Function at 0x42a6a1
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 0x42a6d0
mov dword [ebp - 0x2c], ebx
mov byte [ebp - 1], 0x10
jmp 0x42a6da
mov dword [ebp - 0x2c], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.0042c7b8
test eax, eax
pop ecx
je 0x42a6f5
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0041fe5f
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.0041b1db
test eax, eax
pop ecx
je 0x42a710
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0041fe5f
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x42a72d
test ecx, 0x74000
jne 0x42a729
cmp dword [ebp - 0x24], eax
je 0x42a72d
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x42a787
dec eax
je 0x42a771
dec eax
je 0x42a76c
call fcn.0041a569
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0041a556
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.0041ff5b
add esp, 0x14
jmp 0x42ad39
mov dword [ebp - 8], edx
jmp 0x42a78a
test cl, 8
je 0x42a77e
test ecx, 0x70000
jne 0x42a76c
mov dword [ebp - 8], 0x40000000
jmp 0x42a78a
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x42a7cb
sub eax, ecx
je 0x42a7c2
sub eax, ecx
je 0x42a7b9
sub eax, ecx
je 0x42a7b0
sub eax, 0x40
jne 0x42a746
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x42a7ce
mov dword [ebp - 0x10], 3
jmp 0x42a7ce
mov dword [ebp - 0x10], 2
jmp 0x42a7ce
mov dword [ebp - 0x10], 1
jmp 0x42a7ce
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 0x42a821
je 0x42a818
cmp eax, ebx
je 0x42a818
cmp eax, edi
je 0x42a80f
cmp eax, 0x200
je 0x42a894
cmp eax, 0x300
jne 0x42a746
mov dword [ebp - 0x14], 2
jmp 0x42a83e
mov dword [ebp - 0x14], 4
jmp 0x42a83e
mov dword [ebp - 0x14], 3
jmp 0x42a83e
cmp eax, 0x500
je 0x42a837
cmp eax, 0x600
je 0x42a894
cmp eax, edx
jne 0x42a746
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x42a862
mov ecx, dword [0x4401dc]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x42a862
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x42a87e
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x42a87e
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x42a887
or dword [ebp - 0xc], edi
test al, 0x20
je 0x42a89d
or dword [ebp - 0xc], 0x8000000
jmp 0x42a8a8
mov dword [ebp - 0x14], 5
jmp 0x42a83e
test al, 0x10
je 0x42a8a8
or dword [ebp - 0xc], 0x10000000
call fcn.0041e3ca
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x42a8ce
call fcn.0041a569
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0041a556
mov dword [eax], 0x18
jmp 0x42a95c
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 0x42a968
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x42a934
test byte [ebp + 0x10], 1
je 0x42a934
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 0x42a968
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x441000]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.0041a57c
pop ecx
call fcn.0041a556
mov eax, dword [eax]
jmp 0x42adf5
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x42a9b9
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x441000]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.0041a57c
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x42a95c
call fcn.0041a556
mov dword [eax], 0xd
jmp 0x42a95c
cmp eax, 2
jne 0x42a9c4
or byte [ebp - 1], 0x40
jmp 0x42a9cd
cmp eax, 3
jne 0x42a9cd
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.0041e199
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x441000]
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 + 0x441000]
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 0x42aaa2
test cl, 0x80
je 0x42ab72
test byte [ebp + 0x10], 2
je 0x42aaa2
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.00423cc3
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x42aa61
call fcn.0041a569
cmp dword [eax], 0x83
je 0x42aaa2
push dword [esi]
call fcn.0042535a
jmp 0x42a95b
push 1
lea eax, [ebp - 4]
push eax
push dword [esi]
mov byte [ebp - 4], bl
call fcn.00424bd7
add esp, 0xc
test eax, eax
jne 0x42aa92
cmp byte [ebp - 4], 0x1a
jne 0x42aa92
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.0042c548
add esp, 0xc
cmp eax, edi
je 0x42aa55
push ebx
push ebx
push dword [esi]
call fcn.00423cc3
add esp, 0xc
cmp eax, edi
je 0x42aa55
test byte [ebp - 1], 0x80
je 0x42ab72
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x42aaca
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x42aac7
or dword [ebp + 0x10], edi
jmp 0x42aaca
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x42ab17
cmp eax, 0x10000
je 0x42ab03
cmp eax, 0x14000
je 0x42ab03
cmp eax, 0x20000
je 0x42ab11
cmp eax, 0x24000
je 0x42ab11
cmp eax, 0x40000
je 0x42aafd
cmp eax, 0x44000
jne 0x42ab1a
mov byte [ebp - 2], 1
jmp 0x42ab1a
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x42ab1a
mov byte [ebp - 2], 2
jmp 0x42ab1a
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x42ab72
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x42ab72
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x42accc
cmp eax, 0x80000000
je 0x42ac93
cmp eax, ecx
jne 0x42ab72
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x42ab72
cmp eax, 2
jbe 0x42ad74
cmp eax, 4
jbe 0x42ac65
cmp eax, 5
je 0x42ad74
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x441000]
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 + 0x441000]
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 0x42abe4
test byte [ebp + 0x10], 8
je 0x42abe4
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x441000]
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 0x42adf3
test byte [ebp + 0x10], 1
je 0x42adf3
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 0x42addc
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.0041a57c
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x441000]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.0041e216
pop ecx
jmp 0x42a95b
push 2
push ebx
push ebx
push dword [esi]
call fcn.00428f0c
add esp, 0x10
or eax, edx
je 0x42ad74
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00428f0c
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x42aa55
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.00424bd7
add esp, 0xc
cmp eax, 0xffffffff
je 0x42aa55
cmp eax, 2
je 0x42ad18
cmp eax, 3
jne 0x42ad66
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x42ad18
mov byte [ebp - 2], 1
jmp 0x42ab72
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x42ab72
cmp eax, 2
jbe 0x42ad74
cmp eax, 4
ja 0x42ab69
push 2
push ebx
push ebx
push dword [esi]
call fcn.00428f0c
add esp, 0x10
or eax, edx
je 0x42ad74
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00428f0c
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x42ab72
jmp 0x42aa55
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x42ad40
push dword [esi]
call fcn.0042535a
pop ecx
call fcn.0041a556
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x42adf5
cmp eax, 0xfeff
jne 0x42ad66
push ebx
push 2
push dword [esi]
call fcn.00423cc3
add esp, 0xc
cmp eax, 0xffffffff
je 0x42aa55
mov byte [ebp - 2], 2
jmp 0x42ab72
push ebx
push ebx
push dword [esi]
call fcn.00423cc3
add esp, 0xc
jmp 0x42ad0a
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x42ad94
dec eax
jne 0x42ab72
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x42ada2
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.004243d7
add esp, 0xc
cmp eax, 0xffffffff
je 0x42adc8
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x42ada2
jmp 0x42ab72
push dword [esi]
call fcn.0042535a
pop ecx
call fcn.0041a556
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x42adf5
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x441000]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret