OtterCTF 13道内存取证题目详细解析（中）

ChaMd5安全团队

发布于 2018-12-28 11:23:31

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发布于 2018-12-28 11:23:31

文章被收录于专栏：ChaMd5安全团队

5 - Name Game 2 150

question

From a little research we found that the username of the logged on character is always after this signature: 0x64 0x??{6-8} 0x40 0x06 0x??{18} 0x5a 0x0c 0x00{2} What's rick's character's name? format: CTF{…}

solve

先看下进程

➜  Desktop volatility -f OtterCTF.vmem --profile=Win7SP1x64 psscan  
Volatility Foundation Volatility Framework 2.6
Offset(P)          Name                PID   PPID PDB                Time created                   Time exited                   
------------------ ---------------- ------ ------ ------------------ ------------------------------ ------------------------------
0x000000007d403610 mscorsvw.exe        412    492 0x0000000040d28000 2018-08-04 19:28:42 UTC+0000                                 
0x000000007d686b30 Rick And Morty     3820   2728 0x000000000b59a000 2018-08-04 19:32:55 UTC+0000                                 
0x000000007d6a7b30 bittorrentie.e     2308   2836 0x0000000076ada000 2018-08-04 19:27:19 UTC+0000                                 
0x000000007d6c9b30 bittorrentie.e     2624   2836 0x00000000761f5000 2018-08-04 19:27:21 UTC+0000                                 
0x000000007d7cb740 LunarMS.exe         708   2728 0x00000000731cb000 2018-08-04 19:27:39 UTC+0000                                 
0x000000007d832060 sppsvc.exe         2500    492 0x000000000ae7b000 2018-08-04 19:26:58 UTC+0000                                 
0x000000007d87e060 explorer.exe       2728   2696 0x000000000873f000 2018-08-04 19:27:04 UTC+0000                                 
0x000000007d890b30 BitTorrent.exe     2836   2728 0x0000000006c2e000 2018-08-04 19:27:07 UTC+0000                                 
0x000000007d8f02e0 WebCompanion.e     2844   2728 0x0000000006619000 2018-08-04 19:27:07 UTC+0000   2018-08-04 19:33:33 UTC+0000  
0x000000007d9aab30 SearchIndexer.     3064    492 0x0000000079a02000 2018-08-04 19:27:14 UTC+0000                                 
0x000000007da8f060 sc.exe             3208   3880 0x000000006fe9a000 2018-08-04 19:33:47 UTC+0000   2018-08-04 19:33:48 UTC+0000  
0x000000007db12060 WmiPrvSE.exe       2136    604 0x0000000073b40000 2018-08-04 19:26:51 UTC+0000                                 
0x000000007db8f060 WebCompanionIn     3880   1484 0x0000000043242000 2018-08-04 19:33:07 UTC+0000                                 
0x000000007dbcdb30 vmtoolsd.exe       2804   2728 0x00000000074c6000 2018-08-04 19:27:06 UTC+0000                                 
0x000000007dbe9b30 taskhost.exe       2344    492 0x000000000b824000 2018-08-04 19:26:57 UTC+0000                                 
0x000000007dbfab30 dwm.exe            2704    844 0x0000000008a6d000 2018-08-04 19:27:04 UTC+0000                                 
0x000000007dbfd960 notepad.exe        3304   3132 0x000000007207d000 2018-08-04 19:34:10 UTC+0000                                 
0x000000007dc0f630 VGAuthService.     1356    492 0x0000000018f8b000 2018-08-04 19:26:25 UTC+0000                                 
0x000000007dc7f630 dllhost.exe        1324    492 0x000000001030d000 2018-08-04 19:26:42 UTC+0000                                 
0x000000007dc92920 vmtoolsd.exe       1428    492 0x0000000017f54000 2018-08-04 19:26:27 UTC+0000                                 
0x000000007dcb6890 sc.exe              452   3880 0x000000005f76a000 2018-08-04 19:33:48 UTC+0000   2018-08-04 19:33:48 UTC+0000  
0x000000007dce7b30 SearchFilterHo     2740   3064 0x000000002fa16000 2018-08-04 19:33:11 UTC+0000   2018-08-04 19:34:22 UTC+0000  
0x000000007dde7800 svchost.exe        1948    492 0x0000000076d80000 2018-08-04 19:26:42 UTC+0000                                 
0x000000007ddf3b30 msdtc.exe          1436    492 0x000000000fcd5000 2018-08-04 19:26:43 UTC+0000                                 
0x000000007de01060 sc.exe             2028   3880 0x0000000077e22000 2018-08-04 19:33:49 UTC+0000   2018-08-04 19:34:03 UTC+0000  
0x000000007de2e9e0 svchost.exe         808    492 0x000000001fe6a000 2018-08-04 19:26:18 UTC+0000                                 
0x000000007de31b30 svchost.exe         844    492 0x000000001ff36000 2018-08-04 19:26:18 UTC+0000                                 
0x000000007de4db30 svchost.exe         868    492 0x000000002027f000 2018-08-04 19:26:18 UTC+0000                                 
0x000000007de753a0 audiodg.exe         960    808 0x000000001f6df000 2018-08-04 19:26:19 UTC+0000                                 
0x000000007de97060 svchost.exe        1012    492 0x000000001f58e000 2018-08-04 19:26:20 UTC+0000                                 
0x000000007ded37e0 svchost.exe         620    492 0x000000001e7a0000 2018-08-04 19:26:21 UTC+0000                                 
0x000000007df5ab30 spoolsv.exe        1120    492 0x000000001b0e7000 2018-08-04 19:26:22 UTC+0000                                 
0x000000007df718a0 svchost.exe        1164    492 0x000000001ac36000 2018-08-04 19:26:23 UTC+0000                                 
0x000000007e000a90 chrome.exe         3924   4076 0x00000000006ba000 2018-08-04 19:29:51 UTC+0000                                 
0x000000007e072b30 sc.exe             3504   3880 0x0000000040331000 2018-08-04 19:33:48 UTC+0000   2018-08-04 19:33:48 UTC+0000  
0x000000007e0d1060 Lavasoft.WCAss     3496    492 0x0000000078089000 2018-08-04 19:33:49 UTC+0000                                 
0x000000007e0f4060 winlogon.exe        432    380 0x00000000237dc000 2018-08-04 19:26:11 UTC+0000                                 
0x000000007e1377c0 services.exe        492    396 0x000000002257a000 2018-08-04 19:26:12 UTC+0000                                 
0x000000007e13f060 lsass.exe           500    396 0x000000002219a000 2018-08-04 19:26:12 UTC+0000                                 
0x000000007e1461a0 lsm.exe             508    396 0x00000000221a2000 2018-08-04 19:26:12 UTC+0000                                 
0x000000007e1bdb30 vmacthlp.exe        668    492 0x000000002120e000 2018-08-04 19:26:16 UTC+0000                                 
0x000000007e1ebb30 svchost.exe         712    492 0x0000000020d1c000 2018-08-04 19:26:17 UTC+0000                                 
0x000000007e4268b0 WebCompanion.e     3856   3880 0x000000003c956000 2018-08-04 19:34:05 UTC+0000                                 
0x000000007e435240 chrome.exe         3648   4076 0x0000000067df6000 2018-08-04 19:33:38 UTC+0000                                 
0x000000007e4643d0 conhost.exe        2420    348 0x0000000075907000 2018-08-04 19:34:22 UTC+0000   2018-08-04 19:34:22 UTC+0000  
0x000000007e4af9f0 svchost.exe         164    492 0x000000003ffbd000 2018-08-04 19:28:42 UTC+0000                                 
0x000000007e4c2700 mscorsvw.exe       3124    492 0x000000003fa08000 2018-08-04 19:28:43 UTC+0000                                 
0x000000007e4e4b30 svchost.exe        3196    492 0x000000003e5d5000 2018-08-04 19:28:44 UTC+0000                                 
0x000000007e5bfb30 ipconfig.exe       3788   3916 0x0000000039194000 2018-08-04 19:34:22 UTC+0000   2018-08-04 19:34:22 UTC+0000  
0x000000007e5f98f0 chrome.exe         2748   4076 0x0000000074a76000 2018-08-04 19:31:15 UTC+0000                                 
0x000000007e6c5b30 vmware-tray.ex     3720   3820 0x000000007653c000 2018-08-04 19:33:02 UTC+0000                                 
0x000000007e6e3870 chrome.exe         4076   2728 0x0000000033cdc000 2018-08-04 19:29:30 UTC+0000                                 
0x000000007e6eab30 chrome.exe         4084   4076 0x000000003338b000 2018-08-04 19:29:30 UTC+0000                                 
0x000000007e6f7b30 chrome.exe         1808   4076 0x000000003ae8a000 2018-08-04 19:29:32 UTC+0000                                 
0x000000007e702b30 chrome.exe          576   4076 0x0000000003f38000 2018-08-04 19:29:31 UTC+0000                                 
0x000000007e772b30 cmd.exe            3916   1428 0x00000000199c1000 2018-08-04 19:34:22 UTC+0000   2018-08-04 19:34:22 UTC+0000  
0x000000007e7ef1f0 chrome.exe         1796   4076 0x000000002b91a000 2018-08-04 19:33:41 UTC+0000                                 
0x000000007e7fe210 SearchProtocol     3428   3064 0x0000000010edf000 2018-08-04 19:33:11 UTC+0000   2018-08-04 19:34:22 UTC+0000  
0x000000007e8ed060 wininit.exe         396    336 0x00000000244f5000 2018-08-04 19:26:11 UTC+0000                                 
0x000000007eac8380 csrss.exe           348    336 0x00000000245af000 2018-08-04 19:26:10 UTC+0000                                 
0x000000007f28c2d0 PresentationFo      724    492 0x000000006541b000 2018-08-04 19:27:52 UTC+0000                                 
0x000000007f2d3b30 csrss.exe           388    380 0x0000000074a96000 2018-08-04 19:26:11 UTC+0000                                 
0x000000007f67e4d0 smss.exe            260      4 0x000000002abc9000 2018-08-04 19:26:03 UTC+0000                                 
0x000000007fb24b30 WmiPrvSE.exe       1800    604 0x00000000134a3000 2018-08-04 19:26:39 UTC+0000                                 
0x000000007fc3c890 svchost.exe         604    492 0x0000000021336000 2018-08-04 19:26:16 UTC+0000                                 
0x000000007fe83740 System                4      0 0x0000000000187000 2018-08-04 19:26:03 UTC+0000

