ATTACKING WINDOWS BY WINDOWS

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Info

Basic object: Menu • Two APIs: HMENU CreateMenu (); BOOL AppendMenu(HMENU hMenu,UINT uFlags,UINT_PRT uIDNewItem,LPCWSTR lpNewItem); Menu1 (tagMENU) +0x008 cLockObj +0x034 cItems = 4 +0x050 rgItems +0x068 dwMenuData 4 tagITEMs …………………… +0x010 spSubMenu …………………… …………………… +0x010 spSubMenu …………………… …………………… +0x010 spSubMenu …………………… …………………… +0x010 spSubMenu …………………… Menu2 (tagMENU) +0x008 cLockObj = 4 +0x034 cItems = 0 +0x050 rgItems = NULL +0x068 dwMenuData
Make a Use-After-Free • API: BOOL WINAPI DestroyMenu (); Menu2(tagMENU) +0x008 cLockObj = 4 +0x034 cItems +0x050 rgItems +0x068 dwMenuData Menu2(tagMENU) +0x008 cLockObj = 0 +0x034 cItems +0x050 rgItems +0x068 dwMenuData Freed Mem and dword ptr [r15], 0FFFFFFFBh DestroyMenu(Menu2)
Page 1 and 2: ATTACKING WINDOWS BY WINDOWS Yin Li
Page 3 and 4: About us Team member: • xin, godz
Page 5 and 6: • 46 acknowledgments!
Page 7 and 8: Old days.. Q1: Where to write? •
Page 9 and 10: Where to write?
Page 11 and 12: What to write?
Page 13 and 14: Window Extra Data • Two APIs: LON
Page 15 and 16: If we change a bit… • Bin: 1000
Page 17 and 18: Read from anywhere • Two APIs: LO
Page 19 and 20: Steal SYSTEM Token My Window (tagWN
Page 21 and 22: Pwn2Own 2016 Flash
Page 23 and 24: How to exploit 0 → 1 Q1: Where to
Page 25 and 26: The Function - CVE-2016-3355 DWORD
Page 27 and 28: My Exploit 1Create memory font 2Cre
Page 29: The Refcount! • Win32k object: 1:
Page 33 and 34: Fake tagMENU Window Text (Fake tagM
Page 35 and 36: Let`s rule them all!
Page 37 and 38: Summary All Windows OS Trigger one

ATTACKING WINDOWS BY WINDOWS

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