Function at 0x490f5f
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 0x490f8e
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x490f98
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.0048c0cf
test eax, eax
pop ecx
je 0x490fb3
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.00478ade
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.0047b4d4
test eax, eax
pop ecx
je 0x490fce
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.00478ade
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x490feb
test ecx, 0x74000
jne 0x490fe7
cmp dword [ebp - 0x24], eax
je 0x490feb
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x491045
dec eax
je 0x49102f
dec eax
je 0x49102a
call fcn.0047fbea
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0047fbd7
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.00478bda
add esp, 0x14
jmp 0x4915f8
mov dword [ebp - 8], edx
jmp 0x491048
test cl, 8
je 0x49103c
test ecx, 0x70000
jne 0x49102a
mov dword [ebp - 8], 0x40000000
jmp 0x491048
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x491089
sub eax, ecx
je 0x491080
sub eax, ecx
je 0x491077
sub eax, ecx
je 0x49106e
sub eax, 0x40
jne 0x491004
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x49108c
mov dword [ebp - 0x10], 3
jmp 0x49108c
mov dword [ebp - 0x10], 2
jmp 0x49108c
mov dword [ebp - 0x10], 1
jmp 0x49108c
mov dword [ebp - 0x10], ebx
mov eax, dword [ebp + 0x10]
mov edx, 0x700
and eax, edx
mov ecx, 0x400
cmp eax, ecx
mov edi, pe_nt_image_headers32
jg 0x4910df
je 0x4910d6
cmp eax, ebx
je 0x4910d6
cmp eax, edi
je 0x4910cd
cmp eax, 0x200
je 0x491152
cmp eax, 0x300
jne 0x491004
mov dword [ebp - 0x14], 2
jmp 0x4910fc
mov dword [ebp - 0x14], 4
jmp 0x4910fc
mov dword [ebp - 0x14], 3
jmp 0x4910fc
cmp eax, 0x500
je 0x4910f5
cmp eax, 0x600
je 0x491152
cmp eax, edx
jne 0x491004
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x491120
mov ecx, dword [0x4dc1a0]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x491120
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x49113c
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x49113c
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x491145
or dword [ebp - 0xc], edi
test al, 0x20
je 0x49115b
or dword [ebp - 0xc], 0x8000000
jmp 0x491166
mov dword [ebp - 0x14], 5
jmp 0x4910fc
test al, 0x10
je 0x491166
or dword [ebp - 0xc], 0x10000000
call fcn.0047c421
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x49118c
call fcn.0047fbea
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0047fbd7
mov dword [eax], 0x18
jmp 0x49121a
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 0x491226
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x4911f2
test byte [ebp + 0x10], 1
je 0x4911f2
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 0x491226
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x4dd480]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.DLL_GetLastError]
push eax
call fcn.0047fbfd
pop ecx
call fcn.0047fbd7
mov eax, dword [eax]
jmp 0x4916b4
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.DLL_GetFileType]
cmp eax, ebx
jne 0x491277
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x4dd480]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.DLL_GetLastError]
mov esi, eax
push esi
call fcn.0047fbfd
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.DLL_CloseHandle]
cmp esi, ebx
jne 0x49121a
call fcn.0047fbd7
mov dword [eax], 0xd
jmp 0x49121a
cmp eax, 2
jne 0x491282
or byte [ebp - 1], 0x40
jmp 0x49128b
cmp eax, 3
jne 0x49128b
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.0047c1f0
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x4dd480]
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 + 0x4dd480]
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 0x491361
test cl, 0x80
je 0x491431
test byte [ebp + 0x10], 2
je 0x491361
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.00484ec8
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x49131f
call fcn.0047fbea
cmp dword [eax], 0x83
je 0x491361
push dword [esi]
call fcn.00484aa7
jmp 0x491219
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.00485e91
add esp, 0xc
test eax, eax
jne 0x491351
cmp word [ebp - 0x2c], 0x1a
jne 0x491351
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.0047b7b3
add esp, 0xc
cmp eax, edi
je 0x491313
push ebx
push ebx
push dword [esi]
call fcn.00484ec8
add esp, 0xc
cmp eax, edi
je 0x491313
test byte [ebp - 1], 0x80
je 0x491431
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x491389
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x491386
or dword [ebp + 0x10], edi
jmp 0x491389
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x4913d6
cmp eax, 0x10000
je 0x4913c2
cmp eax, 0x14000
je 0x4913c2
cmp eax, 0x20000
je 0x4913d0
cmp eax, 0x24000
je 0x4913d0
cmp eax, 0x40000
je 0x4913bc
cmp eax, 0x44000
jne 0x4913d9
mov byte [ebp - 2], 1
jmp 0x4913d9
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x4913d9
mov byte [ebp - 2], 2
jmp 0x4913d9
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x491431
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x491431
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x49158b
cmp eax, 0x80000000
je 0x491552
cmp eax, ecx
jne 0x491431
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x491431
cmp eax, 2
jbe 0x491633
cmp eax, 4
jbe 0x491524
cmp eax, 5
je 0x491633
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x4dd480]
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 + 0x4dd480]
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 0x4914a3
test byte [ebp + 0x10], 8
je 0x4914a3
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x4dd480]
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 0x4916b2
test byte [ebp + 0x10], 1
je 0x4916b2
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 0x49169b
call dword [sym.imp.KERNEL32.DLL_GetLastError]
push eax
call fcn.0047fbfd
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x4dd480]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.0047c26d
pop ecx
jmp 0x491219
push 2
push ebx
push ebx
push dword [esi]
call fcn.0048c103
add esp, 0x10
or eax, edx
je 0x491633
push ebx
push ebx
push ebx
push dword [esi]
call fcn.0048c103
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x491313
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.00485e91
add esp, 0xc
cmp eax, 0xffffffff
je 0x491313
cmp eax, 2
je 0x4915d7
cmp eax, 3
jne 0x491625
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x4915d7
mov byte [ebp - 2], 1
jmp 0x491431
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x491431
cmp eax, 2
jbe 0x491633
cmp eax, 4
ja 0x491428
push 2
push ebx
push ebx
push dword [esi]
call fcn.0048c103
add esp, 0x10
or eax, edx
je 0x491633
push ebx
push ebx
push ebx
push dword [esi]
call fcn.0048c103
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x491431
jmp 0x491313
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x4915ff
push dword [esi]
call fcn.00484aa7
pop ecx
call fcn.0047fbd7
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x4916b4
cmp eax, 0xfeff
jne 0x491625
push ebx
push 2
push dword [esi]
call fcn.00484ec8
add esp, 0xc
cmp eax, 0xffffffff
je 0x491313
mov byte [ebp - 2], 2
jmp 0x491431
push ebx
push ebx
push dword [esi]
call fcn.00484ec8
add esp, 0xc
jmp 0x4915c9
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x491653
dec eax
jne 0x491431
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x491661
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.0048bf37
add esp, 0xc
cmp eax, 0xffffffff
je 0x491687
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x491661
jmp 0x491431
push dword [esi]
call fcn.00484aa7
pop ecx
call fcn.0047fbd7
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x4916b4
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x4dd480]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret