Bug Hunter Diary

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COMRaider, 72coordinated disclosure, 18Core Audio (Apple iOS audioframework), 134cross-site scripting (XSS), 75CTL_CODE, 97CurrentStackLocation, 95CVE-IDs. See Common Vulnerabilitiesand ExposuresIdentifiersCygwin environment, 21DData Execution Prevention(DEP), 19–21, 179–182data transfer type, 97debuggers, 6The GNU Debugger (gdb),7, 121, 140, 171–176Immunity Debugger, 7, 16The Modular Debugger(mdb), 7, 37, 163–165OllyDbg, 7WinDbg, 7, 76–77, 92–95, 99,107, 165–170demuxer, 10, 52DEP (Data Execution Prevention),19–21, 179–182DeviceIoControl(), 90Direct Kernel Object Manipulation(DKOM), 110disassemblers, 7DispCallFunc(), 76DKOM (Direct Kernel ObjectManipulation), 110double frees, 6DRIVER_OBJECT, 90DriverView, 88dynamic analysis, 4EELF (Executable and LinkableFormat), 61, 157Enhanced Mitigation ExperienceToolkit (EMET), 22Executable and Linkable Format(ELF), 61, 157exploit, 3for avast! antivirus productvulnerability, 110development of, 8for FFmpeg vulnerability, 65for Mac OS X kernel vulnerability,129for Sun Solaris kernel vulnerability,48for VLC media player vulnerability,18for WebEx vulnerability, 83FFFmpeg multimedia library,51, 155FreeBSD, 130full disclosure, 18, 84fuzzing, 4, 134Ggdb (The GNU Debugger), 7,121, 140, 171–176Global Offset Table (GOT), 61,67, 157, 183GNU Debugger, The (gdb), 7,121, 140, 171–176GOT overwrite, 67, 157–161/GS, 19, 152, 179–182Hheap buffer overflows, 149. Seealso buffer overflowsheap-memory management, 6heap mitigation techniques, 179heap spraying techniques, 83, 129IIDA Pro (Interactive DisassemblerProfessional), 7, 78,88, 181Immunity Debugger, 7, 16192 Index
input/output controls (IOCTL),26, 88, 113ioctl(), 115instruction alignment, 146instruction pointer, 7, 150Intel, 7, 149Interactive Disassembler Professional(IDA Pro), 7, 78,88, 181Internet Explorer, 71IoCreateDevice(), 88IOCTL (input/output controls),26, 88, 113ioctl(), 115I/O request packet (IRP), 95_IO_STACK_LOCATION, 96iPhone, 133IRP (I/O request packet), 95IRP_MJ_DEVICE_CONTROL, 90Jjmp reg technique, 18, 19Kkernel debugging, 7, 37, 88, 121,167, 173Kernel Debug Kit, 174kernel driver, 87kernel panic, 32, 37–38, 120, 165kernel space, 39, 102KeSetEvent(), 107LLinuxDebian, 157, 183debugging the Mac OS Xkernel with, 121, 173and exploit mitigation techniques,180, 183fuzzing the iPhone with, 134gdb, debugger for, 7Red Hat, 173stack buffer overflowsunder, 151Ubuntu, 56, 63, 151little-endian, 17, 143LookingGlass, 21MMac OS X, 7, 113, 173mdb (The Modular Debugger),7, 37, 163–165mediaserverd, 134memcpy(), 101, 142memory corruption, 6, 140,149, 157memory errors, 6memory leak, 129, 140METHOD_BUFFERED, 99MindshaRE, 76mmap(), 44MobileSafari, 133Modular Debugger, The (mdb),7, 37, 163–165Most Significant Bit (MSB), 156movie header atom, 144movsx, 5MSB (Most Significant Bit), 156Nnon-maskable interrupt(NMI), 122NULL pointer dereference, 6,32, 51, 153–154Oobjdump, 63, 161, 184OS X, 7, 113, 173Pparser, 9PLT (Procedure Linkage Table),158–160privilege escalation, 110, 129Procedure Linkage Table (PLT),158–160program counter, 7, 150Python, 74QQuickTime (File Format Specification),144Index 193
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A Bug Hunter’s Diary. Copyright
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Chapter 3: Escape from the WWW Zone
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B.2 The Windows Debugger (WinDbg) .
