Function at 0x4d6e2c
Capabilities:
Encrypt data using speck

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x34
push ebx
xor ebx, ebx
test byte [ebp + 0x10], 0x80
push esi
push edi
mov esi, eax
mov dword [ebp - 0x24], ebx
mov dword [ebp - 0x28], ebx
mov byte [ebp - 2], bl
mov dword [ebp - 0x34], 0xc
mov dword [ebp - 0x30], ebx
je 0x4d6e5b
mov dword [ebp - 0x2c], ebx
mov byte [ebp - 1], 0x10
jmp 0x4d6e65
mov dword [ebp - 0x2c], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004defcb
test eax, eax
pop ecx
je 0x4d6e80
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004bfeec
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004c9dfb
test eax, eax
pop ecx
je 0x4d6e9b
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004bfeec
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x4d6eb8
test ecx, 0x74000
jne 0x4d6eb4
cmp dword [ebp - 0x24], eax
je 0x4d6eb8
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, 0x80000000
je 0x4d6f12
dec eax
je 0x4d6efc
dec eax
je 0x4d6ef7
call fcn.004ca0bc
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004ca0a9
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004bffe8
add esp, 0x14
jmp 0x4d74c4
mov dword [ebp - 8], edx
jmp 0x4d6f15
test cl, 8
je 0x4d6f09
test ecx, 0x70000
jne 0x4d6ef7
mov dword [ebp - 8], 0x40000000
jmp 0x4d6f15
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x4d6f56
sub eax, ecx
je 0x4d6f4d
sub eax, ecx
je 0x4d6f44
sub eax, ecx
je 0x4d6f3b
sub eax, 0x40
jne 0x4d6ed1
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x4d6f59
mov dword [ebp - 0x10], 3
jmp 0x4d6f59
mov dword [ebp - 0x10], 2
jmp 0x4d6f59
mov dword [ebp - 0x10], 1
jmp 0x4d6f59
mov dword [ebp - 0x10], ebx
mov eax, dword [ebp + 0x10]
mov edx, 0x700
and eax, edx
mov ecx, 0x400
cmp eax, ecx
mov edi, 0x100
jg 0x4d6fac
je 0x4d6fa3
cmp eax, ebx
je 0x4d6fa3
cmp eax, edi
je 0x4d6f9a
cmp eax, 0x200
je 0x4d701f
cmp eax, 0x300
jne 0x4d6ed1
mov dword [ebp - 0x14], 2
jmp 0x4d6fc9
mov dword [ebp - 0x14], 4
jmp 0x4d6fc9
mov dword [ebp - 0x14], 3
jmp 0x4d6fc9
cmp eax, 0x500
je 0x4d6fc2
cmp eax, 0x600
je 0x4d701f
cmp eax, edx
jne 0x4d6ed1
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x4d6fed
mov ecx, dword [0x78e8a4]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x4d6fed
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x4d7009
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x4d7009
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x4d7012
or dword [ebp - 0xc], edi
test al, 0x20
je 0x4d7028
or dword [ebp - 0xc], 0x8000000
jmp 0x4d7033
mov dword [ebp - 0x14], 5
jmp 0x4d6fc9
test al, 0x10
je 0x4d7033
or dword [ebp - 0xc], 0x10000000
call fcn.004cb3fc
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x4d7059
call fcn.004ca0bc
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004ca0a9
mov dword [eax], 0x18
jmp 0x4d70e7
mov eax, dword [ebp + 8]
mov edi, dword [sym.imp.KERNEL32.dll_CreateFileA]
push ebx
push dword [ebp - 0xc]
mov dword [eax], 1
push dword [ebp - 0x14]
lea eax, [ebp - 0x34]
push eax
push dword [ebp - 0x10]
push dword [ebp - 8]
push dword [ebp + 0xc]
call edi
cmp eax, 0xffffffff
mov dword [ebp - 0x1c], eax
jne 0x4d70f3
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x4d70bf
test byte [ebp + 0x10], 1
je 0x4d70bf
and dword [ebp - 8], 0x7fffffff
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x34]
push dword [ebp - 0x14]
push eax
push dword [ebp - 0x10]
push dword [ebp - 8]
push dword [ebp + 0xc]
call edi
cmp eax, 0xffffffff
mov dword [ebp - 0x1c], eax
jne 0x4d70f3
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x790800]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004ca0cf
pop ecx
call fcn.004ca0a9
mov eax, dword [eax]
jmp 0x4d7580
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x4d7144
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x790800]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.004ca0cf
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x4d70e7
call fcn.004ca0a9
mov dword [eax], 0xd
jmp 0x4d70e7
cmp eax, 2
jne 0x4d714f
or byte [ebp - 1], 0x40
jmp 0x4d7158
cmp eax, 3
jne 0x4d7158
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004cb1cb
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x790800]
pop ecx
pop ecx
mov cl, byte [ebp - 1]
or cl, 1
mov byte [edx + eax + 4], cl
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x790800]
lea eax, [edx + eax + 0x24]
and byte [eax], 0x80
mov byte [ebp - 3], cl
and byte [ebp - 3], 0x48
mov byte [ebp - 1], cl
jne 0x4d722d
test cl, 0x80
je 0x4d72fd
test byte [ebp + 0x10], 2
je 0x4d722d
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004d38c5
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x4d71ec
call fcn.004ca0bc
cmp dword [eax], 0x83
je 0x4d722d
push dword [esi]
call fcn.004c7116
jmp 0x4d70e6
push 1
lea eax, [ebp - 4]
push eax
push dword [esi]
mov byte [ebp - 4], bl
call fcn.004c9561
add esp, 0xc
test eax, eax
jne 0x4d721d
cmp byte [ebp - 4], 0x1a
jne 0x4d721d
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004ded5b
add esp, 0xc
cmp eax, edi
je 0x4d71e0
push ebx
push ebx
push dword [esi]
call fcn.004d38c5
add esp, 0xc
cmp eax, edi
je 0x4d71e0
test byte [ebp - 1], 0x80
je 0x4d72fd
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x4d7255
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x4d7252
or dword [ebp + 0x10], edi
jmp 0x4d7255
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x4d72a2
cmp eax, 0x10000
je 0x4d728e
cmp eax, 0x14000
je 0x4d728e
cmp eax, 0x20000
je 0x4d729c
cmp eax, 0x24000
je 0x4d729c
cmp eax, 0x40000
je 0x4d7288
cmp eax, 0x44000
jne 0x4d72a5
mov byte [ebp - 2], 1
jmp 0x4d72a5
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x4d72a5
mov byte [ebp - 2], 2
jmp 0x4d72a5
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x4d72fd
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x4d72fd
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x4d7457
cmp eax, 0x80000000
je 0x4d741e
cmp eax, ecx
jne 0x4d72fd
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4d72fd
cmp eax, 2
jbe 0x4d74ff
cmp eax, 4
jbe 0x4d73f0
cmp eax, 5
je 0x4d74ff
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x790800]
lea eax, [ecx + eax + 0x24]
mov cl, byte [eax]
xor cl, byte [ebp - 2]
and cl, 0x7f
xor byte [eax], cl
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x790800]
lea eax, [ecx + eax + 0x24]
mov ecx, dword [ebp + 0x10]
mov dl, byte [eax]
shr ecx, 0x10
shl cl, 7
and dl, 0x7f
or cl, dl
cmp byte [ebp - 3], bl
mov byte [eax], cl
jne 0x4d736f
test byte [ebp + 0x10], 8
je 0x4d736f
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x790800]
lea eax, [ecx + eax + 4]
or byte [eax], 0x20
mov edi, dword [ebp - 8]
mov eax, 0xc0000000
mov ecx, edi
and ecx, eax
cmp ecx, eax
jne 0x4d757e
test byte [ebp + 0x10], 1
je 0x4d757e
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x34]
push 3
push eax
push dword [ebp - 0x10]
and edi, 0x7fffffff
push edi
push dword [ebp + 0xc]
call dword [sym.imp.KERNEL32.dll_CreateFileA]
cmp eax, 0xffffffff
jne 0x4d7567
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004ca0cf
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x790800]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004cb248
pop ecx
jmp 0x4d70e6
push 2
push ebx
push ebx
push dword [esi]
call fcn.004c6f24
add esp, 0x10
or eax, edx
je 0x4d74ff
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004c6f24
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x4d71e0
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004c9561
add esp, 0xc
cmp eax, 0xffffffff
je 0x4d71e0
cmp eax, 2
je 0x4d74a3
cmp eax, 3
jne 0x4d74f1
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x4d74a3
mov byte [ebp - 2], 1
jmp 0x4d72fd
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4d72fd
cmp eax, 2
jbe 0x4d74ff
cmp eax, 4
ja 0x4d72f4
push 2
push ebx
push ebx
push dword [esi]
call fcn.004c6f24
add esp, 0x10
or eax, edx
je 0x4d74ff
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004c6f24
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x4d72fd
jmp 0x4d71e0
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x4d74cb
push dword [esi]
call fcn.004c7116
pop ecx
call fcn.004ca0a9
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x4d7580
cmp eax, 0xfeff
jne 0x4d74f1
push ebx
push 2
push dword [esi]
call fcn.004d38c5
add esp, 0xc
cmp eax, 0xffffffff
je 0x4d71e0
mov byte [ebp - 2], 2
jmp 0x4d72fd
push ebx
push ebx
push dword [esi]
call fcn.004d38c5
add esp, 0xc
jmp 0x4d7495
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x4d751f
dec eax
jne 0x4d72fd
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x4d752d
mov dword [ebp - 0x18], 0xbfbbef
mov dword [ebp - 0x14], 3
mov eax, dword [ebp - 0x14]
sub eax, edi
push eax
lea eax, [ebp + edi - 0x18]
push eax
push dword [esi]
call fcn.004c6e48
add esp, 0xc
cmp eax, 0xffffffff
je 0x4d7553
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x4d752d
jmp 0x4d72fd
push dword [esi]
call fcn.004c7116
pop ecx
call fcn.004ca0a9
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x4d7580
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x790800]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret