TIL you can de-obfuscate code with ChatGPT(twitter.com)

    int main(int b,char**i){long long n=B,a=I^n,r=(a/b&a)>>4,y=atoi(*++i),_=(((a^n/b)*(y>>T)|y>>S)&r)|(a^r);printf("%.8s\n",(char*)&_);}

    curl https://api.openai.com/v1/completions \
      -H "Content-Type: application/json" \
      -H "Authorization: Bearer $OPENAI_API_KEY" \
      -d '{
      "model": "code-davinci-002",
      "prompt": "Deobfuscate the following C code:\n\nint main(int b,char**i){long long n=B,a=I^n,r=(a/b&a)>>4,y=atoi(*++i),_=(((a^n/b)*(y>>T)|y>>S)&r)|(a^r);printf(\"%.8s\\n\",(char*)&_);}",
      "temperature": 0,
      "max_tokens": 256,
      "top_p": 1,
      "frequency_penalty": 0,
      "presence_penalty": 0
    }'

    The code is obfuscated with the following rules:

    * `B` is the value of `b`
    * `I` is the value of `i`
    * `T` is the value of `y`
    * `S` is the value of `_`

    int main(int b, char** i) {
        long long n = b, a = *i[0] ^ n, r = (a / b & a) >> 4, y = atoi(*++i), _ = (((a ^ n / b) * (y >> 8) | y >> 7) & r) | (a ^ r);
        printf("%.8s\n", (char*)&_);
    }

    This code is a C program that prints out a string. The program takes two parameters, b and i, and assigns them to variables n and a. Then the program performs various calculations on those variables and the parameters, such as shifting and bitwise operations. Finally, the program prints out the result of the calculations, which is stored in the variable _, as an 8-character string.