Which of the following can be used for post-exploitation activities?

WinDbg is a kernel and user-mode debugger used for software development and crash dump analysis, not for post-exploitation activities.

IDA is an interactive disassembler used for reverse engineering and malware analysis, not for conducting actions on a compromised host.

Maltego is an OSINT and reconnaissance tool used to map entity relationships during pre-exploitation phases, not post-exploitation.

PowerShell is a native Windows scripting environment extensively used in post-exploitation for privilege escalation, lateral movement, persistence, and data exfiltration. Frameworks like PowerSploit and Empire are PowerShell-based and purpose-built for post-compromise operations. Its deep integration with Windows APIs and .NET makes it ideal for operating stealthily within a compromised environment.