Function at 0x4b5700
Capabilities:
Create thread
Resume thread

Disassembly:
mov eax, dword [esp + 8]
sub esp, 8
cmp eax, 0x24
push ebx
push ebp
push esi
push edi
jl 0x4b581d
mov edi, str.RIFF
or ecx, 0xffffffff
xor eax, eax
mov esi, dword [esp + 0x1c]
repne scasb al, byte es:[edi]
not ecx
dec ecx
push ecx
push str.RIFF
push esi
call fcn.00508460
add esp, 0xc
test eax, eax
jne 0x4b581d
mov eax, dword [esi + 4]
mov edi, str.WAVE
mov dword [esp + 0x14], eax
or ecx, 0xffffffff
xor eax, eax
add esi, 8
repne scasb al, byte es:[edi]
not ecx
dec ecx
push ecx
push str.WAVE
push esi
call fcn.00508460
add esp, 0xc
test eax, eax
jne 0x4b581d
mov ecx, dword [esp + 0x1c]
xor ebx, ebx
xor esi, esi
xor ebp, ebp
lea edi, [ecx + 0xc]
mov dword [esp + 0x10], edi
mov edx, dword [edi + 4]
push 4
push str.fmt
push edi
mov dword [esp + 0x28], edx
call fcn.00508460
add esp, 0xc
test eax, eax
jne 0x4b57a3
test esi, esi
lea ebx, [edi + 8]
jne 0x4b57da
jmp 0x4b57c2
push 4
push str.data
push edi
call fcn.00508460
add esp, 0xc
test eax, eax
jne 0x4b57c2
mov ebp, dword [esp + 0x1c]
lea esi, [edi + 8]
test ebx, ebx
jne 0x4b57de
mov eax, dword [esp + 0x1c]
mov edx, dword [esp + 0x10]
lea edi, [edi + eax + 8]
mov eax, dword [esp + 0x14]
mov ecx, edi
sub ecx, edx
cmp ecx, eax
jb 0x4b577f
test ebx, ebx
je 0x4b581d
test esi, esi
je 0x4b581d
test ebp, ebp
jbe 0x4b581d
push 0x4c
call fcn.004f83e3
mov dword [esp + 0x24], eax
mov dword [eax + 8], ebp
mov edx, dword [esp + 0x24]
mov eax, dword [edx + 8]
push eax
call fcn.0050d99f
mov ecx, dword [esp + 0x28]
add esp, 8
mov dword [ecx], eax
mov eax, dword [esp + 0x20]
mov edi, dword [eax]
test edi, edi
jne 0x4b5827
push eax
call fcn.004f840c
add esp, 4
pop edi
pop esi
pop ebp
xor eax, eax
pop ebx
add esp, 8
ret
mov ecx, ebp
push 0x14
mov edx, ecx
push 0x3c00
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, edx
and ecx, 3
rep movsb byte es:[edi], byte [esi]
mov eax, dword [esp + 0x28]
mov ecx, dword [esp + 0x2c]
mov dword [eax + 0x48], ecx
mov edx, dword [esp + 0x28]
mov dword [edx + 0x1c], 0
call fcn.004b54f0
mov ecx, dword [esp + 0x28]
add esp, 8
push 0
push 0
push 1
push 0
mov dword [ecx + 0xc], eax
call dword [sym.imp.KERNEL32.dll_CreateEventA]
mov edx, dword [esp + 0x20]
push 0
push 0x14
push 0x14
push 0
mov dword [edx + 0x2c], eax
call dword [sym.imp.KERNEL32.dll_CreateSemaphoreA]
mov ecx, dword [esp + 0x20]
mov dword [ecx + 0x28], eax
mov edx, dword [esp + 0x20]
mov dword [edx + 0x14], 0
mov eax, dword [esp + 0x20]
mov dword [eax + 0x10], 0x14
mov ecx, dword [esp + 0x20]
add ecx, 0x30
push ecx
call dword [sym.imp.KERNEL32.dll_InitializeCriticalSection]
mov eax, dword [esp + 0x20]
push 0x4b5d30
push eax
add eax, 4
push ebx
push eax
call fcn.004b5560
mov eax, dword [esp + 0x30]
add esp, 0x10
mov edi, 4
