Function at 0x12fd5c10
Capabilities:
Get file size
Read file on windows
Resolve function by parsing pe exports
Write file on windows

Disassembly:
push 0xffffffffffffffff
push 0x13071a4b
mov eax, dword fs:[0]
push eax
mov dword fs:[0], esp
sub esp, 0xbc
push ebx
push ebp
mov ebp, dword [esp + 0xe4]
push esi
xor esi, esi
push edi
cmp word [ebp + 0xa], si
mov dword [esp + 0x60], esi
jne 0x12fd6606
mov ecx, 0xf
xor eax, eax
lea edi, [esp + 0x8d]
mov byte [esp + 0x8c], 0
rep stosd dword es:[edi], eax
stosw word es:[edi], ax
stosb byte es:[edi], al
lea eax, [esp + 0x6c]
lea ecx, [esp + 0x58]
push eax
lea edx, [esp + 0x54]
push ecx
lea eax, [esp + 0x2c]
push edx
push eax
mov eax, dword [esp + 0xf8]
xor edx, edx
lea ecx, [esp + 0x9c]
push 0x40
mov dl, byte [eax + 0x17]
push ecx
mov ecx, dword [eax + 0x1c]
push edx
mov edx, dword [eax + 0x30]
push ecx
push edx
mov dword [esp + 0x74], esi
mov dword [esp + 0x7c], esi
mov dword [esp + 0x48], esi
mov dword [esp + 0x90], esi
call fcn.12fd7e60
mov edi, eax
add esp, 0x24
cmp edi, esi
mov dword [esp + 0x74], edi
je 0x12fd661c
push edi
call fcn.12ff0660
mov ebx, eax
add esp, 4
cmp ebx, esi
mov dword [esp + 0x64], ebx
je 0x12fd6632
cmp edi, 9
mov eax, 1
je 0x12fd5cf7
cmp edi, 0xc
je 0x12fd5cf7
cmp edi, 0xe
je 0x12fd5cf7
cmp edi, 0xf
je 0x12fd5cf7
cmp edi, 0x10
je 0x12fd5cf7
cmp edi, 0x11
jne 0x12fd5cf9
xor eax, eax
mov ecx, dword [esp + 0xdc]
mov word [ebp + 8], ax
lea eax, [esp + 0x4c]
mov dword [esp + 0x4c], esi
push eax
push ecx
call dword [sym.imp.KERNEL32.dll_GetFileSize]
mov edx, dword [esp + 0x4c]
mov edi, eax
mov eax, dword [esp + 0xe0]
push edx
push edi
push eax
call fcn.12fee810
add esp, 0xc
test eax, eax
je 0x12fd6648
mov edx, dword [ebx]
push 0x1000
mov ecx, ebx
call dword [edx + 8]
mov cx, word [ebp + 8]
xor edx, edx
cmp cx, si
jne 0x12fd5d4f
mov edx, eax
jmp 0x12fd5d63
cmp cx, 1
jne 0x12fd5d5a
lea edx, [eax + 4]
jmp 0x12fd5d63
cmp cx, 2
jne 0x12fd5d63
lea edx, [eax + 8]
mov eax, dword [esp + 0xfc]
mov ebx, dword [esp + 0xe4]
mov dword [esp + 0x38], edx
mov dword [eax], 1
mov eax, dword [esp + 0x50]
cmp eax, esi
je 0x12fd5d8b
mov eax, dword [ebx + 0x24]
or al, 0x10
mov dword [ebx + 0x24], eax
cmp dword [esp + 0x58], esi
je 0x12fd5d99
mov eax, dword [ebx + 0x24]
or al, 0x20
mov dword [ebx + 0x24], eax
cmp dword [esp + 0xdc], 0xffffffff
jne 0x12fd5dc2
mov dword [0x131c96c0], 1
mov dword [0x131c96c4], 0x2a35
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov dword [0x131c96c8], eax
mov eax, dword [esp + 0xe8]
xor ecx, ecx
xor edx, edx
xor esi, esi
mov dword [eax + 8], ecx
mov dword [eax + 0xc], ecx
mov eax, dword [esp + 0x4c]
or edx, edi
or eax, esi
mov dword [ebp + 0x10], edx
mov dword [ebp + 0x14], eax
mov edx, dword [ebp + 0x10]
mov esi, eax
mov eax, edx
and eax, 0xfff
mov edi, eax
or edi, ecx
je 0x12fd5e25
test esi, esi
ja 0x12fd5e01
cmp edx, 0x1000
jbe 0x12fd5e09
mov edi, eax
mov dword [esp + 0x7c], ecx
jmp 0x12fd5e0f
mov edi, edx
mov dword [esp + 0x7c], esi
mov eax, edx
mov ecx, esi
sub eax, edi
mov edi, dword [esp + 0x7c]
sbb ecx, edi
add eax, 0x1000
adc ecx, 0
jmp 0x12fd5e29
mov eax, edx
mov ecx, esi
mov dword [ebp + 0x20], edx
mov dword [ebp + 0x24], esi
mov esi, dword [esp + 0xe8]
mov dword [ebp + 0x18], eax
mov eax, dword [esp + 0x24]
mov dword [ebp + 0x1c], ecx
mov ecx, dword [esp + 0x74]
lea edx, [esi + 0x38]
mov dword [esi + 0x34], ecx
push edx
lea ecx, [esp + 0x90]
push eax
push ecx
call fcn.12fedb10
mov edx, dword [esp + 0x78]
mov ecx, dword [esp + 0x104]
add esp, 0xc
mov dword [esi + 0x4c], edx
xor edi, edi
call fcn.12f925b0
test eax, eax
jbe 0x12fd5e7a
mov edi, 1
mov ecx, dword [esp + 0x100]
call fcn.12f925b0
test eax, eax
jbe 0x12fd5e8b
inc edi
mov ecx, dword [esp + 0xf8]
call fcn.12f925b0
mov ecx, dword [esp + 0x100]
mov esi, eax
call fcn.12f925b0
add esi, eax
xor eax, eax
cmp eax, esi
lea ecx, [edi + edi*4]
sbb eax, eax
mov edx, dword [esp + 0xe8]
and eax, esi
lea eax, [eax + ecx*8 + 0xd8]
xor ecx, ecx
mov dword [esp + 0x78], eax
add eax, 0xfff
shr eax, 0xc
shl eax, 0xc
mov dword [esp + 0x88], eax
mov dword [edx + 0x24], eax
mov eax, dword [esp + 0x38]
mov dword [ebp + 0x28], ecx
mov dword [ebp + 0x2c], eax
xor eax, eax
mov ax, word [ebp + 8]
mov dword [ebp + 0x30], ecx
sub eax, ecx
mov dword [ebp + 0x34], 0x1000
je 0x12fd5f0d
dec eax
je 0x12fd5f06
dec eax
jne 0x12fd5f0f
mov ecx, 8
jmp 0x12fd5f0f
mov ecx, 4
jmp 0x12fd5f0f
xor ecx, ecx
mov edi, dword [sym.imp.KERNEL32.dll_SetFilePointer]
mov word [ebp + 6], cx
mov ecx, dword [esp + 0xdc]
push 0
push 0
push 0
push ecx
call edi
mov edx, dword [esp + 0xe0]
push 0
push 0
push 0
push edx
call edi
mov edx, dword [ebx + 0x24]
mov ecx, dword [esp + 0x100]
or edx, 1
mov dword [ebx + 0x24], edx
call fcn.12f925b0
mov esi, eax
mov dword [0x131c96c0], 0
neg esi
sbb esi, esi
inc esi
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov ecx, dword [esp + 0xe0]
mov dword [0x131c96c8], eax
lea eax, [esp + 0x20]
push 1
push eax
push 0
push ecx
mov dword [esp + 0x30], 0
call edi
mov edx, dword [esp + 0xe0]
push 0
push 0
push 0
push edx
mov dword [esp + 0x3c], eax
call edi
mov ecx, dword [0x13182bc0]
mov eax, ebx
test esi, esi
mov dword [eax], ecx
mov edx, dword [0x13182bc4]
mov dword [esp + 0x1c], 0
mov dword [eax + 4], edx
mov ecx, dword [0x13182bc8]
mov dword [eax + 8], ecx
mov edx, dword [0x13182bcc]
mov word [ebx + 0x30], 0x40
mov dword [eax + 0xc], edx
je 0x12fd5fd9
mov dword [ebx + 0x20], 0x40001
jmp 0x12fd5fe0
mov dword [ebx + 0x20], 0x40002
mov esi, 0x50
push 0x40
push ebx
mov word [ebx + 0x3e], si
mov dword [ebx + 0x34], 0
call fcn.12fedaf0
push ebx
mov dword [ebx + 0x34], eax
call fcn.12fdaba0
add esp, 0xc
test eax, eax
je 0x12fd605d
mov eax, dword [ebx + 0x20]
cmp eax, 0x40001
je 0x12fd6019
cmp eax, 0x40002
jne 0x12fd605d
cmp word [ebx + 0x3e], si
jne 0x12fd605d
mov esi, dword [ebx + 0x34]
mov dword [ebx + 0x34], 0
push esi
push 0x40
push ebx
call fcn.12fedaa0
add esp, 0xc
mov dword [ebx + 0x34], esi
test eax, eax
je 0x12fd605d
mov esi, dword [esp + 0xe0]
push 0x40
push ebx
push esi
call fcn.12fd4b60
add esp, 0xc
test eax, eax
je 0x12fd6064
mov dword [esp + 0x1c], 1
jmp 0x12fd6064
mov esi, dword [esp + 0xe0]
mov ecx, dword [esp + 0x2c]
lea eax, [esp + 0x20]
push 0
push eax
push ecx
push esi
call edi
mov eax, dword [esp + 0x1c]
test eax, eax
jne 0x12fd60b4
mov esi, dword [sym.imp.KERNEL32.dll_GetLastError]
mov edi, 0x10
mov dword [0x131c96c0], edi
mov dword [0x131c96c4], 0x330c
call esi
mov dword [0x131c96c8], eax
mov dword [0x131c96c0], edi
mov dword [0x131c96c4], 0x254f
call esi
jmp 0x12fd6678
mov edx, dword [ebp + 0x10]
xor eax, eax
mov dword [esp + 0x20], eax
mov dword [esp + 0x14], eax
or edx, dword [ebp + 0x14]
jne 0x12fd60ed
mov eax, dword [esp + 0xe8]
push 0
push 0
mov ecx, dword [eax + 0x24]
push ecx
push esi
call edi
mov dword [esp + 0x20], 1
mov dword [esp + 0x14], 0
jmp 0x12fd64d2
mov ebx, dword [0x13182bbc]
mov esi, ebx
push ebx
shr esi, 0xc
imul esi, dword [esp + 0x3c]
mov dword [esp + 0x84], ebx
mov dword [esp + 0x88], esi
call fcn.12f5bf8b
push esi
mov dword [esp + 0x3c], eax
call fcn.12f5bf8b
mov edx, dword [esp + 0xf0]
mov ecx, dword [esp + 0xe8]
add esp, 8
mov dword [esp + 0x28], eax
xor eax, eax
push eax
mov dword [esp + 0x1c], eax
mov dword [esp + 0x44], eax
push eax
mov eax, dword [edx + 0x24]
push eax
push ecx
call edi
mov edi, dword [esp + 0x34]
mov ecx, ebx
mov edx, ecx
xor eax, eax
shr ecx, 2
rep stosd dword es:[edi], eax
mov ecx, edx
push 0
and ecx, 3
mov dword [esp + 0x48], 0
rep stosb byte es:[edi], al
mov edi, dword [esp + 0x2c]
mov ecx, esi
mov edx, ecx
xor eax, eax
shr ecx, 2
rep stosd dword es:[edi], eax
mov ecx, edx
mov edx, dword [esp + 0xe0]
and ecx, 3
rep stosb byte es:[edi], al
mov ecx, dword [esp + 0x38]
lea eax, [esp + 0x48]
push eax
push ebx
push ecx
push edx
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
je 0x12fd6433
mov ecx, dword [esp + 0x44]
test ecx, ecx
je 0x12fd6449
mov eax, ecx
shr eax, 0xc
test ecx, 0xfff
mov dword [esp + 0x1c], eax
je 0x12fd61bc
inc eax
mov dword [esp + 0x1c], eax
mov eax, dword [esp + 0x1c]
mov ecx, dword [esp + 0x28]
mov ebx, dword [esp + 0x34]
mov dword [esp + 0x68], eax
lea edx, [esp + 0x40]
mov dword [esp + 0x10], ecx
lea eax, [esp + 0x18]
push edx
lea ecx, [esp + 0x34]
push eax
lea edx, [esp + 0x40]
push ecx
mov ecx, dword [esp + 0x30]
lea eax, [esp + 0x1c]
push edx
push eax
mov eax, dword [esp + 0x78]
push 0x1000
push ebx
lea edx, [esp + 0xa8]
push ecx
mov cx, word [ebp + 8]
push edx
xor esi, esi
push eax
push ecx
mov dword [esp + 0x74], esi
mov dword [esp + 0x80], esi
mov dword [esp + 0x58], esi
mov dword [esp + 0x88], esi
mov dword [esp + 0x5c], esi