把LunarMS.exe 也就是708 dump出来

➜  Desktop volatility -f OtterCTF.vmem --profile=Win7SP1x64 memdump -p 708 -D ./
Volatility Foundation Volatility Framework 2.6
************************************************************************
Writing LunarMS.exe [   708] to 708.dmp

然后就在里面找0x64 0x??{6-8} 0x40 0x06 0x??{18} 0x5a 0x0c 0x00{2}

strings 708.dmp|grep Z |grep d |grep @

发现太多了，只能换hashdump了

➜  Desktop hexdump -C 708.dmp |grep "5a 0c 00" -A 3 -B 3 
......
0b04ac30  10 00 00 00 00 35 c1 50  00 00 00 00 ec 0f 00 00  |.....5.P........|
0b04ac40  84 c7 b6 1c 10 00 00 00  00 35 c1 50 64 0f c9 1c  |.........5.Pd...|
0b04ac50  14 18 00 00 98 5a 6e 46  10 00 00 00 00 35 c1 50  |.....ZnF.....5.P|
0b04ac60  00 00 00 00 5a 0c 00 00  64 c5 22 1e 10 00 00 00  |....Z...d.".....|
0b04ac70  00 35 c1 50 6c 77 f8 1c  d3 a5 18 00 50 f5 04 1e  |.5.Plw......P...|
0b04ac80  10 00 00 00 00 35 c1 50  48 b9 28 1f bd 1f 00 00  |.....5.PH.(.....|
0b04ac90  fc 13 6f 46 10 00 00 00  00 35 c1 50 00 00 00 00  |..oF.....5.P....|
--
0c33a470  55 44 81 ab 55 44 81 ab  5c 4d ef a3 44 e7 fa 08  |UD..UD..\M..D...|
0c33a480  dc 2d de 08 f6 e7 22 08  f6 e7 22 08 5c 4d 98 d4  |.-...."...".\M..|
0c33a490  db 68 8a 0c 00 00 00 80  92 06 00 00 ac 00 00 00  |.h..............|
0c33a4a0  9a 23 32 23 0b 00 00 01  5a 0c 00 00 4d 30 72 74  |.#2#....Z...M0rt|
0c33a4b0  79 4c 30 4c 00 00 00 00  00 00 00 21 4e 00 00 55  |yL0L.......!N..U|
0c33a4c0  75 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |u...............|
0c33a4d0  00 00 00 00 00 00 00 00  00 00 00 a4 00 00 3b 03  |..............;.|
--
0d4348e0  d0 f2 4c ce 31 15 f7 28  46 11 21 0f 86 15 a5 e5  |..L.1..(F.!.....|
0d4348f0  0d 52 30 69 48 06 c7 9f  2d ae 6e e7 78 44 7b 53  |.R0iH...-.n.xD{S|
0d434900  ba 7d bc c2 b8 f9 74 7d  45 f5 64 6b 77 aa e3 70  |.}....t}E.dkw..p|
0d434910  ff e9 d3 5d 10 88 84 de  01 1e 96 48 9c 5a 0c 00  |...].......H.Z..|
0d434920  58 22 7c c5 0d 09 7b 51  21 f7 ce 48 1b 97 81 33  |X"|...{Q!..H...3|
0d434930  00 f2 4d 3b 59 d5 e4 b5  ac ef 11 1d ba 47 ee ba  |..M;Y........G..|
0d434940  4e ff 95 4e d2 b9 60 0c  f3 99 e4 fd c9 04 6c 79  |N..N..`.......ly|
......

flag

CTF{M0rtyL0L}

6 - Silly Rick 100

question

Silly rick always forgets his email's password, so he uses a Stored Password Services online to store his password. He always copy and paste the password so he will not get it wrong. whats rick's email password?

format: CTF{flag}

solve

都说了copy了，直接看粘贴板

➜  Desktop volatility -f OtterCTF.vmem --profile=Win7SP1x64 clipboard
Volatility Foundation Volatility Framework 2.6
Session    WindowStation Format                         Handle Object             Data                                              
---------- ------------- ------------------ ------------------ ------------------ --------------------------------------------------
         1 WinSta0       CF_UNICODETEXT                0x602e3 0xfffff900c1ad93f0 M@il_Pr0vid0rs                                    
         1 WinSta0       CF_TEXT                          0x10 ------------------                                                   
         1 WinSta0       0x150133L              0x200000000000 ------------------                                                   
         1 WinSta0       CF_TEXT                           0x1 ------------------                                                   
         1 ------------- ------------------           0x150133 0xfffff900c1c1adc0

flag

CTF{M@il_Pr0vid0rs}

本文参与腾讯云自媒体同步曝光计划，分享自微信公众号。

原始发表：2018-12-16，如有侵权请联系 cloudcommunity@tencent.com 删除

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