Printable ASCII characters which are also valid x86 instructions

printable_x86.py

import string
from capstone import *

modes = [CS_MODE_32, CS_MODE_64]

for mode in modes:
    md = Cs(CS_ARCH_X86, mode)
    printables = string.printable[:-5]
    valid = 0
    for c in printables:
        dis = list(md.disasm(bytes([ord(c)]), 0x1000))
        if len(dis) == 1:
            for i in dis: 
                print("|%s| ->\t%s\t%s" %(c, i.mnemonic, i.op_str))
            valid += 1
        elif len(dis) == 0:     
            print(f"|{c}|")
        else:
            assert False
    print(f'{valid}/{len(printables)}')


''' x86_32
|0|
|1|
|2|
|3|
|4|
|5|
|6|
|7| ->	aaa	
|8|
|9|
|a| ->	popal	
|b|
|c|
|d|
|e|
|f|
|g|
|h|
|i|
|j|
|k|
|l| ->	insb	byte ptr es:[edi], dx
|m| ->	insd	dword ptr es:[edi], dx
|n| ->	outsb	dx, byte ptr [esi]
|o| ->	outsd	dx, dword ptr [esi]
|p|
|q|
|r|
|s|
|t|
|u|
|v|
|w|
|x|
|y|
|z|
|A| ->	inc	ecx
|B| ->	inc	edx
|C| ->	inc	ebx
|D| ->	inc	esp
|E| ->	inc	ebp
|F| ->	inc	esi
|G| ->	inc	edi
|H| ->	dec	eax
|I| ->	dec	ecx
|J| ->	dec	edx
|K| ->	dec	ebx
|L| ->	dec	esp
|M| ->	dec	ebp
|N| ->	dec	esi
|O| ->	dec	edi
|P| ->	push	eax
|Q| ->	push	ecx
|R| ->	push	edx
|S| ->	push	ebx
|T| ->	push	esp
|U| ->	push	ebp
|V| ->	push	esi
|W| ->	push	edi
|X| ->	pop	eax
|Y| ->	pop	ecx
|Z| ->	pop	edx
|!|
|"|
|#|
|$|
|%|
|&|
|'| ->	daa	
|(|
|)|
|*|
|+|
|,|
|-|
|.|
|/| ->	das	
|:|
|;|
|<|
|=|
|>|
|?| ->	aas	
|@| ->	inc	eax
|[| ->	pop	ebx
|\| ->	pop	esp
|]| ->	pop	ebp
|^| ->	pop	esi
|_| ->	pop	edi
|`| ->	pushal	
|{|
|||
|}|
|~|
| |
42/95
'''

''' x86_64
|0|
|1|
|2|
|3|
|4|
|5|
|6|
|7|
|8|
|9|
|a|
|b|
|c|
|d|
|e|
|f|
|g|
|h|
|i|
|j|
|k|
|l| ->	insb	byte ptr [rdi], dx
|m| ->	insd	dword ptr [rdi], dx
|n| ->	outsb	dx, byte ptr [rsi]
|o| ->	outsd	dx, dword ptr [rsi]
|p|
|q|
|r|
|s|
|t|
|u|
|v|
|w|
|x|
|y|
|z|
|A|
|B|
|C|
|D|
|E|
|F|
|G|
|H|
|I|
|J|
|K|
|L|
|M|
|N|
|O|
|P| ->	push	rax
|Q| ->	push	rcx
|R| ->	push	rdx
|S| ->	push	rbx
|T| ->	push	rsp
|U| ->	push	rbp
|V| ->	push	rsi
|W| ->	push	rdi
|X| ->	pop	rax
|Y| ->	pop	rcx
|Z| ->	pop	rdx
|!|
|"|
|#|
|$|
|%|
|&|
|'|
|(|
|)|
|*|
|+|
|,|
|-|
|.|
|/|
|:|
|;|
|<|
|=|
|>|
|?|
|@|
|[| ->	pop	rbx
|\| ->	pop	rsp
|]| ->	pop	rbp
|^| ->	pop	rsi
|_| ->	pop	rdi
|`|
|{|
|||
|}|
|~|
| |
20/95
'''