> For the complete documentation index, see [llms.txt](https://krjaeh0.gitbook.io/j-log/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://krjaeh0.gitbook.io/j-log/security/ctf-and-wargame/ctf-writeups/ctf_account_1.md).

# CTF\_Account\_1

{% hint style="warning" %}
⚠ Switch to EXCALIDRAW VIEW in the MORE OPTIONS menu of this document. ⚠\
You can decompress Drawing data with the command palette: 'Decompress current Excalidraw file'. For more info check in plugin settings under 'Saving'
{% endhint %}

## Excalidraw Data

### Text Elements

* 80/tcp http 서비스만 동작 중임을 확인 ^uvj2Nx3f
* index.php / join.php / phpinfo 페이지 확인 ^NuQ8AzgL
* 가짜 회원 가입 시도 ^qQ7CAGhC
* test/test ^VMPsJEvz
* 회원가입을 하고 로그인을 하면 접속할 수 없었던 웹 페이지 들에 접속할 권한이 생긴다.
  * /files/kth.jpg 가 대표적인 예시인데 이미지나 소스 코드에 접근은 가능한데 해당 파일이 존재하는 디렉터리에는 접근할 수 없다.
  * /files/ -> x ^F2MdUIDF
* 회원가입 시도 당시 클라이언트의 패킷을 확인해본 결과 userlevel 이라는 값을 함께 전달하는 것을 발견 이 값을 조절 하면 관리자 계정을 만들 수 있지 않을까? ^GNWoKJ4h
* normal 에서 admin으로 변경해서 패킷을 forward 했을 때 별다른 에러 없이 통과 되었다. ^wWrkgTwO
* 파일 업로드 권한을 얻었다. ^v84PeAXU
* 이미지 업로드도 잘되는 것을 확인 ^0sOmqCNi
* 웹 서비스의 관리자 계정을 획득하는데 성공했다. 이제 원하는 파일을 서버에 업로드해 관리자 권한을 얻는 것을 목표로 취약점을 찾아 보자 ^5fcLcx3U
* 이미지(jpeg, jpg, png), 텍스트(txt) 파일만 업로드 되는 것을 확인했다. 물론 그 외 다른 파일 확장자도 업로드 가능하겠지만 내가 찾은 것은 위 4개인데 이 파일에서 쉘 스크립트를 숨겨서 업로드 하는 방법을 모르겠다. ^xqY4ovMU
* .php3, .php4, .php5 ^dNCeOnz4
* php 스크립트를 업로드 할 수 없기에 다른 방법을 사용했었다. 그 중 마지막으로 실행한 방법이 .php 다른 확장자 를 사용하는 것이었다. ^TZPMMG00
* <http://192.168.56.145/files/test.php3?cmd=ls%20%20../userInfo> ^Hw4CBX9r
* 쉘 스크립트를 실행할 수 있게 되면 끝!! ^7pNARJwP

### Embedded Files

* bab87128c701b90cd8ce72382f8614c121518533: \[\[topics/assets/images/Pasted Image 20241108091346\_905.png]]
* fddc8303c25e352e002fc96b339a57c681af1b5e: \[\[topics/assets/images/Pasted Image 20241108091508\_906.png]]
* c273ed4edcf75e295972b15132f285a39fad3f16: \[\[topics/assets/images/Pasted Image 20241108091906\_904.png]]
* 9518b77283da85bc66b643e3b3caf6beeb1bae7b: \[\[topics/assets/images/Pasted Image 20241108092307\_884.png]]
* d14bf3adf072f60037ef7f907e495a9b5ec60e22: \[\[topics/assets/images/Pasted Image 20241108092628\_763.png]]
* 81ec8fefd6d7e223edfdb468175e468ca92c5364: \[\[topics/assets/images/Pasted Image 20241108092658\_906.png]]
* 4d32f3ef7fcf962876098f82d690ea8ef6f80db7: \[\[topics/assets/images/Pasted Image 20241108094141\_907.png]]
* cc37d05fe2adceb756f8181a7c28830397810712: \[\[topics/assets/images/Pasted Image 20241108094459\_904.png]]
* cb59a4a27771b43a0f65917442759afd55a24abc: \[\[topics/assets/images/Pasted Image 20241108094630\_905.png]]
* 13118bf4dd2a9f5066d8aa3883017b91b49e7c1c: \[\[topics/assets/images/Pasted Image 20241108111639\_958.png]]
* 36a9ba0dd6545cbdd709a6e01704d81d0b19ef8d: \[\[topics/assets/images/Pasted Image 20241108112741\_856.png]]

### Drawing (compressed JSON)

<details>

<summary>Show compressed JSON</summary>

```compressed-json
N4KAkARALgngDgUwgLgAQQQDwMYEMA2AlgCYBOuA7hADTgQBuCpAzoQPYB2KqATLZMzYBXUtiRoIACyhQ4zZAHoFAc0JRJQgEYA6bGwC2CgF7N6hbEcK4OCtptbErHALRY8RMpWdx8Q1TdIEfARcZgRmBShcZQUebTiATho6IIR9BA4oZm4AbXAwUDAiiBJuCABFADkADX0AZgBRGHKATXK4ZQAtZgBpADYAFQBVADEAMyhkoshYRDLCfWikfmLM

bmcADgBWABZtBK2ARgSeOoAGAHY+k7rDlcgYdbqEvvit+4gKEnVuDY3Xw5bOobHZ9QHA0F8fKQSQIQjKaTcHYbM4fazKYLcVHQiDMKCkNgAawQAGE2Pg2KQyvjrMw4LhApkpsVNLhsITlAShBxiGSKVSJDSOHSGRlJh8xoR8PgAMqwTESQQeZkCfFEhAAdW+km4UOmuLVxLlMAV6CVpQ+XIRHHC2TQdxxbHp2DUj3tZ2x+s5wjgAEliHbUDkALoS

8jpf3cDhCaUfQg8rBlXBnFUQLk8m3MQPR2M4sIIYjcQ59M59W4JD2e4qMFjsLhof4fGusTiVThiXXPBKgis7OPMAAiqSgBe4YwIYQ+mmEPIawXSmWzMfwHyEcGIuBHhftF1uZx4yJ4hw2CQSHyIHEJUeX57Y7NHaHH+EneaiUCEgYgiB58eUqclwSRhIrKaBsFyHDwGzYBcZyHJoFbYMQUEIBcpwbDwYz/IcOzYBBgLHkCdSpsw7jiEG0JgA60yU

dCwb5AAvishTFKUEgAPpbAAak09B1DKfiEJgmhGAgcCaKQAAS+gAEqprMZElIsyjLDiaxoFsWzxGcCTHiehyHDBOx1B8bqoM4wIbG8HxfMQPxoFcmkbLcfQ8EeDk6X2OKwvCiJoMiVaQOipoBQaBLEnylLUuQwr0oy4o4qy7LetyvLkpFgrRSKcX/lKsrygp5qFh8eJhZq2q6sVhoIMapq4uSFo4lakiZoGVHFE6bKukWHofMlfoBrkoY4mM4YIE

BqA5iuOLxsQiYSLghypumxAtdeub6vm26oFsIKgn0O2efqzZ1kih3VkwLYcG2HAdvaxY8CWJZbH0/ZDsEW5jhOCBTjOxBzmkYpLutxRrhuH07nuB4Vgk6FtZAF5Xmgk23veW1Pi+G1vh+ZTfo4HB/hKUpjVtEBjMQxDYE5Zx1NgPBbAgdRbDwCAehh2AvJodTPLgWwXNgfQbIcuBjHB9PEaRuQUXDNHTHRRSMfkzGQKxZr4kMxAADIAAoDkYxBnJ

0O3YNJWv4PQOwAEJyfACkLEsqZqdtdT7IcsGnC81w7Ee3Ymd1ewXO8OI2XZqAVpZXsJAHPClmCgIvV5cIIpMfkomi+PBZVpURQK6BCllYqpolHLLdnUW0rFBeE9KNUFfVRWvqVWq2TqaB6sUJXqjXZSFUtwjWraRYfB1LqwN1IV9f6gYhmGuARltyPTQmjsQLgPC9ylq1IzeeYIA+qDYXU1yM6WZ2QMdnDcCWTYXXW123ag6FAjse2nyUg7Dnv6P

fQlv3/QuWRrSmvqUGm494GUhkcY+oJzzxkRhNbe+oKSo0+s+b+mNNzYwkLjX8OVAIk1pruAsOwCzYDGAHBAPADiRx4JofCdQMKQS2LgZ445iB1BFn0cWBAyJ5GotLQ4tEGJMWmiTEkZx9BnCMKQGUnQjAAEE2L4BJAMHYLRCA7AoGMAAUtbOYEg7bKQdkWYEFx4gw0jjsXY1N9K+zQOZehVkg7lTQJHUx+1o5bG0scOoFwLgbA+N5JOSJU44iCmR

EKHdwppRztATKFcmRTjZMXX6pcMrl1FAk4auUu6KjrsRKqTcQ5t1VKVHJZo8mWj7s1Ae9oh7Oi6u6ceXJ+pTyGvqEas9iaALjEvJMRFKkbxqfA4GAhd5bQDseV20cQrn3rPvLYZ4cSzLvmRAy2w+j7W7K/Qg793qfy+j9FKf9AbdJxCA8G+9dxTN2ECY4/icQI1OYgu8xI0YHNfBgz82D8a4K6RIA4x5NC+MgnUDc2xND8z6JoPoRkGaczwGMKFu

