Function at 0x4b0489
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 0x4b04b8
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x4b04c2
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004b370f
test eax, eax
pop ecx
je 0x4b04dd
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004932e6
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004a3da4
test eax, eax
pop ecx
je 0x4b04f8
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004932e6
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x4b0515
test ecx, 0x74000
jne 0x4b0511
cmp dword [ebp - 0x24], eax
je 0x4b0515
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x4b056f
dec eax
je 0x4b0559
dec eax
je 0x4b0554
call fcn.00497f81
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.00497f6e
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004933e2
add esp, 0x14
jmp 0x4b0b22
mov dword [ebp - 8], edx
jmp 0x4b0572
test cl, 8
je 0x4b0566
test ecx, 0x70000
jne 0x4b0554
mov dword [ebp - 8], 0x40000000
jmp 0x4b0572
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x4b05b3
sub eax, ecx
je 0x4b05aa
sub eax, ecx
je 0x4b05a1
sub eax, ecx
je 0x4b0598
sub eax, 0x40
jne 0x4b052e
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x4b05b6
mov dword [ebp - 0x10], 3
jmp 0x4b05b6
mov dword [ebp - 0x10], 2
jmp 0x4b05b6
mov dword [ebp - 0x10], 1
jmp 0x4b05b6
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 0x4b0609
je 0x4b0600
cmp eax, ebx
je 0x4b0600
cmp eax, edi
je 0x4b05f7
cmp eax, 0x200
je 0x4b067c
cmp eax, 0x300
jne 0x4b052e
mov dword [ebp - 0x14], 2
jmp 0x4b0626
mov dword [ebp - 0x14], 4
jmp 0x4b0626
mov dword [ebp - 0x14], 3
jmp 0x4b0626
cmp eax, 0x500
je 0x4b061f
cmp eax, 0x600
je 0x4b067c
cmp eax, edx
jne 0x4b052e
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x4b064a
mov ecx, dword [0x519eb8]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x4b064a
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x4b0666
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x4b0666
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x4b066f
or dword [ebp - 0xc], edi
test al, 0x20
je 0x4b0685
or dword [ebp - 0xc], 0x8000000
jmp 0x4b0690
mov dword [ebp - 0x14], 5
jmp 0x4b0626
test al, 0x10
je 0x4b0690
or dword [ebp - 0xc], 0x10000000
call fcn.004b1038
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x4b06b6
call fcn.00497f81
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.00497f6e
mov dword [eax], 0x18
jmp 0x4b0744
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 0x4b0750
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x4b071c
test byte [ebp + 0x10], 1
je 0x4b071c
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 0x4b0750
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x51c260]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.DLL_GetLastError]
push eax
call fcn.00497f94
pop ecx
call fcn.00497f6e
mov eax, dword [eax]
jmp 0x4b0bde
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.DLL_GetFileType]
cmp eax, ebx
jne 0x4b07a1
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x51c260]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.DLL_GetLastError]
mov esi, eax
push esi
call fcn.00497f94
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.DLL_CloseHandle]
cmp esi, ebx
jne 0x4b0744
call fcn.00497f6e
mov dword [eax], 0xd
jmp 0x4b0744
cmp eax, 2
jne 0x4b07ac
or byte [ebp - 1], 0x40
jmp 0x4b07b5
cmp eax, 3
jne 0x4b07b5
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004b0e07
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x51c260]
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 + 0x51c260]
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 0x4b088b
test cl, 0x80
je 0x4b095b
test byte [ebp + 0x10], 2
je 0x4b088b
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004aacdc
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x4b0849
call fcn.00497f81
cmp dword [eax], 0x83
je 0x4b088b
push dword [esi]
call fcn.004a8f6e
jmp 0x4b0743
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.004a8883
add esp, 0xc
test eax, eax
jne 0x4b087b
cmp word [ebp - 0x2c], 0x1a
jne 0x4b087b
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004b349f
add esp, 0xc
cmp eax, edi
je 0x4b083d
push ebx
push ebx
push dword [esi]
call fcn.004aacdc
add esp, 0xc
cmp eax, edi
je 0x4b083d
test byte [ebp - 1], 0x80
je 0x4b095b
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x4b08b3
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x4b08b0
or dword [ebp + 0x10], edi
jmp 0x4b08b3
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x4b0900
cmp eax, 0x10000
je 0x4b08ec
cmp eax, 0x14000
je 0x4b08ec
cmp eax, 0x20000
je 0x4b08fa
cmp eax, 0x24000
je 0x4b08fa
cmp eax, 0x40000
je 0x4b08e6
cmp eax, 0x44000
jne 0x4b0903
mov byte [ebp - 2], 1
jmp 0x4b0903
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x4b0903
mov byte [ebp - 2], 2
jmp 0x4b0903
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x4b095b
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x4b095b
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x4b0ab5
cmp eax, 0x80000000
je 0x4b0a7c
cmp eax, ecx
jne 0x4b095b
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4b095b
cmp eax, 2
jbe 0x4b0b5d
cmp eax, 4
jbe 0x4b0a4e
cmp eax, 5
je 0x4b0b5d
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x51c260]
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 + 0x51c260]
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 0x4b09cd
test byte [ebp + 0x10], 8
je 0x4b09cd
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x51c260]
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 0x4b0bdc
test byte [ebp + 0x10], 1
je 0x4b0bdc
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 0x4b0bc5
call dword [sym.imp.KERNEL32.DLL_GetLastError]
push eax
call fcn.00497f94
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x51c260]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004b0e84
pop ecx
jmp 0x4b0743
push 2
push ebx
push ebx
push dword [esi]
call fcn.004adca0
add esp, 0x10
or eax, edx
je 0x4b0b5d
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004adca0
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x4b083d
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004a8883
add esp, 0xc
cmp eax, 0xffffffff
je 0x4b083d
cmp eax, 2
je 0x4b0b01
cmp eax, 3
jne 0x4b0b4f
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x4b0b01
mov byte [ebp - 2], 1
jmp 0x4b095b
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4b095b
cmp eax, 2
jbe 0x4b0b5d
cmp eax, 4
ja 0x4b0952
push 2
push ebx
push ebx
push dword [esi]
call fcn.004adca0
add esp, 0x10
or eax, edx
je 0x4b0b5d
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004adca0
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x4b095b
jmp 0x4b083d
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x4b0b29
push dword [esi]
call fcn.004a8f6e
pop ecx
call fcn.00497f6e
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x4b0bde
cmp eax, 0xfeff
jne 0x4b0b4f
push ebx
push 2
push dword [esi]
call fcn.004aacdc
add esp, 0xc
cmp eax, 0xffffffff
je 0x4b083d
mov byte [ebp - 2], 2
jmp 0x4b095b
push ebx
push ebx
push dword [esi]
call fcn.004aacdc
add esp, 0xc
jmp 0x4b0af3
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x4b0b7d
dec eax
jne 0x4b095b
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x4b0b8b
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.004ac0fa
add esp, 0xc
cmp eax, 0xffffffff
je 0x4b0bb1
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x4b0b8b
jmp 0x4b095b
push dword [esi]
call fcn.004a8f6e
pop ecx
call fcn.00497f6e
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x4b0bde
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x51c260]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret