Function at 0x4c7720
Capabilities:
Read file on windows
Write file on windows

Disassembly:
push ebp
mov ebp, esp
add esp, 0xffffffa0
mov eax, dword [ebp + 8]
mov edx, dword [eax]
cmp edx, 3
jne 0x4c7760
push 0
push 0
push 3
push 0
push 3
push SysReAllocStringLen
mov ecx, dword [ebp + 8]
add ecx, 0x124
push ecx
call sub.KERNEL32.DLL_CreateFileA
mov dword [ebp - 0x40], eax
mov eax, dword [ebp - 0x40]
cmp eax, 0xffffffff
jne 0x4c7766
xor eax, eax
jmp 0x4c7ac5
mov edx, dword [ebp + 0xc]
mov dword [ebp - 0x40], edx
mov ecx, dword [ebp + 8]
mov eax, dword [ecx + 0x258]
mov dword [ebp - 8], eax
mov eax, dword [ecx + 0x25c]
mov dword [ebp - 4], eax
push 0
lea edx, [ebp - 4]
push edx
push dword [ebp - 8]
push dword [ebp - 0x40]
call sub.KERNEL32.DLL_SetFilePointer
mov dword [ebp - 0xc], eax
mov ecx, dword [ebp - 0xc]
cmp ecx, 0xffffffff
jne 0x4c77b9
call sub.KERNEL32.DLL_GetLastError
test eax, eax
je 0x4c77b9
mov eax, dword [ebp + 8]
mov edx, dword [eax]
cmp edx, 3
jne 0x4c77b2
push dword [ebp - 0x40]
call sub.KERNEL32.DLL_CloseHandle
xor eax, eax
jmp 0x4c7ac5
mov edx, dword [ebp + 8]
mov eax, dword [edx + 0xc]
cdq
push edx
push eax
mov ecx, dword [ebp + 8]
mov eax, dword [ecx + 0xc]
dec eax
cdq
mov ecx, dword [ebp + 8]
add eax, dword [ecx + 0x260]
adc edx, dword [ecx + 0x264]
call fcn.0067499b
mov dword [ebp - 0x1c], eax
mov edx, dword [ebp + 8]
mov eax, 0x12000
mov ecx, dword [edx + 0xc]
cdq
idiv ecx
mov dword [ebp - 0x24], eax
mov eax, dword [ebp + 8]
mov edx, dword [eax + 0xc]
imul edx, dword [ebp - 0x24]
mov dword [ebp - 0x2c], edx
imul ecx, dword [ebp - 0x24], 0x930
mov dword [ebp - 0x28], ecx
mov eax, dword [ebp + 8]
mov edx, dword [eax + 0x238]
mov dword [ebp - 0x3c], edx
jmp 0x4c7a9a
mov ecx, dword [ebp - 0x1c]
mov eax, dword [ebp - 0x24]
cmp ecx, eax
jl 0x4c795d
mov edx, dword [ebp + 8]
mov ecx, dword [edx + 0xc]
cmp ecx, 0x930
jne 0x4c784e
push 0
lea eax, [ebp - 0x14]
push eax
push dword [ebp - 0x28]
push 0x8685f8
push dword [ebp - 0x40]
call sub.KERNEL32.DLL_ReadFile
jmp 0x4c78b1
push 0
lea edx, [ebp - 0x14]
push edx
push dword [ebp - 0x2c]
push 0x8565f8
push dword [ebp - 0x40]
call sub.KERNEL32.DLL_ReadFile
mov dword [ebp - 0x34], 0x8565f8
mov dword [ebp - 0x30], 0x8685f8
xor ecx, ecx
mov dword [ebp - 0x20], ecx
mov eax, dword [ebp - 0x20]
mov edx, dword [ebp - 0x24]
cmp eax, edx
jge 0x4c78b1
push 0x930
push dword [ebp - 0x34]
push dword [ebp - 0x30]
call fcn.0066cc18
add esp, 0xc
add dword [ebp - 0x30], 0x930
mov ecx, dword [ebp + 8]
mov eax, dword [ecx + 0xc]
add dword [ebp - 0x34], eax
inc dword [ebp - 0x20]
mov edx, dword [ebp - 0x20]
mov ecx, dword [ebp - 0x24]
cmp edx, ecx
jl 0x4c7881
push 0
lea eax, [ebp - 0x18]
push eax
push dword [ebp - 0x28]
push 0x8685f8
push dword [ebp + 0x10]
call sub.KERNEL32.DLL_WriteFile
mov eax, dword [ebp - 0x2c]
cdq
add dword [0x833f58], eax
adc dword [0x833f5c], edx
mov eax, dword [0x833f58]
mov edx, dword [0x833f5c]
mov dword [ebp - 0x48], eax
sub edx, 0x80000000
mov dword [ebp - 0x44], edx
fild qword [ebp - 0x48]
fadd qword [0x4c7acc]
mov eax, dword [0x833f50]
mov edx, dword [0x833f54]
mov dword [ebp - 0x50], eax
sub edx, 0x80000000
mov dword [ebp - 0x4c], edx
fild qword [ebp - 0x50]
fadd qword [0x4c7acc]
fdivp st(1)
add esp, 0xfffffff8
fstp qword [esp]
call fcn.00441458
add esp, 8
mov ecx, dword [0x6fb15c]
test ecx, ecx
je 0x4c794c
mov eax, dword [ebp + 8]
mov edx, dword [eax]
cmp edx, 3
jne 0x4c7945
push dword [ebp - 0x40]
call sub.KERNEL32.DLL_CloseHandle
xor eax, eax
jmp 0x4c7ac5
mov edx, dword [ebp - 0x24]
sub dword [ebp - 0x1c], edx
mov ecx, dword [ebp - 0x24]
add dword [ebp - 0x3c], ecx
jmp 0x4c7a9a
mov eax, dword [ebp + 8]
mov edx, dword [eax + 0xc]
imul edx, dword [ebp - 0x1c]
mov dword [ebp - 0x2c], edx
imul ecx, dword [ebp - 0x1c], 0x930
mov dword [ebp - 0x28], ecx
mov eax, dword [ebp + 8]
mov edx, dword [eax + 0xc]
cmp edx, 0x930
jne 0x4c799a
push 0
lea ecx, [ebp - 0x14]
push ecx
push dword [ebp - 0x28]
push 0x8685f8
push dword [ebp - 0x40]
call sub.KERNEL32.DLL_ReadFile
jmp 0x4c79fd
push 0
lea eax, [ebp - 0x14]
push eax
push dword [ebp - 0x2c]
push 0x8565f8
push dword [ebp - 0x40]
call sub.KERNEL32.DLL_ReadFile
mov dword [ebp - 0x34], 0x8565f8
mov dword [ebp - 0x30], 0x8685f8
xor edx, edx
mov dword [ebp - 0x20], edx
mov ecx, dword [ebp - 0x20]
mov eax, dword [ebp - 0x24]
cmp ecx, eax
jge 0x4c79fd
push 0x930
push dword [ebp - 0x34]
push dword [ebp - 0x30]
call fcn.0066cc18
add esp, 0xc
add dword [ebp - 0x30], 0x930
mov edx, dword [ebp + 8]
mov ecx, dword [edx + 0xc]
add dword [ebp - 0x34], ecx
inc dword [ebp - 0x20]
mov eax, dword [ebp - 0x20]
mov edx, dword [ebp - 0x24]
cmp eax, edx
jl 0x4c79cd
push 0
lea ecx, [ebp - 0x18]
push ecx
push dword [ebp - 0x28]
push 0x8685f8
push dword [ebp + 0x10]
call sub.KERNEL32.DLL_WriteFile
mov eax, dword [ebp - 0x2c]
cdq
add dword [0x833f58], eax
adc dword [0x833f5c], edx
mov eax, dword [0x833f58]
mov edx, dword [0x833f5c]
mov dword [ebp - 0x58], eax
sub edx, 0x80000000
mov dword [ebp - 0x54], edx
fild qword [ebp - 0x58]
fadd qword [0x4c7acc]
mov eax, dword [0x833f50]
mov edx, dword [0x833f54]
mov dword [ebp - 0x60], eax
sub edx, 0x80000000
mov dword [ebp - 0x5c], edx
fild qword [ebp - 0x60]
fadd qword [0x4c7acc]
fdivp st(1)
add esp, 0xfffffff8
fstp qword [esp]
call fcn.00441458
add esp, 8
mov ecx, dword [0x6fb15c]
test ecx, ecx
je 0x4c7a95
mov eax, dword [ebp + 8]
mov edx, dword [eax]
cmp edx, 3
jne 0x4c7a91
push dword [ebp - 0x40]
call sub.KERNEL32.DLL_CloseHandle
xor eax, eax
jmp 0x4c7ac5
xor edx, edx
mov dword [ebp - 0x1c], edx
mov ecx, dword [ebp - 0x1c]
test ecx, ecx
jle 0x4c7aae
mov eax, dword [0x6fb15c]
test eax, eax
je 0x4c781a
mov edx, dword [ebp + 8]
mov ecx, dword [edx]
cmp ecx, 3
jne 0x4c7ac0
push dword [ebp - 0x40]
call sub.KERNEL32.DLL_CloseHandle
mov eax, 1
mov esp, ebp
pop ebp
ret