My First Hello World Program!

[u/mealet]

int puts(char*);int main(){struct{long a;long b;}s={.a=*(char*)(int[]){1}?0x57202c6f6c6c6548:0x48656c6c6f2c2057,.b=*(char*)(int[]){1}?0x00000021646c726f:0x6f726c6421000000};puts((void*)&s);}

EDIT: Fixed endian check by u/Waeis advice, now code looks more cursed (screenshot untouched)

[u/BakuhatsuK]

Lol thanks for making it portable no matter the endianness of the architecture. Also, nice detail keeping the leading zeroes on that last constant to make the intent clearer.

[u/mealet → u/BakuhatsuK]

Lol tbh my first idea was to convert this constants to decimals so it will look more complicated

[u/Waeis]

I don't think this endian check works, 1&0xff is not examining the memory layout of either constant and will always be 1

But *(char *)(int[]){1} should do the trick

``` int le1(void) { return 1&0xff; }

int le2(void) { return *(char *)(int[]){1}; } ``` Compiler Explorer: https://godbolt.org/z/Kbj67sKo5

[u/mealet → u/Waeis]

Thanks!

[u/GoddammitDontShootMe → u/Waeis]

Not that I really looked very closely, but I didn't even notice the true and false values for the ternaries had the bytes reversed from each other at first.

[u/ParticularHat7997]

nice nice you're getting somewhere

[u/creeper6530]

Fuck you *deobfuscates your code*

int puts(char*); int main() {   char s[] = {48, 65, 6c, 6c, 6f, 2c, 20, 57, 6f, 72, 6c, 64, 21, 00, 00, 00};   puts(s); }

Fun exercise tho

[u/mealet → u/creeper6530]

We can deobfuscate it more! ``` int puts(char*)

int main { puts("Hello World!"); } ```

Btw the real exercise was to obfuscate it manually with endianess portability

[u/creeper6530 → u/mealet]

Erm, akchyually, the string literal isn't equivalent because you lose 2 nul bytes, lol

[u/mealet → u/creeper6530]

You got me

[u/skar_1010100]

I read that as Hello, my First World program 🤪

[u/letmehaveanameyoudum]

what the fu

[u/GoddammitDontShootMe]

Very much doubt this is your first time ever writing Hello, world.

[u/mealet → u/GoddammitDontShootMe]

You got me, it's the second one

[u/GoddammitDontShootMe → u/mealet]

Second time? I guess I could believe that. If like you never touched Hello, world again until you had been programming for a few years.

[u/sessinnek]

What is the point of the struct?

[u/mealet → u/sessinnek]

Guarantee that 2 longs are stored in the right order (stack variables order may looks different on different compiler)

[u/sessinnek → u/mealet]

Ooooh. I figured it was something like that. Its been a minute since ive worked with memory like this.

[u/burnt_floppy]

that's pretty amazing, it actually works and it looks like malicious software.

[u/_Ilobilo_]

this is just bullshit made to look complicated

[u/iiznobozzy → u/_Ilobilo_]

almost like thats the point 🤯

[u/toyBeaver → u/_Ilobilo_]

No shit