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A heavily obfuscated JavaScript file implements a multi-stage data transformation pipeline hidden behind control-flow flattening and state-machine execution patterns. At first glance, the code appears noisy and intentionally misleading, with decoy values and dynamic execution paths obscuring the real logic.

Your task is to analyze the script, reconstruct the actual execution flow, and understand how the encoded byte array is produced and transformed. The challenge involves stepping through flattened control structures, identifying deterministic transformations, and reversing a sequence of arithmetic, bitwise, and permutation-based operations to recover the original output.

Familiarity with JavaScript internals, modular arithmetic, and obfuscation techniques will be essential to make sense of the underlying logic and reach the final result.

 

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