Function at 0x635b6b
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 0x635b9a
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x635ba4
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.006381ed
test eax, eax
pop ecx
je 0x635bbf
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0061c51f
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.0061dbab
test eax, eax
pop ecx
je 0x635bda
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0061c51f
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x635bf7
test ecx, 0x74000
jne 0x635bf3
cmp dword [ebp - 0x24], eax
je 0x635bf7
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, 0x80000000
je 0x635c51
dec eax
je 0x635c3b
dec eax
je 0x635c36
call fcn.00621222
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0062120f
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.0061c61b
add esp, 0x14
jmp 0x636204
mov dword [ebp - 8], edx
jmp 0x635c54
test cl, 8
je 0x635c48
test ecx, 0x70000
jne 0x635c36
mov dword [ebp - 8], 0x40000000
jmp 0x635c54
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x635c95
sub eax, ecx
je 0x635c8c
sub eax, ecx
je 0x635c83
sub eax, ecx
je 0x635c7a
sub eax, 0x40
jne 0x635c10
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x635c98
mov dword [ebp - 0x10], 3
jmp 0x635c98
mov dword [ebp - 0x10], 2
jmp 0x635c98
mov dword [ebp - 0x10], 1
jmp 0x635c98
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 0x635ceb
je 0x635ce2
cmp eax, ebx
je 0x635ce2
cmp eax, edi
je 0x635cd9
cmp eax, 0x200
je 0x635d5e
cmp eax, 0x300
jne 0x635c10
mov dword [ebp - 0x14], 2
jmp 0x635d08
mov dword [ebp - 0x14], 4
jmp 0x635d08
mov dword [ebp - 0x14], 3
jmp 0x635d08
cmp eax, 0x500
je 0x635d01
cmp eax, 0x600
je 0x635d5e
cmp eax, edx
jne 0x635c10
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x635d2c
mov ecx, dword [0x6a667c]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x635d2c
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x635d48
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x635d48
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x635d51
or dword [ebp - 0xc], edi
test al, 0x20
je 0x635d67
or dword [ebp - 0xc], 0x8000000
jmp 0x635d72
mov dword [ebp - 0x14], 5
jmp 0x635d08
test al, 0x10
je 0x635d72
or dword [ebp - 0xc], 0x10000000
call fcn.00633cdd
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x635d98
call fcn.00621222
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0062120f
mov dword [eax], 0x18
jmp 0x635e26
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 0x635e32
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x635dfe
test byte [ebp + 0x10], 1
je 0x635dfe
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 0x635e32
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x75cae0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.00621235
pop ecx
call fcn.0062120f
mov eax, dword [eax]
jmp 0x6362c0
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x635e83
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x75cae0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.00621235
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x635e26
call fcn.0062120f
mov dword [eax], 0xd
jmp 0x635e26
cmp eax, 2
jne 0x635e8e
or byte [ebp - 1], 0x40
jmp 0x635e97
cmp eax, 3
jne 0x635e97
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.00633aac
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x75cae0]
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 + 0x75cae0]
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 0x635f6d
test cl, 0x80
je 0x63603d
test byte [ebp + 0x10], 2
je 0x635f6d
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.0062c819
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x635f2b
call fcn.00621222
cmp dword [eax], 0x83
je 0x635f6d
push dword [esi]
call fcn.0062ab9b
jmp 0x635e25
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.0062ae75
add esp, 0xc
test eax, eax
jne 0x635f5d
cmp word [ebp - 0x2c], 0x1a
jne 0x635f5d
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.00637f7d
add esp, 0xc
cmp eax, edi
je 0x635f1f
push ebx
push ebx
push dword [esi]
call fcn.0062c819
add esp, 0xc
cmp eax, edi
je 0x635f1f
test byte [ebp - 1], 0x80
je 0x63603d
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x635f95
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x635f92
or dword [ebp + 0x10], edi
jmp 0x635f95
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x635fe2
cmp eax, 0x10000
je 0x635fce
cmp eax, 0x14000
je 0x635fce
cmp eax, 0x20000
je 0x635fdc
cmp eax, 0x24000
je 0x635fdc
cmp eax, 0x40000
je 0x635fc8
cmp eax, 0x44000
jne 0x635fe5
mov byte [ebp - 2], 1
jmp 0x635fe5
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x635fe5
mov byte [ebp - 2], 2
jmp 0x635fe5
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x63603d
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x63603d
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x636197
cmp eax, 0x80000000
je 0x63615e
cmp eax, ecx
jne 0x63603d
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x63603d
cmp eax, 2
jbe 0x63623f
cmp eax, 4
jbe 0x636130
cmp eax, 5
je 0x63623f
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x75cae0]
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 + 0x75cae0]
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 0x6360af
test byte [ebp + 0x10], 8
je 0x6360af
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x75cae0]
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 0x6362be
test byte [ebp + 0x10], 1
je 0x6362be
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 0x6362a7
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.00621235
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x75cae0]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.00633b29
pop ecx
jmp 0x635e25
push 2
push ebx
push ebx
push dword [esi]
call fcn.00633e7c
add esp, 0x10
or eax, edx
je 0x63623f
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00633e7c
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x635f1f
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.0062ae75
add esp, 0xc
cmp eax, 0xffffffff
je 0x635f1f
cmp eax, 2
je 0x6361e3
cmp eax, 3
jne 0x636231
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x6361e3
mov byte [ebp - 2], 1
jmp 0x63603d
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x63603d
cmp eax, 2
jbe 0x63623f
cmp eax, 4
ja 0x636034
push 2
push ebx
push ebx
push dword [esi]
call fcn.00633e7c
add esp, 0x10
or eax, edx
je 0x63623f
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00633e7c
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x63603d
jmp 0x635f1f
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x63620b
push dword [esi]
call fcn.0062ab9b
pop ecx
call fcn.0062120f
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x6362c0
cmp eax, 0xfeff
jne 0x636231
push ebx
push 2
push dword [esi]
call fcn.0062c819
add esp, 0xc
cmp eax, 0xffffffff
je 0x635f1f
mov byte [ebp - 2], 2
jmp 0x63603d
push ebx
push ebx
push dword [esi]
call fcn.0062c819
add esp, 0xc
jmp 0x6361d5
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x63625f
dec eax
jne 0x63603d
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x63626d
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.0062bc59
add esp, 0xc
cmp eax, 0xffffffff
je 0x636293
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x63626d
jmp 0x63603d
push dword [esi]
call fcn.0062ab9b
pop ecx
call fcn.0062120f
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x6362c0
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x75cae0]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret