Function at 0x4bb81c
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 0x4bb84b
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x4bb855
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004bf04c
test eax, eax
pop ecx
je 0x4bb870
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0049eba8
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004a7a1a
test eax, eax
pop ecx
je 0x4bb88b
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0049eba8
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x4bb8a8
test ecx, 0x74000
jne 0x4bb8a4
cmp dword [ebp - 0x24], eax
je 0x4bb8a8
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocStringLen
je 0x4bb902
dec eax
je 0x4bb8ec
dec eax
je 0x4bb8e7
call fcn.004a62fa
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004a62e7
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.0049eca4
add esp, 0x14
jmp 0x4bbeb5
mov dword [ebp - 8], edx
jmp 0x4bb905
test cl, 8
je 0x4bb8f9
test ecx, 0x70000
jne 0x4bb8e7
mov dword [ebp - 8], 0x40000000
jmp 0x4bb905
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x4bb946
sub eax, ecx
je 0x4bb93d
sub eax, ecx
je 0x4bb934
sub eax, ecx
je 0x4bb92b
sub eax, 0x40
jne 0x4bb8c1
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x4bb949
mov dword [ebp - 0x10], 3
jmp 0x4bb949
mov dword [ebp - 0x10], 2
jmp 0x4bb949
mov dword [ebp - 0x10], 1
jmp 0x4bb949
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 0x4bb99c
je 0x4bb993
cmp eax, ebx
je 0x4bb993
cmp eax, edi
je 0x4bb98a
cmp eax, 0x200
je 0x4bba0f
cmp eax, 0x300
jne 0x4bb8c1
mov dword [ebp - 0x14], 2
jmp 0x4bb9b9
mov dword [ebp - 0x14], 4
jmp 0x4bb9b9
mov dword [ebp - 0x14], 3
jmp 0x4bb9b9
cmp eax, 0x500
je 0x4bb9b2
cmp eax, 0x600
je 0x4bba0f
cmp eax, edx
jne 0x4bb8c1
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x4bb9dd
mov ecx, dword [0x603634]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x4bb9dd
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x4bb9f9
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x4bb9f9
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x4bba02
or dword [ebp - 0xc], edi
test al, 0x20
je 0x4bba18
or dword [ebp - 0xc], 0x8000000
jmp 0x4bba23
mov dword [ebp - 0x14], 5
jmp 0x4bb9b9
test al, 0x10
je 0x4bba23
or dword [ebp - 0xc], 0x10000000
call fcn.004bb51c
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x4bba49
call fcn.004a62fa
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004a62e7
mov dword [eax], 0x18
jmp 0x4bbad7
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 0x4bbae3
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x4bbaaf
test byte [ebp + 0x10], 1
je 0x4bbaaf
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 0x4bbae3
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x607700]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004a630d
pop ecx
call fcn.004a62e7
mov eax, dword [eax]
jmp 0x4bbf71
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x4bbb34
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x607700]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.004a630d
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x4bbad7
call fcn.004a62e7
mov dword [eax], 0xd
jmp 0x4bbad7
cmp eax, 2
jne 0x4bbb3f
or byte [ebp - 1], 0x40
jmp 0x4bbb48
cmp eax, 3
jne 0x4bbb48
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004bb2eb
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x607700]
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 + 0x607700]
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 0x4bbc1e
test cl, 0x80
je 0x4bbcee
test byte [ebp + 0x10], 2
je 0x4bbc1e
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004b724b
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x4bbbdc
call fcn.004a62fa
cmp dword [eax], 0x83
je 0x4bbc1e
push dword [esi]
call fcn.004b4a76
jmp 0x4bbad6
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.004b757c
add esp, 0xc
test eax, eax
jne 0x4bbc0e
cmp word [ebp - 0x2c], 0x1a
jne 0x4bbc0e
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004beddc
add esp, 0xc
cmp eax, edi
je 0x4bbbd0
push ebx
push ebx
push dword [esi]
call fcn.004b724b
add esp, 0xc
cmp eax, edi
je 0x4bbbd0
test byte [ebp - 1], 0x80
je 0x4bbcee
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x4bbc46
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x4bbc43
or dword [ebp + 0x10], edi
jmp 0x4bbc46
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x4bbc93
cmp eax, 0x10000
je 0x4bbc7f
cmp eax, 0x14000
je 0x4bbc7f
cmp eax, 0x20000
je 0x4bbc8d
cmp eax, 0x24000
je 0x4bbc8d
cmp eax, 0x40000
je 0x4bbc79
cmp eax, 0x44000
jne 0x4bbc96
mov byte [ebp - 2], 1
jmp 0x4bbc96
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x4bbc96
mov byte [ebp - 2], 2
jmp 0x4bbc96
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x4bbcee
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x4bbcee
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x4bbe48
cmp eax, 0x80000000
je 0x4bbe0f
cmp eax, ecx
jne 0x4bbcee
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4bbcee
cmp eax, 2
jbe 0x4bbef0
cmp eax, 4
jbe 0x4bbde1
cmp eax, 5
je 0x4bbef0
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x607700]
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 + 0x607700]
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 0x4bbd60
test byte [ebp + 0x10], 8
je 0x4bbd60
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x607700]
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 0x4bbf6f
test byte [ebp + 0x10], 1
je 0x4bbf6f
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 0x4bbf58
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004a630d
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x607700]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004bb368
pop ecx
jmp 0x4bbad6
push 2
push ebx
push ebx
push dword [esi]
call fcn.004b9773
add esp, 0x10
or eax, edx
je 0x4bbef0
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004b9773
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x4bbbd0
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004b757c
add esp, 0xc
cmp eax, 0xffffffff
je 0x4bbbd0
cmp eax, 2
je 0x4bbe94
cmp eax, 3
jne 0x4bbee2
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x4bbe94
mov byte [ebp - 2], 1
jmp 0x4bbcee
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4bbcee
cmp eax, 2
jbe 0x4bbef0
cmp eax, 4
ja 0x4bbce5
push 2
push ebx
push ebx
push dword [esi]
call fcn.004b9773
add esp, 0x10
or eax, edx
je 0x4bbef0
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004b9773
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x4bbcee
jmp 0x4bbbd0
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x4bbebc
push dword [esi]
call fcn.004b4a76
pop ecx
call fcn.004a62e7
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x4bbf71
cmp eax, 0xfeff
jne 0x4bbee2
push ebx
push 2
push dword [esi]
call fcn.004b724b
add esp, 0xc
cmp eax, 0xffffffff
je 0x4bbbd0
mov byte [ebp - 2], 2
jmp 0x4bbcee
push ebx
push ebx
push dword [esi]
call fcn.004b724b
add esp, 0xc
jmp 0x4bbe86
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x4bbf10
dec eax
jne 0x4bbcee
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x4bbf1e
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.004b5397
add esp, 0xc
cmp eax, 0xffffffff
je 0x4bbf44
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x4bbf1e
jmp 0x4bbcee
push dword [esi]
call fcn.004b4a76
pop ecx
call fcn.004a62e7
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x4bbf71
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x607700]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret