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‎Backdoored Crypto System/attachments/bcs.7z-3e4902c537126b8615a45cb918ed9868dc8b9f6cbb30aa4a392449a61138df64

2.73 KB
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‎Backdoored Crypto System/solved_by.md

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# Backdoored Crypto System
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## Flag #1
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|Team|Submission Time|
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|------------|------------------|
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|LC/BC|2016/09/03 21:12:14 UTC|
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|PwnThyBytes|2016/09/04 04:57:18 UTC|
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|Tasteless|2016/09/04 18:15:16 UTC|
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‎Backdoored Crypto System/statement.md

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Get the flag.
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[attachment:bcs.7z]
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```
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$ nc bcs.chal.ctf.westerns.tokyo 3971
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```

‎Backpacker's cipher - easy mode/attachments/backpack.7z-87482ec9d801887cfb48ec860c958893e7701f16039fafbdefec2edf20ff66b6

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‎Backpacker's cipher - easy mode/solved_by.md

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# Backpacker's cipher - easy mode
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## Flag #1
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|Team|Submission Time|
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|------------|------------------|
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|CS16|2016/09/03 11:57:34 UTC|
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|217|2016/09/03 12:29:38 UTC|
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|LC/BC|2016/09/03 13:35:40 UTC|
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|Bushwhackers|2016/09/03 13:54:51 UTC|
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|p4|2016/09/03 18:35:22 UTC|
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|PPP|2016/09/03 19:25:11 UTC|
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|SSR_CTF_BU|2016/09/03 20:18:31 UTC|
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|Leaf Pie|2016/09/03 20:47:06 UTC|
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|1064CBread|2016/09/03 23:19:41 UTC|
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|dcua|2016/09/04 01:03:24 UTC|
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|ASIS|2016/09/04 02:03:32 UTC|
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|galhacktic trendsetters|2016/09/04 05:54:12 UTC|
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|igorpyan|2016/09/04 07:17:33 UTC|
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|NaruseJun|2016/09/04 09:37:06 UTC|
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|Abracada|2016/09/04 11:55:35 UTC|
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|seven|2016/09/04 12:55:40 UTC|
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|H4x0rPsch0rr|2016/09/04 14:44:03 UTC|
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|Dragon Sector|2016/09/04 15:50:47 UTC|
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|0daysober|2016/09/04 20:14:28 UTC|
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‎Backpacker's cipher - easy mode/statement.md

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Decrypt it. [attachment:backpack.7z]

‎Backpacker's cipher - extra mode/attachments/revenge_of_knapsack.7z-12b99d8dea8468de51af9d0d268ccbdc6cabf341bcf7170ae347b8bacdf4242f

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‎Backpacker's cipher - extra mode/solved_by.md

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# Backpacker's cipher - extra mode
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## Flag #1
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|Team|Submission Time|
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|------------|------------------|
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|Bushwhackers|2016/09/04 23:36:09 UTC|
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‎Backpacker's cipher - extra mode/statement.md

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[attachment:revenge_of_knapsack.7z]

‎Broken NTFS/attachments/problem.7z-5c486dcd3b71cf9e7d91167837ba4cadd4f2bb8a75d34bc637d7495fa05165e6

13.6 MB
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‎Broken NTFS/solved_by.md

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# Broken NTFS
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## Flag #1
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|Team|Submission Time|
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|------------|------------------|
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|superflip|2016/09/04 19:11:54 UTC|
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|PPP|2016/09/04 20:03:00 UTC|
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|CTF-infinit|2016/09/04 22:23:36 UTC|
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‎Broken NTFS/statement.md

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Someone broke my disk!!
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I discovered this command from .bash_history.
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```
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openssl aes-256-cbc -e -in /tmp/flag.jpg -out /mnt/flag:flag -pass file:<(openssl aes-256-cbc -e -in ./key -pass pass:`pwd`/key -nosalt)
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```
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Please recover flag from [attachment:problem.7z].
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Note: the ntfs.dd is mounted to /mnt.
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**[2016/09/03 19:12 JST] The statement is fixed．```(-pass pass:`pwd` -> -pass pass:`pwd`/key)```**
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Hints:
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1. $MFT is broken
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2. You can determine only one key file used for encrypting.

‎Candy Store/attachments/candystore-b6195c6b24f31c53add02c0202f55ea8a11da7d9fdb49d473708cc832ec3a893

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‎Candy Store/solved_by.md

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# Candy Store
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## Flag #1
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|Team|Submission Time|
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|------------|------------------|
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|mgking|2016/09/04 10:02:10 UTC|
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|PPP|2016/09/04 10:07:16 UTC|
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|blue&#45;lotus|2016/09/04 16:00:44 UTC|
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|217|2016/09/04 16:50:33 UTC|
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|SoySauce|2016/09/04 17:40:53 UTC|
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|Public Security Section 9|2016/09/04 20:18:20 UTC|
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|BambooFox|2016/09/04 23:11:57 UTC|
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|Tasteless|2016/09/04 23:48:57 UTC|
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‎Candy Store/statement.md

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Host : candystore1.chal.ctf.westerns.tokyo
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Port : 11111
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Do you want something sweet...?
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[candystore](https://twctf7qygt6ujk.azureedge.net/uploads/candystore-b6195c6b24f31c53add02c0202f55ea8a11da7d9fdb49d473708cc832ec3a893)
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--
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Update1: The flag is on "/home/candystore/flag" and this binary is running on the latest Raspbian.

‎Cello Rule/attachments/cello_rule.7z-0af4d964e19384860eecec452f684804410d93ac0456c70f0139c21c3d17b747

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‎Cello Rule/solved_by.md

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# Cello Rule
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## Flag #1
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|Team|Submission Time|
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|------------|------------------|
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|Shellphish|2016/09/03 04:09:51 UTC|
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|PPP|2016/09/03 05:26:11 UTC|
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|PwnThyBytes|2016/09/03 11:26:53 UTC|
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|SUSlo&#46;PAS|2016/09/03 13:13:00 UTC|
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|katagaitai|2016/09/03 13:37:21 UTC|
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|blue&#45;lotus|2016/09/03 13:59:13 UTC|
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|dodododo|2016/09/03 14:22:58 UTC|
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|LC&#47;BC|2016/09/03 21:12:45 UTC|
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|ELT|2016/09/04 10:07:10 UTC|
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|217|2016/09/04 10:18:30 UTC|
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|Public Security Section 9|2016/09/04 16:45:28 UTC|
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|CS16|2016/09/04 19:15:16 UTC|
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‎Cello Rule/statement.md

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[attachment:cello_rule.7z]

‎Cocktail/attachments/cocktail.7z-41f472b68c3221c8c920027d2325392f23c24eb8c81ebb133d11433b09184d40

2.34 MB
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‎Cocktail/solved_by.md

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# Cocktail
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## Flag #1
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|Team|Submission Time|
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|------------|------------------|
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|1064CBread|2016/09/03 07:37:44 UTC|
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|PPP|2016/09/03 08:17:15 UTC|
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|galhacktic trendsetters|2016/09/03 08:18:39 UTC|
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|Shellphish|2016/09/03 09:27:13 UTC|
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|Public Security Section 9|2016/09/03 11:01:09 UTC|
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|Dystopian Narwhals|2016/09/03 11:08:10 UTC|
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|kokeshi|2016/09/03 12:01:14 UTC|
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|BabyPhD|2016/09/03 12:07:28 UTC|
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|super&#95;nonharmful&#95;busters|2016/09/03 14:45:17 UTC|
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|TSG|2016/09/03 14:58:15 UTC|
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|HacknamStyle|2016/09/03 15:34:12 UTC|
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|p4|2016/09/03 16:30:15 UTC|
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|Ridge Racer|2016/09/03 16:52:43 UTC|
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|CS16|2016/09/03 16:57:35 UTC|
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|H4x0rPsch0rr|2016/09/03 19:40:41 UTC|
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|PwnThyBytes|2016/09/03 19:55:48 UTC|
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|JaGoTu|2016/09/03 21:29:14 UTC|
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|atx2600|2016/09/04 01:23:07 UTC|
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|We&#95;0wn&#95;Y0u|2016/09/04 01:34:00 UTC|
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|NaruseJun|2016/09/04 09:10:04 UTC|
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|dcua|2016/09/04 10:46:18 UTC|
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|bi0s|2016/09/04 13:20:53 UTC|
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|Bushwhackers|2016/09/04 13:21:52 UTC|
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|scryptos|2016/09/04 17:30:55 UTC|
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|217|2016/09/04 20:02:51 UTC|
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|Dragon Sector|2016/09/04 21:39:42 UTC|
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|OpenToAll|2016/09/04 22:16:08 UTC|
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‎Cocktail/statement.md