lea edx, [eax + 0x24]
push edx
push edi
push eax
push 0x4b5ae0
push 0
push 0
call dword [sym.imp.KERNEL32.dll_CreateThread]
mov ecx, dword [esp + 0x20]
push 0x577c18
mov dword [ecx + 0x20], eax
call dword [sym.imp.KERNEL32.dll_EnterCriticalSection]
mov eax, dword [0x577c38]
mov edx, dword [0x577c3c]
sub edx, eax
mov esi, eax
sar edx, 2
cmp edx, 1
jae 0x4b5a03
mov edx, dword [0x577c34]
test edx, edx
je 0x4b5932
mov ecx, eax
sub ecx, edx
sar ecx, 2
cmp ecx, 1
jbe 0x4b5932
mov ecx, eax
sub ecx, edx
sar ecx, 2
jmp 0x4b5937
mov ecx, 1
test edx, edx
jne 0x4b593f
xor eax, eax
jmp 0x4b5944
sub eax, edx
sar eax, 2
add eax, ecx
test eax, eax
mov dword [esp + 0x1c], eax
jge 0x4b5950
xor eax, eax
lea edx, [eax*4]
push edx
call fcn.004f83e3
mov edi, dword [0x577c34]
add esp, 4
mov ebp, eax
cmp edi, esi
mov ebx, ebp
je 0x4b5982
push edi
push ebx
call fcn.004b5df0
add edi, 4
add esp, 8
add ebx, 4
cmp edi, esi
jne 0x4b596e
lea eax, [esp + 0x20]
push eax
push ebx
call fcn.004b5df0
mov edi, dword [0x577c38]
add esp, 8
add ebx, 4
cmp esi, edi
je 0x4b59b1
push esi
push ebx
call fcn.004b5df0
add esi, 4
add esp, 8
add ebx, 4
cmp esi, edi
jne 0x4b599d
mov ecx, dword [0x577c38]
mov edx, dword [0x577c34]
push ecx
push edx
mov ecx, 0x577c30
call fcn.004a25a0
mov eax, dword [0x577c34]
push eax
call fcn.004f840c
mov ecx, dword [esp + 0x20]
add esp, 4
lea edx, [ebp + ecx*4]
mov ecx, 0x577c30
mov dword [0x577c3c], edx
call fcn.004b5d70
lea eax, [ebp + eax*4 + 4]
mov dword [0x577c34], ebp
mov dword [0x577c38], eax
jmp 0x4b5aa0
mov ecx, eax
sub ecx, esi
sar ecx, 2
cmp ecx, 1
jae 0x4b5a5d
lea edx, [esi + 4]
mov ecx, 0x577c30
push edx
push eax
push esi
call fcn.004b5d90
lea eax, [esp + 0x20]
mov edx, 1
push eax
mov eax, dword [0x577c38]
mov ecx, eax
sub ecx, esi
sar ecx, 2
sub edx, ecx
mov ecx, 0x577c30
push edx
push eax
call fcn.004b5dc0
mov ecx, dword [0x577c38]
mov eax, esi
cmp esi, ecx
je 0x4b5a9a
mov edx, dword [esp + 0x20]
mov dword [eax], edx
add eax, edi
cmp eax, ecx
jne 0x4b5a4f
jmp 0x4b5a9a
push eax
push eax
add eax, 0xfffffffc
mov ecx, 0x577c30
push eax
call fcn.004b5d90
mov eax, dword [0x577c38]
mov ecx, eax
add eax, 0xfffffffc
cmp esi, eax
je 0x4b5a87
sub eax, edi
sub ecx, edi
cmp eax, esi
mov edx, dword [eax]
mov dword [ecx], edx
jne 0x4b5a7b
lea eax, [esi + 4]
cmp esi, eax
je 0x4b5a9a
mov ecx, dword [esp + 0x20]
mov dword [esi], ecx
add esi, edi
cmp esi, eax
jne 0x4b5a8e
add dword [0x577c38], edi
push 0x577c18
call dword [sym.imp.KERNEL32.dll_LeaveCriticalSection]
mov edx, dword [esp + 0x20]
mov eax, dword [edx + 0x20]
push eax
call dword [sym.imp.KERNEL32.dll_ResumeThread]
mov ecx, dword [esp + 0x20]
push 0
push 0x14
mov edx, dword [ecx + 0x28]
push edx
call dword [sym.imp.KERNEL32.dll_ReleaseSemaphore]
pop edi
pop esi
pop ebp
mov eax, 1
pop ebx
add esp, 8
ret