Function at 0x54b7f0
Capabilities:
Get file size
Read file on windows
Set registry value

Disassembly:
push ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x5af708
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 - 0x1c], ebx
mov dword [ebp - 4], esi
call fcn.0054b720
cmp dword [0x6647d4], esi
jne 0x54b859
mov eax, dword [0x6647d0]
cmp eax, esi
jne 0x54b848
push str.Urlmon.dll
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
cmp eax, esi
mov dword [0x6647d0], eax
je 0x54b859
push str.FindMimeFromData
push eax
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
mov dword [0x6647d4], eax
mov eax, dword [0x6647d4]
mov byte [ebp - 0x11], 1
cmp eax, esi
mov byte [ebp - 0x12], 0
jne 0x54b876
cmp dword [0x6647c8], esi
je 0x54bd6e
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 0x54bd6e
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 0x54bd5d
mov ecx, dword [ebp - 0x20]
cmp ecx, esi
jbe 0x54bd5d
mov eax, dword [0x6647d4]
cmp eax, esi
je 0x54ba12
lea edx, [ebp - 0x18]
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 - 0x18], esi
call eax
cmp eax, esi
jne 0x54ba09
mov eax, dword [ebp - 0x18]
cmp eax, esi
je 0x54ba09
add ebx, 0xcc
push eax
mov ecx, ebx
mov byte [ebp - 0x11], 0
call fcn.00588870
mov edx, dword [ebp - 0x18]
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.00575a20
add esp, 8
test eax, eax
je 0x54b978
mov eax, dword [ebx]
push str.text_plain
push eax
call fcn.00575a20
add esp, 8
test eax, eax
je 0x54b978
mov eax, dword [ebx]
push str.text_html
push eax
call fcn.00575a20
add esp, 8
test eax, eax
jne 0x54b984
cmp dword [0x6647c8], esi
je 0x54b984
mov byte [ebp - 0x11], 1
mov eax, dword [ebx]
push str.application_octet_stream
push eax
call fcn.00575a20
add esp, 8
test eax, eax
jne 0x54ba09
cmp dword [ebp - 0x20], 7
jb 0x54ba09
mov ecx, 3
mov edi, 0x63c23c
lea esi, [ebp - 0x130]
xor eax, eax
repe cmpsb byte [esi], byte es:[edi]
jne 0x54ba09
mov cl, byte [ebp - 0x12c]
mov al, 1
test cl, 0x80
je 0x54b9c3
xor al, al
test cl, 0x40
je 0x54b9ca
xor al, al
test cl, 0x20
je 0x54b9d1
xor al, al
test cl, 0x10
je 0x54b9d8
xor al, al
test cl, 2
je 0x54b9df
xor al, al
mov cl, byte [ebp - 0x12d]
test cl, cl
je 0x54ba09
cmp cl, 2
ja 0x54ba09
test al, al
je 0x54ba09
push str.video_x_flv
push 0x638fa8
push ebx
call fcn.0058148b
add esp, 0xc
mov byte [ebp - 0x11], 0
mov dword [ebp - 4], 0
xor esi, esi
cmp dword [0x6647c8], esi
je 0x54bd5d
mov al, byte [ebp - 0x11]
test al, al
je 0x54bd5d
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]
xor edi, edi
push ecx
push ebx
mov byte [ebp - 0x3d0], 1
mov dword [ebp - 0x18], edi
call dword [sym.imp.KERNEL32.dll_GetFileSize]
mov esi, eax
cmp esi, 0xffffffff
jne 0x54ba67
call dword [sym.imp.KERNEL32.dll_GetLastError]
test eax, eax
jne 0x54bb12
mov edx, dword [ebp - 0x2c]
push 1
push 0
push 0
push edx
call fcn.0056ee00
xor ecx, ecx
add eax, esi
adc edx, ecx
js 0x54bb12
jg 0x54ba8f
cmp eax, 0x100
jbe 0x54bb12
test edx, edx
jg 0x54baa7
jl 0x54ba9c
cmp eax, 0x1388
jae 0x54baa7
mov dword [ebp - 0x28], eax
jmp 0x54baae
mov dword [ebp - 0x28], 0x1388
mov edx, dword [ebp - 0x28]
push edx
call fcn.00584a5c
mov esi, eax
add esp, 4
test esi, esi
je 0x54bb12
push 0
push 0
push 0
push ebx
mov dword [ebp - 0x20], 0
call dword [sym.imp.KERNEL32.dll_SetFilePointer]
mov ecx, dword [ebp - 0x28]
lea eax, [ebp - 0x20]
push 0
push eax
push ecx
push esi
push ebx
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
je 0x54bb07
mov eax, dword [ebp - 0x20]
test eax, eax
jbe 0x54bb07
lea edx, [ebp - 0x3d0]
push edx
push 0
push eax
push esi
call dword [0x6647c8]
mov edi, eax
mov dword [ebp - 0x18], edi
push esi
call fcn.00584a85
add esp, 4
jmp 0x54bb31
mov ecx, dword [ebp - 0x20]
lea eax, [ebp - 0x3d0]
push eax
push 0
lea edx, [ebp - 0x130]
push ecx
push edx
call dword [0x6647c8]
mov edi, eax
mov dword [ebp - 0x18], edi
test edi, edi
je 0x54bb3e
cmp edi, 0xffffffff
je 0x54bb3e
mov byte [ebp - 0x11], 0
cmp edi, 3
jne 0x54bb7b
mov ebx, dword [ebp - 0x1c]
mov ecx, dword [ebp - 0x20]
xor esi, esi
mov eax, dword [ebx + 0x120]
mov edx, dword [ebx + 0x124]
cmp eax, ecx
jne 0x54bb69
cmp edx, esi
jne 0x54bb69
test edx, edx
jg 0x54bb72
jl 0x54bb69
test eax, eax
ja 0x54bb72
cmp dword [ebp - 0x28], 0x1388
jb 0x54bb8a
mov dword [ebp - 0x18], 1
jmp 0x54bba6
cmp edi, 1
je 0x54bba3
cmp edi, 2
je 0x54bba3
jmp 0x54bd5d
push 0x663188
lea ecx, [ebx + 0xcc]
mov byte [ebp - 0x12], 1
call fcn.00588849
jmp 0x54bd5d
mov ebx, dword [ebp - 0x1c]
lea edi, [ebp - 0x2a3]
or ecx, 0xffffffff
xor eax, eax
repne scasb al, byte es:[edi]
not ecx
dec ecx
je 0x54bce5
lea eax, [ebp - 0x2a3]
push 0x657a18
push eax
call fcn.00575a20
add esp, 8
test eax, eax
jne 0x54bbe5
lea ecx, [ebx + 0xcc]
push str.text_plain
push ecx
jmp 0x54bc97
lea edx, [ebp - 0x2a3]
push 0x63badc
push edx
call fcn.00575a20
add esp, 8
test eax, eax
je 0x54bc8b
lea eax, [ebp - 0x2a3]
push str.html
push eax
call fcn.00575a20
add esp, 8
test eax, eax
je 0x54bc8b
mov esi, dword [ebx + 0xa4]
cmp byte [esi], 0x2e
jne 0x54bc25
inc esi
mov eax, dword [0x6647cc]
test eax, eax
je 0x54bc6e
lea ecx, [ebp - 0x2a3]
push ecx
push esi
call fcn.00575a20
add esp, 8
test eax, eax
je 0x54bc6e
push 0
lea edx, [ebp - 0x307]
push esi
push edx
call dword [0x6647cc]
cmp eax, 1
jne 0x54bc6e
push esi
lea eax, [ebx + 0xcc]
push str.idmcheckedtype__s
push eax
call fcn.0058148b
add esp, 0xc
jmp 0x54bc9f
lea ecx, [ebp - 0x2a3]
lea edx, [ebx + 0xcc]
push ecx
push str.idmcheckedtype__s
push edx
call fcn.0058148b
add esp, 0xc
jmp 0x54bc9f
lea eax, [ebx + 0xcc]
push str.text_html
push eax
call fcn.0058148b
add esp, 8
cmp dword [ebp - 0x18], 2
jne 0x54bd5d
mov eax, dword [ebx + 0x144]
test ah, 1
je 0x54bd5d
mov edx, dword [ebx + 0x3a0]
mov eax, dword [ebp - 0x270]
lea ecx, [ebp - 0x18]
push 4
push ecx
push 4
push 0
push str.exLenToSkip
push edx
mov dword [ebx + 0x2c8], eax
mov dword [ebp - 0x18], eax
call dword [sym.imp.ADVAPI32.dll_RegSetValueExA]
jmp 0x54bd5d
lea edi, [ebp - 0x307]
or ecx, 0xffffffff
xor eax, eax
repne scasb al, byte es:[edi]
not ecx
dec ecx
je 0x54bd5d
lea eax, [ebp - 0x307]
push str.application_octet_stream
push eax
call fcn.00575a20
add esp, 8
test eax, eax
je 0x54bd5d
lea ecx, [ebp - 0x307]
push str.text_plain
push ecx
call fcn.00575a20
add esp, 8
test eax, eax
je 0x54bd5d
lea edx, [ebp - 0x307]
push str.text_html
push edx
call fcn.00575a20
add esp, 8
test eax, eax
je 0x54bd5d
mov ecx, dword [ebp - 0x1c]
lea eax, [ebp - 0x307]
push eax
add ecx, 0xcc
push 0x638fa8
push ecx
call fcn.0058148b
add esp, 0xc
mov edx, dword [ebp - 0x24]
push edx
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov al, byte [ebp - 0x11]
test al, al
je 0x54bdcb
lea ecx, [ebp - 0x24]
call fcn.0054e990
mov eax, dword [ebp + 8]
lea ecx, [ebp - 0x24]
push eax
mov byte [ebp - 4], 5
call fcn.0054eb00
mov ecx, dword [ebp + 0xc]
mov byte [ebp - 4], 0
mov dword [ecx], eax
lea ecx, [ebp - 0x24]
call fcn.0054e9c0
mov al, byte [ebp - 0x12]
test al, al
jne 0x54bdb2
mov eax, dword [ebp - 0x1c]
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 0x54bdb2
mov esi, dword [ebp - 0x1c]
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 0x54bd9e
push str.text_html
push edx
call fcn.00575a20
mov edx, dword [ebp + 0xc]
add esp, 8
neg eax
sbb eax, eax
inc eax
mov dword [edx], eax
jne 0x54bd9e
mov eax, dword [esi + 0x3c]
test eax, eax
jne 0x54be13
test byte [esi + 0x144], 8
je 0x54bd9e
mov eax, dword [ebp - 0x1c]
or ecx, 0xffffffff
mov ebx, dword [eax + 0xa4]
xor eax, eax
mov edi, ebx
repne scasb al, byte es:[edi]
not ecx
dec ecx
je 0x54bd9e
cmp byte [ebx], 0x2e
jne 0x54be34
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.0056f394
push 0x657a18
push ebx
call fcn.00575a20
add esp, 0xc
test eax, eax
je 0x54bd9e
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.0056c6b0
add esp, 8
test eax, eax
je 0x54bd9e
mov eax, dword [ebp - 0x1c]
push str.text_plain
mov eax, dword [eax + 0xcc]
push eax
call fcn.00575a20
mov ecx, dword [ebp + 0xc]
add esp, 8
neg eax
sbb eax, eax
inc eax
mov dword [ecx], eax
jmp 0x54bd9e