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IntroductionWelcome to A Bug Hunter
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1Bug HuntingBug hunting is the proc
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After I’ve found a bug, I want to
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Table 1-1: Debuggers Used in This B
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2Back to the ’90sSunday, October
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16361637 /* clear the SEQ table */1
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If a TiVo file is loaded by VLC, th
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Get the →vulnerableWindows versio
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EIP = 41414141 . . . Mission EIP co
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NoteTo configure Process Explorer t
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See the following excerpt from the
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3. Immunity Debugger is a great Win
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NoteInput/output controls (IOCTLs)
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msgbb_datapdatabb_rptrdb_basedatabu
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8180 /*8181 * Null terminate the st
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26736 /*26737 * SIOC[GS]TUNPARAM ap
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19165 * are also rejected as they i
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01 #include 02 #include 03 #include
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fffffe8000f7e4b0 unix:die+da ()ffff
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zero pagenot mappedzero pageis mapp
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gaining full control over EIP/RIP a
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112 return 1;113 }114115 printf ("O
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solaris$ isainfo -b64I then compile
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ip_output+0x10()ip_wput+0x37()putne
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Notes1. The source code of OpenSola
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4.1 Vulnerability DiscoveryTo find
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167 if (current_track + 1 > fourxm-
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Step 1: Find a Sample 4X Movie File
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Next, I modified the values of trac
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Table 4-2: List of the Assembler In
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63 #elif defined (HAVE_MEMALIGN)64
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linux$ gdb -q ./ffmpeg_g(gdb) run -
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(UINT_MAX / sizeof(AudioTrack) - 1)
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7ebe000-b7ec0000 r--p 0015c000 08:0
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5Browse and You’re OwnedSunday, A
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{SWI.ClassId_q.ClassId clsid = new
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27 except KeyboardInterrupt:28 prin
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Figure 5-4: Defining a breakpoint a
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Figure 5-7: User-controlled argumen
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Next, I tried to retrieve the size
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05 06 arg = String(232, "A") + Stri
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iDefense VCPnotifiedVulnerability d
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6.1 Vulnerability DiscoveryI used t
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Step 3: Check the Device Security S
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Below, the elements of the MajorFun
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At address .text:00010748, a pointe
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[..][..]//// Current stack location
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The transfer type is specified usin
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If the requested IOCTL code matches
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Figure 6-5: Graph view of the vulne
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.text:00010DBA push 1 ; _DWORD.text
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99 // .text:00010DEF cmp dword ptr
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nt!RtlpBreakWithStatusInstruction:8
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After I gained control over EIP, I
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7A Bug Older Than 4.4BSDSaturday, M
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Here are some examples:Source code
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1094 return (ENXIO);1095 if (t != t
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4. The assumed address of l_open()
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osx$ cat /Library/Logs/panic.logSat
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Back on the Linux host, I started t
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0x35574c, the value is used to calc
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48 define search_memloc49 set $max_
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As the debugger output shows, the E
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ApplenotifiedApple asks formore det
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I performed the following steps whe
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I then began fuzzing files of the A
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Figure 8-1: Playing the unmodifiedA
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• Line 40 copies the current proc
Page 156 and 157: As the debugger output shows, media
Page 158 and 159: The manipulated byte (0xff) that ca
Page 160 and 161: (gdb) x/12x 0x1301bfc0x1301bfc: 0x0
Page 162 and 163: ApplenotifiedApple confirmsthe vuln
Page 164 and 165: Every function of a process that is
Page 166 and 167: eip 0x43434343 0x43434343eflags 0x1
Page 168 and 169: The access violation is caused when
Page 170 and 171: is less than 12. If it is, the stri
Page 172 and 173: The program in Listing A-4 calls th
Page 174 and 175: 0x080483f3 : mov DWORD PTR [esp+0x4
Page 177 and 178: BDebuggingThis appendix contains in
Page 179 and 180: Information CommandsCommandDescript
Page 181 and 182: Information CommandsCommandrkbu add
Page 183 and 184: Figure B-3: Configuration settings
Page 185 and 186: Figure B-6: Attaching the kernel de
Page 187 and 188: Other CommandsCommandset disassembl
Page 189 and 190: linux# pwd/home/tk/gdb-292/srclinux
Page 191: Notes1. See the Solaris Modular Deb
Page 194 and 195: The many mitigation techniques coul
Page 196 and 197: Figure C-1: DEP and ASLR status sho
Page 198 and 199: 08 p[0] = 0x41414141;09 printf (“
Page 200 and 201: ConclusionIn case of a buffer overf
Page 202 and 203: zonecfg:wwwzone> set autoboot=truez
Page 204 and 205: Notes1. See Rob King, “New Leopar
Page 208 and 209: Rreadelf, 161RELRO, 67-69, 183-186r
Page 210: A Bug Hunter’s Diary is set in Ne
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