Function at 0x13bdd26
Capabilities:
Compute adler32 checksum

Disassembly:
jmp 0x13bdde6
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 0x13bde31
mov eax, dword [esp + 0x10]
movzx eax, byte [eax]
add ecx, eax
cmp ecx, 0xfff1
jb 0x13bde17
sub ecx, 0xfff1
add esi, ecx
cmp esi, 0xfff1
jb 0x13bde27
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 0x13bde41
lea eax, [edi + 1]
pop edi
pop esi
pop ebx
ret
cmp ebx, 0x10
jae 0x13bde81
test ebx, ebx
je 0x13bde57
movzx eax, byte [edi]
lea edi, [edi + 1]
add ecx, eax
add esi, ecx
dec ebx
jne 0x13bde4a
cmp ecx, 0xfff1
jb 0x13bde65
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 0x13bdf6b
mov eax, 0x5e6ea9af
mul ebx
push ebp
mov ebp, edx
shr ebp, 0xb
jmp 0x13bdea6
sub ebx, 0x15b0
mov edx, 0x15b
jmp 0x13bdeb6
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 0x13bdeb6
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 0x13bdea6
pop ebp
test ebx, ebx
je 0x13be047
cmp ebx, 0x10
jb 0x13be012
mov edx, ebx
shr edx, 4
jmp 0x13bdf86
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 0x13bdf86
test ebx, ebx
je 0x13be023
movzx eax, byte [edi]
lea edi, [edi + 1]
add ecx, eax
add esi, ecx
dec ebx
jne 0x13be016
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