Function at 0x4c940e
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 0x4c943d
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x4c9447
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004cc833
test eax, eax
pop ecx
je 0x4c9462
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004afcde
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004b524b
test eax, eax
pop ecx
je 0x4c947d
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004afcde
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x4c949a
test ecx, 0x74000
jne 0x4c9496
cmp dword [ebp - 0x24], eax
je 0x4c949a
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, closesocket
je 0x4c94f4
dec eax
je 0x4c94de
dec eax
je 0x4c94d9
call fcn.004b490e
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004b48fb
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004afdda
add esp, 0x14
jmp 0x4c9aa7
mov dword [ebp - 8], edx
jmp 0x4c94f7
test cl, 8
je 0x4c94eb
test ecx, 0x70000
jne 0x4c94d9
mov dword [ebp - 8], 0x40000000
jmp 0x4c94f7
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x4c9538
sub eax, ecx
je 0x4c952f
sub eax, ecx
je 0x4c9526
sub eax, ecx
je 0x4c951d
sub eax, 0x40
jne 0x4c94b3
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x4c953b
mov dword [ebp - 0x10], 3
jmp 0x4c953b
mov dword [ebp - 0x10], 2
jmp 0x4c953b
mov dword [ebp - 0x10], 1
jmp 0x4c953b
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 0x4c958e
je 0x4c9585
cmp eax, ebx
je 0x4c9585
cmp eax, edi
je 0x4c957c
cmp eax, 0x200
je 0x4c9601
cmp eax, 0x300
jne 0x4c94b3
mov dword [ebp - 0x14], 2
jmp 0x4c95ab
mov dword [ebp - 0x14], 4
jmp 0x4c95ab
mov dword [ebp - 0x14], 3
jmp 0x4c95ab
cmp eax, 0x500
je 0x4c95a4
cmp eax, 0x600
je 0x4c9601
cmp eax, edx
jne 0x4c94b3
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x4c95cf
mov ecx, dword [0x659ac4]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x4c95cf
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x4c95eb
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x4c95eb
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x4c95f4
or dword [ebp - 0xc], edi
test al, 0x20
je 0x4c960a
or dword [ebp - 0xc], 0x8000000
jmp 0x4c9615
mov dword [ebp - 0x14], 5
jmp 0x4c95ab
test al, 0x10
je 0x4c9615
or dword [ebp - 0xc], 0x10000000
call fcn.004c861f
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x4c963b
call fcn.004b490e
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004b48fb
mov dword [eax], 0x18
jmp 0x4c96c9
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 0x4c96d5
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x4c96a1
test byte [ebp + 0x10], 1
je 0x4c96a1
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 0x4c96d5
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x65bd60]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004b4921
pop ecx
call fcn.004b48fb
mov eax, dword [eax]
jmp 0x4c9b63
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x4c9726
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x65bd60]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.004b4921
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x4c96c9
call fcn.004b48fb
mov dword [eax], 0xd
jmp 0x4c96c9
cmp eax, 2
jne 0x4c9731
or byte [ebp - 1], 0x40
jmp 0x4c973a
cmp eax, 3
jne 0x4c973a
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004c83ee
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x65bd60]
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 + 0x65bd60]
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 0x4c9810
test cl, 0x80
je 0x4c98e0
test byte [ebp + 0x10], 2
je 0x4c9810
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004c109f
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x4c97ce
call fcn.004b490e
cmp dword [eax], 0x83
je 0x4c9810
push dword [esi]
call fcn.004c12d5
jmp 0x4c96c8
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.004c5f83
add esp, 0xc
test eax, eax
jne 0x4c9800
cmp word [ebp - 0x2c], 0x1a
jne 0x4c9800
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004cc5c3
add esp, 0xc
cmp eax, edi
je 0x4c97c2
push ebx
push ebx
push dword [esi]
call fcn.004c109f
add esp, 0xc
cmp eax, edi
je 0x4c97c2
test byte [ebp - 1], 0x80
je 0x4c98e0
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x4c9838
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x4c9835
or dword [ebp + 0x10], edi
jmp 0x4c9838
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x4c9885
cmp eax, 0x10000
je 0x4c9871
cmp eax, 0x14000
je 0x4c9871
cmp eax, 0x20000
je 0x4c987f
cmp eax, 0x24000
je 0x4c987f
cmp eax, 0x40000
je 0x4c986b
cmp eax, 0x44000
jne 0x4c9888
mov byte [ebp - 2], 1
jmp 0x4c9888
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x4c9888
mov byte [ebp - 2], 2
jmp 0x4c9888
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x4c98e0
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x4c98e0
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x4c9a3a
cmp eax, 0x80000000
je 0x4c9a01
cmp eax, ecx
jne 0x4c98e0
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4c98e0
cmp eax, 2
jbe 0x4c9ae2
cmp eax, 4
jbe 0x4c99d3
cmp eax, 5
je 0x4c9ae2
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x65bd60]
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 + 0x65bd60]
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 0x4c9952
test byte [ebp + 0x10], 8
je 0x4c9952
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x65bd60]
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 0x4c9b61
test byte [ebp + 0x10], 1
je 0x4c9b61
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 0x4c9b4a
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004b4921
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x65bd60]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004c846b
pop ecx
jmp 0x4c96c8
push 2
push ebx
push ebx
push dword [esi]
call fcn.004c6d84
add esp, 0x10
or eax, edx
je 0x4c9ae2
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004c6d84
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x4c97c2
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004c5f83
add esp, 0xc
cmp eax, 0xffffffff
je 0x4c97c2
cmp eax, 2
je 0x4c9a86
cmp eax, 3
jne 0x4c9ad4
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x4c9a86
mov byte [ebp - 2], 1
jmp 0x4c98e0
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4c98e0
cmp eax, 2
jbe 0x4c9ae2
cmp eax, 4
ja 0x4c98d7
push 2
push ebx
push ebx
push dword [esi]
call fcn.004c6d84
add esp, 0x10
or eax, edx
je 0x4c9ae2
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004c6d84
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x4c98e0
jmp 0x4c97c2
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x4c9aae
push dword [esi]
call fcn.004c12d5
pop ecx
call fcn.004b48fb
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x4c9b63
cmp eax, 0xfeff
jne 0x4c9ad4
push ebx
push 2
push dword [esi]
call fcn.004c109f
add esp, 0xc
cmp eax, 0xffffffff
je 0x4c97c2
mov byte [ebp - 2], 2
jmp 0x4c98e0
push ebx
push ebx
push dword [esi]
call fcn.004c109f
add esp, 0xc
jmp 0x4c9a78
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x4c9b02
dec eax
jne 0x4c98e0
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x4c9b10
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.004c0b90
add esp, 0xc
cmp eax, 0xffffffff
je 0x4c9b36
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x4c9b10
jmp 0x4c98e0
push dword [esi]
call fcn.004c12d5
pop ecx
call fcn.004b48fb
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x4c9b63
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x65bd60]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret