Function at 0x447720
Capabilities:
Compute adler32 checksum

Disassembly:
jmp 0x4477e0
mov ecx, dword [esp + 4]
push ebx
mov ebx, dword [esp + 0x10]
push esi
mov esi, ecx
and ecx, 0xffff
shr esi, 0x10
cmp ebx, 1
jne 0x44782b
mov eax, dword [esp + 0x10]
movzx eax, byte [eax]
add ecx, eax
cmp ecx, 0xfff1
jb 0x447811
sub ecx, 0xfff1
add esi, ecx
cmp esi, 0xfff1
jb 0x447821
sub esi, 0xfff1
shl esi, 0x10
or esi, ecx
mov eax, esi
pop esi
pop ebx
ret
push edi
mov edi, dword [esp + 0x14]
test edi, edi
jne 0x44783b
lea eax, [edi + 1]
pop edi
pop esi
pop ebx
ret
cmp ebx, 0x10
jae 0x44787b
test ebx, ebx
je 0x447851
movzx eax, byte [edi]
lea edi, [edi + 1]
add ecx, eax
add esi, ecx
dec ebx
jne 0x447844
cmp ecx, 0xfff1
jb 0x44785f
sub ecx, 0xfff1
mov eax, 0x80078071
mul esi
pop edi
shr edx, 0xf
mov eax, edx
shl eax, 4
sub eax, edx
add eax, esi
shl eax, 0x10
pop esi
or eax, ecx
pop ebx
ret
cmp ebx, 0x15b0
jb 0x447965
mov eax, 0x5e6ea9af
mul ebx
push ebp
mov ebp, edx
shr ebp, 0xb
jmp 0x4478a0
sub ebx, 0x15b0
mov edx, 0x15b
jmp 0x4478b0
movzx eax, byte [edi]
add ecx, eax
movzx eax, byte [edi + 1]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 2]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 3]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 4]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 5]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 6]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 7]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 8]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 9]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 0xa]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 0xb]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 0xc]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 0xd]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 0xe]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 0xf]
add esi, ecx
add edi, 0x10
add ecx, eax
add esi, ecx
dec edx
jne 0x4478b0
mov eax, 0x80078071
mul ecx
shr edx, 0xf
imul eax, edx, 0xffff000f
add ecx, eax
mov eax, 0x80078071
mul esi
shr edx, 0xf
imul eax, edx, 0xffff000f
add esi, eax
dec ebp
jne 0x4478a0
pop ebp
test ebx, ebx
je 0x447a41
cmp ebx, 0x10
jb 0x447a0c
mov edx, ebx
shr edx, 4
jmp 0x447980
movzx eax, byte [edi]
sub ebx, 0x10
add ecx, eax
movzx eax, byte [edi + 1]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 2]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 3]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 4]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 5]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 6]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 7]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 8]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 9]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 0xa]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 0xb]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 0xc]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 0xd]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 0xe]
add esi, ecx
add ecx, eax
movzx eax, byte [edi + 0xf]
add esi, ecx
add edi, 0x10
add ecx, eax
add esi, ecx
dec edx
jne 0x447980
test ebx, ebx
je 0x447a1d
movzx eax, byte [edi]
lea edi, [edi + 1]
add ecx, eax
add esi, ecx
dec ebx
jne 0x447a10
mov eax, 0x80078071
mul ecx
mov eax, 0x80078071
shr edx, 0xf
imul edx, edx, 0xffff000f
add ecx, edx
mul esi
shr edx, 0xf
imul eax, edx, 0xffff000f
add esi, eax
shl esi, 0x10
or esi, ecx
pop edi
mov eax, esi
pop esi
pop ebx
ret