OcttKB Cross-Repo Sync (HTML to Raw)

Wiki-OcttKB/tiddlers/Normal/Linux.tid

@@ -1,6 +1,6 @@
 created: 20230111153758951
 creator: Octt
-modified: 20230531082831421
+modified: 20230603231347845
 modifier: Octt
 tags: $:/i18n:en UNIX
 title: Linux
@@ -21,10 +21,13 @@ title: Linux
 * LDP (obsolete?)
 ** [[The Network Administrators' Guide|https://tldp.org/LDP/nag/]]
 
+* [[SquashFS|https://tldp.org/HOWTO/SquashFS-HOWTO/whatis.html]], [[DwarFS|https://github.com/mhx/dwarfs]]
+
 !! ''Tools''
 
 * [[Flatpak|https://flatpak.org/]] --- //Linux application sandboxing and distribution framework// --- <<[ "[[Git|https://github.com/flatpak]]">>
 ** [[Flathub|https://flathub.org/]] --- Official build and distribution service for Flatpak applications --- <<[ "[[Git|https://github.com/flathub]]">>
 
 * [[Wine|https://www.winehq.org/]] --- //Compatibility layer for running Windows applications on POSIX-compliant systems//
 ** [[WineZGUI|https://github.com/fastrizwaan/WineZGUI]] --- //Wine GUI using Zenity - Play and Share!// --- <<#[ Flatpak "https://github.com/fastrizwaan/flatpak-wine">>
+

Wiki-OcttKB/tiddlers/Normal/SEB 3.5.0 on Linux (VM Bypass).tid

@@ -0,0 +1,38 @@
+created: 20230603231547125
+creator: Octt
+modified: 20230603234352061
+modifier: Octt
+tags: 
+title: SEB 3.5.0 on Linux (VM Bypass)
+
+Having the need of running Safe Exam Browser while I've only got GNU+Linux on my laptop and desktop, I had to look for alternative solutions.
+
+* There is no linux-native full SEB application, it's only for Windows and macOS.
+* Running SEB on WinPE is unfeasible as it needs to install many runtime dependencies, it's too slow to do that while booted into the live system, and on my 4 GB laptop the ramdisk is not big enough.
+* SEB by default detects and blocks virtual machines.
+** This option can be changed in the local configuration file, but when starting an exam the configuration loaded from the server takes precedence over the local one.
+** SEB 3.5.0 added an hard-to-break anti-tampering mechanism, where the LMS server verifies if the client is altered and won't let you take exams; patching the few needed modules won't work.
+
+Turns out only way to work around the issue is to make a relatively stealth VM.
+
+By analyzing the SEB for Windows source code, we can see some important files and methods:
+
+* [[VirtualMachineDetector.cs:IsVirtualMachine()|https://github.com/SafeExamBrowser/seb-win-refactoring/blob/11b10e8e4524c1fe65b6c3db7d12e172facf322c/SafeExamBrowser.SystemComponents/VirtualMachineDetector.cs#L49]]: Clearly the main place where VM detection is happening
+
+Also, by referring to various strings in the source code and [[issue #268|https://github.com/SafeExamBrowser/seb-win-refactoring/issues/268#issuecomment-994586854]], we can see that in VMs a bug occurs where 0 displays are detected. This must be accounted for after succeeding in concealing the VM from the program. A good start is in this class and method, which checks for displays and throws errors if necessary:
+
+* [[DisplayMonitorOperation.cs:CheckDisplayConfiguration()|https://github.com/SafeExamBrowser/seb-win-refactoring/blob/11b10e8e4524c1fe65b6c3db7d12e172facf322c/SafeExamBrowser.Runtime/Operations/DisplayMonitorOperation.cs#L51]]
+
+[TODO]
+
+!! VM Setup
+
+We choose VMWare Workstation 17 (latest version) as it lets a few important options be customized. First I created a VM with close-to-suggested settings (the primary ones don't matter here).
+
+Then I modified the network card settings [TODO]
+
+After this, I installed Windows 10 (a build from 2019 I have on a burned DVD always at hand). No VMWare tools have been installed.
+
+!! Hardening Windows
+
+[TODO] (https://pastebin.com/XEn7BykP)

Wiki-OcttKB/tiddlers/Normal/Saved_Sites.tid

@@ -1,6 +1,6 @@
 created: 20230223222804008
 creator: Octt
-modified: 20230508214437798
+modified: 20230603231144329
 modifier: Octt
 tags: 
 title: Saved/Sites
@@ -34,4 +34,5 @@ Some personal ones could be defined as "[[digital gardens|Digital Garden]]".
 * [[XXIIVV|https://wiki.xxiivv.com/]] --- <<[ "[[Git|https://github.com/XXIIVV/oscean]]">>
 
 !!! Mess-leaning <small>(often the most creative)</small>
-*
+* [[samy.pl|https://samy.pl/]] - Website full of easter eggs by the same <<YoutubeL OJ1pEAdFLP8 "person who once hacked MySpace">>.
+** One easter egg is the client source code is hidden as a binary-encoded string represented by spaces and tabs; The server providing the data uses something (headers? but also other stuff) to only serve the real HTML to a browser; curl/wget without all the browser headers (and a browser after a reload in `view-source:` ?) get a fake HTML. <<#[ "Older but more in-depth analysis" "https://t.me/ioctt/19280">>

Wiki-OcttKB/tiddlers/System/$__HistoryList.json.meta

@@ -1,5 +1,5 @@
-created: 20230531090933916
+created: 20230603234517343
 current-tiddler: GettingStarted
-modified: 20230531090933916
+modified: 20230603234517343
 title: $:/HistoryList
 type: application/json

Wiki-OcttKB/tiddlers/System/$__OcttKB_Empty.tid

@@ -1,3 +1,3 @@
 created: 19700101000000000
-modified: 20230531083553000
+modified: 20230531091416000
 title: $:/OcttKB/Empty

Wiki-OcttKB/tiddlers/System/$__StoryList.tid

@@ -1,6 +1,6 @@
-created: 20230531084618560
+created: 20230603230410011
 creator: Octt
 list: 
-modified: 20230531090701650
+modified: 20230603234429443
 modifier: Octt
 title: $:/StoryList

Wiki-OcttKB/tiddlers/System/$__state_sidebar.tid

@@ -1,6 +1,6 @@
 created: 20220920174307633
 creator: Octt
-modified: 20230501102541769
+modified: 20230603231205114
 modifier: Octt
 title: $:/state/sidebar
 

Wiki-OcttKB/tiddlers/System/$__state_tab_sidebar--595412856.tid

@@ -1,7 +1,7 @@
 created: 20220920092307479
 creator: Octt
-modified: 20230531085755129
+modified: 20230603234428531
 modifier: Octt
 title: $:/state/tab/sidebar--595412856
 
-OcttKB/Index
+$:/core/ui/SideBar/Recent