Function at 0x496b97
Capabilities:
Encrypt data using speck

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x34
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 - 0x34], 0xc
mov dword [ebp - 0x30], ebx
je 0x496bc6
mov dword [ebp - 0x2c], ebx
mov byte [ebp - 1], 0x10
jmp 0x496bd0
mov dword [ebp - 0x2c], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.0049bc8b
test eax, eax
pop ecx
je 0x496beb
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004758f8
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.0047e128
test eax, eax
pop ecx
je 0x496c06
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004758f8
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x496c23
test ecx, 0x74000
jne 0x496c1f
cmp dword [ebp - 0x24], eax
je 0x496c23
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocStringLen
je 0x496c7d
dec eax
je 0x496c67
dec eax
je 0x496c62
call fcn.0047a0c3
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0047a0b0
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.00475a2c
add esp, 0x14
jmp 0x49722f
mov dword [ebp - 8], edx
jmp 0x496c80
test cl, 8
je 0x496c74
test ecx, 0x70000
jne 0x496c62
mov dword [ebp - 8], 0x40000000
jmp 0x496c80
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x496cc1
sub eax, ecx
je 0x496cb8
sub eax, ecx
je 0x496caf
sub eax, ecx
je 0x496ca6
sub eax, 0x40
jne 0x496c3c
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x496cc4
mov dword [ebp - 0x10], 3
jmp 0x496cc4
mov dword [ebp - 0x10], 2
jmp 0x496cc4
mov dword [ebp - 0x10], 1
jmp 0x496cc4
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 0x496d17
je 0x496d0e
cmp eax, ebx
je 0x496d0e
cmp eax, edi
je 0x496d05
cmp eax, 0x200
je 0x496d8a
cmp eax, 0x300
jne 0x496c3c
mov dword [ebp - 0x14], 2
jmp 0x496d34
mov dword [ebp - 0x14], 4
jmp 0x496d34
mov dword [ebp - 0x14], 3
jmp 0x496d34
cmp eax, 0x500
je 0x496d2d
cmp eax, 0x600
je 0x496d8a
cmp eax, edx
jne 0x496c3c
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x496d58
mov ecx, dword [0x4c4750]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x496d58
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x496d74
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x496d74
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x496d7d
or dword [ebp - 0xc], edi
test al, 0x20
je 0x496d93
or dword [ebp - 0xc], 0x8000000
jmp 0x496d9e
mov dword [ebp - 0x14], 5
jmp 0x496d34
test al, 0x10
je 0x496d9e
or dword [ebp - 0xc], 0x10000000
call fcn.00496763
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x496dc4
call fcn.0047a0c3
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0047a0b0
mov dword [eax], 0x18
jmp 0x496e52
mov eax, dword [ebp + 8]
mov edi, dword [sym.imp.KERNEL32.dll_CreateFileA]
push ebx
push dword [ebp - 0xc]
mov dword [eax], 1
push dword [ebp - 0x14]
lea eax, [ebp - 0x34]
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 0x496e5e
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x496e2a
test byte [ebp + 0x10], 1
je 0x496e2a
and dword [ebp - 8], 0x7fffffff
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x34]
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 0x496e5e
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x4c50a0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.0047a0d6
pop ecx
call fcn.0047a0b0
mov eax, dword [eax]
jmp 0x4972eb
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x496eaf
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x4c50a0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.0047a0d6
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x496e52
call fcn.0047a0b0
mov dword [eax], 0xd
jmp 0x496e52
cmp eax, 2
jne 0x496eba
or byte [ebp - 1], 0x40
jmp 0x496ec3
cmp eax, 3
jne 0x496ec3
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.00496532
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x4c50a0]
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 + 0x4c50a0]
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 0x496f98
test cl, 0x80
je 0x497068
test byte [ebp + 0x10], 2
je 0x496f98
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.00484a66
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x496f57
call fcn.0047a0c3
cmp dword [eax], 0x83
je 0x496f98
push dword [esi]
call fcn.00483ac7
jmp 0x496e51
push 1
lea eax, [ebp - 4]
push eax
push dword [esi]
mov byte [ebp - 4], bl
call fcn.0048411c
add esp, 0xc
test eax, eax
jne 0x496f88
cmp byte [ebp - 4], 0x1a
jne 0x496f88
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.0049b8d0
add esp, 0xc
cmp eax, edi
je 0x496f4b
push ebx
push ebx
push dword [esi]
call fcn.00484a66
add esp, 0xc
cmp eax, edi
je 0x496f4b
test byte [ebp - 1], 0x80
je 0x497068
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x496fc0
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x496fbd
or dword [ebp + 0x10], edi
jmp 0x496fc0
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x49700d
cmp eax, 0x10000
je 0x496ff9
cmp eax, 0x14000
je 0x496ff9
cmp eax, 0x20000
je 0x497007
cmp eax, 0x24000
je 0x497007
cmp eax, 0x40000
je 0x496ff3
cmp eax, 0x44000
jne 0x497010
mov byte [ebp - 2], 1
jmp 0x497010
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x497010
mov byte [ebp - 2], 2
jmp 0x497010
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x497068
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x497068
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x4971c2
cmp eax, 0x80000000
je 0x497189
cmp eax, ecx
jne 0x497068
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x497068
cmp eax, 2
jbe 0x49726a
cmp eax, 4
jbe 0x49715b
cmp eax, 5
je 0x49726a
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x4c50a0]
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 + 0x4c50a0]
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 0x4970da
test byte [ebp + 0x10], 8
je 0x4970da
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x4c50a0]
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 0x4972e9
test byte [ebp + 0x10], 1
je 0x4972e9
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x34]
push 3
push eax
push dword [ebp - 0x10]
and edi, 0x7fffffff
push edi
push dword [ebp + 0xc]
call dword [sym.imp.KERNEL32.dll_CreateFileA]
cmp eax, 0xffffffff
jne 0x4972d2
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.0047a0d6
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x4c50a0]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004965af
pop ecx
jmp 0x496e51
push 2
push ebx
push ebx
push dword [esi]
call fcn.00494bcf
add esp, 0x10
or eax, edx
je 0x49726a
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00494bcf
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x496f4b
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.0048411c
add esp, 0xc
cmp eax, 0xffffffff
je 0x496f4b
cmp eax, 2
je 0x49720e
cmp eax, 3
jne 0x49725c
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x49720e
mov byte [ebp - 2], 1
jmp 0x497068
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x497068
cmp eax, 2
jbe 0x49726a
cmp eax, 4
ja 0x49705f
push 2
push ebx
push ebx
push dword [esi]
call fcn.00494bcf
add esp, 0x10
or eax, edx
je 0x49726a
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00494bcf
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x497068
jmp 0x496f4b
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x497236
push dword [esi]
call fcn.00483ac7
pop ecx
call fcn.0047a0b0
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x4972eb
cmp eax, 0xfeff
jne 0x49725c
push ebx
push 2
push dword [esi]
call fcn.00484a66
add esp, 0xc
cmp eax, 0xffffffff
je 0x496f4b
mov byte [ebp - 2], 2
jmp 0x497068
push ebx
push ebx
push dword [esi]
call fcn.00484a66
add esp, 0xc
jmp 0x497200
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x49728a
dec eax
jne 0x497068
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x497298
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.00495331
add esp, 0xc
cmp eax, 0xffffffff
je 0x4972be
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x497298
jmp 0x497068
push dword [esi]
call fcn.00483ac7
pop ecx
call fcn.0047a0b0
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x4972eb
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x4c50a0]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret