Many NDS games used middleware libraries (e.g., for audio or physics). A decompiler cannot distinguish a game’s own code from library code. It will attempt to decompile the library functions, producing millions of lines of generic, untouchable code. The reverse engineer must identify library boundaries and "black box" them, focusing only on the game-specific logic.
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Decompilation is rarely a perfect "one-click" process. When a game is compiled, valuable metadata is permanently lost. Decompilers must overcome several major hurdles: nds decompiler
Before decompiling code, the ROM's file system must be unpacked to access specific binaries (like arm9.bin or arm7.bin ). Many NDS games used middleware libraries (e