9aGshQpoLhppeHTH4YI+Wwj9QqwgEIegAArHglRMDsN0QpEcmB4r6kdhWZ2EFA76lMuZV2jj9TBxbrwXY2guzoRLDsGGZwdgXACYnXyvBX5hKxJndUqT0AAGJDgIDVWqwuSTko8iVbE9J2Uq55RNLXZUCriSFN5cU0Knd8rdwqY1Kpm9951M6qPRpvVmmT0GjPOeTyWK9PmjsdeGYhkLw2mMosbkLIenuUdG+F80B9AlUshNV12yrLpi5bSAtXof

zeagw5s55wnK3iMol65QFbXAdcnYEFBbWseWWoBxQkGvJQRjYotLk7oBRJEbAcBUDSFkKgQAOIOABE+wAJUOABnO1AgBN5sAInjqBACIk4AEPHAAi46gQAqmuAA9xpalABhYB7RAPtUAB1DpkIOidM751LrXZu3d/5OBQBlIQESuoQpjGfSMWeUpTKv27XIogyg5kQGCBMVMNYoDmAIEB+EoGoBOlTHoTIuB4xMHGuG9qpB4TxgIIeulZRT3nuHV

eqds7F0ro3duvdaIhCIekuEN9ZF8RCDQa29DEkpU9sOPEIRisRFlEqEIcoGw5FGGUBral1Ij1GJcRWbQLLbH7w2doAO1lnG8D8fEC4kdthxzppKnyPaDxpwxOE81pJollFVequzWqkol2s2kmKGT6XFAAsa2qPdLOWoqg3W1Jr7VmsdX4apWZB6Onqe6/ePUcQTwGmgaew1RqYYQQG2ay8eYhpWmG9Loy97gSOEZZ+19ayJtQGCMrl0VlFn+EeMV

qE40sV2QgC5X8i1/RLYuf1kBzlgKufuXYJWwIwMvL1sDLz9mFpxN2+YS9tBwEkIOhQqASVsHjIt5bqBVtLbgPGL9qBAAZy4AF3HAADkzR/dFACPHpmlgLbK21sbY4A9nbqA9sHbYMd87l2JTPtfe+1un7v2/vwP+j4gHgOgfA+5s+TBoPuDgyB6kSGPgoaiOh0gaXy2UlwxwfDsn9ELb2299bm2Se7eW5977F3H10YY0xwHqBWPsfhpx7jRY+N4o

EwSkmWiZQWwAI4ki1iMDWkkKDVB6BcSQAwSU9E6HIkk0n9FKRUgy4xJxtAuVZcUUyx5TGGacc3JElCjNBNbtcMzGcAtRP5GXVzhqEraqc/blz+dMntOyXa3JIXMaN009ayJ1UfflL98UJqzq4YQGHg02LTSfTeqS20jzqX575ZKIG9AuBOEDNDRF5txVI32noTCvxFxSupvK3MmF1Xb4ZqRLG04sF44Eta+195+ppxHO6wApLFElYsRJs4EYxAhD

STYNUTiMo2IAHlvBaK2IL4gRgWj0DkSqLtNskykAJFQCiCtqKD+ViTegpBDiIQaMwCRYxFg7H0AkORnFJCVBQpvmY2/5q77YPv6i9FaKriVoXI1r7gwpUJORjZwJYbwxTYFqdqqifI4wZB4wExZJ4JlDEDYSaBjB1C4DEBjCXAYQljUwXAIBkJjAVikEipMIJCaD0z8xnAUJrzFQSz958L3AyxFByxgCH4FCCYSCC7lAXAkhyIADikgyuEOn+ucs

mHwjs2EfwimRubKSIdQ/suukAPKxilkxwp4RwBkBuGhUgHOrcsq6cFmtuVmbuKqGq9miSjmKSzmuccSbmuCXmpqDU/u6ofmrclmZSdU4ekAkeQy0eseMWrsCea4SeQYKekAHSfqhei8mWSYFwOWzq0BuIxelWhw9CD0yIdeFWZuVeNWDe6kCy+krste007e028BEA3exaAMPWiRwCQBA2ECO02w4qkBE2batRrO0AhO6AgAADWAA7k6gIADFrgAC

2OoDDGACh46gIADtDgAI81XY3ZlBjGTEzHzFLGrF/aZAA5kTRz7FQA/r6B/pIgQ5HpI7Q5kGw4MDw4wb4A3Eo5wDIbPpoY2hY7p4444b+AE6EYSCbHTGzELErGpi4D0ZsCMasBM4s5jYIBcbGac48D8ZFBKwlAkyC5jByIyJ4hyLODEASRazmASRDB9AWziRsQq7oAGLq6rB1YBza7KF65FjabqbG4hxOTGQJzIl+TFjW4WFeF27pTOEGqVzO4OE

pR6p5zxL3Geb+E+aWE+G8B+Gh4BGeER5OohGuojz65xZeheqJYxG+p/LDItrKxZ4rwbBpF5blqbRFi8yHynA8CoQFFzIQHFH143SrK7CQSCyVh5p7JwEDENFdZNF97kRH4UQn5lAj5j4T5T4z7z5wCL7L6r7r7v7QDSErzf6/7TD/6yyAFgztFTJgFRyNqwK9GwEdoDF4iIFYLIE4JVxmknpqqUxjBkHEB9DECkGuR1AFhkyaCgiCzkIjl4AnDYB

AgwoYo8JSwcECKyxol8G85xmj7j6T7T5z4L5L4r5r4b5SF6LZ55lyb7zoRxA67KaUKWQnBGFaF+QJDaBGGBLSpnDaDoQiqnhfnfl/Ct7FBypoARJVR6q2a2EObJLSlOH6qO4Sle7VzqlKnCllQm6+GWGKkOr6jBEF4upRZur6mREtI+opadLY4WmZ7JHzRJB565bYWD7ZlHmokFlF4DZlh/ABmvyzK/BGHLKlHbTbDPQghnDNbKw1EhmdbHLNHmn

FlVpsmQzllMyvxNpSUPI1mPid7FBwDPaRlYpFA6VFABT6UUSxFgB6VgAipPkcFgBvkfnfm2Uwz/BGUAEPKhBQBkj6DnEyAFhaxaUTb1mkBQAWwzQ4JoB0WpD/zjQQD85C4i5i4S5S4y5y4K5K6b6kx3iYJmRvnHA5FHjYTHgeQgjSwQDKC4BvH2jQi8GQDIGBU/g/IhUUQYC94RXYm4ndBQAElEkknYBkkUlUkpVfrYDpVvk+Lew7AehghZoJA8n

URFUlXcDOxbDlWVQMhtV5mwh4ETbIFyKrUhAkwMh74QDLkYmEqcQACyWszAWiDQ9ARgNJgxhGchdWZwmkSmOIpkD0zsHJ3KmmyaT5p4J4JwOkp43s5u0qpmoS5h8qlhIFthmq9hEFuqUFsprhRq6FgRNqFqgeapQWvumpQR2p2FoR0W+FnqiexpyW7SaeE2d2WWB5oW+eQMZFDpQOQIz0Hoo17p3A4E7ptW9oRwLw/wGk1qOyb0bW/R4lveDN0lw

Bg2WarpBwU1HG42LRraqlqAHWs2QxgxeIkQ4Q9x5A12mtI42tRt8p/2zGH6JxZxFxfkVxdKLxEgMOkGjxiOUOrx7xqGmOpFQ8fxeG+A6xgoutOteIEJUJMJ5taA8JDy7OfJ+8XOPB+KQ+ZQIwPAJ1xAQwvoA4Iwt1c2D1phsEShRhpkzwpin1xQ95D8YEv1BwyIXMMMRkwlxhMdbp4N5mkNSF0NdmsNkp8NqU1h0FHu8p3u2NYeuN6NyFRSWN3mG

FWpYWUeupceERJNURZNsRpMlNytlpFF2eVs1F6RGeTNqAo1wKFR1qnFfk5w3NvF15u4GyAp1RItHeM2Xev8EtE2/W1aMtrFCyPsUdStylzyyCalT9Xamt0x8xm6gAGquAAHNagIADodgAH7U7qQOAAuXagIAIgTgAsYOAAGq6gIABhDqAgAY6OAATo4ABrNqAgAn2M06oCAAnLYAAuj6D2DqAgAMbWAA6qydqgIALsDgALHWAAnTdoAADo2AAThA

KCEjqDaAkodCzGoCAAAzYADorgAgBM7qoCAAQY4sTuoAA7NqAJ2gAH91naAAZDagIADGDk6qAgAKvOAA7LfQ2g4AD+1gAAuOzGAClTSw1o4AC6rgAn02oCAAwy4AD7j7DgALhOAA14xA4AClNqAgAKK2ACQHYAAyLgANZ20NhO2PsOAARvcMY4xA3w4IwoMIxEGZAAHyoBrCWgHqgNTHgOoDQNwOIMoMMM4P4PENkOUOnYXZ0O1PMNsOcO8MCNCN

EwRBiOSASNSPDGyOKPKNqOaPaN6OGMmPmNWPoP2NOMuOoAePeN+OoBBOhMRMxPxOJM2MpNpMZPdPZO9OrbOAFNFPDRm1M7HGXOZBW1g6XEa122u0O13FO3+VPH225yo44jo6fEYY/FkW47/F+2lPlOVMINIMVOoOYN1OEOkMUNUOtOwvtPsPcOZM9PBB9PiOSPKDSPyNKOqPqNaO6MGPGOmOWPWMLNpNLMrO+MBPBNhNRNxMJPzP7PpMYvHNYunP

nMh0M6wksakBsYIlIkW6x2MXx086J0O2C59A9CSAXANB9AtBaySAjBawcDyJQBaJnBwCpGHm2xq6nnYRewCrPx+L7jHAWvWqmT7QfV3maZgSPms1GQHDCrPDPkmGH0hL6gAWoBAVZyI0uFO5d4u6OF91I0hseZD1T1o3B4qlB5VSo2j1YWtTz3hEGnFAJatKmle1JFzTZ6SF000WS07xgJipAioS3Cn1ppFh/lw7V482oBcznAgi9hBmi1iU/w94

RlTwD4xmYllBn4X5/TX5nC364D36P7P6v76sDvyQ777UH5OWtElkf1yXUEwwK1s5/0ZF9FdvoLvhfJNk/ItkRU7BsIYQDnkGkIvCQRXDaQbCYQ8DdkVghAbBkF9CYRnDEBAqzmSzsFSy4qSvon8HoDDuX5jsTtTtP4v5v4GuLs/7Gswo6EskPBIg/Wl2aGaY5H1uN1iuTKClt3tzAVQWgV2Hd06q92in91yluHJv1xIUJuT0eGMcz39wE3pvE3xZ

Gk5vEUJH/0ZYFsrwDi2m0X1ULutyLVlvVqulliukmsc1+QcVppNsVEnjvUQQduP11FhkSWRkZHv2yVlmbuemIJVkb2TaANq3qWQCaXxjaUUSmUGVWVGUcGmW4eWWTKOVFnOV4huUeVbjeUOe+VRD+XVUoHcChWNV84C7C6i7i4SSS7S6y7y6K5FvTX9WDXxAGTgSULTIggWQnAcEzWlX7y8YLVMU4hVVBW1WoDRcRkRX4CyvyuKvKuqvquatyLau

6tzuZdpWBiZUWSukHili3Agi7jFKQDFVleVfc7oL+VbV75rWAsfCbXbXrVf5LvzcrnSvoCiGVAahsA9BaI7A6gIcB33WqRFjPxxAvUqF3SjVqYOsoWxY/WUJutPUjlYf4eg1mGt2AWWYd1gVw1UcynBuwXRvwXD0alsclLeGY1oUIXT142z06m4V6ljxL2EXJ65urf5tZYNBielsRrlvFi6ZHA1vV5zV33xqNu8W5UvD0JgRC2iW1ni29sAfTDH6

DsSD0AnVdVCxsSy5sAnX6Cz47ADBnCEhDDVDPhZmSfHnbcFkrsgxtHrtlkuSuS7A9GWf7vs9PPHpgNgnLGoDuOLGoCAAuC4AD7tJ2gAHaOAAdS4ABrjqAgAFMuADtCw+juq44AB89qAgADTWAA/NagB+EwMEIwPgNo9b2E4AEg1m6gAFquAAbdagIACATgAN02bOADBNZuoADg9gANTXaOoBx+oCAAOE4ABAT0LqAgAALWxOAAJ46gIACM1gAqBO

brTrUN4OoCAAR4xdoAFKj66gAMnUAD8axYLJvZvFvNv9vzvbvnvNGvvAfwfofpA4fQQUfsfCfyf6fWfufBf7Dxf5flfNf9fzfrf7f+D3fqAffQ/T6Bx4dvAwOdzoO4OhvXzYGbzZWCOsGLz3zbxaOHxnt+PfUMC19r+10AxvXYuPyt629HeLvD3l73n5B8Q+YQZfggAj5r8i+G/VPhnzCbZ9UA+fQvvvwr4QNUGR/Rvi31QBt8O+F/K/sP3pzQlG

cgrYVr/URJeteMErXgkdVPwC8JIQvEXmLwl5S8ZecvbIBdyV5Idc6fKQEAXWUz6RPEz3DTK92tQvke0w1IjoDyhpkcYa9JSAEXDB5BtxSnuKHu4WCyj142iPJCgx3Xgcc02GPBepm2m68ciKFNEioAKE5ZYs6u9IZHRUV4SsQO7cLIgLAPDbBXIKnanvZAbo8UfSRYCCCcE/KV428D9MWt20aL/wSeavNdsZ1ALuJo4Kaczruwzz68gGdRezpJT0

rOdLKZwNzk5xjJTcwA5kVCD5y4LngXKAXNQEFx8qWc/KAVWrn+DqrTUwqYoCKgdyO4nczufVAbpzlghPVngGyMsJHFPA5ESuM3bgJpBghipngliatnNz8GVUeQEXYKvV3qoDDMgEVCgBqFIAcgBgFAWfOMIGqDcny+0XDpcGpj7QmYiw+qssPUjScFuK1ZbjtQ2o8gluP+Fboh3zIcCwOnwc4ZcOuHZ1ZC13VuM8F4z3dWS9kcyj93Lo7Q3ylwF4

J4jAgnhSwSgr1mDV9YQ11B7dTQZ3W0H1Ew2kFCNhD0MFxEY2rHfJAHkUEscTBcPNMPjRsFACiaWPHjqTT47OCBOGRamkmFELE9fKWRcsBZAEpKd5k0eSIffGjh0xwIMKZ6NpySHP0e2qQrnqB2oixk+e3A3gQMFF7i9Je0vWXvL0sr0UFIe1JDgfg4I89CUQgbRBrA1AtAZQhICgHPjqD0B6AYwIQHUC1gSRJAVIG0Yr1zLK95YqvPrOr0yEPRrg

GyGCLr0E4wFrO6tfUHNgkAcBKQiwSPrQ1HSoA8C5xDgIAB5x2BqgEAADPYAF6a1xkWLgFq1KQFABkMQFQCAAI1c3SAAZVtQCAARnp4aAAPTtQC0NAAN+2EN2GgAVsXg+gADBaiGfDEfoCXQC5jSA+Y4cUWJLHxgKx1YusQ2Nn5fpSALY0gG2M7GoAex/YocaOPHGoApxqAWcfOJOKHELatzU4k/0eZZjri3/N/hBg/6fNPxiGX/r83/5fE82QAn2

vjlBaLiIAy41cYWOLHEBSxW42sfWJn6bp9xh448d2L7GDjhxY4ghpOJnFzjtAfLegQK24CR08hLAmOmwMOoQixgbENgM4A1CYBSAPQFoJUEJAbAoAhwEkBQH2gSRfQ2AW6nSVPIfc9gsgyhBBBciedXql8MEPIM5K8o9o2gWCN2AMjipeYkEQkTHX8hqD/WQPfQTBQZHUipSCNOkQYMHrQ9Y2pggpOYJI6lJkeaNVNpFl5F4V+RhpQUU4NTwuCqa

VpXABJElGdCsiKosOHKK9IVZiwio1TrxRcgbIUQYqEKMLXzQG9tRKQ0tFGW54DsXRboj0V6J9Gz4/RAYoMSGLDEK8cy9o/MjGN86rsZKEMTXh7BTG/0oCBQ1WpmJI4Nl0A3yVAnBVbLYBsAPifWFsE7I8A8CYgIFM9EwiTJcAfMf0ucGLoBk8u/7NgtigXLAdwRq5CQK6K0TujPR3o30f6MDHBjQx4Y2bGVJPISDIILwaQTJNRFxB0RmmH+vqGUG

6hrUfrANoqgpEg9KOruGjpG0h6MjLJzI3zLZPh5GgHJKbbkc5Pah8iPUAo5ekKK8kiiM8Yo+aL6ACmHDpqPg74f4LASQR9oWvH1udDCGVY8OSosiBMgrYjdNRB7FkC/U56WcjOtUrIaeHAghQlKe7FqbZy/BaU+21EcoTGUqHURjKplYSkUGcCuQqhvMmMg9OohizFyS5Kqa2haEGBAuXlDoWmINDLV9hdXBruFRJhnCLhygK4TcJK5Zd7hMEWKZ

7HAj+QtkSw2avZCxm7DiAWs3oejP1DHCoAEVOiQxKYksS2JHEriTxL4kCTbh2XXcPuEm7HARyZYd4dNU+HNt9gFYCSQ9CPCMxmZOwB2RrMW4bdXBjsoERQBBFbcHRO3TgUOxBBawEAciaoEMFhFXcNcaAc4MeCukPdyuyIeSV9Ve4GRXggsU8JCHxGXleSYrYkf+VJF6SNBfdcjl3VDYmTqOMSX6UZIVJgzORZgtkUjxh6IV2O4WHkVDNckwz3Jc

MzyXEXXrqzkZ2eHRJ4OwoZED6Vs2aVcHlFGRL6UQy3CCD0jFd76SUooaGVpm6ilp+o6aoSmkgC8BwkgWfMoA1AkodgMAZgGql9AbBn8J1ORFrFKlHkoxRclXgrLjEZDGZD0PxDpH3Cpj2ZGYzmdmPQC+NUAgAUdHYGFjdppukADdo4RIXHHpSFFCqhaw1oX0KHxd/G5u0hBznEHmNtF/p+Mdo/iXa8GN2n/w9rASc5MeMCQCUYU+NyFlC6hagDoX

3jQkodBgWRKFYDELwlEgjnHTWl7cIAMvTQJ0E4gDhKgnEIwBcFwBKtDgIwNiGMEqAnUEgZ8k6cguEkSC1Cvid8kJVcgwxcOMKPDqZCKxtyy6mmEVJZDLCMxRqw1ZNEJVfhPSU4IUV6fpLMmGT7iug76bPPpEWTjBONJeTZJXkWDF5VgzeZDMgBhFuOe8nHiaX45mlRRvknoGjMvlZEciJ8FyPkTClzJoEXStTpQmrb4RWeiQ6mToK/lpS9KzokmA

AuwBAKQFYCiBVArGiwLJA8CxBRGNOnRieCsYitJgsuRyUcFUyfBc1MIXAMECR7JAjVS6lQ8epdBBIJO1Xi+JwIw5XAuO02RqSvYAcO5WTA0irwdguACFItPSlFAcU8svwSXIkDTLZloC8BZAugXLLVlt1cqaeXoT51kR6HO6PtFCXYdFBfiEGioN0lvSRSMSCeVSMyXhsfpOS+jiUqBlFK7JgWKyZyKcm1JbBGbAitEXJoIz6lSM3yVJnPmBhvB0

hXwRVUyJ7xdg+kISvzTvm5DCZJRR+aHA8QxLX5CQ9+TZ1OX1ExlklQzvGKwXJo9IeCxqdWROXFDuZeokyvzIqESzpgplV0iLLqF1BGhYAVevgCVnuU2hqskLp0LC7dDLlUXI4TF1Lk7By5lc6uSbImGAVtAoIcVL4jUIipNk6EaWVmztmVZFMcUytq7EmoBwM5NXH1X0Ldn+qJAxi0xeYssXWLbF9ixxc4tcX9c7h6waynWlwXbATwWEbYNu2m5J

q5ZOwzOb8OBH/DLO63P4ZtzEFgiE6ho9AGcGYCz59AwuSoIQBrn3FHYjMSCE3JRGVZBYWKz4IHn0ja47kfwc4M9BhSlg8Vuof7jbnJHjytB4FPQWkoHpUq15KPMesx1XkMrSlc9FlVUqzaODcedSkCW4KTAnVml+9LIpYieoV5QpdPS6CsJJlRS5VxYS1s/FGoN1EpwZZKTTJ1FpStVuykAg9BRD0J2aBqvXhzLVXEKIApLBRRY1N6AAM8enE4Cv

eDCsoKRuYWUbqNqAXAXTmfGPigcltV8fwvfHPNRFrzb8VXk/7PE/xPzfUH8wAETZgB4E0ASRr0ZkamNNG37Gov5Z39yJitXRdKmonFyIRg07ABrGwCUoQ1bimlHCLrmH0phimXxOa0FrPxk0ymcCG4icjoRF1qkmOWEte4LIu5umB9hXiPBgRPW2khuikrHk0cSVl6rJQ7hvUo1qVypYGWPUsEDJrB5SmPNDPjzY92Vq9eIlyvLQnyV4lQADfaVa

X6YNkyICIbW3rlFFwN3pe+K7GBCeIRUh8KmShtGVobNVGeBmXsqmQnB/gp4bdmBgs7qzChqquosRsobXoXepAk/qgEACxa4AF2W0Jlo0ACMg4AFea9sRixOyAAcCdQBTFNmvjTdKOkAAhPfQ2YWuNq+dfJRTQqU2ABKrrkaVjAAF7OABfUcAAIE5ukAB8M4ABFR1AIABee2vnRokDjap0k2i7dNvm2LbUAq29bd0y207a9tPjA7cdrI1nbSBrC5R

Tdru2oAntr21AJ9p+1/aOF1zB/i+N4XP9eNbVQRe/yE2/j+NP/d2hjkkVSaZFEE49IDsnTA7j+5AsHSE2W1raNt223bWE321jpEdp287fX1R1XaWNm6W7Q9pe3vavtv24iWHThJaKRWrA/RSOt57oBMAguFoDsDYD89jNWYnMjnXhEWbiwykhZHFMa0uR6EDm7TP8H3BuargoIF7iHFFRvBJqPc7CASMC1itOlJIgHqPLPVhaL1oPSLe7jo4xa71

cbQpRPSfWAzQsyW5lS5Mx67yP1Hkr9cKJy1kU8tuAY2cWz3pFawEFiD0BWCqLVaKsuRB+ffH3U65KezWj+Rz2/lArdu607PBqB2gtAjA+gDYLxMqBwBZAhwGACMBJDYALYV4dZcgqRXLt0FOymqV1upgpyYpilQbQQvbRN7De9GvRgAApJGCAZQNQDWwdAj9cAfGAAEoj9gAWUXJ0DvHfVADpTn7Vms6ZhbeKU27oodgjQADzdgAAw7UA8DVAIAA

8x1ANhNIVbpAApeO19Ter+g5oAAKas7LOkAAtDcMze0ONM+DjQACDjh9QADg1Ezdhr41gmAANIdQCTpAANguABezod6AAfTtQCAAKIcAAVNUWNf2bNAAlD2ABUns3SAAKrsAAunbAdUWYUSmkE0lnvsQCH7j9Yhs/coEv2oAb9d+h/VACf2+MX9ii5jaxp3Sf6OAv+//UAZANDiwDkB6A4orgMIHUAyBnHWgcwM4G8DqzIgyQYoPUG6DjBsjRUzC

bsGuDvB/gx5iuZHEid9zUnSAz43I4BN9xKDNTqCO07xF9OgFozrxyyLt9Z2EQwfqP24tT9F+6/bfvv2P7n9zh1Q17w0NaGADwB0A/IogNQHnDxhpAygYsOoAsDOwXAySxsNFjiDZBygzQYYNMHFFrBjg6gB4N8GiJdA5XYwO0XR09F7AzXYSmICVASQCAWfJq2DSiC7q86xvLcGZLXACIR4OmK6WUyxCnylwVzXWk7kKCQ4EEMSVbsFjlFdMAsBu

okplQErUloeykRFvJXZLzJt659TSvj3FKY94MtHpxzfVuSM9+8rPZyp/Wb1hOuANZYXrtKM0si8wrmP8AD0yqTo9kRZJXvTRyqU5EyZNLfLfnIbN9KU8Mi3omWZTdqnejYN3t7397B9cAYfaPvH2T752Gy1BZVKaFnJtVi++hLhzyJHLy0w21qTME1oPZjIqAB7H2BFN7Ytg/29AEKaP2inZTEpm/i+k4W+HuNh9W2uTpp1fiQjztL/pqf/F07/m

3xGIyC1k0ynxTy2MUw9klMDGNFEdVXcwNFZaaNdUrUdSvDJMUm+9fQAfUPpH1j6J9iKs6WbqPqvAnqoqMVJNS17KYnIpx5+PpBd0wQdeCk4jjCC9aKFTgTMZ3WXmOB3HQtxKsPV9OeNRao9aBPJSPQKWsjPjdK0Gd8cZUQyU928tPelthk1KOVh87yZZzz3lA0ZAqhihnIPrRxgQB6sEFBqJl1oa9qyEsLLX3DbI2e+J1DalPa3lpOtIBTk86Qr2

K0mpvJwjcaoc48yrV5q/mZat0oHmDRaZ/Y3GazMJAHVTql1SrOIDBcmQnqzWT0N9X9D812u3XfrsN0hz7hYEAONGZdKERPEra0rpzTMQHH4zT1P4JHCzV7CXzua4oO7IiqTHpjsxowPMfqqmza18QEEO9VBDaRSw1m04LbLK53dO54qKCy5q9gHg+zXqvOQXPVn9qe1g6lBcOpdNa6IAAwToFrBOonVRCHoOdaeRiUhmrdbNCM65G2PeKBYwIdM5

QgOOvxy6Iqf2M8BRB5c+5aHX7j2mbqB7T1VZqwg8c+lTye64PV49HveNxbaVIMkPDWZfXo9U9dgtlSvTx4+St6K8WSHyqlF7wLEJ4c4KEIg1A4Rzsq2vXkRHJDyRKwylreqra0GcOt7Jlc25A2RqEeTZFPk0Qs1ok4WjDh1/XCwIaAAGOvobYS3DqAQADUDgASrH2xhEwRgAeXSoBAAE51nZAAk51bjAAJ0OABI1ZYaoB2D7DV7NhNKOoAaDZVrP

idkqtcBimBtSCRlfsM0HsrHfPKwVaHFFWyrFVjFtVbquNWWr7Vzq2we6sk5erkB/qyVdKtDWRripjjffy40k63xARjU+Ea1PvNhNr/fU5EcNOgnpFsR5nTjG2yZXpriinK/ld0NbXN0S1ka6tfqtNXKxbVjq11fNODo9r9fAa0dZwHDWMWSu208zntMUTHTPGZ07/NdOiELYkga/DkSECHAtYMoX0FsE0CC4tYPQNDKQFprG73FRrCQTEru7Wb1J

ClSxA3X1Jcwnyh8SC50WtTl03WR6h8v1pC0h6Xj6Sp47SIpWmWSziWiy5WasuK3MKdZnCvZdZUZanL36qRXnplCFaYTYCc42cbCsPEiZOJtE30rq2aTaeLWCK3Oda0LmYrS5uK4NmZ7WJLEyVlGBvpG11ksYx7H1WexJg5F9IGwbAhe2IDDSEgYwTxBsiQi4BmEu62CBcHghwQRUKEXCIJJYLcJTVIKrgjRPb0QAkuOwEkBbGqAJBjpjN0zbXIZL

qQW8lusMzbrNs83TEvYCC2XgrZHHFJB4d8u7ByK8wvYhhUW7cZbq6WrLwPCjkZavVy3pbZlxPUx3i3B5VbG819ZrffUODM9tS7Pa9bz1G6Z69NTy9Wk9hl5DI8o3NL0t4p1ocqT1C+8qrxN+3m96G2K5hvduQRsIO0IwkpSkCXpFACgY4HdwFgPDFMliLliIxNpCnB+2AfQMQAAC8z4AAKTRwkHb5bQAoCX6+gOAX6VMKlaI2a1AAPBuAAEfdIx/

2AHimIB89BAdbAwHEQCB3tjqBQOYH8D5gCg5QfaA0HGDrB2wClM/3ZApDrXMWEsiUOP7NDoOlAEgfQO4HiD5B9HHYfoPkBmD7BwTp8MXXraapgRZqaEVU6RFt1p64BIkXRHLO0muIxICIckOlAZDwR8A5Ec5MxHEjph9I7OBsOOHCjrh6jdIl2mmBmN9XWMfYuEonQguUQocCGBjAKAnQIWDKC1gkoKAJKQXIcC0T0BqgQk5m2bs8S92wQ9WUas3

iSvXTYsMEeIHLQ7s9gFL903mCPca05nJbRZ5GgWdltS3otCt2LYvcssJamnq9uyw2Ycva34ZbZxGblt8mcRDbzFLaK6TrSMwz7XSlYeVvp5yqfLCnF4AlNnOP3khhJ5+67dft7hmeahV2KvvyFbmjV/t9qV+BPZXL/prZQ+LgFoLJhyY+0SxNgE0DkwYIdyvoCzAMhiokIhwfWLQgSBkENgS81gq3vzuOrC7hii4HAEqByJpIWiCgJCersyZa7kA

R2CWByJqZSw2wSagYSOAyDjw81GGBmY7s5P25IcCixGrDtipdC/mn7jcaMiKY7KdLvDhLb0sgUWYtwW4DLdMmz2GncFUs7DxZEI8Wny9tp6j2T0a3OnWt5s5lucsdnfJGoIZzJ24AHArgkEPDWieiFU8grqyQc/lx8R4ckNnbSK3p1fr0y3bmz3GQeBFTe2VKBz9U2UGaNTXUAbVuFp30AAxNbeNQaABdBoACEnrnh3a9aMOvWrTr119OI9fevTr

d/Jrc+L8NXWBTgR24oJrp4PXRNAE8TUBMMfqzjHH1iQH64cOOuqBwb0Nz65tMeP0bXjjTVjZRIgvXTFAGABcH0AiEJIuASoDsHoADh9ARgTsn0HwCz5Kg1JBY2kE0AFgNwmgTEBIM8STVUXAsBZLcCKw2tuoZYNTP8AFt/Bo8GIq+APOlSCVKnTLgyVy5ZA0iOX9T4s9y5XtWXH1Xx8y2rd+NbyKlaWxehK51s729bvkpJx5YQsf4jy9qqrqTy2i

QJ+yOkdV8idDjjnHSpYQEP0t1dLP1NTt1Z4ubIrLm37zanSKmN4dwB+HgDoRwCFAe2O6Hy2Bh5I+YesPZHLjjDG459taj24ALvSkC+4KFk2kK8OAHADlCgJXzMwWEOkDKDAZEQKwBgIQAQAUALYB7meTZjGCiexPzICAANV3yDCRw+gOUIG3HksvQ7EnqT3FF9CyfBP08ky3PfyCSeRAan2TyMCZEciVP+nmT2kHk/8vKzen6TycNk+Wfqzl7yAK

p/M8yR1bbUGzwZ7SCz473mbTz655GA8K1HZ0fz3Z7SCBfb+TOSN8UBc9hf9AN2V/lo5i9me4vzHrOQOtcGhePZsnhoICOzmgiJPJEAkNKCScuJvFqEAwjlWwhy0ePRX8kPgBaAKvng2uHaGCBjVAhRyPHowGwAMCsez4BANjFiDNZ0u7KMKZcll/U9pAJ8gybClyJSgSfOQJAM61hiKo4ZhPCFiABbHJAkxlUJIBIHt728jAPBOIRjMoBjAMgbMD

QAcFd6u9HeDqO3LLw55mOD66waQr8IEDMDCBmAohNb8t/Sxr1OkjGBMDhm1nVd8cI7veNB8k9EAyuUP/HBx88cDFhAUAHRZorYzje7AJKBANgCyAyh8ccAE6mwFmi5f/lwQEMuAEPykxemUXf/PRCAA=
```

</details>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://krjaeh0.gitbook.io/j-log/security/ctf-and-wargame/ctf-writeups/ctf_account_1.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
