Function at 0x43551e
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 0x43554d
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x435557
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.00432e18
test eax, eax
pop ecx
je 0x435572
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004284d7
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.00427ed0
test eax, eax
pop ecx
je 0x43558d
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004284d7
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x4355aa
test ecx, 0x74000
jne 0x4355a6
cmp dword [ebp - 0x24], eax
je 0x4355aa
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, closesocket
je 0x435604
dec eax
je 0x4355ee
dec eax
je 0x4355e9
call fcn.0042b345
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0042b332
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004285d3
add esp, 0x14
jmp 0x435bb7
mov dword [ebp - 8], edx
jmp 0x435607
test cl, 8
je 0x4355fb
test ecx, 0x70000
jne 0x4355e9
mov dword [ebp - 8], 0x40000000
jmp 0x435607
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x435648
sub eax, ecx
je 0x43563f
sub eax, ecx
je 0x435636
sub eax, ecx
je 0x43562d
sub eax, 0x40
jne 0x4355c3
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x43564b
mov dword [ebp - 0x10], 3
jmp 0x43564b
mov dword [ebp - 0x10], 2
jmp 0x43564b
mov dword [ebp - 0x10], 1
jmp 0x43564b
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 0x43569e
je 0x435695
cmp eax, ebx
je 0x435695
cmp eax, edi
je 0x43568c
cmp eax, 0x200
je 0x435711
cmp eax, 0x300
jne 0x4355c3
mov dword [ebp - 0x14], 2
jmp 0x4356bb
mov dword [ebp - 0x14], 4
jmp 0x4356bb
mov dword [ebp - 0x14], 3
jmp 0x4356bb
cmp eax, 0x500
je 0x4356b4
cmp eax, 0x600
je 0x435711
cmp eax, edx
jne 0x4355c3
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x4356df
mov ecx, dword [0x47c2c0]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x4356df
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x4356fb
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x4356fb
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x435704
or dword [ebp - 0xc], edi
test al, 0x20
je 0x43571a
or dword [ebp - 0xc], 0x8000000
jmp 0x435725
mov dword [ebp - 0x14], 5
jmp 0x4356bb
test al, 0x10
je 0x435725
or dword [ebp - 0xc], 0x10000000
call fcn.00429ba3
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x43574b
call fcn.0042b345
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0042b332
mov dword [eax], 0x18
jmp 0x4357d9
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 0x4357e5
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x4357b1
test byte [ebp + 0x10], 1
je 0x4357b1
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 0x4357e5
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x47ce80]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.0042b358
pop ecx
call fcn.0042b332
mov eax, dword [eax]
jmp 0x435c73
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x435836
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x47ce80]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.0042b358
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x4357d9
call fcn.0042b332
mov dword [eax], 0xd
jmp 0x4357d9
cmp eax, 2
jne 0x435841
or byte [ebp - 1], 0x40
jmp 0x43584a
cmp eax, 3
jne 0x43584a
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.00429972
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x47ce80]
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 + 0x47ce80]
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 0x435920
test cl, 0x80
je 0x4359f0
test byte [ebp + 0x10], 2
je 0x435920
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.0043b013
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x4358de
call fcn.0042b345
cmp dword [eax], 0x83
je 0x435920
push dword [esi]
call fcn.00433f9f
jmp 0x4357d8
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.00438c52
add esp, 0xc
test eax, eax
jne 0x435910
cmp word [ebp - 0x2c], 0x1a
jne 0x435910
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.0043ae5f
add esp, 0xc
cmp eax, edi
je 0x4358d2
push ebx
push ebx
push dword [esi]
call fcn.0043b013
add esp, 0xc
cmp eax, edi
je 0x4358d2
test byte [ebp - 1], 0x80
je 0x4359f0
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x435948
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x435945
or dword [ebp + 0x10], edi
jmp 0x435948
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x435995
cmp eax, 0x10000
je 0x435981
cmp eax, 0x14000
je 0x435981
cmp eax, 0x20000
je 0x43598f
cmp eax, 0x24000
je 0x43598f
cmp eax, 0x40000
je 0x43597b
cmp eax, 0x44000
jne 0x435998
mov byte [ebp - 2], 1
jmp 0x435998
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x435998
mov byte [ebp - 2], 2
jmp 0x435998
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x4359f0
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x4359f0
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x435b4a
cmp eax, 0x80000000
je 0x435b11
cmp eax, ecx
jne 0x4359f0
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4359f0
cmp eax, 2
jbe 0x435bf2
cmp eax, 4
jbe 0x435ae3
cmp eax, 5
je 0x435bf2
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x47ce80]
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 + 0x47ce80]
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 0x435a62
test byte [ebp + 0x10], 8
je 0x435a62
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x47ce80]
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 0x435c71
test byte [ebp + 0x10], 1
je 0x435c71
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 0x435c5a
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.0042b358
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x47ce80]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004299ef
pop ecx
jmp 0x4357d8
push 2
push ebx
push ebx
push dword [esi]
call fcn.004373dc
add esp, 0x10
or eax, edx
je 0x435bf2
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004373dc
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x4358d2
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.00438c52
add esp, 0xc
cmp eax, 0xffffffff
je 0x4358d2
cmp eax, 2
je 0x435b96
cmp eax, 3
jne 0x435be4
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x435b96
mov byte [ebp - 2], 1
jmp 0x4359f0
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4359f0
cmp eax, 2
jbe 0x435bf2
cmp eax, 4
ja 0x4359e7
push 2
push ebx
push ebx
push dword [esi]
call fcn.004373dc
add esp, 0x10
or eax, edx
je 0x435bf2
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004373dc
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x4359f0
jmp 0x4358d2
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x435bbe
push dword [esi]
call fcn.00433f9f
pop ecx
call fcn.0042b332
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x435c73
cmp eax, 0xfeff
jne 0x435be4
push ebx
push 2
push dword [esi]
call fcn.0043b013
add esp, 0xc
cmp eax, 0xffffffff
je 0x4358d2
mov byte [ebp - 2], 2
jmp 0x4359f0
push ebx
push ebx
push dword [esi]
call fcn.0043b013
add esp, 0xc
jmp 0x435b88
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x435c12
dec eax
jne 0x4359f0
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x435c20
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.00431dfb
add esp, 0xc
cmp eax, 0xffffffff
je 0x435c46
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x435c20
jmp 0x4359f0
push dword [esi]
call fcn.00433f9f
pop ecx
call fcn.0042b332
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x435c73
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x47ce80]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret