Function at 0x4c3639
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 0x4c3668
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x4c3672
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004c605a
test eax, eax
pop ecx
je 0x4c368d
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004ab471
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004af4a6
test eax, eax
pop ecx
je 0x4c36a8
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004ab471
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x4c36c5
test ecx, 0x74000
jne 0x4c36c1
cmp dword [ebp - 0x24], eax
je 0x4c36c5
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, Ordinal_4
je 0x4c371f
dec eax
je 0x4c3709
dec eax
je 0x4c3704
call fcn.004abece
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004abebb
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004ab56d
add esp, 0x14
jmp 0x4c3cd2
mov dword [ebp - 8], edx
jmp 0x4c3722
test cl, 8
je 0x4c3716
test ecx, 0x70000
jne 0x4c3704
mov dword [ebp - 8], 0x40000000
jmp 0x4c3722
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x4c3763
sub eax, ecx
je 0x4c375a
sub eax, ecx
je 0x4c3751
sub eax, ecx
je 0x4c3748
sub eax, 0x40
jne 0x4c36de
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x4c3766
mov dword [ebp - 0x10], 3
jmp 0x4c3766
mov dword [ebp - 0x10], 2
jmp 0x4c3766
mov dword [ebp - 0x10], 1
jmp 0x4c3766
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 0x4c37b9
je 0x4c37b0
cmp eax, ebx
je 0x4c37b0
cmp eax, edi
je 0x4c37a7
cmp eax, 0x200
je 0x4c382c
cmp eax, 0x300
jne 0x4c36de
mov dword [ebp - 0x14], 2
jmp 0x4c37d6
mov dword [ebp - 0x14], 4
jmp 0x4c37d6
mov dword [ebp - 0x14], 3
jmp 0x4c37d6
cmp eax, 0x500
je 0x4c37cf
cmp eax, 0x600
je 0x4c382c
cmp eax, edx
jne 0x4c36de
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x4c37fa
mov ecx, dword [0x4fc488]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x4c37fa
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x4c3816
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x4c3816
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x4c381f
or dword [ebp - 0xc], edi
test al, 0x20
je 0x4c3835
or dword [ebp - 0xc], 0x8000000
jmp 0x4c3840
mov dword [ebp - 0x14], 5
jmp 0x4c37d6
test al, 0x10
je 0x4c3840
or dword [ebp - 0xc], 0x10000000
call fcn.004c239d
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x4c3866
call fcn.004abece
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004abebb
mov dword [eax], 0x18
jmp 0x4c38f4
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 0x4c3900
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x4c38cc
test byte [ebp + 0x10], 1
je 0x4c38cc
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 0x4c3900
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x4fdc60]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004abee1
pop ecx
call fcn.004abebb
mov eax, dword [eax]
jmp 0x4c3d8e
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x4c3951
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x4fdc60]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.004abee1
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x4c38f4
call fcn.004abebb
mov dword [eax], 0xd
jmp 0x4c38f4
cmp eax, 2
jne 0x4c395c
or byte [ebp - 1], 0x40
jmp 0x4c3965
cmp eax, 3
jne 0x4c3965
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004c216c
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x4fdc60]
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 + 0x4fdc60]
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 0x4c3a3b
test cl, 0x80
je 0x4c3b0b
test byte [ebp + 0x10], 2
je 0x4c3a3b
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004b5aaa
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x4c39f9
call fcn.004abece
cmp dword [eax], 0x83
je 0x4c3a3b
push dword [esi]
call fcn.004b65f4
jmp 0x4c38f3
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.004bb693
add esp, 0xc
test eax, eax
jne 0x4c3a2b
cmp word [ebp - 0x2c], 0x1a
jne 0x4c3a2b
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004c5dea
add esp, 0xc
cmp eax, edi
je 0x4c39ed
push ebx
push ebx
push dword [esi]
call fcn.004b5aaa
add esp, 0xc
cmp eax, edi
je 0x4c39ed
test byte [ebp - 1], 0x80
je 0x4c3b0b
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x4c3a63
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x4c3a60
or dword [ebp + 0x10], edi
jmp 0x4c3a63
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x4c3ab0
cmp eax, 0x10000
je 0x4c3a9c
cmp eax, 0x14000
je 0x4c3a9c
cmp eax, 0x20000
je 0x4c3aaa
cmp eax, 0x24000
je 0x4c3aaa
cmp eax, 0x40000
je 0x4c3a96
cmp eax, 0x44000
jne 0x4c3ab3
mov byte [ebp - 2], 1
jmp 0x4c3ab3
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x4c3ab3
mov byte [ebp - 2], 2
jmp 0x4c3ab3
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x4c3b0b
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x4c3b0b
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x4c3c65
cmp eax, 0x80000000
je 0x4c3c2c
cmp eax, ecx
jne 0x4c3b0b
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4c3b0b
cmp eax, 2
jbe 0x4c3d0d
cmp eax, 4
jbe 0x4c3bfe
cmp eax, 5
je 0x4c3d0d
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x4fdc60]
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 + 0x4fdc60]
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 0x4c3b7d
test byte [ebp + 0x10], 8
je 0x4c3b7d
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x4fdc60]
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 0x4c3d8c
test byte [ebp + 0x10], 1
je 0x4c3d8c
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 0x4c3d75
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004abee1
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x4fdc60]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004c21e9
pop ecx
jmp 0x4c38f3
push 2
push ebx
push ebx
push dword [esi]
call fcn.004ba430
add esp, 0x10
or eax, edx
je 0x4c3d0d
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004ba430
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x4c39ed
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004bb693
add esp, 0xc
cmp eax, 0xffffffff
je 0x4c39ed
cmp eax, 2
je 0x4c3cb1
cmp eax, 3
jne 0x4c3cff
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x4c3cb1
mov byte [ebp - 2], 1
jmp 0x4c3b0b
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4c3b0b
cmp eax, 2
jbe 0x4c3d0d
cmp eax, 4
ja 0x4c3b02
push 2
push ebx
push ebx
push dword [esi]
call fcn.004ba430
add esp, 0x10
or eax, edx
je 0x4c3d0d
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004ba430
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x4c3b0b
jmp 0x4c39ed
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x4c3cd9
push dword [esi]
call fcn.004b65f4
pop ecx
call fcn.004abebb
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x4c3d8e
cmp eax, 0xfeff
jne 0x4c3cff
push ebx
push 2
push dword [esi]
call fcn.004b5aaa
add esp, 0xc
cmp eax, 0xffffffff
je 0x4c39ed
mov byte [ebp - 2], 2
jmp 0x4c3b0b
push ebx
push ebx
push dword [esi]
call fcn.004b5aaa
add esp, 0xc
jmp 0x4c3ca3
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x4c3d2d
dec eax
jne 0x4c3b0b
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x4c3d3b
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.004b7d1e
add esp, 0xc
cmp eax, 0xffffffff
je 0x4c3d61
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x4c3d3b
jmp 0x4c3b0b
push dword [esi]
call fcn.004b65f4
pop ecx
call fcn.004abebb
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x4c3d8e
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x4fdc60]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret