Function at 0x403105
Capabilities:
Get file size
Write file on windows

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x28
push ebx
push esi
xor ebx, ebx
push edi
mov dword [ebp - 8], ebx
mov dword [ebp - 4], ebx
call dword [sym.imp.KERNEL32.dll_GetTickCount]
push 0x2004
mov esi, 0x85b0d8
push esi
add eax, 0x3e8
push ebx
mov dword [0x7eee20], eax
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameW]
push 3
push 0x80000000
push esi
call fcn.004058e8
mov edi, eax
mov dword [ebp - 0xc], edi
mov dword [0x40a010], edi
cmp edi, 0xffffffff
jne 0x40315f
mov eax, str.Error_launching_installer
jmp 0x403334
push esi
mov esi, 0x84b0b8
push esi
call fcn.00405aa2
push esi
call fcn.00405fff
push eax
push 0x85f0e0
call fcn.00405aa2
push ebx
push edi
call dword [sym.imp.KERNEL32.dll_GetFileSize]
cmp eax, ebx
mov dword [0x7b09fc], eax
mov esi, eax
jle 0x40327a
mov ebx, 0x42a138
mov eax, dword [0x7eee2c]
neg eax
sbb eax, eax
and eax, 0x7e00
add eax, 0x200
cmp esi, eax
mov edi, esi
jl 0x4031b3
mov edi, eax
push edi
push ebx
call fcn.00402e9e
test eax, eax
je 0x40333b
cmp dword [0x7eee2c], 0
jne 0x403245
push 0x1c
push ebx
lea eax, [ebp - 0x28]
push eax
call fcn.004058a4
mov eax, dword [ebp - 0x28]
test eax, 0xfffffff0
jne 0x403253
cmp dword [ebp - 0x24], 0xdeadbeef
jne 0x403253
cmp dword [ebp - 0x18], 0x74736e49
jne 0x403253
cmp dword [ebp - 0x1c], 0x74666f73
jne 0x403253
cmp dword [ebp - 0x20], 0x6c6c754e
jne 0x403253
or dword [ebp + 8], eax
mov eax, dword [ebp + 8]
mov ecx, dword [0x42a134]
and eax, 2
or dword [0x7eeea0], eax
mov eax, dword [ebp - 0x10]
cmp eax, esi
mov dword [0x7eee2c], ecx
jg 0x403343
test byte [ebp + 8], 8
jne 0x403237
test byte [ebp + 8], 4
jne 0x403278
inc dword [ebp - 4]
lea esi, [eax - 4]
cmp edi, esi
jbe 0x403253
mov edi, esi
jmp 0x403253
test byte [ebp + 8], 2
jne 0x403253
push 0
call fcn.00402e3a
pop ecx
cmp esi, dword [0x7b09fc]
jge 0x403268
push edi
push ebx
push dword [ebp - 8]
call fcn.00406723
mov dword [ebp - 8], eax
add dword [0x42a134], edi
sub esi, edi
test esi, esi
jg 0x403198
xor ebx, ebx
push 1
call fcn.00402e3a
pop ecx
cmp dword [0x7eee2c], ebx
je 0x403343
cmp dword [ebp - 4], ebx
je 0x4032bd
push dword [0x42a134]
call fcn.00402ed0
push 4
lea eax, [ebp + 8]
push eax
call fcn.00402e9e
test eax, eax
je 0x403343
mov eax, dword [ebp - 8]
cmp eax, dword [ebp + 8]
jne 0x403343
push dword [ebp - 0x14]
push 0x40
call dword [sym.imp.KERNEL32.dll_GlobalAlloc]
mov esi, eax
mov eax, dword [0x7eee2c]
add eax, 0x1c
push eax
call fcn.00402ed0
push dword [ebp - 0x14]
push esi
push ebx
push 0xffffffffffffffff
call fcn.00402ee7
cmp eax, dword [ebp - 0x14]
jne 0x403343
test byte [ebp - 0x28], 1
mov dword [0x7eeddc], esi
mov eax, dword [esi]
mov dword [0x7eee28], eax
je 0x403302
inc dword [0x7eee24]
push 8
pop ecx
lea eax, [esi + 0x44]
sub eax, 8
add dword [eax], esi
dec ecx
cmp ecx, ebx
jne 0x403308
push 1
push ebx
push ebx
push dword [ebp - 0xc]
call dword [sym.imp.KERNEL32.dll_SetFilePointer]
mov dword [esi + 0x3c], eax
push 0x40
add esi, 4
push esi
push 0x7eede0
call fcn.004058a4
xor eax, eax
pop edi
pop esi
pop ebx
leave
ret 4
push 1
call fcn.00402e3a
pop ecx
mov eax, str.Installer_integrity_check_has_failed._Common_causes_include_nincomplete_download_and_damaged_media._Contact_the_ninstallers_author_to_obtain_a_new_copy._n_nMore_information_at:_nhttp:__nsis.sf.net_NSIS_Error
jmp 0x403334