Function at 0x100647b0
Capabilities:
Compute adler32 checksum

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x20
push ebx
push esi
push edi
mov edi, edx
mov ebx, ecx
movzx esi, byte [edi]
movzx eax, byte [edi + 1]
shl esi, 8
add esi, eax
movzx eax, byte [edi + 2]
shl esi, 8
add esi, eax
movzx eax, byte [edi + 3]
shl esi, 8
add esi, eax
cmp esi, 0x57bc0000
jne 0x10064a6f
movzx ecx, byte [edi + 4]
movzx eax, byte [edi + 5]
shl ecx, 8
add ecx, eax
movzx eax, byte [edi + 6]
shl ecx, 8
add ecx, eax
movzx eax, byte [edi + 7]
shl ecx, 8
add ecx, eax
jne 0x10064a6f
movzx ecx, byte [edi + 8]
movzx eax, byte [edi + 9]
shl ecx, 8
add ecx, eax
mov dword [0x10100d14], edi
movzx eax, byte [edi + 0xa]
shl ecx, 8
add ecx, eax
mov dword [0x10100d1c], ebx
movzx eax, byte [edi + 0xb]
add edi, 0x10
shl ecx, 8
add eax, ecx
mov dword [0x10100d20], ebx
mov ecx, edi
mov dword [ebp - 0x14], eax
lea esi, [eax + ebx]
mov dword [ebp - 0x1c], esi
mov dword [0x10100d18], esi
call fcn.100644b0
mov dword [ebp - 0x10], eax
cmp eax, edi
je 0x100648a1
nop dword [eax]
cmp dword [0x10100d20], esi
jbe 0x1006488e
push 0xf97
push 0x100eb688
push 0x100ec53c
call fcn.1009d619
add esp, 0xc
cmp dword [0x10100d20], esi
ja 0x10064a6f
mov eax, dword [ebp - 0x10]
mov ecx, eax
mov esi, eax
call fcn.100644b0
cmp eax, esi
mov dword [ebp - 0x10], eax
mov esi, dword [ebp - 0x1c]
jne 0x10064860
mov esi, dword [ebp - 0x14]
add esi, ebx
cmp byte [eax], 5
jne 0x10064a58
cmp byte [eax + 1], 0xfa
jne 0x10064a58
cmp dword [0x10100d20], esi
je 0x100648e4
push 0xf8c
push 0x100eb688
push 0x100ec46c
call fcn.1009d619
add esp, 0xc
cmp dword [0x10100d20], esi
jne 0x10064a6f
mov esi, dword [ebp - 0x14]
mov eax, 0x5e6ea9af
mul esi
xor edi, edi
mov dword [ebp - 0x1c], esi
shr edx, 0xb
mov ecx, 1
imul eax, edx, 0x15b0
mov edx, esi
mov dword [ebp - 0xc], edi
sub edx, eax
mov dword [ebp - 4], edx
test esi, esi
je 0x10064a23
xor esi, esi
cmp edx, 7
jbe 0x10064975
mov eax, 7
sub eax, ebx
mov dword [ebp - 0x18], eax
movzx eax, byte [ebx]
add esi, 8
add ecx, eax
movzx eax, byte [ebx + 1]
add edi, ecx
add ecx, eax
movzx eax, byte [ebx + 2]
add edi, ecx
add ecx, eax
movzx eax, byte [ebx + 3]
add edi, ecx
add ecx, eax
movzx eax, byte [ebx + 4]
add edi, ecx
add ecx, eax
movzx eax, byte [ebx + 5]
add edi, ecx
add ecx, eax
movzx eax, byte [ebx + 6]
add edi, ecx
add ecx, eax
movzx eax, byte [ebx + 7]
add edi, ecx
add ebx, 8
add ecx, eax
mov eax, dword [ebp - 0x18]
add eax, ebx
add edi, ecx
cmp eax, edx
jb 0x10064924
mov dword [ebp - 0xc], edi
mov eax, dword [ebp - 4]
xor edx, edx
mov dword [ebp - 0x18], 0
cmp esi, eax
jae 0x100649e8
sub eax, esi
cmp eax, 2
jb 0x100649d4
mov edx, dword [ebp - 4]
sub edx, esi
sub edx, 2
shr edx, 1
inc edx
lea eax, [esi + edx*2]
mov esi, dword [ebp - 0x18]
mov dword [ebp - 0x20], eax
mov edi, esi
movzx eax, byte [ebx]
add ecx, eax
movzx eax, byte [ebx + 1]
add esi, ecx
add ebx, 2
add ecx, eax
add edi, ecx
sub edx, 1
jne 0x100649a2
mov eax, dword [ebp - 0x20]
mov dword [ebp - 8], edi
mov edi, dword [ebp - 0xc]
cmp eax, dword [ebp - 4]
jae 0x100649e0
movzx eax, byte [ebx]
mov edx, dword [ebp - 8]
add ecx, eax
add edi, ecx
inc ebx
jmp 0x100649e3
movzx eax, byte [ebx]
mov esi, edx
add ecx, eax
add edi, ecx
inc ebx
jmp 0x100649e3
mov edx, dword [ebp - 8]
lea eax, [edx + esi]
add edi, eax
mov eax, 0x80078071
mul ecx
shr edx, 0xf
imul eax, edx, 0xffff000f
add ecx, eax
mov eax, 0x80078071
mul edi
shr edx, 0xf
imul eax, edx, 0xffff000f
mov edx, dword [ebp - 4]
add edi, eax
sub dword [ebp - 0x1c], edx
mov edx, 0x15b0
mov dword [ebp - 0xc], edi
mov dword [ebp - 4], edx
jne 0x10064913
mov edx, dword [ebp - 0x10]
shl edi, 0x10
add edi, ecx
movzx esi, byte [edx + 2]
movzx eax, byte [edx + 3]
shl esi, 8
add esi, eax
movzx eax, byte [edx + 4]
movzx edx, byte [edx + 5]
shl esi, 8
add esi, eax
shl esi, 8
add esi, edx
cmp edi, esi
jne 0x10064a6f
mov eax, dword [ebp - 0x14]
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret
push 0xf93
push 0x100eb688
push 0x100e8408
call fcn.1009d619
add esp, 0xc
pop edi
pop esi
xor eax, eax
pop ebx
mov esp, ebp
pop ebp
ret