Function at 0x549d60
Capabilities:
Get file size
Read file on windows
Set registry value

Disassembly:
push ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x5adaa8
mov eax, dword fs:[0]
push eax
mov dword fs:[0], esp
sub esp, 0x4c4
push ebx
push esi
push edi
mov ebx, ecx
xor esi, esi
mov dword [ebp - 0x10], esp
mov dword [ebp - 0x18], ebx
mov dword [ebp - 4], esi
call fcn.00549c90
cmp dword [0x66263c], esi
jne 0x549dc9
mov eax, dword [0x662638]
cmp eax, esi
jne 0x549db8
push str.Urlmon.dll
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
cmp eax, esi
mov dword [0x662638], eax
je 0x549dc9
push str.FindMimeFromData
push eax
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
mov dword [0x66263c], eax
mov eax, dword [0x66263c]
mov byte [ebp - 0x11], 1
cmp eax, esi
mov byte [ebp - 0x12], 0
jne 0x549de6
cmp dword [0x662630], esi
je 0x54a254
mov eax, dword [ebp + 8]
push esi
push esi
push 3
push esi
push 3
push closesocket
push eax
call dword [sym.imp.KERNEL32.dll_CreateFileA]
mov edx, eax
cmp edx, 0xffffffff
mov dword [ebp - 0x24], edx
je 0x54a254
mov ecx, 0x40
xor eax, eax
lea edi, [ebp - 0x130]
push esi
rep stosd dword es:[edi], eax
lea ecx, [ebp - 0x20]
mov dword [ebp - 0x28], pe_nt_image_headers32
stosb byte es:[edi], al
push ecx
lea eax, [ebp - 0x130]
push pe_nt_image_headers32
push eax
push edx
mov dword [ebp - 0x20], esi
call dword [sym.imp.KERNEL32.dll_ReadFile]
cmp eax, esi
je 0x54a243
mov ecx, dword [ebp - 0x20]
cmp ecx, esi
jbe 0x54a243
mov eax, dword [0x66263c]
cmp eax, esi
je 0x549f82
lea edx, [ebp - 0x1c]
push esi
push edx
push esi
push esi
push ecx
lea ecx, [ebp - 0x130]
mov byte [ebp - 4], 1
push ecx
push esi
push esi
mov dword [ebp - 0x1c], esi
call eax
cmp eax, esi
jne 0x549f79
mov eax, dword [ebp - 0x1c]
cmp eax, esi
je 0x549f79
add ebx, 0xcc
push eax
mov ecx, ebx
mov byte [ebp - 0x11], 0
call fcn.00586ce3
mov edx, dword [ebp - 0x1c]
push edx
call dword [sym.imp.ole32.dll_CoTaskMemFree]
mov eax, dword [ebx]
push str.application_octet_stream
push eax
mov dword [ebp - 4], 1
call fcn.00573ec0
add esp, 8
test eax, eax
je 0x549ee8
mov eax, dword [ebx]
push str.text_plain
push eax
call fcn.00573ec0
add esp, 8
test eax, eax
je 0x549ee8
mov eax, dword [ebx]
push str.text_html
push eax
call fcn.00573ec0
add esp, 8
test eax, eax
jne 0x549ef4
cmp dword [0x662630], esi
je 0x549ef4
mov byte [ebp - 0x11], 1
mov eax, dword [ebx]
push str.application_octet_stream
push eax
call fcn.00573ec0
add esp, 8
test eax, eax
jne 0x549f79
cmp dword [ebp - 0x20], 7
jb 0x549f79
mov ecx, 3
mov edi, 0x63a204
lea esi, [ebp - 0x130]
xor eax, eax
repe cmpsb byte [esi], byte es:[edi]
jne 0x549f79
mov cl, byte [ebp - 0x12c]
mov al, 1
test cl, 0x80
je 0x549f33
xor al, al
test cl, 0x40
je 0x549f3a
xor al, al
test cl, 0x20
je 0x549f41
xor al, al
test cl, 0x10
je 0x549f48
xor al, al
test cl, 2
je 0x549f4f
xor al, al
mov cl, byte [ebp - 0x12d]
test cl, cl
je 0x549f79
cmp cl, 2
ja 0x549f79
test al, al
je 0x549f79
push str.video_x_flv
push 0x636fa0
push ebx
call fcn.0057f8fb
add esp, 0xc
mov byte [ebp - 0x11], 0
mov dword [ebp - 4], 0
xor esi, esi
cmp dword [0x662630], esi
je 0x54a243
mov al, byte [ebp - 0x11]
test al, al
je 0x54a243
mov ebx, dword [ebp - 0x24]
mov ecx, 0xa8
xor eax, eax
lea edi, [ebp - 0x3d0]
rep stosd dword es:[edi], eax
lea ecx, [ebp - 0x2c]
mov byte [ebp - 0x3d0], 1
push ecx
push ebx
mov dword [ebp - 0x1c], eax
call dword [sym.imp.KERNEL32.dll_GetFileSize]
mov esi, eax
cmp esi, 0xffffffff
jne 0x549fd5
call dword [sym.imp.KERNEL32.dll_GetLastError]
test eax, eax
jne 0x54a082
mov edx, dword [ebp - 0x2c]
push 1
push 0
push 0
push edx
call fcn.0056d280
xor ecx, ecx
add eax, esi
adc edx, ecx
js 0x54a082
jg 0x549ffd
cmp eax, 0x100
jbe 0x54a082
test edx, edx
jg 0x54a014
jl 0x54a00a
cmp eax, 0x1388
jae 0x54a014
mov edi, eax
jmp 0x54a019
mov edi, 0x1388
push edi
call fcn.00582ecc
mov esi, eax
add esp, 4
test esi, esi
je 0x54a085
push 0
push 0
push 0
push ebx
mov dword [ebp - 0x20], 0
call dword [sym.imp.KERNEL32.dll_SetFilePointer]
lea edx, [ebp - 0x20]
push 0
push edx
push edi
push esi
push ebx
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
je 0x54a074
mov eax, dword [ebp - 0x20]
test eax, eax
jbe 0x54a074
lea ecx, [ebp - 0x3d0]
push ecx
push 0
push eax
push esi
call dword [0x662630]
push esi
mov ebx, eax
call fcn.00582ef5
add esp, 4
jmp 0x54a0a4
mov ebx, dword [ebp - 0x1c]
push esi
call fcn.00582ef5
add esp, 4
jmp 0x54a0a4
mov edi, dword [ebp - 0x28]
mov eax, dword [ebp - 0x20]
lea edx, [ebp - 0x3d0]
push edx
push 0
lea ecx, [ebp - 0x130]
push eax
push ecx
call dword [0x662630]
mov dword [ebp - 0x1c], eax
mov ebx, eax
test ebx, ebx
je 0x54a0b1
cmp ebx, 0xffffffff
je 0x54a0b1
mov byte [ebp - 0x11], 0
cmp ebx, 3
jne 0x54a11e
mov esi, dword [ebp - 0x18]
xor edx, edx
mov eax, dword [esi + 0x120]
mov ecx, dword [esi + 0x124]
cmp eax, edi
jne 0x54a0d9
cmp ecx, edx
jne 0x54a0d9
test ecx, ecx
jg 0x54a0e1
jl 0x54a0d9
test eax, eax
ja 0x54a0e1
cmp edi, 0x1388
jb 0x54a12d
mov ebx, 1
lea edi, [ebp - 0x2a3]
or ecx, 0xffffffff
xor eax, eax
repne scasb al, byte es:[edi]
not ecx
dec ecx
je 0x54a243
lea edx, [ebp - 0x2a3]
push 0x655898
push edx
call fcn.00573ec0
add esp, 8
test eax, eax
jne 0x54a146
push str.text_plain
jmp 0x54a1f4
cmp ebx, 1
je 0x54a0e6
cmp ebx, 2
je 0x54a0e6
jmp 0x54a243
push 0x660ff8
lea ecx, [esi + 0xcc]
mov byte [ebp - 0x12], 1
call fcn.00586cbc
jmp 0x54a243
lea ecx, [ebp - 0x2a3]
push 0x639aa4
push ecx
call fcn.00573ec0
add esp, 8
test eax, eax
je 0x54a1ef
lea edx, [ebp - 0x2a3]
push str.html
push edx
call fcn.00573ec0
add esp, 8
test eax, eax
je 0x54a1ef
mov edi, dword [ebp - 0x18]
mov esi, dword [edi + 0xa4]
cmp byte [esi], 0x2e
jne 0x54a189
inc esi
mov eax, dword [0x662634]
test eax, eax
je 0x54a1d2
lea eax, [ebp - 0x2a3]
push eax
push esi
call fcn.00573ec0
add esp, 8
test eax, eax
je 0x54a1d2
push 0
lea ecx, [ebp - 0x307]
push esi
push ecx
call dword [0x662634]
cmp eax, 1
jne 0x54a1d2
push esi
add edi, 0xcc
push str.idmcheckedtype__s
push edi
call fcn.0057f8fb
add esp, 0xc
jmp 0x54a205
lea edx, [ebp - 0x2a3]
add edi, 0xcc
push edx
push str.idmcheckedtype__s
push edi
call fcn.0057f8fb
add esp, 0xc
jmp 0x54a205
push str.text_html
mov eax, dword [ebp - 0x18]
add eax, 0xcc
push eax
call fcn.0057f8fb
add esp, 8
cmp ebx, 2
jne 0x54a243
mov ecx, dword [ebp - 0x18]
mov eax, dword [ecx + 0x144]
test ah, 1
je 0x54a243
mov eax, dword [ebp - 0x270]
lea edx, [ebp - 0x28]
push 4
push edx
mov dword [ecx + 0x2c4], eax
mov dword [ebp - 0x28], eax
mov eax, dword [ecx + 0x3a0]
push 4
push 0
push str.exLenToSkip
push eax
call dword [sym.imp.ADVAPI32.dll_RegSetValueExA]
mov ecx, dword [ebp - 0x24]
push ecx
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov al, byte [ebp - 0x11]
test al, al
je 0x54a2b1
lea ecx, [ebp - 0x24]
call fcn.0054ce70
mov edx, dword [ebp + 8]
lea ecx, [ebp - 0x24]
push edx
mov byte [ebp - 4], 5
call fcn.0054cfe0
mov ecx, dword [ebp + 0xc]
mov byte [ebp - 4], 0
mov dword [ecx], eax
lea ecx, [ebp - 0x24]
call fcn.0054cea0
mov al, byte [ebp - 0x12]
test al, al
jne 0x54a298
mov eax, dword [ebp - 0x18]
mov byte [eax + 0x2aa], 1
mov dword [eax + 0xb0], 3
mov ecx, dword [ebp - 0xc]
pop edi
pop esi
mov dword fs:[0], ecx
pop ebx
mov esp, ebp
pop ebp
ret 8
mov al, byte [ebp - 0x12]
test al, al
jne 0x54a298
mov esi, dword [ebp - 0x18]
or ecx, 0xffffffff
xor eax, eax
mov edx, dword [esi + 0xcc]
mov edi, edx
repne scasb al, byte es:[edi]
not ecx
dec ecx
je 0x54a284
push str.text_html
push edx
call fcn.00573ec0
mov edx, dword [ebp + 0xc]
add esp, 8
neg eax
sbb eax, eax
inc eax
mov dword [edx], eax
jne 0x54a284
mov eax, dword [esi + 0x3c]
test eax, eax
jne 0x54a2f9
test byte [esi + 0x144], 8
je 0x54a284
mov ebx, dword [esi + 0xa4]
or ecx, 0xffffffff
mov edi, ebx
xor eax, eax
repne scasb al, byte es:[edi]
not ecx
dec ecx
je 0x54a284
cmp byte [ebx], 0x2e
jne 0x54a317
inc ebx
mov edi, ebx
or ecx, 0xffffffff
xor eax, eax
lea edx, [ebp - 0x4d0]
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov eax, ecx
mov esi, edi
mov edi, edx
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, eax
and ecx, 3
rep movsb byte es:[edi], byte [esi]
lea ecx, [ebp - 0x4d0]
push ecx
call fcn.0056d814
push 0x655898
push ebx
call fcn.00573ec0
add esp, 0xc
test eax, eax
je 0x54a284
lea edx, [ebp - 0x4d0]
push edx
push str.3GP_7Z_AAC_ACE_AIF_ARJ_ASF_AVI_BIN_BZ2_DOC_DOCX_EXE_FLV_GZ_GZIP_IMG_ISO_LZH_M4A_M4V_MKV_MOV_MP3_MP4_MPA_MPE_MPEG_MPG_MSI_MSU_OGG_OGV_PDF_PLJ_PPS_PPT_QT_R0_R1_RA_RAR_RM_SEA_SIT_SITX_TAR_TIF_TIFF_WAV_WEBM_WMA_WMV_Z_ZIP
call fcn.0056ab30
add esp, 8
test eax, eax
je 0x54a284
mov eax, dword [ebp - 0x18]
push str.text_plain
mov eax, dword [eax + 0xcc]
push eax
call fcn.00573ec0
mov ecx, dword [ebp + 0xc]
add esp, 8
neg eax
sbb eax, eax
inc eax
mov dword [ecx], eax
jmp 0x54a284