Function at 0x40ac40
Capabilities:
Compute adler32 checksum

Disassembly:
push ebp
mov ebp, esp
mov ecx, dword [ebp + 8]
push ebx
mov ebx, dword [ebp + 0x10]
push esi
mov esi, ecx
and ecx, 0xffff
shr esi, 0x10
cmp ebx, 1
jne 0x40ac8c
mov eax, dword [ebp + 0xc]
movzx eax, byte [eax]
add ecx, eax
cmp ecx, 0xfff1
jb 0x40ac71
sub ecx, 0xfff1
add esi, ecx
cmp esi, 0xfff1
jb 0x40ac81
sub esi, 0xfff1
shl esi, 0x10
or esi, ecx
mov eax, esi
pop esi
pop ebx
pop ebp
ret
push edi
mov edi, dword [ebp + 0xc]
test edi, edi
jne 0x40ac9c
lea eax, [edi + 1]
pop edi
pop esi
pop ebx
pop ebp
ret
cmp ebx, 0x10
jae 0x40acdd
test ebx, ebx
je 0x40acb2
movzx eax, byte [edi]
lea edi, [edi + 1]
add ecx, eax
add esi, ecx
dec ebx
jne 0x40aca5
cmp ecx, 0xfff1
jb 0x40acc0
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
pop ebp
ret
cmp ebx, 0x15b0
jb 0x40adc6
mov eax, 0x5e6ea9af
mul ebx
shr edx, 0xb
mov dword [ebp + 8], edx
jmp 0x40ad00
sub ebx, 0x15b0
mov edx, 0x15b
jmp 0x40ad10
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 0x40ad10
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 dword [ebp + 8]
jne 0x40ad00
test ebx, ebx
je 0x40aea1
cmp ebx, 0x10
jb 0x40ae6c
mov edx, ebx
shr edx, 4
lea esp, [esp]
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 0x40ade0
test ebx, ebx
je 0x40ae7d
movzx eax, byte [edi]
lea edi, [edi + 1]
add ecx, eax
add esi, ecx
dec ebx
jne 0x40ae70
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
pop ebp
ret