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Numbreaker

Cobalt Strike 4.x Aggressor Script to assist the Red Team Operator with number, datetime, and data conversions/decoding.

Install / Use

/learn @SavSanta/Numbreaker

README

numbreaker

Overview

A Cobalt Strike Aggressor Script to assist an operators in conversions of common numerical, alphanumerical, or similar data types into human readable data. Supports converting from:

  • SAMAccount type values that are typically found listed for accounts in Active Directory.
  • User Account Control values that are associated to an accounts in Active Directory.
  • Common Microsoft timestamps. ie Active Directory (e.g. accountExpires, LastLogon, LastLogonTimestamp, and LastPwdSet) or Windows Filetime/Systemtime values.
  • CIDR IP Range start and end calculation
  • JSON Web Token (JWT) decode/display.

Usage

  1. Install the Aggressor Script into your Cobalt Strike Client.
  2. In a beacon window type numbreaker
  3. Enter in a value in the new pop-up window
  4. Select the type of conversion that is desired by clicking on the appropriate radial dial buttons.

Alternatively, once can install as a right-click pop-up in your Cobalt Strike default.cna. Reference the manual for more info.

Screenshots

NTDATE EX

SAM Account Type

NTDATE EX

MSAD/LDAP/NT Datetime

UAC EX

User Account Control

UAC EX

CIDR Range Calc

UAC EX

JWT Decoder

View on GitHub
GitHub Stars9
CategoryDevelopment
Updated2mo ago
Forks1

Security Score

75/100

Audited on Jan 10, 2026

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