | mini hexdump like hex dumper             |
| [ihe](writeup/ihe.md)              | interactive cli hex editor               |
| [fractal](writeup/wasm_fractal.md) | wasm/C written dynamic fractal generator |

## Devices
| Device | Description | Link |
| --- | --- | --- |
| [Routers](routers.md) | Routers | Dumps,photos |
| [SAMSUNG XE303C12](writeup/devices/samsung_xe303c12.md) | Google chromebook with ARM CPU | [Manufacturer](http://www.samsung.com/us/computer/chrome-os-devices/XE303C12-A01US) | 

## Non-tech
[Notes on videos](writeup/notes_on_videos.md)  
[Research uni math course content](research/math.md)  


## Archive
[Create ELF file from scratch](writeup/create_elf_file_from_scratch.md)  
[ASCIITex ascii text formating utility](writeup/asciitex_ascii_text_formating_utility.md)  
[GDB helper functions](writeup/gdb_helper_functions.md)  
[MicroBBS minimalistic BBS system](writeup/microbbs_minimalistic_bbs_system.md)  
[Serial GPS data reading utility](writeup/serial_gps_data_reading_utility.md)  
[X11 prototype GUI](writeup/x11_prototype_gui.md)  
[kconfig2h utility](writeup/kconfig2h_utility.md)  
[Linux antidebug 1](writeup/linux_antidebug_1.md)  
[Linux antidebug 2](writeup/linux_antidebug_2.md)  
[Linux antidebug 3](writeup/linux_antidebug_3.md)  
[Linux antidebug 4](writeup/linux_antidebug_4.md)  
[Linux antidebug 5](writeup/linux_antidebug_5.md)  
[C C11 standard _Generic keyword](writeup/c_c11_standard_generic_keyword.md)  
[C inline assembler](writeup/c_inline_assembler.md)  
[Wrapping C++ exceptions, templated and classes in C](writeup/wraping_c_plus_plus_exceptions_templates_and_classes_in_c.md)  
[Makefile tips](writeup/makefile_tips.md)  
[AVR disassembler](writeup/avr_disassembler.md)  
[AVR echo](writeup/avr_echo.md)   
[Basic HTTP server](writeup/basic_http_server.md)  
[Blender Scripts](writeup/blender_scripts.md)   
[C Bin2Hex](writeup/c_bin2hex.md)  
[DWM desktop environment](writeup/dwm_desktop_environment.md)  
[Assembler calculate polynomial](writeup/assembler_calculate_polynomial.md)  
[CVE 2010-1160 Exploiting nano](writeup/cve_2010_1160_exploiting_nano.md)  
[ELF rewrite function](writeup/elf_rewrite_function.md)  
[ELF text section](writeup/elf_text_section.md)  
[Embedding Lua in C](writeup/embedding_lua_in_c.md)  
[FPU catch division by zero](writeup/fpu_catch_division_by_zero.md)  
[Gimp Plugin](writeup/gimp_plugin.md)  
[Hooking interrupt descriptor table](writeup/hooking_interrupt_descriptor_table.md)  
[Linux Format String Attack](writeup/linux_format_string_attack.md)  
[Linux Local Descriptor Table](writeup/linux_local_descriptor_table.md)  
[Linux PC speaker](writeup/linux_pc_speaker.md)  
[Linux ShellCode](writeup/linux_shellcode.md)  
[Linux keyboard LED](writeup/linux_keyboard_led.md)  
[List ELF section names](writeup/list_linux_elf_section_names.md)  
[Making C executables smaller](writeup/making_c_executables_smaller.md)  
[Sauerbraten patching and cheating](writeup/sauerbraten_patching_and_cheating.md)  
[Scan memory for variable](writeup/scan_memory_for_variable.md)  


### Archive OpenWRT  
[Building OpenWRT for RTL8196C](writeup/building_openwrt_for_rtl8196c.md)  
[RTL8196C support for OpenWRT](writeup/rtl8196c_support_for_openwrt.md)  
[OpenWRT dependency graph drawing](writeup/openwrt_dependency_graph_drawing.md)