Function at 0x500f31
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 0x500f60
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x500f6a
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.00510c6b
test eax, eax
pop ecx
je 0x500f85
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004fb76e
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004fada4
test eax, eax
pop ecx
je 0x500fa0
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004fb76e
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x500fbd
test ecx, 0x74000
jne 0x500fb9
cmp dword [ebp - 0x24], eax
je 0x500fbd
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocStringLen
je 0x501017
dec eax
je 0x501001
dec eax
je 0x500ffc
call fcn.004fdeb7
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004fdea4
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004fb86a
add esp, 0x14
jmp 0x5015ca
mov dword [ebp - 8], edx
jmp 0x50101a
test cl, 8
je 0x50100e
test ecx, 0x70000
jne 0x500ffc
mov dword [ebp - 8], 0x40000000
jmp 0x50101a
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x50105b
sub eax, ecx
je 0x501052
sub eax, ecx
je 0x501049
sub eax, ecx
je 0x501040
sub eax, 0x40
jne 0x500fd6
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x50105e
mov dword [ebp - 0x10], 3
jmp 0x50105e
mov dword [ebp - 0x10], 2
jmp 0x50105e
mov dword [ebp - 0x10], 1
jmp 0x50105e
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 0x5010b1
je 0x5010a8
cmp eax, ebx
je 0x5010a8
cmp eax, edi
je 0x50109f
cmp eax, 0x200
je 0x501124
cmp eax, 0x300
jne 0x500fd6
mov dword [ebp - 0x14], 2
jmp 0x5010ce
mov dword [ebp - 0x14], 4
jmp 0x5010ce
mov dword [ebp - 0x14], 3
jmp 0x5010ce
cmp eax, 0x500
je 0x5010c7
cmp eax, 0x600
je 0x501124
cmp eax, edx
jne 0x500fd6
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x5010f2
mov ecx, dword [0x5afb7c]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x5010f2
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x50110e
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x50110e
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x501117
or dword [ebp - 0xc], edi
test al, 0x20
je 0x50112d
or dword [ebp - 0xc], 0x8000000
jmp 0x501138
mov dword [ebp - 0x14], 5
jmp 0x5010ce
test al, 0x10
je 0x501138
or dword [ebp - 0xc], 0x10000000
call fcn.0050e342
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x50115e
call fcn.004fdeb7
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004fdea4
mov dword [eax], 0x18
jmp 0x5011ec
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 0x5011f8
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x5011c4
test byte [ebp + 0x10], 1
je 0x5011c4
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 0x5011f8
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x5b2a20]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.DLL_GetLastError]
push eax
call fcn.004fdeca
pop ecx
call fcn.004fdea4
mov eax, dword [eax]
jmp 0x501686
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.DLL_GetFileType]
cmp eax, ebx
jne 0x501249
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x5b2a20]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.DLL_GetLastError]
mov esi, eax
push esi
call fcn.004fdeca
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.DLL_CloseHandle]
cmp esi, ebx
jne 0x5011ec
call fcn.004fdea4
mov dword [eax], 0xd
jmp 0x5011ec
cmp eax, 2
jne 0x501254
or byte [ebp - 1], 0x40
jmp 0x50125d
cmp eax, 3
jne 0x50125d
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.0050e111
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x5b2a20]
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 + 0x5b2a20]
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 0x501333
test cl, 0x80
je 0x501403
test byte [ebp + 0x10], 2
je 0x501333
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.0050998a
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x5012f1
call fcn.004fdeb7
cmp dword [eax], 0x83
je 0x501333
push dword [esi]
call fcn.0050182b
jmp 0x5011eb
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.005104f1
add esp, 0xc
test eax, eax
jne 0x501323
cmp word [ebp - 0x2c], 0x1a
jne 0x501323
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.0051033d
add esp, 0xc
cmp eax, edi
je 0x5012e5
push ebx
push ebx
push dword [esi]
call fcn.0050998a
add esp, 0xc
cmp eax, edi
je 0x5012e5
test byte [ebp - 1], 0x80
je 0x501403
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x50135b
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x501358
or dword [ebp + 0x10], edi
jmp 0x50135b
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x5013a8
cmp eax, 0x10000
je 0x501394
cmp eax, 0x14000
je 0x501394
cmp eax, 0x20000
je 0x5013a2
cmp eax, 0x24000
je 0x5013a2
cmp eax, 0x40000
je 0x50138e
cmp eax, 0x44000
jne 0x5013ab
mov byte [ebp - 2], 1
jmp 0x5013ab
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x5013ab
mov byte [ebp - 2], 2
jmp 0x5013ab
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x501403
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x501403
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x50155d
cmp eax, 0x80000000
je 0x501524
cmp eax, ecx
jne 0x501403
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x501403
cmp eax, 2
jbe 0x501605
cmp eax, 4
jbe 0x5014f6
cmp eax, 5
je 0x501605
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x5b2a20]
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 + 0x5b2a20]
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 0x501475
test byte [ebp + 0x10], 8
je 0x501475
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x5b2a20]
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 0x501684
test byte [ebp + 0x10], 1
je 0x501684
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 0x50166d
call dword [sym.imp.KERNEL32.DLL_GetLastError]
push eax
call fcn.004fdeca
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x5b2a20]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.0050e18e
pop ecx
jmp 0x5011eb
push 2
push ebx
push ebx
push dword [esi]
call fcn.005101a1
add esp, 0x10
or eax, edx
je 0x501605
push ebx
push ebx
push ebx
push dword [esi]
call fcn.005101a1
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x5012e5
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.005104f1
add esp, 0xc
cmp eax, 0xffffffff
je 0x5012e5
cmp eax, 2
je 0x5015a9
cmp eax, 3
jne 0x5015f7
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x5015a9
mov byte [ebp - 2], 1
jmp 0x501403
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x501403
cmp eax, 2
jbe 0x501605
cmp eax, 4
ja 0x5013fa
push 2
push ebx
push ebx
push dword [esi]
call fcn.005101a1
add esp, 0x10
or eax, edx
je 0x501605
push ebx
push ebx
push ebx
push dword [esi]
call fcn.005101a1
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x501403
jmp 0x5012e5
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x5015d1
push dword [esi]
call fcn.0050182b
pop ecx
call fcn.004fdea4
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x501686
cmp eax, 0xfeff
jne 0x5015f7
push ebx
push 2
push dword [esi]
call fcn.0050998a
add esp, 0xc
cmp eax, 0xffffffff
je 0x5012e5
mov byte [ebp - 2], 2
jmp 0x501403
push ebx
push ebx
push dword [esi]
call fcn.0050998a
add esp, 0xc
jmp 0x50159b
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x501625
dec eax
jne 0x501403
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x501633
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.0050947b
add esp, 0xc
cmp eax, 0xffffffff
je 0x501659
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x501633
jmp 0x501403
push dword [esi]
call fcn.0050182b
pop ecx
call fcn.004fdea4
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x501686
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x5b2a20]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret