Function at 0x501ae0
Capabilities:
Compute adler32 checksum

Disassembly:
push ebp
push ebx
push edi
push esi
push eax
mov ebx, dword [esp + 0x20]
mov edi, dword [esp + 0x1c]
mov ecx, dword [esp + 0x18]
movzx esi, cx
shr ecx, 0x10
cmp ebx, 1
jne 0x5017bf
movzx eax, byte [edi]
lea edx, [esi + eax]
cmp edx, 0xfff1
lea eax, [esi + eax - 0xfff1]
cmovb eax, edx
add ecx, eax
mov edx, ecx
shl edx, 0x10
cmp ecx, 0xfff1
lea ecx, [edx + 0xf0000]
cmovb ecx, edx
or ecx, eax
jmp 0x501ad2
test edi, edi
je 0x501867
cmp ebx, 0x10
jae 0x501871
test ebx, ebx
je 0x50183a
lea eax, [ebx - 1]
mov ebp, ebx
and ebp, 3
je 0x501806
mov dword [esp], eax
xor edx, edx
nop word cs:[eax + eax]
nop dword [eax]
movzx eax, byte [edi + edx]
add esi, eax
add ecx, esi
add edx, 1
cmp ebp, edx
jne 0x5017f0
sub ebx, edx
add edi, edx
mov eax, dword [esp]
cmp eax, 3
jb 0x50183a
xor eax, eax
nop dword [eax]
movzx edx, byte [edi + eax]
add edx, esi
add ecx, edx
movzx esi, byte [edi + eax + 1]
add esi, edx
add ecx, esi
movzx edx, byte [edi + eax + 2]
add edx, esi
add ecx, edx
movzx esi, byte [edi + eax + 3]
add esi, edx
add ecx, esi
add eax, 4
cmp ebx, eax
jne 0x501810
lea edi, [esi - 0xfff1]
cmp esi, 0xfff1
cmovb edi, esi
mov edx, 0x80078071
mov eax, ecx
mul edx
shr edx, 0xf
imul eax, edx, 0xfff1
sub ecx, eax
shl ecx, 0x10
or ecx, edi
jmp 0x501ad2
mov ecx, 1
jmp 0x501ad2
cmp ebx, 0x15b0
jb 0x5019b0
mov ebp, 0x80078071
nop word cs:[eax + eax]
nop dword [eax]
add ebx, 0xffffea50
mov eax, 0xffffea50
nop dword [eax + eax]
movzx edx, byte [edi + eax + 0x15b0]
add edx, esi
add ecx, edx
movzx esi, byte [edi + eax + 0x15b1]
add esi, edx
add ecx, esi
movzx edx, byte [edi + eax + 0x15b2]
add edx, esi
add ecx, edx
movzx esi, byte [edi + eax + 0x15b3]
add esi, edx
add ecx, esi
movzx edx, byte [edi + eax + 0x15b4]
add edx, esi
add ecx, edx
movzx esi, byte [edi + eax + 0x15b5]
add esi, edx
add ecx, esi
movzx edx, byte [edi + eax + 0x15b6]
add edx, esi
add ecx, edx
movzx esi, byte [edi + eax + 0x15b7]
add esi, edx
add ecx, esi
movzx edx, byte [edi + eax + 0x15b8]
add edx, esi
add ecx, edx
movzx esi, byte [edi + eax + 0x15b9]
add esi, edx
add ecx, esi
movzx edx, byte [edi + eax + 0x15ba]
add edx, esi
add ecx, edx
movzx esi, byte [edi + eax + 0x15bb]
add esi, edx
add ecx, esi
movzx edx, byte [edi + eax + 0x15bc]
add edx, esi
add ecx, edx
movzx esi, byte [edi + eax + 0x15bd]
add esi, edx
add ecx, esi
movzx edx, byte [edi + eax + 0x15be]
add edx, esi
add ecx, edx
movzx esi, byte [edi + eax + 0x15bf]
add esi, edx
add ecx, esi
add eax, 0x10
jne 0x5018a0
mov eax, esi
mul ebp
add edi, 0x15b0
shr edx, 0xf
imul eax, edx, 0xfff1
sub esi, eax
mov eax, ecx
mul ebp
shr edx, 0xf
imul eax, edx, 0xfff1
sub ecx, eax
cmp ebx, 0x15af
ja 0x501890
test ebx, ebx
je 0x501acd
cmp ebx, 0x10
jb 0x501a42
nop word [eax + eax]
add ebx, 0xfffffff0
movzx eax, byte [edi]
add eax, esi
add ecx, eax
movzx edx, byte [edi + 1]
add edx, eax
add ecx, edx
movzx eax, byte [edi + 2]
add eax, edx
add ecx, eax
movzx edx, byte [edi + 3]
add edx, eax
add ecx, edx
movzx eax, byte [edi + 4]
add eax, edx
add ecx, eax
movzx edx, byte [edi + 5]
add edx, eax
add ecx, edx
movzx eax, byte [edi + 6]
add eax, edx
add ecx, eax
movzx edx, byte [edi + 7]
add edx, eax
add ecx, edx
movzx eax, byte [edi + 8]
add eax, edx
add ecx, eax
movzx edx, byte [edi + 9]
add edx, eax
add ecx, edx
movzx eax, byte [edi + 0xa]
add eax, edx
add ecx, eax
movzx edx, byte [edi + 0xb]
add edx, eax
add ecx, edx
movzx eax, byte [edi + 0xc]
add eax, edx
add ecx, eax
movzx edx, byte [edi + 0xd]
add edx, eax
add ecx, edx
movzx eax, byte [edi + 0xe]
add eax, edx
add ecx, eax
movzx esi, byte [edi + 0xf]
add esi, eax
add ecx, esi
add edi, 0x10
cmp ebx, 0xf
ja 0x5019b0
test ebx, ebx
je 0x501aaa
lea eax, [ebx - 1]
mov ebp, ebx
and ebp, 3
je 0x501a76
mov dword [esp], eax
xor edx, edx
nop word cs:[eax + eax]
nop dword [eax + eax]
movzx eax, byte [edi + edx]
add esi, eax
add ecx, esi
add edx, 1
cmp ebp, edx
jne 0x501a60
sub ebx, edx
add edi, edx
mov eax, dword [esp]
cmp eax, 3
jb 0x501aaa
xor eax, eax
nop dword [eax]
movzx edx, byte [edi + eax]
add edx, esi
add ecx, edx
movzx esi, byte [edi + eax + 1]
add esi, edx
add ecx, esi
movzx edx, byte [edi + eax + 2]
add edx, esi
add ecx, edx
movzx esi, byte [edi + eax + 3]
add esi, edx
add ecx, esi
add eax, 4
cmp ebx, eax
jne 0x501a80
mov edi, 0x80078071
mov eax, esi
mul edi
shr edx, 0xf
imul ebx, edx, 0xfff1
mov eax, ecx
mul edi
sub esi, ebx
shr edx, 0xf
imul eax, edx, 0xfff1
sub ecx, eax
shl ecx, 0x10
or ecx, esi
mov eax, ecx
add esp, 4
pop esi
pop edi
pop ebx
pop ebp
ret
jmp 0x501770