Function at 0x509da7
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 0x509dd6
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x509de0
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004f84a1
test eax, eax
pop ecx
je 0x509dfb
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004efd2e
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004f5c84
test eax, eax
pop ecx
je 0x509e16
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004efd2e
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x509e33
test ecx, 0x74000
jne 0x509e2f
cmp dword [ebp - 0x24], eax
je 0x509e33
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x509e8d
dec eax
je 0x509e77
dec eax
je 0x509e72
call fcn.004f7383
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f7370
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004efe2a
add esp, 0x14
jmp 0x50a440
mov dword [ebp - 8], edx
jmp 0x509e90
test cl, 8
je 0x509e84
test ecx, 0x70000
jne 0x509e72
mov dword [ebp - 8], 0x40000000
jmp 0x509e90
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x509ed1
sub eax, ecx
je 0x509ec8
sub eax, ecx
je 0x509ebf
sub eax, ecx
je 0x509eb6
sub eax, 0x40
jne 0x509e4c
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x509ed4
mov dword [ebp - 0x10], 3
jmp 0x509ed4
mov dword [ebp - 0x10], 2
jmp 0x509ed4
mov dword [ebp - 0x10], 1
jmp 0x509ed4
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 0x509f27
je 0x509f1e
cmp eax, ebx
je 0x509f1e
cmp eax, edi
je 0x509f15
cmp eax, 0x200
je 0x509f9a
cmp eax, 0x300
jne 0x509e4c
mov dword [ebp - 0x14], 2
jmp 0x509f44
mov dword [ebp - 0x14], 4
jmp 0x509f44
mov dword [ebp - 0x14], 3
jmp 0x509f44
cmp eax, 0x500
je 0x509f3d
cmp eax, 0x600
je 0x509f9a
cmp eax, edx
jne 0x509e4c
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x509f68
mov ecx, dword [0x55fbd4]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x509f68
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x509f84
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x509f84
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x509f8d
or dword [ebp - 0xc], edi
test al, 0x20
je 0x509fa3
or dword [ebp - 0xc], 0x8000000
jmp 0x509fae
mov dword [ebp - 0x14], 5
jmp 0x509f44
test al, 0x10
je 0x509fae
or dword [ebp - 0xc], 0x10000000
call fcn.004f312b
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x509fd4
call fcn.004f7383
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f7370
mov dword [eax], 0x18
jmp 0x50a062
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 0x50a06e
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x50a03a
test byte [ebp + 0x10], 1
je 0x50a03a
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 0x50a06e
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x560fc0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f7396
pop ecx
call fcn.004f7370
mov eax, dword [eax]
jmp 0x50a4fc
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x50a0bf
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x560fc0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.004f7396
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x50a062
call fcn.004f7370
mov dword [eax], 0xd
jmp 0x50a062
cmp eax, 2
jne 0x50a0ca
or byte [ebp - 1], 0x40
jmp 0x50a0d3
cmp eax, 3
jne 0x50a0d3
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004f2efa
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x560fc0]
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 + 0x560fc0]
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 0x50a1a9
test cl, 0x80
je 0x50a279
test byte [ebp + 0x10], 2
je 0x50a1a9
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004fd82c
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x50a167
call fcn.004f7383
cmp dword [eax], 0x83
je 0x50a1a9
push dword [esi]
call fcn.004fd40b
jmp 0x50a061
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.004fe7f5
add esp, 0xc
test eax, eax
jne 0x50a199
cmp word [ebp - 0x2c], 0x1a
jne 0x50a199
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004f27d4
add esp, 0xc
cmp eax, edi
je 0x50a15b
push ebx
push ebx
push dword [esi]
call fcn.004fd82c
add esp, 0xc
cmp eax, edi
je 0x50a15b
test byte [ebp - 1], 0x80
je 0x50a279
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x50a1d1
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x50a1ce
or dword [ebp + 0x10], edi
jmp 0x50a1d1
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x50a21e
cmp eax, 0x10000
je 0x50a20a
cmp eax, 0x14000
je 0x50a20a
cmp eax, 0x20000
je 0x50a218
cmp eax, 0x24000
je 0x50a218
cmp eax, 0x40000
je 0x50a204
cmp eax, 0x44000
jne 0x50a221
mov byte [ebp - 2], 1
jmp 0x50a221
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x50a221
mov byte [ebp - 2], 2
jmp 0x50a221
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x50a279
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x50a279
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x50a3d3
cmp eax, 0x80000000
je 0x50a39a
cmp eax, ecx
jne 0x50a279
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x50a279
cmp eax, 2
jbe 0x50a47b
cmp eax, 4
jbe 0x50a36c
cmp eax, 5
je 0x50a47b
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x560fc0]
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 + 0x560fc0]
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 0x50a2eb
test byte [ebp + 0x10], 8
je 0x50a2eb
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x560fc0]
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 0x50a4fa
test byte [ebp + 0x10], 1
je 0x50a4fa
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 0x50a4e3
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f7396
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x560fc0]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004f2f77
pop ecx
jmp 0x50a061
push 2
push ebx
push ebx
push dword [esi]
call fcn.00503b1e
add esp, 0x10
or eax, edx
je 0x50a47b
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00503b1e
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x50a15b
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004fe7f5
add esp, 0xc
cmp eax, 0xffffffff
je 0x50a15b
cmp eax, 2
je 0x50a41f
cmp eax, 3
jne 0x50a46d
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x50a41f
mov byte [ebp - 2], 1
jmp 0x50a279
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x50a279
cmp eax, 2
jbe 0x50a47b
cmp eax, 4
ja 0x50a270
push 2
push ebx
push ebx
push dword [esi]
call fcn.00503b1e
add esp, 0x10
or eax, edx
je 0x50a47b
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00503b1e
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x50a279
jmp 0x50a15b
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x50a447
push dword [esi]
call fcn.004fd40b
pop ecx
call fcn.004f7370
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x50a4fc
cmp eax, 0xfeff
jne 0x50a46d
push ebx
push 2
push dword [esi]
call fcn.004fd82c
add esp, 0xc
cmp eax, 0xffffffff
je 0x50a15b
mov byte [ebp - 2], 2
jmp 0x50a279
push ebx
push ebx
push dword [esi]
call fcn.004fd82c
add esp, 0xc
jmp 0x50a411
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x50a49b
dec eax
jne 0x50a279
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x50a4a9
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.00503a42
add esp, 0xc
cmp eax, 0xffffffff
je 0x50a4cf
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x50a4a9
jmp 0x50a279
push dword [esi]
call fcn.004fd40b
pop ecx
call fcn.004f7370
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x50a4fc
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x560fc0]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret