Function at 0x4d64e8
Capabilities:
Encrypt data using speck

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x38
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 - 0x38], 0xc
mov dword [ebp - 0x34], ebx
je 0x4d6517
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x4d6521
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004d7f34
test eax, eax
pop ecx
je 0x4d653c
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004b7a38
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004c1b3e
test eax, eax
pop ecx
je 0x4d6557
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004b7a38
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x4d6574
test ecx, 0x74000
jne 0x4d6570
cmp dword [ebp - 0x24], eax
je 0x4d6574
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, Ordinal_4
je 0x4d65ce
dec eax
je 0x4d65b8
dec eax
je 0x4d65b3
call fcn.004b9e3e
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004b9e2b
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004b7b34
add esp, 0x14
jmp 0x4d6b81
mov dword [ebp - 8], edx
jmp 0x4d65d1
test cl, 8
je 0x4d65c5
test ecx, 0x70000
jne 0x4d65b3
mov dword [ebp - 8], 0x40000000
jmp 0x4d65d1
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x4d6612
sub eax, ecx
je 0x4d6609
sub eax, ecx
je 0x4d6600
sub eax, ecx
je 0x4d65f7
sub eax, 0x40
jne 0x4d658d
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x4d6615
mov dword [ebp - 0x10], 3
jmp 0x4d6615
mov dword [ebp - 0x10], 2
jmp 0x4d6615
mov dword [ebp - 0x10], 1
jmp 0x4d6615
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 0x4d6668
je 0x4d665f
cmp eax, ebx
je 0x4d665f
cmp eax, edi
je 0x4d6656
cmp eax, 0x200
je 0x4d66db
cmp eax, 0x300
jne 0x4d658d
mov dword [ebp - 0x14], 2
jmp 0x4d6685
mov dword [ebp - 0x14], 4
jmp 0x4d6685
mov dword [ebp - 0x14], 3
jmp 0x4d6685
cmp eax, 0x500
je 0x4d667e
cmp eax, 0x600
je 0x4d66db
cmp eax, edx
jne 0x4d658d
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x4d66a9
mov ecx, dword [0x51ae70]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x4d66a9
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x4d66c5
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x4d66c5
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x4d66ce
or dword [ebp - 0xc], edi
test al, 0x20
je 0x4d66e4
or dword [ebp - 0xc], 0x8000000
jmp 0x4d66ef
mov dword [ebp - 0x14], 5
jmp 0x4d6685
test al, 0x10
je 0x4d66ef
or dword [ebp - 0xc], 0x10000000
call fcn.004d34ea
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x4d6715
call fcn.004b9e3e
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004b9e2b
mov dword [eax], 0x18
jmp 0x4d67a3
mov eax, dword [ebp + 8]
mov edi, dword [sym.imp.KERNEL32.dll_CreateFileW]
push ebx
push dword [ebp - 0xc]
mov dword [eax], 1
push dword [ebp - 0x14]
lea eax, [ebp - 0x38]
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 0x4d67af
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x4d677b
test byte [ebp + 0x10], 1
je 0x4d677b
and dword [ebp - 8], 0x7fffffff
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x38]
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 0x4d67af
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x51c7c0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004b9e51
pop ecx
call fcn.004b9e2b
mov eax, dword [eax]
jmp 0x4d6c3d
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x4d6800
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x51c7c0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.004b9e51
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x4d67a3
call fcn.004b9e2b
mov dword [eax], 0xd
jmp 0x4d67a3
cmp eax, 2
jne 0x4d680b
or byte [ebp - 1], 0x40
jmp 0x4d6814
cmp eax, 3
jne 0x4d6814
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004d32b9
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x51c7c0]
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 + 0x51c7c0]
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 0x4d68ea
test cl, 0x80
je 0x4d69ba
test byte [ebp + 0x10], 2
je 0x4d68ea
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004c7e53
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x4d68a8
call fcn.004b9e3e
cmp dword [eax], 0x83
je 0x4d68ea
push dword [esi]
call fcn.004c7016
jmp 0x4d67a2
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.004cdfff
add esp, 0xc
test eax, eax
jne 0x4d68da
cmp word [ebp - 0x2c], 0x1a
jne 0x4d68da
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004d7cc4
add esp, 0xc
cmp eax, edi
je 0x4d689c
push ebx
push ebx
push dword [esi]
call fcn.004c7e53
add esp, 0xc
cmp eax, edi
je 0x4d689c
test byte [ebp - 1], 0x80
je 0x4d69ba
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x4d6912
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x4d690f
or dword [ebp + 0x10], edi
jmp 0x4d6912
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x4d695f
cmp eax, 0x10000
je 0x4d694b
cmp eax, 0x14000
je 0x4d694b
cmp eax, 0x20000
je 0x4d6959
cmp eax, 0x24000
je 0x4d6959
cmp eax, 0x40000
je 0x4d6945
cmp eax, 0x44000
jne 0x4d6962
mov byte [ebp - 2], 1
jmp 0x4d6962
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x4d6962
mov byte [ebp - 2], 2
jmp 0x4d6962
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x4d69ba
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x4d69ba
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x4d6b14
cmp eax, 0x80000000
je 0x4d6adb
cmp eax, ecx
jne 0x4d69ba
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4d69ba
cmp eax, 2
jbe 0x4d6bbc
cmp eax, 4
jbe 0x4d6aad
cmp eax, 5
je 0x4d6bbc
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x51c7c0]
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 + 0x51c7c0]
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 0x4d6a2c
test byte [ebp + 0x10], 8
je 0x4d6a2c
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x51c7c0]
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 0x4d6c3b
test byte [ebp + 0x10], 1
je 0x4d6c3b
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x38]
push 3
push eax
push dword [ebp - 0x10]
and edi, 0x7fffffff
push edi
push dword [ebp + 0xc]
call dword [sym.imp.KERNEL32.dll_CreateFileW]
cmp eax, 0xffffffff
jne 0x4d6c24
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004b9e51
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x51c7c0]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004d3336
pop ecx
jmp 0x4d67a2
push 2
push ebx
push ebx
push dword [esi]
call fcn.004cf42f
add esp, 0x10
or eax, edx
je 0x4d6bbc
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004cf42f
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x4d689c
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004cdfff
add esp, 0xc
cmp eax, 0xffffffff
je 0x4d689c
cmp eax, 2
je 0x4d6b60
cmp eax, 3
jne 0x4d6bae
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x4d6b60
mov byte [ebp - 2], 1
jmp 0x4d69ba
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4d69ba
cmp eax, 2
jbe 0x4d6bbc
cmp eax, 4
ja 0x4d69b1
push 2
push ebx
push ebx
push dword [esi]
call fcn.004cf42f
add esp, 0x10
or eax, edx
je 0x4d6bbc
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004cf42f
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x4d69ba
jmp 0x4d689c
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x4d6b88
push dword [esi]
call fcn.004c7016
pop ecx
call fcn.004b9e2b
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x4d6c3d
cmp eax, 0xfeff
jne 0x4d6bae
push ebx
push 2
push dword [esi]
call fcn.004c7e53
add esp, 0xc
cmp eax, 0xffffffff
je 0x4d689c
mov byte [ebp - 2], 2
jmp 0x4d69ba
push ebx
push ebx
push dword [esi]
call fcn.004c7e53
add esp, 0xc
jmp 0x4d6b52
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x4d6bdc
dec eax
jne 0x4d69ba
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x4d6bea
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.004c6119
add esp, 0xc
cmp eax, 0xffffffff
je 0x4d6c10
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x4d6bea
jmp 0x4d69ba
push dword [esi]
call fcn.004c7016
pop ecx
call fcn.004b9e2b
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x4d6c3d
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x51c7c0]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret