July 12th, 2023
After gaining access to a target system through exploitation, the next step is to maintain that access and exfiltrate any valuable data. In this post, we'll cover some basic post-exploitation techniques that you can use to maintain access to a target system and exfiltrate data.
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Backdoors
Backdoors are programs or scripts that allow attackers to maintain access to a target system even after being detected and removed. This can be done by creating a user account with elevated privileges, installing a rootkit, or using a persistent backdoor. -
Privilege Escalation
Privilege escalation involves gaining elevated privileges on a target system, allowing attackers to access sensitive information and execute commands with higher privileges. This can be done by exploiting vulnerabilities in software or by manipulating user accounts and permissions. -
Data Exfiltration
Data exfiltration involves stealing sensitive information from a target system and transferring it to an external location. This can be done using tools like FTP, SSH, or by creating a covert channel using DNS or ICMP. -
Covering Tracks
Covering tracks involves removing any evidence of the attack from the target system to avoid detection. This can be done by deleting log files, modifying timestamps, or even wiping the entire system. -
Persistence>
Persistence involves ensuring that any modifications made to the target system, such as installing a backdoor, remain even after a system reboot. This can be done by modifying startup scripts or using a rootkit to hide the backdoor from detection.
It's important to note that post-exploitation activities can be highly illegal and unethical. Always obtain permission from the target organization before attempting any type of post-exploitation activity.
In the next post, we'll cover some basic evasion techniques that you can use to avoid detection and protect yourself while conducting penetration testing.