vanhauser-thc/thc-hydra

all passwords are valid in RDP module when system is win2003

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#429 opened on Jul 15, 2019

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help wanted

Description

version is v9.1-dev 2019.7.15 all passwords are valid in RDP module when system is win2003 when system is win7 or win2008 function is ok

Contributor guide

Tech stack
c
Domain
security
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
C programmingRDP protocol basicsWindows authentication
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20
Research direction
The bug is in the RDP module, likely in a file like rdp.c or similar. The issue reports that all passwords succeed on Windows 2003, but works correctly on Windows 7/2008. Investigate the RDP authentication handshake differences between Windows versions, focusing on the NTLM or CredSSP layer. Check the Hydra RDP module code for any hardcoded assumptions or missing version specific handling. Review comments in the issue for any clues.