call fcn.12fd4c60
add esp, 0x2c
cmp eax, esi
jne 0x12fd6334
mov ax, word [ebp + 8]
mov ecx, dword [esp + 0x30]
xor esi, esi
and eax, 0xffff
sub eax, esi
mov edi, ecx
je 0x12fd6282
dec eax
je 0x12fd6268
dec eax
jne 0x12fd6284
mov eax, dword [esp + 0x10]
push ecx
mov esi, eax
add eax, 8
push eax
call fcn.12fedaf0
mov dword [esi + 4], eax
add esp, 8
lea esi, [edi + 8]
jmp 0x12fd6284
mov eax, dword [esp + 0x10]
push ecx
mov esi, eax
add eax, 4
push eax
call fcn.12fedaf0
mov dword [esi], eax
add esp, 8
lea esi, [edi + 4]
jmp 0x12fd6284
mov esi, ecx
mov ecx, dword [esp + 0x48]
mov eax, dword [esp + 0x5c]
add ecx, esi
test eax, eax
mov dword [esp + 0x48], ecx
jne 0x12fd62a2
mov dword [esp + 0x54], esi
mov dword [esp + 0x5c], 1
mov eax, dword [esp + 0x18]
mov dword [esp + 0x40], 0
test eax, eax
je 0x12fd62c3
push eax
call fcn.12f5bf80
add esp, 4
mov dword [esp + 0x18], 0
mov eax, dword [esp + 0x68]
dec eax
mov dword [esp + 0x68], eax
je 0x12fd63b8
lea edx, [esp + 0x40]
mov edi, dword [esp + 0x10]
lea eax, [esp + 0x18]
push edx
lea ecx, [esp + 0x34]
push eax
lea edx, [esp + 0x40]
push ecx
mov ecx, dword [esp + 0x30]
lea eax, [esp + 0x1c]
push edx
add ebx, 0x1000
push eax
mov eax, dword [esp + 0x78]
push 0x1000
push ebx
lea edx, [esp + 0xa8]
push ecx
mov cx, word [ebp + 8]
push edx
add edi, esi
push eax
push ecx
mov dword [esp + 0x3c], edi
mov dword [esp + 0x5c], 0
call fcn.12fd4c60
add esp, 0x2c
test eax, eax
je 0x12fd6232
xor esi, esi
cmp eax, esi
jge 0x12fd638f
push 0x131911a8
lea ecx, [esp + 0x40]
call fcn.12f46a80
mov edx, dword [esp + 0x24]
mov eax, dword [esp + 0x44]
mov ecx, dword [esp + 0x74]
push 0x2599
push edx
push eax
push ecx
lea edx, [esp + 0x4c]
push 0x13182948
push edx
mov dword [esp + 0xec], esi
call fcn.12f4a1a0
mov eax, dword [esp + 0x54]
push eax
call fcn.12ff1500
add esp, 0x1c
lea ecx, [esp + 0x3c]
mov dword [esp + 0xd4], 0xffffffff
call fcn.12f47220
mov dword [0x131c96c0], 0x11
mov dword [0x131c96c4], 0x259d
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov dword [0x131c96c8], eax
mov dword [esp + 0x14], 1
jmp 0x12fd63be
mov dword [esp + 0x2c], esi
xor esi, esi
mov eax, dword [esp + 0x14]
mov dword [esp + 0x10], esi
cmp eax, esi
jne 0x12fd6490
mov esi, dword [esp + 0x48]
mov edx, dword [esp + 0x28]
mov eax, dword [esp + 0xe0]
lea ecx, [esp + 0x70]
push 0
push ecx
push esi
push edx
push eax
mov dword [esp + 0x84], 0
call dword [sym.imp.KERNEL32.dll_WriteFile]
test eax, eax
je 0x12fd6453
cmp dword [esp + 0x70], esi
jb 0x12fd6469
mov eax, dword [ebp + 0x28]
test eax, eax
jne 0x12fd6410
mov ecx, dword [esp + 0x54]
mov dword [ebp + 0x2c], ecx
mov edx, dword [esp + 0x1c]
mov ebx, dword [esp + 0x80]
mov esi, dword [esp + 0x84]
add eax, edx
mov dword [ebp + 0x28], eax
mov eax, dword [esp + 0x2c]
mov dword [ebp + 0x30], eax
jmp 0x12fd6143
mov dword [0x131c96c0], 0xd
mov dword [0x131c96c4], 0x2577
jmp 0x12fd647d
mov dword [esp + 0x20], 1
jmp 0x12fd6490
mov dword [0x131c96c0], 0xe
mov dword [0x131c96c4], 0x25c9
jmp 0x12fd647d
mov dword [0x131c96c0], 0xe
mov dword [0x131c96c4], 0x25d1
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov dword [0x131c96c8], eax
mov dword [esp + 0x14], 1
mov eax, dword [esp + 0x34]
test eax, eax
je 0x12fd64a1
push eax
call fcn.12f5bf80
add esp, 4
mov eax, dword [esp + 0x28]
test eax, eax
je 0x12fd64b2
push eax
call fcn.12f5bf80
add esp, 4
mov eax, dword [esp + 0x18]
test eax, eax
je 0x12fd64cb
push eax
call fcn.12f5bf80
add esp, 4
mov dword [esp + 0x18], 0
mov ebx, dword [esp + 0xe4]
mov ecx, dword [esp + 0xe0]
push ecx
call dword [sym.imp.KERNEL32.dll_SetEndOfFile]
mov eax, dword [esp + 0x20]
test eax, eax
je 0x12fd667d
mov eax, dword [esp + 0x14]
test eax, eax
jne 0x12fd667d
mov edx, dword [esp + 0x88]
mov eax, dword [esp + 0x78]
mov ecx, dword [esp + 0xe0]
push edx
push eax
push ecx
mov dword [esp + 0x6c], 1
call fcn.12fde960
mov edi, dword [esp + 0x104]
add esp, 0xc
mov ecx, edi
xor esi, esi
call fcn.12f925b0
test eax, eax
je 0x12fd653a
mov ecx, edi
call fcn.12f92cb0
mov esi, eax
mov edi, dword [ebx + 0x24]
test esi, esi
jne 0x12fd6546
and edi, 0xffffffb1
jmp 0x12fd655e
push esi
or edi, 8
call fcn.12fd9630
add esp, 4
test eax, eax
je 0x12fd655b
and edi, 0xffffffbf
jmp 0x12fd655e
or edi, 0x40
cmp edi, dword [ebx + 0x24]
je 0x12fd6566
mov dword [ebx + 0x24], edi
mov edi, dword [esp + 0x100]
xor esi, esi
mov ecx, edi
call fcn.12f925b0
test eax, eax
je 0x12fd6583
mov ecx, edi
call fcn.12f92cb0
mov esi, eax
mov edx, dword [ebx + 0x24]
mov ecx, edx
and ch, 0xfe
test esi, esi
je 0x12fd65bf
mov al, byte [esi + 6]
cmp al, 1
je 0x12fd65a3
test al, al
je 0x12fd65a3
xor eax, eax
mov ah, byte [esi + 5]
mov edi, eax
jmp 0x12fd65a5
xor edi, edi
xor eax, eax
mov al, byte [esi + 4]
add eax, edi
mov edi, dword [esi]
lea eax, [eax + eax*4]
lea eax, [eax*4 + 8]
cmp edi, eax
jb 0x12fd65bf
or ch, 1
cmp ecx, edx
je 0x12fd65c6
mov dword [ebx + 0x24], ecx
mov ecx, dword [esp + 0x100]
mov edx, dword [esp + 0xf8]
mov eax, dword [esp + 0xf4]
push ecx
mov ecx, dword [esp + 0xf4]
push edx
mov edx, dword [esp + 0xf0]
push eax
mov eax, dword [esp + 0xec]
push ecx
push ebp
push edx
push ebx
push eax
call fcn.12fdbd10
add esp, 0x20
test eax, eax
je 0x12fd665e
jmp 0x12fd667d
mov dword [0x131c96c0], 1
mov dword [0x131c96c4], 0x24e2
jmp 0x12fd6672
mov dword [0x131c96c0], 0xb
mov dword [0x131c96c4], 0x24f8
jmp 0x12fd6672
mov dword [0x131c96c0], 0xc
mov dword [0x131c96c4], 0x2500
jmp 0x12fd6672
mov dword [0x131c96c0], 0x25
mov dword [0x131c96c4], 0x2512
jmp 0x12fd6672
mov dword [0x131c96c0], 0x10
mov dword [0x131c96c4], 0x260d
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov dword [0x131c96c8], eax
mov ecx, dword [esp + 0xcc]
mov eax, dword [esp + 0x60]
pop edi
pop esi
pop ebp
pop ebx
mov dword fs:[0], ecx
add esp, 0xc8
ret