Function at 0x4285d3
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 0x428602
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x42860c
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.00426207
test eax, eax
pop ecx
je 0x428627
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0041413e
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.0041b617
test eax, eax
pop ecx
je 0x428642
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0041413e
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x42865f
test ecx, 0x74000
jne 0x42865b
cmp dword [ebp - 0x24], eax
je 0x42865f
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, 0x80000000
je 0x4286b9
dec eax
je 0x4286a3
dec eax
je 0x42869e
call fcn.00414acb
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.00414ab8
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.0041423a
add esp, 0x14
jmp 0x428c6c
mov dword [ebp - 8], edx
jmp 0x4286bc
test cl, 8
je 0x4286b0
test ecx, 0x70000
jne 0x42869e
mov dword [ebp - 8], 0x40000000
jmp 0x4286bc
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x4286fd
sub eax, ecx
je 0x4286f4
sub eax, ecx
je 0x4286eb
sub eax, ecx
je 0x4286e2
sub eax, 0x40
jne 0x428678
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x428700
mov dword [ebp - 0x10], 3
jmp 0x428700
mov dword [ebp - 0x10], 2
jmp 0x428700
mov dword [ebp - 0x10], 1
jmp 0x428700
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 0x428753
je 0x42874a
cmp eax, ebx
je 0x42874a
cmp eax, edi
je 0x428741
cmp eax, 0x200
je 0x4287c6
cmp eax, 0x300
jne 0x428678
mov dword [ebp - 0x14], 2
jmp 0x428770
mov dword [ebp - 0x14], 4
jmp 0x428770
mov dword [ebp - 0x14], 3
jmp 0x428770
cmp eax, 0x500
je 0x428769
cmp eax, 0x600
je 0x4287c6
cmp eax, edx
jne 0x428678
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x428794
mov ecx, dword [0x438738]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x428794
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x4287b0
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x4287b0
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x4287b9
or dword [ebp - 0xc], edi
test al, 0x20
je 0x4287cf
or dword [ebp - 0xc], 0x8000000
jmp 0x4287da
mov dword [ebp - 0x14], 5
jmp 0x428770
test al, 0x10
je 0x4287da
or dword [ebp - 0xc], 0x10000000
call fcn.00423eba
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x428800
call fcn.00414acb
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.00414ab8
mov dword [eax], 0x18
jmp 0x42888e
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 0x42889a
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x428866
test byte [ebp + 0x10], 1
je 0x428866
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 0x42889a
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x438e60]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.00414ade
pop ecx
call fcn.00414ab8
mov eax, dword [eax]
jmp 0x428d28
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x4288eb
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x438e60]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.00414ade
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x42888e
call fcn.00414ab8
mov dword [eax], 0xd
jmp 0x42888e
cmp eax, 2
jne 0x4288f6
or byte [ebp - 1], 0x40
jmp 0x4288ff
cmp eax, 3
jne 0x4288ff
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.00423c89
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x438e60]
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 + 0x438e60]
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 0x4289d5
test cl, 0x80
je 0x428aa5
test byte [ebp + 0x10], 2
je 0x4289d5
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.0041be30
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x428993
call fcn.00414acb
cmp dword [eax], 0x83
je 0x4289d5
push dword [esi]
call fcn.0041ba63
jmp 0x42888d
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.0041aeb0
add esp, 0xc
test eax, eax
jne 0x4289c5
cmp word [ebp - 0x2c], 0x1a
jne 0x4289c5
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.00425f97
add esp, 0xc
cmp eax, edi
je 0x428987
push ebx
push ebx
push dword [esi]
call fcn.0041be30
add esp, 0xc
cmp eax, edi
je 0x428987
test byte [ebp - 1], 0x80
je 0x428aa5
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x4289fd
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x4289fa
or dword [ebp + 0x10], edi
jmp 0x4289fd
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x428a4a
cmp eax, 0x10000
je 0x428a36
cmp eax, 0x14000
je 0x428a36
cmp eax, 0x20000
je 0x428a44
cmp eax, 0x24000
je 0x428a44
cmp eax, 0x40000
je 0x428a30
cmp eax, 0x44000
jne 0x428a4d
mov byte [ebp - 2], 1
jmp 0x428a4d
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x428a4d
mov byte [ebp - 2], 2
jmp 0x428a4d
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x428aa5
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x428aa5
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x428bff
cmp eax, 0x80000000
je 0x428bc6
cmp eax, ecx
jne 0x428aa5
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x428aa5
cmp eax, 2
jbe 0x428ca7
cmp eax, 4
jbe 0x428b98
cmp eax, 5
je 0x428ca7
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x438e60]
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 + 0x438e60]
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 0x428b17
test byte [ebp + 0x10], 8
je 0x428b17
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x438e60]
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 0x428d26
test byte [ebp + 0x10], 1
je 0x428d26
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 0x428d0f
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.00414ade
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x438e60]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.00423d06
pop ecx
jmp 0x42888d
push 2
push ebx
push ebx
push dword [esi]
call fcn.004238a3
add esp, 0x10
or eax, edx
je 0x428ca7
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004238a3
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x428987
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.0041aeb0
add esp, 0xc
cmp eax, 0xffffffff
je 0x428987
cmp eax, 2
je 0x428c4b
cmp eax, 3
jne 0x428c99
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x428c4b
mov byte [ebp - 2], 1
jmp 0x428aa5
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x428aa5
cmp eax, 2
jbe 0x428ca7
cmp eax, 4
ja 0x428a9c
push 2
push ebx
push ebx
push dword [esi]
call fcn.004238a3
add esp, 0x10
or eax, edx
je 0x428ca7
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004238a3
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x428aa5
jmp 0x428987
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x428c73
push dword [esi]
call fcn.0041ba63
pop ecx
call fcn.00414ab8
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x428d28
cmp eax, 0xfeff
jne 0x428c99
push ebx
push 2
push dword [esi]
call fcn.0041be30
add esp, 0xc
cmp eax, 0xffffffff
je 0x428987
mov byte [ebp - 2], 2
jmp 0x428aa5
push ebx
push ebx
push dword [esi]
call fcn.0041be30
add esp, 0xc
jmp 0x428c3d
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x428cc7
dec eax
jne 0x428aa5
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x428cd5
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.0041aae6
add esp, 0xc
cmp eax, 0xffffffff
je 0x428cfb
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x428cd5
jmp 0x428aa5
push dword [esi]
call fcn.0041ba63
pop ecx
call fcn.00414ab8
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x428d28
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x438e60]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret