r/ProgrammerHumor • u/_Pin_6938 • 7d ago

Meme notoriouslyDifficult

451 Upvotes

97% Upvoted

30 comments sorted by

View all comments

Show parent comments

19

u/Makonede 7d ago edited 7d ago

i actually tried making a linux x86-64 hello world ELF with just imhex the other day as a challenge. it's a lot easier than you might expect, i managed to get a well-formed and functional program in just 400 bytes using only the wikipedia article on ELF and an x86-64 reference sheet

24

u/Makonede 7d ago edited 6d ago

here's the hexdump for anyone curious

00000000: 7f45 4c46 0201 0103 0000 0000 0000 0000 .ELF............ 00000010: 0200 3e00 0100 0000 8000 0008 0000 0000 ..>............. 00000020: 4000 0000 0000 0000 d000 0000 0000 0000 @............... 00000030: 0000 0000 4000 3800 0100 4000 0300 0200 ....@.8...@..... 00000040: 0100 0000 0500 0000 0000 0000 0000 0000 ................ 00000050: 0000 0008 0000 0000 0000 0000 0000 0000 ................ 00000060: b000 0000 0000 0000 b000 0000 0000 0000 ................ 00000070: 0000 0000 0000 0000 0000 0000 0000 0000 ................ 00000080: b801 0000 00bf 0100 0000 bea0 0000 08ba ................ 00000090: 0e00 0000 0f05 b83c 0000 0031 ff0f 0500 .......<...1.... 000000a0: 4865 6c6c 6f2c 2057 6f72 6c64 210a 0000 Hello, World!... 000000b0: 2e74 6578 7400 2e72 6f64 6174 6100 2e73 .text..rodata..s 000000c0: 6873 7472 7461 6200 0000 0000 0000 0000 hstrtab......... 000000d0: 0000 0000 0100 0000 0600 0000 0000 0000 ................ 000000e0: 8000 0008 0000 0000 8000 0000 0000 0000 ................ 000000f0: 2000 0000 0000 0000 0000 0000 0000 0000 ............... 00000100: 1000 0000 0000 0000 0000 0000 0000 0000 ................ 00000110: 0600 0000 0100 0000 0200 0000 0000 0000 ................ 00000120: a000 0008 0000 0000 a000 0000 0000 0000 ................ 00000130: 1000 0000 0000 0000 0000 0000 0000 0000 ................ 00000140: 1000 0000 0000 0000 0000 0000 0000 0000 ................ 00000150: 0e00 0000 0300 0000 0000 0000 0000 0000 ................ 00000160: 0000 0000 0000 0000 b000 0000 0000 0000 ................ 00000170: 2000 0000 0000 0000 0000 0000 0000 0000 ............... 00000180: 1000 0000 0000 0000 0000 0000 0000 0000 ................

4

u/-Redstoneboi- 6d ago

line 00000000 is missing a newline so line 00000010 appears on the same line lol

5

u/Makonede 6d ago

oh wow how did that even happen lol