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Is the order a cocktail??
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[attachment:cocktail.7z]
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[Hint]
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It seems that separated voice of Cocktail is a little difficult to listen for non-native english speakers.
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When you get the almost correct flag, please PM admin via IRC.
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We give you hints depending on the situation.

‎ESPer/solved_by.md

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# ESPer
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## Flag #1
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|Team|Submission Time|
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|------------|------------------|
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|PPP|2016/09/03 03:48:18 UTC|
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|mgking|2016/09/03 06:27:16 UTC|
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|PwnThyBytes|2016/09/03 07:29:16 UTC|
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|LC&#47;BC|2016/09/03 07:35:54 UTC|
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|Shellphish|2016/09/03 08:17:29 UTC|
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|scryptos|2016/09/03 08:18:10 UTC|
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|&#42;&#42;&#42;&#42;&#42;&#42;|2016/09/03 09:04:55 UTC|
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|Just Hit the Core|2016/09/03 09:45:50 UTC|
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|217|2016/09/03 10:03:24 UTC|
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|dcua|2016/09/03 11:54:56 UTC|
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|Bushwhackers|2016/09/03 12:58:57 UTC|
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|CS16|2016/09/03 13:15:50 UTC|
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|Dragon Sector|2016/09/03 13:29:33 UTC|
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|H4x0rPsch0rr|2016/09/03 13:56:27 UTC|
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|Public Security Section 9|2016/09/03 15:28:22 UTC|
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|Dystopian Narwhals|2016/09/03 16:06:32 UTC|
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|galhacktic trendsetters|2016/09/03 17:52:36 UTC|
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|KITCTF|2016/09/03 18:05:09 UTC|
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|SSR&#95;CTF&#95;BU|2016/09/03 18:48:10 UTC|
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|0daysober|2016/09/03 19:00:41 UTC|
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|blue&#45;lotus|2016/09/04 06:59:57 UTC|
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|Abracada|2016/09/04 10:39:12 UTC|
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|Tasteless|2016/09/04 11:01:05 UTC|
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|MeePwn|2016/09/04 13:39:38 UTC|
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|tmtz|2016/09/04 14:16:11 UTC|
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|0x90r00t|2016/09/04 14:51:44 UTC|
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|BatmansKitchen|2016/09/04 16:31:07 UTC|
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|BabyPhD|2016/09/04 19:12:07 UTC|
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|int3pids|2016/09/04 21:46:58 UTC|
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|NaruseJun|2016/09/04 23:38:37 UTC|
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‎ESPer/statement.md

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Are you an ESPer?
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```
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nc cry1.chal.ctf.westerns.tokyo 37992
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```

