def _cat_linux_arm(filepath, out_fd):
return (open_file(filepath),
'mov r8, r0\ncat_helper1:',
read_stack('r8', 48, False),
'cmp r0, #0\nble cat_helper2',
write_stack(out_fd, 'r0'),
'b cat_helper1\ncat_helper2:')
def _cat_amd64(filepath, out_fd, use_sendfile):
if use_sendfile:
return open_file(filepath), sendfile('rax', out_fd)
else:
return (open_file(filepath), "xchg ebp, eax\ncat_helper1:",
read_stack('rbp', 48, False), "test eax, eax\njle cat_helper2",
write_stack(out_fd, 'rax'), "jmp cat_helper1\ncat_helper2:")
def ls(filepath='.', out_fd=1):
"""Args: filepath, [out_fd (imm/reg) = STDOUT_FILENO]
Opens a directory and writes its content to the specified file descriptor.
"""
return (open_file(filepath), "xchg ebp, eax\nls_helper1:",
getdents('ebp', 255, False), "test eax, eax\njle ls_helper2",
write_stack(out_fd, 'eax'), "jmp ls_helper1\nls_helper2:")
def _cat_amd64(filepath, out_fd, use_sendfile):
if use_sendfile:
return open_file(filepath), sendfile('rax', out_fd)
else:
return (open_file(filepath),
"xchg ebp, eax\ncat_helper1:",
read_stack('rbp', 48, False),
"test eax, eax\njle cat_helper2",
write_stack(out_fd, 'rax'),
"jmp cat_helper1\ncat_helper2:")
def _ls_linux_i386(filepath='.', out_fd = 1, in_fd = 0):
out = (open_file(filepath),
"xchg ebp, eax\n",
"ls_helper1:\n",
getdents('ebp', 255, False),
"test eax, eax\n",
"jle ls_helper2\n",
write_stack(out_fd, 'eax'),
"jmp ls_helper1\n",
"ls_helper2:\n")
return out
def ls(filepath = '.', out_fd = 1):
"""Args: filepath, [out_fd (imm/reg) = STDOUT_FILENO]
Opens a directory and writes its content to the specified file descriptor.
"""
return (open_file(filepath),
"xchg ebp, eax\nls_helper1:",
getdents('ebp', 255, False),
"test eax, eax\njle ls_helper2",
write_stack(out_fd, 'eax'),
"jmp ls_helper1\nls_helper2:")
def _ls_linux_arm(filepath='.', out_fd = 1, in_fd = 0):
out = (open_file(filepath),
"mov r6, r0\n", # backup the file descriptor
"loop:\n",
getdents(in_fd),
"sub r4, r4, r4\n",
"cmp r0, r4\n",
"ble next\n",
write_stack(out_fd, size=255),
"sub r4, r4, r4\n",
"cmp r0, r4\n",
"bgt loop\n",
"next:\n",
)
return out
def _cat_linux_arm(filepath, out_fd):
return (open_file(filepath), 'mov r8, r0\ncat_helper1:',
read_stack('r8', 48, False), 'cmp r0, #0\nble cat_helper2',
write_stack(out_fd, 'r0'), 'b cat_helper1\ncat_helper2:')
def echo(str, out=1):
"""Args: str, [out = 1]
Writes <str> to <out> (default: STDOUT_FILENO)."""
return pushstr(str, null=False), write_stack(out, len(str))
def echo(str, out = 1):
"""Args: str, [out = 1]
Writes <str> to <out> (default: STD_OUT)."""
return pushstr(str, null=False), write_stack(out, len(str))
