By Bill Blunden
Whereas forensic research has confirmed to be a invaluable investigative software within the box of laptop protection, using anti-forensic expertise makes it attainable to take care of a covert operational foothold for prolonged sessions, even in a high-security surroundings. Adopting an process that favors complete disclosure, the up-to-date moment variation of The Rootkit Arsenal offers the main obtainable, well timed, and whole insurance of forensic countermeasures. This publication covers extra issues, in larger intensity, than the other at the moment on hand. In doing so the writer forges throughout the murky again alleys of the web, laying off mild on fabric that has often been poorly documented, in part documented, or deliberately undocumented. the diversity of issues offered contains easy methods to: -Evade autopsy research -Frustrate makes an attempt to opposite engineer your command & regulate modules -Defeat stay incident reaction -Undermine the method of reminiscence research -Modify subsystem internals to feed incorrect information to the skin -Entrench your code in fortified areas of execution -Design and enforce covert channels -Unearth new avenues of assault
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Extra resources for The Rootkit Arsenal: Escape and Evasion in the Dark Corners of the System
327 . 330 . 336 . 337 . . . . 339 Binary Patching as opposed to Run-time Patching . 340 the line forward . . . 340 6. 1 Run-time Patching. . 340 Detour Patching . . · 341 Detour Jumps . . . . 344 instance 1: Tracing Calls . 346 Detour Implementation. · 351 gather the handle of the NtSetValueKeyO . . 354 Initialize the Patch Metadata constitution . . . . . 354 make sure the unique desktop Code opposed to a identified Signature . 356 shop the unique Prolog and Epilog Code. . 357 replace the Patch Metadata constitution. . . . 357 Lock entry and Disable Write safety . 358 Inject the Detours . . 358 The Prolog Detour . . 359 The Epilog Detour . · 361 Post-Game Wrap-Up . 365 instance 2: Subverting workforce coverage. . . · . . . 365 Detour Implementation. . . . . . . . . . 367 Initializing the Patch Metadata constitution . · . . . 367 The Epilog Detour . . . . . . . . . . . . . · . . . 368 Mapping Registry Values to staff rules. . 373 instance three: Granting entry Rights . . . . 374 Detour Implementation. . . . . . . . . . . 376 6. 2 Binary Patching . . . . . . . . . . . . . . . . 379 Subverting the grasp Boot checklist . . . . . 380 The MBR intensive . . 380 The Partition desk . . . . . . . . . . . . . . 383 Patching process workouts. . . . . . . . . Contents Patch or substitute? ... . .. . Hidden Sectors . . . . . . . . . undesirable Sectors and Boot Sectors . Rogue Partition . MBR Loader ... IA-32 Emulation. . Vbootkit ... .. . 6. three guide Patching Countermeasures . bankruptcy 7 . 386 . 387 . 388 . 389 . 390 . 393 . 395 . 399 changing Kernel items. . . . . . . . . . . . . . . . . . . . 401 7. 1 the price of Invisibility . . . . . . . . 401 factor 1: The Steep studying Curve . . . . . 401 factor 2: Concurrency . . . . . . . . . . . . . 402 . 403 factor three: Portability and Pointer mathematics Branding the approach: DKOM . . . . . . . 405 items? . . . . . . . . . .. ... .. . ... .. ... . . ... 405 7. 2 Revisiting the EPROCESS item . . 406 buying an EPROCESS Pointer . 406 suitable Fields in EPROCESS . . 409 UniqueProcessId . . . 409 ActiveProcessLinks . . 410 Token . . . . . . . . . 411 ImageFileName . . . . 411 7. three The DRIVER_SECTION item. . 411 7. four The TOKEN item . . . . . . . 414 Authorization on home windows . . . . . 414 finding the TOKEN item. . . . 416 correct Fields within the TOKEN item . . 418 7. five Hiding a approach. . . . . . . . . . 422 7. 6 Hiding a driving force . . . . . . . . . . 428 7. 7 Manipulating the entry Token. . 432 7. eight utilizing No-FU . . . . . . . 434 7. nine Countermeasures . . . . . . . . . 436 Cross-View Detection . . . . . . . 436 High-Level Enumeration: CreateToolhelp32SnapshotO . . 437 High-Level Enumeration: PID Bruteforce . 439 Low-Level Enumeration: techniques. . 442 Low-Level Enumeration: Threads. . 444 similar software program. . . . . . . . 451 box Checksums. . . . . . . . . . . . . 452 Counter-Countermeasures . . . . . . . 452 7. 10 observation: Limits of the Two-Ring version . 453 7. eleven The final traces of safety . . . . . . . . . . . 454 xi (ontents bankruptcy eight Deploying filter out Drivers. . . . . . . . . . . . . . . . . . . . 457 eight. 1 clear out driving force thought. . . . . . . . motive force Stacks and equipment Stacks. . . . . . The Lifecycle of an IRP . . . . . . . . . . . Going Deeper: The Composition of an IRP IRP Forwarding . . . . . . . . . . IRP final touch . . . . . . . . . . . . . . . eight. 2 An instance: Logging Keystrokes . . . . . The PS/2 Keyboard motive force and equipment Stacks . Lifecycle of an IRP . . . . . . . . . . . . . . . Implementation . . . . . . . . . . .