Function at 0x505de7
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 0x505e16
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x505e20
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004f44e1
test eax, eax
pop ecx
je 0x505e3b
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004ebf6e
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004f1da0
test eax, eax
pop ecx
je 0x505e56
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004ebf6e
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x505e73
test ecx, 0x74000
jne 0x505e6f
cmp dword [ebp - 0x24], eax
je 0x505e73
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x505ecd
dec eax
je 0x505eb7
dec eax
je 0x505eb2
call fcn.004f33c3
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f33b0
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004ec06a
add esp, 0x14
jmp 0x506480
mov dword [ebp - 8], edx
jmp 0x505ed0
test cl, 8
je 0x505ec4
test ecx, 0x70000
jne 0x505eb2
mov dword [ebp - 8], 0x40000000
jmp 0x505ed0
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x505f11
sub eax, ecx
je 0x505f08
sub eax, ecx
je 0x505eff
sub eax, ecx
je 0x505ef6
sub eax, 0x40
jne 0x505e8c
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x505f14
mov dword [ebp - 0x10], 3
jmp 0x505f14
mov dword [ebp - 0x10], 2
jmp 0x505f14
mov dword [ebp - 0x10], 1
jmp 0x505f14
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 0x505f67
je 0x505f5e
cmp eax, ebx
je 0x505f5e
cmp eax, edi
je 0x505f55
cmp eax, 0x200
je 0x505fda
cmp eax, 0x300
jne 0x505e8c
mov dword [ebp - 0x14], 2
jmp 0x505f84
mov dword [ebp - 0x14], 4
jmp 0x505f84
mov dword [ebp - 0x14], 3
jmp 0x505f84
cmp eax, 0x500
je 0x505f7d
cmp eax, 0x600
je 0x505fda
cmp eax, edx
jne 0x505e8c
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x505fa8
mov ecx, dword [0x559b74]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x505fa8
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x505fc4
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x505fc4
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x505fcd
or dword [ebp - 0xc], edi
test al, 0x20
je 0x505fe3
or dword [ebp - 0xc], 0x8000000
jmp 0x505fee
mov dword [ebp - 0x14], 5
jmp 0x505f84
test al, 0x10
je 0x505fee
or dword [ebp - 0xc], 0x10000000
call fcn.004ef2bb
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x506014
call fcn.004f33c3
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f33b0
mov dword [eax], 0x18
jmp 0x5060a2
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 0x5060ae
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x50607a
test byte [ebp + 0x10], 1
je 0x50607a
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 0x5060ae
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x55aec0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f33d6
pop ecx
call fcn.004f33b0
mov eax, dword [eax]
jmp 0x50653c
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x5060ff
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x55aec0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.004f33d6
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x5060a2
call fcn.004f33b0
mov dword [eax], 0xd
jmp 0x5060a2
cmp eax, 2
jne 0x50610a
or byte [ebp - 1], 0x40
jmp 0x506113
cmp eax, 3
jne 0x506113
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004ef08a
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x55aec0]
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 + 0x55aec0]
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 0x5061e9
test cl, 0x80
je 0x5062b9
test byte [ebp + 0x10], 2
je 0x5061e9
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004f986c
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x5061a7
call fcn.004f33c3
cmp dword [eax], 0x83
je 0x5061e9
push dword [esi]
call fcn.004f944b
jmp 0x5060a1
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.004fa835
add esp, 0xc
test eax, eax
jne 0x5061d9
cmp word [ebp - 0x2c], 0x1a
jne 0x5061d9
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004eeed6
add esp, 0xc
cmp eax, edi
je 0x50619b
push ebx
push ebx
push dword [esi]
call fcn.004f986c
add esp, 0xc
cmp eax, edi
je 0x50619b
test byte [ebp - 1], 0x80
je 0x5062b9
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x506211
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x50620e
or dword [ebp + 0x10], edi
jmp 0x506211
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x50625e
cmp eax, 0x10000
je 0x50624a
cmp eax, 0x14000
je 0x50624a
cmp eax, 0x20000
je 0x506258
cmp eax, 0x24000
je 0x506258
cmp eax, 0x40000
je 0x506244
cmp eax, 0x44000
jne 0x506261
mov byte [ebp - 2], 1
jmp 0x506261
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x506261
mov byte [ebp - 2], 2
jmp 0x506261
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x5062b9
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x5062b9
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x506413
cmp eax, 0x80000000
je 0x5063da
cmp eax, ecx
jne 0x5062b9
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x5062b9
cmp eax, 2
jbe 0x5064bb
cmp eax, 4
jbe 0x5063ac
cmp eax, 5
je 0x5064bb
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55aec0]
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 + 0x55aec0]
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 0x50632b
test byte [ebp + 0x10], 8
je 0x50632b
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55aec0]
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 0x50653a
test byte [ebp + 0x10], 1
je 0x50653a
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 0x506523
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f33d6
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55aec0]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004ef107
pop ecx
jmp 0x5060a1
push 2
push ebx
push ebx
push dword [esi]
call fcn.004ffc83
add esp, 0x10
or eax, edx
je 0x5064bb
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004ffc83
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x50619b
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004fa835
add esp, 0xc
cmp eax, 0xffffffff
je 0x50619b
cmp eax, 2
je 0x50645f
cmp eax, 3
jne 0x5064ad
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x50645f
mov byte [ebp - 2], 1
jmp 0x5062b9
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x5062b9
cmp eax, 2
jbe 0x5064bb
cmp eax, 4
ja 0x5062b0
push 2
push ebx
push ebx
push dword [esi]
call fcn.004ffc83
add esp, 0x10
or eax, edx
je 0x5064bb
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004ffc83
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x5062b9
jmp 0x50619b
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x506487
push dword [esi]
call fcn.004f944b
pop ecx
call fcn.004f33b0
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x50653c
cmp eax, 0xfeff
jne 0x5064ad
push ebx
push 2
push dword [esi]
call fcn.004f986c
add esp, 0xc
cmp eax, 0xffffffff
je 0x50619b
mov byte [ebp - 2], 2
jmp 0x5062b9
push ebx
push ebx
push dword [esi]
call fcn.004f986c
add esp, 0xc
jmp 0x506451
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x5064db
dec eax
jne 0x5062b9
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x5064e9
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.004ffa82
add esp, 0xc
cmp eax, 0xffffffff
je 0x50650f
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x5064e9
jmp 0x5062b9
push dword [esi]
call fcn.004f944b
pop ecx
call fcn.004f33b0
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x50653c
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55aec0]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret