vishnuraju / Enum-LSASS

LSASS enumeration like pypykatz written in C-Lang

Enum-LSASS

The idea behind this emulation is to simply do not invoke OpenProcess to get handle with appropriate rights but, use the already opened handle to LSASS from other processes. Similar to pypykatz, this binary written in C-lang gets a copy of already open LSASS handle from a foreign process and copies this handle into our own process using NtDuplicateObject to access LSASS. This also sets PROCESS_VM_READ for DesiredAccess.

This method can succeed because of two possible reasons:

• A random process has an open handle to LSASS, and access this process via debug privileges.
• LSASS itself has an open handle to LSASS by default. But, how is this different then the normal method? OpenProcess in mimikatz calls with that one specific flag value PROCESS_ALL_ACCESS to read process memory. This method doesn't use that specific flag value therefore bypasses this filtering.

Reason behind porting this feature from pypykatz to C-Lang:

• Replace the LSASS enumeration in mimikatz. Check the Example folder in this repo.
• Using this feature on targets that doesn't have python installed.
• Applying antivirus evasion technqiues mentioned in SCRT Team blog

Kudos :)

@SkelSec for pypykatz
@scrtsa for avcleaner