Function at 0x42db80
Capabilities:
Encode data using xor
Hash data with crc32

Disassembly:
push ebx
push esi
not eax
jmp 0x42dba2
xor ebx, ebx
mov bl, byte [edx]
inc edx
xor ebx, eax
and ebx, 0xff
shr eax, 8
mov ebx, dword [ebx*4 + 0x58bf90]
xor ebx, eax
dec ecx
mov eax, ebx
test ecx, ecx
je 0x42dbab
test dl, 3
jne 0x42db86
cmp ecx, 0x20
jb 0x42de10
xor eax, dword [edx]
add edx, 4
mov esi, eax
mov ebx, eax
shr esi, 8
and ebx, 0xff
and esi, 0xff
mov ebx, dword [ebx*4 + 0x58cb90]
mov esi, dword [esi*4 + 0x58c790]
xor ebx, esi
mov esi, eax
shr esi, 0x10
and esi, 0xff
shr eax, 0x18
mov esi, dword [esi*4 + 0x58c390]
xor ebx, esi
mov eax, dword [eax*4 + 0x58bf90]
xor ebx, eax
mov eax, ebx
xor eax, dword [edx]
add edx, 4
mov esi, eax
mov ebx, eax
shr esi, 8
and ebx, 0xff
and esi, 0xff
mov ebx, dword [ebx*4 + 0x58cb90]
mov esi, dword [esi*4 + 0x58c790]
xor ebx, esi
mov esi, eax
shr esi, 0x10
and esi, 0xff
shr eax, 0x18
mov esi, dword [esi*4 + 0x58c390]
xor ebx, esi
mov eax, dword [eax*4 + 0x58bf90]
xor ebx, eax
mov eax, ebx
xor eax, dword [edx]
add edx, 4
mov esi, eax
mov ebx, eax
shr esi, 8
and ebx, 0xff
and esi, 0xff
mov ebx, dword [ebx*4 + 0x58cb90]
mov esi, dword [esi*4 + 0x58c790]
xor ebx, esi
mov esi, eax
shr esi, 0x10
and esi, 0xff
shr eax, 0x18
mov esi, dword [esi*4 + 0x58c390]
xor ebx, esi
mov eax, dword [eax*4 + 0x58bf90]
xor ebx, eax
mov eax, ebx
xor eax, dword [edx]
add edx, 4
mov esi, eax
mov ebx, eax
shr esi, 8
and ebx, 0xff
and esi, 0xff
mov ebx, dword [ebx*4 + 0x58cb90]
mov esi, dword [esi*4 + 0x58c790]
xor ebx, esi
mov esi, eax
shr esi, 0x10
and esi, 0xff
shr eax, 0x18
mov esi, dword [esi*4 + 0x58c390]
xor ebx, esi
mov eax, dword [eax*4 + 0x58bf90]
xor ebx, eax
mov eax, ebx
xor eax, dword [edx]
add edx, 4
mov esi, eax
mov ebx, eax
shr esi, 8
and ebx, 0xff
and esi, 0xff
mov ebx, dword [ebx*4 + 0x58cb90]
mov esi, dword [esi*4 + 0x58c790]
xor ebx, esi
mov esi, eax
shr esi, 0x10
and esi, 0xff
shr eax, 0x18
mov esi, dword [esi*4 + 0x58c390]
xor ebx, esi
mov eax, dword [eax*4 + 0x58bf90]
xor ebx, eax
mov eax, ebx
xor eax, dword [edx]
add edx, 4
mov esi, eax
mov ebx, eax
shr esi, 8
and ebx, 0xff
and esi, 0xff
mov ebx, dword [ebx*4 + 0x58cb90]
mov esi, dword [esi*4 + 0x58c790]
xor ebx, esi
mov esi, eax
shr esi, 0x10
and esi, 0xff
shr eax, 0x18
mov esi, dword [esi*4 + 0x58c390]
xor ebx, esi
mov eax, dword [eax*4 + 0x58bf90]
xor ebx, eax
mov eax, ebx
xor eax, dword [edx]
add edx, 4
mov esi, eax
mov ebx, eax
shr esi, 8
and ebx, 0xff
and esi, 0xff
mov ebx, dword [ebx*4 + 0x58cb90]
mov esi, dword [esi*4 + 0x58c790]
xor ebx, esi
mov esi, eax
shr esi, 0x10
and esi, 0xff
shr eax, 0x18
mov esi, dword [esi*4 + 0x58c390]
xor ebx, esi
mov eax, dword [eax*4 + 0x58bf90]
xor ebx, eax
mov eax, ebx
xor eax, dword [edx]
add edx, 4
mov esi, eax
mov ebx, eax
shr esi, 8
and ebx, 0xff
and esi, 0xff
mov ebx, dword [ebx*4 + 0x58cb90]
mov esi, dword [esi*4 + 0x58c790]
xor ebx, esi
mov esi, eax
shr esi, 0x10
and esi, 0xff
shr eax, 0x18
mov esi, dword [esi*4 + 0x58c390]
xor ebx, esi
mov eax, dword [eax*4 + 0x58bf90]
xor ebx, eax
sub ecx, 0x20
mov eax, ebx
cmp ecx, 0x20
jae 0x42dbb4
cmp ecx, 4
jb 0x42de67
xor eax, dword [edx]
add edx, 4
mov esi, eax
mov ebx, eax
shr esi, 8
and ebx, 0xff
and esi, 0xff
mov ebx, dword [ebx*4 + 0x58cb90]
mov esi, dword [esi*4 + 0x58c790]
xor ebx, esi
mov esi, eax
shr esi, 0x10
and esi, 0xff
shr eax, 0x18
mov esi, dword [esi*4 + 0x58c390]
xor ebx, esi
mov eax, dword [eax*4 + 0x58bf90]
xor ebx, eax
sub ecx, 4
mov eax, ebx
cmp ecx, 4
jae 0x42de15
test ecx, ecx
je 0x42de89
xor ebx, ebx
mov bl, byte [edx]
xor ebx, eax
and ebx, 0xff
shr eax, 8
mov ebx, dword [ebx*4 + 0x58bf90]
xor ebx, eax
inc edx
mov eax, ebx
dec ecx
jne 0x42de6b
not eax
pop esi
pop ebx
ret