\u719f\u6089\u7684\u914d\u65b9\uff0c\u719f\u6089\u7684\u5473\u9053<\/h3>\n\n\n\n \u4ee5\u4e3a\u662fssti\uff0c\u8bd5\u4e86\u4e00\u4e0b{}\u88abban\u4e86\uff0c\u7136\u540e\u8bbf\u95ee\u4e00\u4e0b\u8def\u7531\uff0c\u53d1\u73b0\u6709\u62a5\u9519\u56de\u663e\uff0c\u5c1d\u8bd5\u6253404\u5185\u5b58\u9a6c\u3002exp\u5982\u4e0b:<\/p>\n\n\n\n
import requestsTGCTF{1e254da2-538e-7c9a-f0ab-206d3255eb47}<\/p>\n\n\n\n
AAA\u5077\u6e21\u9634\u5e73\uff08\u590d\u4ec7\uff09<\/h3>\n\n\n\n ban\u4e86\u65e0\u53c2\uff0c\u67e5\u4e86\u8d44\u6599\uff0c\u8fd8\u6709\u7528session\u6765\u6253\uff0c\u7528\u5341\u516d\u8fdb\u5236\u4f20\u5165\u8fdb\u884crce<\/p>\n\n\n\nRe<\/h2>\n\n\n\nbase64<\/h3>\n\n\n\n \u7a0b\u5e8f\u4f7f\u7528\u81ea\u5b9a\u4e49Base64\u7f16\u7801\u8868\u5bf9\u8f93\u5165\u8fdb\u884c\u7f16\u7801\u3002\u76ee\u6807\u5b57\u7b26\u4e32AwLdOEVEhIWtajB2CbCWCbTRVsFFC8hirfiXC9gWH9HQayCJVbB8CIF=<\/code>\u9700\u4f7f\u7528\u8be5\u8868\u89e3\u7801\u3002\u7f16\u7801\u8868\u4e3aGLp\/+Wn7uqX8FQ2JDR1c0M6U53sjBwyxglmrCVdSThAfEOvPHaYZNzo4ktK9iebI<\/code>\uff0c\u4e14\u7f16\u7801\u65f6\u6bcf\u4e2a6\u4f4d\u7d22\u5f15\u7ecf\u8fc7(index + 24) % 64<\/code>\u8f6c\u6362<\/p>\n\n\n\nexp<\/p>\n\n\n\n
custom_table = \"GLp\/+Wn7uqX8FQ2JDR1c0M6U53sjBwyxglmrCVdSThAfEOvPHaYZNzo4ktK9iebI\"HZNUCTF{ad162c-2d94-434d-9222-b65dc76a32}<\/p>\n\n\n\n
\u86c7\u5e74\u7684\u672c\u547d\u8bed\u8a00<\/h3>\n\n\n\n \u5148\u7528\u547d\u4ee4python pyinstxtractor.py output.exe \u89e3\u5305\u5f97\u5230pyc\u6587\u4ef6\u7136\u540e\u53cd\u7f16\u8bd1<\/p>\n\n\n\n\u7136\u540e\u2f64ai\u68ad\uff0c\u5148z3\u6c42\u89e3\u7ebf\u6027\u2f45\u7a0b\u5f97\u5230\u5bf9\u5e94\u7684ascii\u7801<\/p>\n\n\n\n
from z3 import *\u7136\u540e\u518d\u9006\u5411\u7406\u89e3\u524d\u2faf\u7684\u8fc7\u7a0b\uff0c\u4e3b\u8981\u5224\u65ad\u6761\u4ef6\u4e3a<\/p>\n\n\n\n
if O0o00 != '111111116257645365477364777645752361':<\/pre>\n\n\n\n\u7136\u540e\u518d\u5bf9\u5e94\u5206\u914d\u4f4d\u7f6e HZNUCTF{ad7fa-76a7-ff6a-fffa-7f7d6a}<\/p>\n\n\n\n
