Function at 0x4b53d0
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 0x4b53ff
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x4b5409
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004b865f
test eax, eax
pop ecx
je 0x4b5424
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0049841b
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004a8cf4
test eax, eax
pop ecx
je 0x4b543f
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0049841b
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x4b545c
test ecx, 0x74000
jne 0x4b5458
cmp dword [ebp - 0x24], eax
je 0x4b545c
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocStringLen
je 0x4b54b6
dec eax
je 0x4b54a0
dec eax
je 0x4b549b
call fcn.0049d031
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0049d01e
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.00498517
add esp, 0x14
jmp 0x4b5a69
mov dword [ebp - 8], edx
jmp 0x4b54b9
test cl, 8
je 0x4b54ad
test ecx, 0x70000
jne 0x4b549b
mov dword [ebp - 8], 0x40000000
jmp 0x4b54b9
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x4b54fa
sub eax, ecx
je 0x4b54f1
sub eax, ecx
je 0x4b54e8
sub eax, ecx
je 0x4b54df
sub eax, 0x40
jne 0x4b5475
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x4b54fd
mov dword [ebp - 0x10], 3
jmp 0x4b54fd
mov dword [ebp - 0x10], 2
jmp 0x4b54fd
mov dword [ebp - 0x10], 1
jmp 0x4b54fd
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 0x4b5550
je 0x4b5547
cmp eax, ebx
je 0x4b5547
cmp eax, edi
je 0x4b553e
cmp eax, 0x200
je 0x4b55c3
cmp eax, 0x300
jne 0x4b5475
mov dword [ebp - 0x14], 2
jmp 0x4b556d
mov dword [ebp - 0x14], 4
jmp 0x4b556d
mov dword [ebp - 0x14], 3
jmp 0x4b556d
cmp eax, 0x500
je 0x4b5566
cmp eax, 0x600
je 0x4b55c3
cmp eax, edx
jne 0x4b5475
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x4b5591
mov ecx, dword [0x528e58]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x4b5591
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x4b55ad
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x4b55ad
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x4b55b6
or dword [ebp - 0xc], edi
test al, 0x20
je 0x4b55cc
or dword [ebp - 0xc], 0x8000000
jmp 0x4b55d7
mov dword [ebp - 0x14], 5
jmp 0x4b556d
test al, 0x10
je 0x4b55d7
or dword [ebp - 0xc], 0x10000000
call fcn.004b5f7c
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x4b55fd
call fcn.0049d031
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0049d01e
mov dword [eax], 0x18
jmp 0x4b568b
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 0x4b5697
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x4b5663
test byte [ebp + 0x10], 1
je 0x4b5663
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 0x4b5697
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x52b220]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.DLL_GetLastError]
push eax
call fcn.0049d044
pop ecx
call fcn.0049d01e
mov eax, dword [eax]
jmp 0x4b5b25
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.DLL_GetFileType]
cmp eax, ebx
jne 0x4b56e8
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x52b220]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.DLL_GetLastError]
mov esi, eax
push esi
call fcn.0049d044
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.DLL_CloseHandle]
cmp esi, ebx
jne 0x4b568b
call fcn.0049d01e
mov dword [eax], 0xd
jmp 0x4b568b
cmp eax, 2
jne 0x4b56f3
or byte [ebp - 1], 0x40
jmp 0x4b56fc
cmp eax, 3
jne 0x4b56fc
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004b5d4b
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x52b220]
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 + 0x52b220]
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 0x4b57d2
test cl, 0x80
je 0x4b58a2
test byte [ebp + 0x10], 2
je 0x4b57d2
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004ae465
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x4b5790
call fcn.0049d031
cmp dword [eax], 0x83
je 0x4b57d2
push dword [esi]
call fcn.004adebe
jmp 0x4b568a
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.004ad7d3
add esp, 0xc
test eax, eax
jne 0x4b57c2
cmp word [ebp - 0x2c], 0x1a
jne 0x4b57c2
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004b83ef
add esp, 0xc
cmp eax, edi
je 0x4b5784
push ebx
push ebx
push dword [esi]
call fcn.004ae465
add esp, 0xc
cmp eax, edi
je 0x4b5784
test byte [ebp - 1], 0x80
je 0x4b58a2
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x4b57fa
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x4b57f7
or dword [ebp + 0x10], edi
jmp 0x4b57fa
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x4b5847
cmp eax, 0x10000
je 0x4b5833
cmp eax, 0x14000
je 0x4b5833
cmp eax, 0x20000
je 0x4b5841
cmp eax, 0x24000
je 0x4b5841
cmp eax, 0x40000
je 0x4b582d
cmp eax, 0x44000
jne 0x4b584a
mov byte [ebp - 2], 1
jmp 0x4b584a
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x4b584a
mov byte [ebp - 2], 2
jmp 0x4b584a
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x4b58a2
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x4b58a2
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x4b59fc
cmp eax, 0x80000000
je 0x4b59c3
cmp eax, ecx
jne 0x4b58a2
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4b58a2
cmp eax, 2
jbe 0x4b5aa4
cmp eax, 4
jbe 0x4b5995
cmp eax, 5
je 0x4b5aa4
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x52b220]
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 + 0x52b220]
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 0x4b5914
test byte [ebp + 0x10], 8
je 0x4b5914
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x52b220]
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 0x4b5b23
test byte [ebp + 0x10], 1
je 0x4b5b23
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 0x4b5b0c
call dword [sym.imp.KERNEL32.DLL_GetLastError]
push eax
call fcn.0049d044
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x52b220]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004b5dc8
pop ecx
jmp 0x4b568a
push 2
push ebx
push ebx
push dword [esi]
call fcn.004b2be7
add esp, 0x10
or eax, edx
je 0x4b5aa4
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004b2be7
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x4b5784
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004ad7d3
add esp, 0xc
cmp eax, 0xffffffff
je 0x4b5784
cmp eax, 2
je 0x4b5a48
cmp eax, 3
jne 0x4b5a96
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x4b5a48
mov byte [ebp - 2], 1
jmp 0x4b58a2
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4b58a2
cmp eax, 2
jbe 0x4b5aa4
cmp eax, 4
ja 0x4b5899
push 2
push ebx
push ebx
push dword [esi]
call fcn.004b2be7
add esp, 0x10
or eax, edx
je 0x4b5aa4
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004b2be7
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x4b58a2
jmp 0x4b5784
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x4b5a70
push dword [esi]
call fcn.004adebe
pop ecx
call fcn.0049d01e
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x4b5b25
cmp eax, 0xfeff
jne 0x4b5a96
push ebx
push 2
push dword [esi]
call fcn.004ae465
add esp, 0xc
cmp eax, 0xffffffff
je 0x4b5784
mov byte [ebp - 2], 2
jmp 0x4b58a2
push ebx
push ebx
push dword [esi]
call fcn.004ae465
add esp, 0xc
jmp 0x4b5a3a
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x4b5ac4
dec eax
jne 0x4b58a2
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x4b5ad2
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.004b104a
add esp, 0xc
cmp eax, 0xffffffff
je 0x4b5af8
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x4b5ad2
jmp 0x4b58a2
push dword [esi]
call fcn.004adebe
pop ecx
call fcn.0049d01e
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x4b5b25
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x52b220]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret