Function at 0x6731d7
Capabilities:
Encrypt data using speck

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x34
push ebx
xor ebx, ebx
test byte [ebp + 0x10], 0x80
push esi
push edi
mov esi, eax
mov dword [ebp - 0x24], ebx
mov dword [ebp - 0x28], ebx
mov byte [ebp - 2], bl
mov dword [ebp - 0x34], 0xc
mov dword [ebp - 0x30], ebx
je 0x673206
mov dword [ebp - 0x2c], ebx
mov byte [ebp - 1], 0x10
jmp 0x673210
mov dword [ebp - 0x2c], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.006788f6
test eax, eax
pop ecx
je 0x67322b
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0040a966
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.00405f0e
test eax, eax
pop ecx
je 0x673246
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0040a966
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x673263
test ecx, 0x74000
jne 0x67325f
cmp dword [ebp - 0x24], eax
je 0x673263
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, closesocket
je 0x6732bd
dec eax
je 0x6732a7
dec eax
je 0x6732a2
call fcn.004063c4
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004063b1
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.0040aa62
add esp, 0x14
jmp 0x67386f
mov dword [ebp - 8], edx
jmp 0x6732c0
test cl, 8
je 0x6732b4
test ecx, 0x70000
jne 0x6732a2
mov dword [ebp - 8], 0x40000000
jmp 0x6732c0
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x673301
sub eax, ecx
je 0x6732f8
sub eax, ecx
je 0x6732ef
sub eax, ecx
je 0x6732e6
sub eax, 0x40
jne 0x67327c
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x673304
mov dword [ebp - 0x10], 3
jmp 0x673304
mov dword [ebp - 0x10], 2
jmp 0x673304
mov dword [ebp - 0x10], 1
jmp 0x673304
mov dword [ebp - 0x10], ebx
mov eax, dword [ebp + 0x10]
mov edx, 0x700
and eax, edx
mov ecx, 0x400
cmp eax, ecx
mov edi, 0x100
jg 0x673357
je 0x67334e
cmp eax, ebx
je 0x67334e
cmp eax, edi
je 0x673345
cmp eax, 0x200
je 0x6733ca
cmp eax, 0x300
jne 0x67327c
mov dword [ebp - 0x14], 2
jmp 0x673374
mov dword [ebp - 0x14], 4
jmp 0x673374
mov dword [ebp - 0x14], 3
jmp 0x673374
cmp eax, 0x500
je 0x67336d
cmp eax, 0x600
je 0x6733ca
cmp eax, edx
jne 0x67327c
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x673398
mov ecx, dword [0x718c08]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x673398
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x6733b4
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x6733b4
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x6733bd
or dword [ebp - 0xc], edi
test al, 0x20
je 0x6733d3
or dword [ebp - 0xc], 0x8000000
jmp 0x6733de
mov dword [ebp - 0x14], 5
jmp 0x673374
test al, 0x10
je 0x6733de
or dword [ebp - 0xc], 0x10000000
call fcn.00677c56
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x673404
call fcn.004063c4
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004063b1
mov dword [eax], 0x18
jmp 0x673492
mov eax, dword [ebp + 8]
mov edi, dword [sym.imp.KERNEL32.dll_CreateFileA]
push ebx
push dword [ebp - 0xc]
mov dword [eax], 1
push dword [ebp - 0x14]
lea eax, [ebp - 0x34]
push eax
push dword [ebp - 0x10]
push dword [ebp - 8]
push dword [ebp + 0xc]
call edi
cmp eax, 0xffffffff
mov dword [ebp - 0x1c], eax
jne 0x67349e
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x67346a
test byte [ebp + 0x10], 1
je 0x67346a
and dword [ebp - 8], 0x7fffffff
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x34]
push dword [ebp - 0x14]
push eax
push dword [ebp - 0x10]
push dword [ebp - 8]
push dword [ebp + 0xc]
call edi
cmp eax, 0xffffffff
mov dword [ebp - 0x1c], eax
jne 0x67349e
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x77e320]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004063d7
pop ecx
call fcn.004063b1
mov eax, dword [eax]
jmp 0x67392b
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x6734ef
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x77e320]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.004063d7
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x673492
call fcn.004063b1
mov dword [eax], 0xd
jmp 0x673492
cmp eax, 2
jne 0x6734fa
or byte [ebp - 1], 0x40
jmp 0x673503
cmp eax, 3
jne 0x673503
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.00677a25
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x77e320]
pop ecx
pop ecx
mov cl, byte [ebp - 1]
or cl, 1
mov byte [edx + eax + 4], cl
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x77e320]
lea eax, [edx + eax + 0x24]
and byte [eax], 0x80
mov byte [ebp - 3], cl
and byte [ebp - 3], 0x48
mov byte [ebp - 1], cl
jne 0x6735d8
test cl, 0x80
je 0x6736a8
test byte [ebp + 0x10], 2
je 0x6735d8
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.006787c8
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x673597
call fcn.004063c4
cmp dword [eax], 0x83
je 0x6735d8
push dword [esi]
call fcn.00678667
jmp 0x673491
push 1
lea eax, [ebp - 4]
push eax
push dword [esi]
mov byte [ebp - 4], bl
call fcn.00677fa9
add esp, 0xc
test eax, eax
jne 0x6735c8
cmp byte [ebp - 4], 0x1a
jne 0x6735c8
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.00677df5
add esp, 0xc
cmp eax, edi
je 0x67358b
push ebx
push ebx
push dword [esi]
call fcn.006787c8
add esp, 0xc
cmp eax, edi
je 0x67358b
test byte [ebp - 1], 0x80
je 0x6736a8
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x673600
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x6735fd
or dword [ebp + 0x10], edi
jmp 0x673600
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x67364d
cmp eax, 0x10000
je 0x673639
cmp eax, 0x14000
je 0x673639
cmp eax, 0x20000
je 0x673647
cmp eax, 0x24000
je 0x673647
cmp eax, 0x40000
je 0x673633
cmp eax, 0x44000
jne 0x673650
mov byte [ebp - 2], 1
jmp 0x673650
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x673650
mov byte [ebp - 2], 2
jmp 0x673650
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x6736a8
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x6736a8
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x673802
cmp eax, 0x80000000
je 0x6737c9
cmp eax, ecx
jne 0x6736a8
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x6736a8
cmp eax, 2
jbe 0x6738aa
cmp eax, 4
jbe 0x67379b
cmp eax, 5
je 0x6738aa
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x77e320]
lea eax, [ecx + eax + 0x24]
mov cl, byte [eax]
xor cl, byte [ebp - 2]
and cl, 0x7f
xor byte [eax], cl
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x77e320]
lea eax, [ecx + eax + 0x24]
mov ecx, dword [ebp + 0x10]
mov dl, byte [eax]
shr ecx, 0x10
shl cl, 7
and dl, 0x7f
or cl, dl
cmp byte [ebp - 3], bl
mov byte [eax], cl
jne 0x67371a
test byte [ebp + 0x10], 8
je 0x67371a
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x77e320]
lea eax, [ecx + eax + 4]
or byte [eax], 0x20
mov edi, dword [ebp - 8]
mov eax, 0xc0000000
mov ecx, edi
and ecx, eax
cmp ecx, eax
jne 0x673929
test byte [ebp + 0x10], 1
je 0x673929
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x34]
push 3
push eax
push dword [ebp - 0x10]
and edi, 0x7fffffff
push edi
push dword [ebp + 0xc]
call dword [sym.imp.KERNEL32.dll_CreateFileA]
cmp eax, 0xffffffff
jne 0x673912
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004063d7
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x77e320]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.00677aa2
pop ecx
jmp 0x673491
push 2
push ebx
push ebx
push dword [esi]
call fcn.006739e6
add esp, 0x10
or eax, edx
je 0x6738aa
push ebx
push ebx
push ebx
push dword [esi]
call fcn.006739e6
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x67358b
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.00677fa9
add esp, 0xc
cmp eax, 0xffffffff
je 0x67358b
cmp eax, 2
je 0x67384e
cmp eax, 3
jne 0x67389c
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x67384e
mov byte [ebp - 2], 1
jmp 0x6736a8
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x6736a8
cmp eax, 2
jbe 0x6738aa
cmp eax, 4
ja 0x67369f
push 2
push ebx
push ebx
push dword [esi]
call fcn.006739e6
add esp, 0x10
or eax, edx
je 0x6738aa
push ebx
push ebx
push ebx
push dword [esi]
call fcn.006739e6
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x6736a8
jmp 0x67358b
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x673876
push dword [esi]
call fcn.00678667
pop ecx
call fcn.004063b1
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x67392b
cmp eax, 0xfeff
jne 0x67389c
push ebx
push 2
push dword [esi]
call fcn.006787c8
add esp, 0xc
cmp eax, 0xffffffff
je 0x67358b
mov byte [ebp - 2], 2
jmp 0x6736a8
push ebx
push ebx
push dword [esi]
call fcn.006787c8
add esp, 0xc
jmp 0x673840
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x6738ca
dec eax
jne 0x6736a8
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x6738d8
mov dword [ebp - 0x18], 0xbfbbef
mov dword [ebp - 0x14], 3
mov eax, dword [ebp - 0x14]
sub eax, edi
push eax
lea eax, [ebp + edi - 0x18]
push eax
push dword [esi]
call fcn.00676554
add esp, 0xc
cmp eax, 0xffffffff
je 0x6738fe
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x6738d8
jmp 0x6736a8
push dword [esi]
call fcn.00678667
pop ecx
call fcn.004063b1
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x67392b
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x77e320]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret