DEV Community

Obfuscating “Hello world!” obfuscate on Python

This Python 2.7 program prints "Hello world!" using extreme obfuscation. It avoids string literals and uses minimal built-in functions. The core logic involves writing to stdout via os.write, accessed using getattr and __import__. The "os" and "write" strings are constructed from parts of built-in class names. The "Hello world!" string is encoded as a large integer representing ASCII values. A recursive lambda function decodes this integer back into the string. The integer 256, used in the decoding, is represented as a bit shift (1 << 8). The large integer representing "Hello world!" is also decomposed into bit shifts and arithmetic operations. Integer literals are replaced with variables generated from a function's argument count and local variable count. A recursive lambda function generates a sequence of integers from 1 to 8, providing obfuscated replacements for integer literals. The final program is a single, complex lambda expression.
favicon
dev.to
dev.to