Function at 0x4205c0
Capabilities:
Check if file exists
Get file size
Hash data with md5
Read file on windows

Disassembly:
push ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x59eaa0
mov eax, dword fs:[0]
push eax
sub esp, 0xf4
mov eax, dword [0x627a40]
xor eax, ebp
mov dword [ebp - 0x10], eax
push ebx
push esi
push edi
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
mov edi, ecx
mov dword [ebp - 0xf4], edi
mov dword [ebp - 0xf8], edi
mov dword [ebp - 0xfc], 0
xor eax, eax
mov dword [ebp - 4], 0
push eax
push 0x619488
lea ecx, [ebp - 0x28]
mov dword [ebp - 0x14], 7
mov dword [ebp - 0x18], 0
add bh, al
inc ebp
call 0x420626
mov word [ebp - 0x28], ax
call fcn.00403d10
mov byte [ebp - 4], 1
mov byte [ebp - 0x5b], 0
mov dword [ebp - 0xd0], 0
mov dword [ebp - 0xd4], 0
mov dword [ebp - 0xe4], 0x67452301
mov dword [ebp - 0xe0], 0xefcdab89
mov dword [ebp - 0xdc], 0x98badcfe
mov dword [ebp - 0xd8], 0x10325476
call fcn.00436010
test al, al
je 0x42068c
lodsd eax, dword [esi]
and eax, 0x7d6daf23
jl 0x42061e
int1
inc ebp
xchg ecx, eax
push ss
ror eax, 0x8a
mov al, 0x83
jge 0x4206ab
cmp dword [ebp + 0x1c], 8
lea eax, [ebp + 8]
cmovae eax, dword [ebp + 8]
push eax
call dword [sym.imp.SHLWAPI.dll_PathFileExistsW]
or byte [ebp + 0x430f0845], cl
inc ebp
or byte [eax - 1], dl
adc eax, sym.imp.SHLWAPI.dll_PathFileExistsW
test eax, eax
je 0x42098a
cmp dword [ebp + 0x1c], 8
lea eax, [ebp + 8]
push 0
inc ebp
or byte [edx], ch
cmovae eax, dword [ebp + 8]
push 0x80
push 4
push 0
push 1
push bind
push eax
call dword [sym.imp.KERNEL32.dll_CreateFileW]
mov ebx, eax
mov dword [ebp - 0xe8], ebx
cmp ebx, 0xffffffff
jne 0x42071f
push 0x619488
mov ecx, edi
call fcn.004039f0
mov eax, dword [ebp - 0x14]
cmp eax, 8
jb 0x4206f8
inc eax
lea ecx, [ebp - 0x28]
push eax
push dword [ebp - 0x28]
call fcn.00404090
mov ecx, dword [ebp + 0x1c]
xor eax, eax
mov dword [ebp - 0x14], 7
mov dword [ebp - 0x18], 0
mov word [ebp - 0x28], ax
cmp ecx, 8
jb 0x4209e6
fadd dword [ebx - 0x7df0f707]
into
add al, byte [eax]
add byte [ecx + 0x51], al
inc ecx
push ecx
jmp 0x4209db
call fcn.00436160
test al, al
je 0x42073e
push ds
jg 0x42077f
out 0x88, al
push ebp
fcom qword [edi + 0x27]
popal
push ecx
push edi
sti
jae 0x42070e
jl 0x4206c4
mov ebp, 0xffffff0c
push 0
push ebx
call dword [sym.imp.KERNEL32.dll_GetFileSize]
mov dword [ebp - 0xec], eax
inc eax
push eax
mov dword [ebp - 0xf8], eax
call fcn.005713c7
add esp, 4
mov dword [ebp - 0xf0], eax
test eax, eax
jne 0x420788
push 0x619488
mov ecx, edi
call fcn.004039f0
lea ecx, [ebp - 0x28]
call fcn.00402d00
lea ecx, [ebp + 8]
call fcn.00402d00
jmp 0x4209e6
jge 0x4207a6
invalid
call fcn.00436860
test al, al
je 0x4207ae
mov bl, 0xa8
jle 0x4207b6
mov eax, dword [0x55c51f7a]
cld
sub cl, byte [eax]
xchg edx, eax
mov dh, 0x43
pop edx
push eax
jmp 0x22504500
and dh, byte [ebp + eax + 0x47c20dce]
