just shellcodes i use when ctf:ing

64 bit:

compile with:

nasm -f elf64 64sh.asm

ld -N -s 64sh.o -o 64sh

./64sh

or if you just want the bytecode

nasm 64sh.asm

python sc.py 64sh

32bit:

nasm -f elf 32sh.asm

ld -N -s 32sh.o -o 32sh

./32sh

or if you just want the bytecode

nasm 32sh.asm

python sc.py 32sh