‎Get the admin password!/solved_by.md

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# Get the admin password!
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## Flag #1
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|Team|Submission Time|
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|------------|------------------|
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|Snatch The Root|2016/09/03 11:52:31 UTC|
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|PwnThyBytes|2016/09/03 11:52:48 UTC|
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|LC&#47;BC|2016/09/03 11:54:26 UTC|
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|217|2016/09/03 12:02:14 UTC|
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|omakase|2016/09/03 12:03:38 UTC|
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|dodododo|2016/09/03 12:04:06 UTC|
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|koibasta|2016/09/03 12:13:08 UTC|
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|scryptos|2016/09/03 12:17:41 UTC|
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|&#42;&#42;&#42;&#42;&#42;&#42;|2016/09/03 12:24:58 UTC|
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|khack40|2016/09/03 12:33:11 UTC|
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|shpik|2016/09/03 12:46:50 UTC|
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|blue&#45;lotus|2016/09/03 12:53:08 UTC|
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|dcua|2016/09/03 13:05:55 UTC|
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|mgking|2016/09/03 13:06:24 UTC|
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|0daysober|2016/09/03 13:13:20 UTC|
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|LeaveCat|2016/09/03 13:21:10 UTC|
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|Blue&#45;Whale|2016/09/03 13:40:56 UTC|
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|OpenToAll|2016/09/03 14:15:32 UTC|
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|bi0s|2016/09/03 14:21:27 UTC|
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|MeePwn|2016/09/03 14:29:26 UTC|
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|0x90r00t|2016/09/03 14:30:14 UTC|
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|Public Security Section 9|2016/09/03 14:34:00 UTC|
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|Dystopian Narwhals|2016/09/03 14:34:19 UTC|
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|CS16|2016/09/03 14:47:33 UTC|
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|ASIS|2016/09/03 14:51:40 UTC|
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|BambooFox|2016/09/03 15:32:18 UTC|
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|j0hnd0e|2016/09/03 15:50:43 UTC|
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|KITCTF|2016/09/03 16:23:41 UTC|
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|pwned|2016/09/03 16:39:17 UTC|
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|CorpOfHack|2016/09/03 16:44:25 UTC|
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|Bushwhackers|2016/09/03 16:46:08 UTC|
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|PKTeam|2016/09/03 17:00:11 UTC|
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|Come to Try Fortune|2016/09/03 17:11:50 UTC|
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|LinE|2016/09/03 17:32:31 UTC|
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|BabyPhD|2016/09/03 17:41:49 UTC|
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|Peenoise|2016/09/03 17:43:18 UTC|
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|takaki|2016/09/03 17:53:52 UTC|
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|int3pids|2016/09/03 18:10:06 UTC|
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|toutseul|2016/09/03 18:40:14 UTC|
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|FFXV|2016/09/03 19:24:56 UTC|
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|Team Taint|2016/09/03 20:42:21 UTC|
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|yonghwi|2016/09/03 21:47:17 UTC|
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|Dragon Sector|2016/09/03 23:15:39 UTC|
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|DjigIT|2016/09/04 00:01:16 UTC|
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|TheGoonies|2016/09/04 01:05:30 UTC|
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|katagaitai|2016/09/04 02:09:28 UTC|
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|ISITDTU|2016/09/04 02:55:48 UTC|
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|n0de|2016/09/04 02:57:15 UTC|
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|cRUcible|2016/09/04 03:44:47 UTC|
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|Doflamingo|2016/09/04 04:33:21 UTC|
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|We&#95;0wn&#95;Y0u|2016/09/04 04:33:53 UTC|
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|PFX|2016/09/04 04:36:48 UTC|
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|PwnPP4fun|2016/09/04 04:40:06 UTC|
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|SUSlo&#46;PAS|2016/09/04 04:42:21 UTC|
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|mage|2016/09/04 05:51:40 UTC|
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|Antichat|2016/09/04 05:53:59 UTC|
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|toftof|2016/09/04 07:43:47 UTC|
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|CTF wo Suru|2016/09/04 07:47:47 UTC|
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|YOKAYA&#45;N|2016/09/04 09:04:24 UTC|
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|g0tiu5a|2016/09/04 10:32:47 UTC|
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|Insanity|2016/09/04 10:51:10 UTC|
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|Fluxion|2016/09/04 11:35:26 UTC|
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|kad|2016/09/04 12:03:16 UTC|
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|Magic&#45;Hat|2016/09/04 12:26:25 UTC|
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|JaGoTu|2016/09/04 14:42:15 UTC|
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|bbb|2016/09/04 15:18:14 UTC|
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|I|2016/09/04 16:20:04 UTC|
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|Just Hit the Core|2016/09/04 16:28:37 UTC|
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|YouAreDelayingTheProject|2016/09/04 17:50:57 UTC|
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|PPP|2016/09/04 21:01:43 UTC|
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|Blaklis|2016/09/04 21:21:11 UTC|
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|p4|2016/09/04 23:28:14 UTC|
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|candies|2016/09/04 23:46:49 UTC|
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‎Get the admin password!/statement.md

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Get the admin password!
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http://gap.chal.ctf.westerns.tokyo/
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You can use test:test

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