mov cl, 0xe8
jge 0x420808
call fcn.00435f30
add dword [eax], eax
test al, al
je 0x4207d5
push ds
test eax, 0xf11d7141
xor dword [ebx - 0x6c], edx
insb byte es:[edi], dx
daa
sbb esp, dword [ebx + 0x24337d65]
adc eax, 0x32f18ca5
add dword [esi + 0x16], eax
rcl dword [esi + 1], 0xc0
hlt
push dword [ebp - 0xf8]
mov esi, dword [ebp - 0xf0]
push 0
push esi
call fcn.00576f50
add esp, 0xc
lea eax, [ebp - 0x100]
push 0
push eax
push dword [ebp - 0xec]
push esi
push dword [ebp - 0xe8]
call dword [sym.imp.KERNEL32.dll_ReadFile]
call fcn.00436780
test al, al
je 0x420828
call 0xd06bb81e
mov dl, 0xf6
das
insb byte es:[edi], dx
les ebp, [0x8b06fc18]
add eax, 0xca70ed7c
pop ds
mov ss, word [ebx]
call fcn.00436400
test al, al
je 0x420849
push es
rol byte [ebp - 0x3dec9bf1], cl
xchg ecx, eax
int 0x9f
jmp 0x17753da5
call fcn.00435de0
test al, al
je 0x42086a
inc edx
leave
sub esp, ebx
cmp ecx, dword [ecx + 0xe]
cmp eax, 0xfdb52279
inc esi
loop 0x4207e9
ror ebp, 1
mov dh, byte [edx]
push ecx
push eax
mov dh, 0xb7
push dword [ebp - 0xe8]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
push dword [ebp - 0xec]
mov ebx, dword [ebp - 0xf0]
lea ecx, [ebp - 0xe4]
push ebx
call fcn.004062c0
push ebx
call fcn.00570efb
add esp, 4
call fcn.00436710
test al, al
je 0x4208b2
sub dh, dl
leave
nop
or al, 0x74
in al, 0x48
xor edx, dword [ebp - 0x5623f89f]
mov edx, dword [edi - 0x63]
inc edi
lea eax, [ebp - 0x40]
push eax
lea ecx, [ebp - 0xe4]
call fcn.00406d70
mov edx, eax
mov byte [ebp - 4], 2
lea ecx, [ebp - 0x58]
call fcn.00427e50
mov byte [ebp - 4], 4
mov eax, dword [ebp - 0x2c]
cmp eax, 0x10
jb 0x4208e8
inc eax
lea ecx, [ebp - 0x40]
push eax
push dword [ebp - 0x40]
call fcn.00407760
mov dword [ebp - 0x2c], 0xf
mov dword [ebp - 0x30], 0
mov byte [ebp - 0x40], 0
call fcn.004366a0
test al, al
je 0x420917
inc ebx
pop es
ljmp 0xca6c
call fcn.00436400
test al, al
je 0x42093e
inc esi
invalid
call fcn.004364e0
test al, al
je 0x420966
dec ebx
invalid
cmp dword [ebp - 0x48], 0
jbe 0x42097c
push 0xffffffffffffffff
push 0
lea eax, [ebp - 0x58]
push eax
lea ecx, [ebp - 0x28]
call fcn.00403e10
lea ecx, [ebp - 0x58]
call fcn.00402d00
mov edi, dword [ebp - 0xf4]
xor eax, eax
mov dword [edi + 0x14], 7
mov dword [edi + 0x10], 0
mov ecx, edi
mov word [edi], ax
lea eax, [ebp - 0x28]
push eax
call fcn.00403f30
mov eax, dword [ebp - 0x14]
cmp eax, 8
jb 0x4209bd
inc eax
lea ecx, [ebp - 0x28]
push eax
push dword [ebp - 0x28]
call fcn.00404090
xor eax, eax
mov dword [ebp - 0x14], 7
mov word [ebp - 0x28], ax
mov eax, dword [ebp + 0x1c]
mov dword [ebp - 0x18], 0
cmp eax, 8
jb 0x4209e6
inc eax
push eax
push dword [ebp + 8]
lea ecx, [ebp + 8]
call fcn.00404090
mov eax, edi
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebx
mov ecx, dword [ebp - 0x10]
xor ecx, ebp
call fcn.00570ea9
mov esp, ebp
pop ebp
ret