\u6c34\u679c\u5fcd\u8005<\/h3>\n\n\n\n \u5229\u7528dnspy\u53cd\u7f16\u8bd1\u6587\u4ef6\uff0c\u627e\u5230game\/assets\/bin\/data\/Managed\/Assembly-CSarp.dll\u8fd9\u4e2a dll \u6587\u4ef6<\/p>\n\n\n\n \u5728gamemanager\u91cc\u9762\u627e\u5230\u4e86\u52a0\u5bc6\u51fd\u6570\u548c\u5bc6\u6587\u5bc6\u94a5<\/p>\n\n\n\n\u5728\u7ebf\u5de5\u5177\u89e3\u5bc6<\/p>\n\n\n\nXTEA<\/h3>\n\n\n\n \u7ed9\u4e86\u4e00\u4e2a\u538b\u7f29\u5305\u5bc6\u7801\uff0c\u5c06\u5b83\u5341\u516d\u8fdb\u5236\u4e4b\u540e\u4f5c\u4e3a\u8fed\u4ee3\u5e38\u91cf0x9E3779B9<\/p>\n\n\n\n
TEA\u7b97\u6cd5<\/p>\n\n\n\n
import structCrypto<\/h2>\n\n\n\n\u8d39\u514b\u7279\u5c14<\/h3>\n\n\n\n \u5148\u7528Factordb\u5206\u89e3n<\/p>\n\n\n\nexp<\/p>\n\n\n\n
from sympy import mod_inverse\u89e3\u5bc6\u5f97\u5230\u7684\u660e\u6587\uff1a TGCTF{f4888_6abdc_9c2bd_9036bb}<\/p>\n\n\n\n
\u5b9d\u5b9drsa<\/h3>\n\n\n\n PART1<\/strong> \u4f7f\u7528\u4e24\u4e2a 512 \u4f4d\u7d20\u6570\u751f\u6210\u7684\u6a21\u6570 n\u2081\uff0c\u5e76\u201c\u968f\u673a\u201d\u9009\u53d6\u4e00\u4e2a\u8f83\u5c0f\u7684\u516c\u94a5\u6307\u6570 e\u2081\uff08\u4f4d\u6570\u4e3a 17 \u6216 18 \u4f4d\uff09\uff0c \u52a0\u5bc6\u4e86 flag \u7684\u524d\u534a\u90e8\u5206\u3002\u9898\u76ee\u53ea\u516c\u5f00\u4e86 p\u2081\u3001q\u2081 \u4e0e\u5bc6\u6587 c\u2081\uff0c\u672a\u7ed9\u51fa e\u2081\u3002 \u7531\u4e8e e\u2081 \u7684\u8303\u56f4\u8f83\u5c0f\uff08\u7ea6\u5728 2\u00b9\u2077\uff5e2\u00b9\u2078 \u533a\u95f4\u5185\uff09\uff0c\u6211\u4eec\u53ef\u4ee5\u904d\u5386\u8be5\u8303\u56f4\u5185\u6240\u6709\u7d20\u6570\u5019\u9009\u503c\uff0c\u5bf9\u6bcf\u4e2a\u5019\u9009 e\u2081 \u68c0\u67e5\uff1a<\/p>\n\n\n\n\n\u662f\u5426\u4e0e \u03c6(n\u2081) \u4e92\u8d28<\/li>\n\n\n\n \u7528\u5019\u9009\u7684 e\u2081 \u6062\u590d\u51fa\u79c1\u94a5 d\u2081\uff0c\u7136\u540e\u5bf9 c\u2081 \u89e3\u5bc6\u5f97\u5230 m\u2081<\/li>\n\n\n\n \u5982\u679c\u89e3\u5bc6\u7ed3\u679c\u8f6c\u6210\u5b57\u8282\u4e32\u540e\u7b26\u5408\u6211\u4eec\u5bf9 flag\uff08\u4f8b\u5982\u4ee5 flag{<\/code> \u5f00\u5934\u7b49\uff09\u7684\u9884\u671f\uff0c\u5219\u8ba4\u5b9a\u5019\u9009\u6b63\u786e<\/li>\n<\/ul>\n\n\n\nPART2<\/strong> \u4f7f\u7528\u4e24\u4e2a 512 \u4f4d\u7d20\u6570\u751f\u6210\u7684\u6a21\u6570 n\u2082\uff0c\u5e76\u56fa\u5b9a\u516c\u94a5\u6307\u6570 e\u2082 = 3 \u5bf9 flag \u7684\u540e\u534a\u90e8\u5206\u8fdb\u884c\u52a0\u5bc6\u3002 \u82e5 m\u2082 \u8f83\u5c0f\uff08\u65e0\u9700\u6a21 n\u2082 \u7684\u5f52\u7ea6\uff09\uff0c\u5219\u6709<\/p>\n\n\n\nc2=m23c\u2082 = m\u2082^3c2=m23<\/p>\n\n\n\n
\u8fd9\u65f6\u53ef\u5229\u7528\u6574\u6570\u7acb\u65b9\u6839\u76f4\u63a5\u6062\u590d m\u2082\u3002<\/p>\n\n\n\n
from math import gcdAAAAAAAA\u00b7\u771f\u00b7\u7b7e\u5230<\/h3>\n\n\n\n \u4e00\u773c\u51ef\u6492\uff0c\u7b2c\u4e00\u4e2a\u6570\u5b5725\uff0c\u540e\u9762\u6bcf\u4e00\u4f4d\u9012\u589e1<\/p>\n\n\n\ndef caesar_cipher_decrypt(ciphertext, start_offset):\u5b57\u6bcd\u5bf9\u4e0d\u4e0a\uff0c\u8bf4\u660e\u6570\u5b57\u5bf9\u7684<\/p>\n\n\n\n\u7ed9\u6570\u5b57\u6539\u56de\u53bb\u5c31\u884c TGCTF{WO0O!Y04_5R3_GOOD_AT_MOVE}<\/p>\n\n\n\n
mm\u4e0d\u8eb2\u732b\u732b<\/h3>\n\n\n\n \u516c\u56e0\u5b50\u6f0f\u6d1e<\/strong> \u5f53\u591a\u4e2a RSA \u6a21\u6570 n\u2081, n\u2082, \u2026 \u51fa\u73b0\u5171\u7528\u67d0\u4e2a\u7d20\u6570\uff08\u5047\u8bbe p\uff09\u65f6\uff0c\u5982\u679c\u6709 \u2003gcd(n\u1d62, n\u2c7c) = p \uff08p > 1\uff09 \u5219\u53ef\u4ee5\u5229\u7528\u8fd9\u4e00\u5171\u56e0\u5b50\u5c06\u4e24\u4e2a\u6a21\u6570\u5404\u81ea\u5206\u89e3\u4e3a \u2003n\u1d62 = p \u00b7 q\u1d62\u2003\u2003\u2003n\u2c7c = p \u00b7 q\u2c7c \u4e00\u65e6\u77e5\u9053\u4e86 p \u4e0e\u5176\u4e2d\u4e00\u4e2a n \u7684\u53e6\u4e00\u4e2a\u56e0\u5b50 q\uff0c\u5373\u53ef\u8ba1\u7b97 Euler \u51fd\u6570 \u2003\u03c6(n) = (p \u2013 1)(q \u2013 1) \u4e4b\u540e\u5229\u7528 e \u6c42\u51fa\u79c1\u94a5 d\uff08\u6ee1\u8db3 d \u00b7 e \u2261 1 mod \u03c6(n)\uff09\uff0c\u7ee7\u800c\u89e3\u5bc6\u5bc6\u6587\u3002<\/p>\n\n\n\n\u6279\u91cf\u6c42 gcd<\/strong> \u7531\u4e8e\u9898\u76ee\u7ed9\u51fa 307 \u7ec4 (n, c)\uff0c\u5e38\u7528\u624b\u6cd5\u662f\u5bf9\u6240\u6709\u6a21\u6570\u8fdb\u884c\u4e24\u4e24\u6c42 gcd\uff08\u5373\u904d\u5386\u6240\u6709 (n\u1d62, n\u2c7c) \u5bf9\uff09\uff0c\u627e\u51fa\u90a3\u4e9b gcd > 1 \u7684\u60c5\u51b5\u3002\u8fd9\u6837\u53ef\u4ee5\u5c06\u5927\u90e8\u5206\u5b58\u5728\u95ee\u9898\u7684\u6a21\u6570\u5206\u89e3\u51fa\u6765\u3002<\/p>\n\n\n\n\u6062\u590d\u79c1\u94a5\u5e76\u89e3\u5bc6<\/strong> \u5bf9\u4e8e\u6bcf\u4e2a\u88ab\u6210\u529f\u5206\u89e3\u7684\u6a21\u6570 n\uff0c\u53ef\u4ee5\u6c42\u51fa\uff1a \u2003p = gcd(n\u1d62, n\u2c7c) \u2003q = n\u1d62 \/ p \u5f97\u5230 \u03c6(n\u1d62) \u540e\u518d\u8ba1\u7b97\u79c1\u94a5 d\uff0c\u6700\u540e\u5229\u7528\u5feb\u901f\u5e42\u7b97\u6cd5\u89e3\u5bc6 \u2003m \u2261 c^d mod n \u4ece m \u4e2d\u8f6c\u6362\u51fa\u660e\u6587\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\nexp:<\/p>\n\n\n\n
import mathtRwSiAns<\/h3>\n\n\n\n \u8981\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u6211\u4eec\u5229\u7528Franklin-Reiter\u76f8\u5173\u6d88\u606f\u653b\u51fb\uff0c\u56e0\u4e3a\u4e24\u4e2a\u5bc6\u6587\u5bf9\u5e94\u7684\u660e\u6587\u5b58\u5728\u5df2\u77e5\u5dee\u5f02\uff0c\u4e14RSA\u516c\u94a5\u6307\u6570e=3\u8f83\u4f4e\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u6b65\u9aa4\uff1a<\/p>\n\n\n\n
\u89e3\u9898\u6b65\u9aa4\uff1a<\/h6>\n\n\n\n\n\u8ba1\u7b97\u54c8\u5e0c\u503c<\/strong>\uff1a\u5206\u522b\u8ba1\u7b97x1=307\u548cx2=7\u7684MD5\u54c8\u5e0c\u503c\uff0c\u8f6c\u6362\u4e3a\u6574\u6570h1\u548ch2\u3002<\/li>\n\n\n\n\u786e\u5b9a\u5dee\u5f02<\/strong>\uff1a\u8ba1\u7b97\u5dee\u5f02delta = h1 - h2\u3002<\/li>\n\n\n\n\u6784\u9020\u591a\u9879\u5f0f<\/strong>\uff1a\u5728\u6a21n\u7684\u591a\u9879\u5f0f\u73af\u4e2d\uff0c\u6784\u9020\u4e24\u4e2a\u591a\u9879\u5f0ff(x) = x\u00b3 - c1\u548cg(x) = (x - delta)\u00b3 - c2\u3002<\/li>\n\n\n\n\u8ba1\u7b97GCD<\/strong>\uff1a\u627e\u5230\u8fd9\u4e24\u4e2a\u591a\u9879\u5f0f\u7684\u6700\u5927\u516c\u7ea6\u6570(GCD)\uff0c\u5176\u6839\u5373\u4e3a\u660e\u6587m1 = m + h1\u3002<\/li>\n\n\n\n\u6062\u590d\u660e\u6587<\/strong>\uff1a\u4ecem1\u4e2d\u51cf\u53bbh1\u5f97\u5230\u539f\u59cb\u6d88\u606fm\uff0c\u5c06\u5176\u8f6c\u6362\u4e3a\u5b57\u8282\u5373\u53ef\u83b7\u5f97flag\u3002<\/li>\n<\/ol>\n\n\n\nimport hashlibPwn<\/h2>\n\n\n\noverflow<\/strong><\/h3>\n\n\n\n\u9759\u6001\u7f16\u8bd1,32\u4f4d,\u6ca1\u6709\u5f00pie,\u6ca1\u4ec0\u4e48\u597d\u8bf4\u7684,\u76f4\u63a5\u6253ret2syscall<\/p>\n\n\n\n
from pwn import *shellcode \u5bc4\u5b58\u5668\u90fd\u6e05\u695a\u4e86,\u4f46\u662frdi\u8fd8\u6709\u6570\u636e,\u8003\u8651\u6062\u590d\u8bfb\u5199\u6743\u9650\u7136\u540e\u5199\u5165shellcode<\/p>\n\n\n\n
from pwn import *stack<\/h3>\n\n\n\n \u7a0b\u5e8f\u4f2a\u9020\u4e86\u4e00\u4e0b\u5f71\u5b50\u6808\u7684\u8c03\u7528\u6d41\u7a0b,\u4f46\u662f\u5982\u679c\u8bfb\u5165\u8d85\u51fa\u7684\u8bdd,\u4f1a\u8fdb\u5165\u5230\u4e00\u4e2a\u51fd\u6570,\u5c31\u53ef\u4ee5\u6253ret2syscall<\/p>\n\n\n\n
from pwn import *\u7b7e\u5230<\/h3>\n\n\n\n \u6ca1\u4ec0\u4e48\u53ef\u8bf4\u7684,\u57fa\u7840\u7684ret2libc<\/p>\n\n\n\n
from pwn import *fmt<\/h3>\n\n\n\n \u6ca1\u5f00pie,\u5b58\u5728\u4e00\u6b21\u683c\u5f0f\u5316\u5b57\u7b26\u4e32,\u5e76\u4e14\u76f4\u63a5\u7ed9\u4e86\u6808\u7684\u5730\u5740,\u6211\u8fd9\u91cc\u76f4\u63a5\u7206\u7834\u6808\u4e86(1\/4096\u7684\u6982\u7387),\u4f46\u662f\u5e94\u8be5\u53ef\u4ee5\u6808\u8fc1\u79fb\u628arbp\u79fb\u52a8\u5230\u4e0emagic\u53d8\u91cf\u53c8\u4e00\u5b9a\u504f\u79fb\u7684\u4f4d\u7f6e,\u7136\u540e\u5c31\u80fd\u6539magic\u53d8\u91cf\u4e86,\u5c31\u80fd\u591a\u6b21\u683c\u5f0f\u5316\u5b57\u7b26\u4e32(\u5f53\u7136\u6211\u6ca1\u8fd9\u6837\u6253)<\/p>\n\n\n\nfrom pwn import *heap<\/h3>\n\n\n\n 2.23\u7684\u5806,\u6ca1\u6709\u5f00\u542fpie,\u4f46\u662f\u65e0\u6cd5\u7533\u8bf7\u80fd\u591f\u8fdb\u5165unsorted bin\u7684\u5806\u5757,\u660e\u663e\u7684double free\u6f0f\u6d1e,\u4f46\u662f\u7a0b\u5e8f\u4e2d\u7ed9\u4e86\u4e00\u6bb5\u53ef\u4ee5\u4efb\u610f\u5199\u7684\u5185\u5b58,\u5730\u5740\u5df2\u77e5,\u5229\u7528fast bin attack\u5c06\u5176\u5f53\u4f5c\u5806,\u5e76\u518d\u6b21\u4f2a\u9020\u5927\u5c0f\u6ee1\u8db3unsorted\u7684\u6761\u4ef6,\u5c31\u6709\u57fa\u5730\u5740\u4e86,\u7136\u540e\u5229\u7528fast bin attack(\u5fd8\u4e86\u54ea\u4e2ahouse\u4e86)\u52ab\u6301malloc hook\u653e\u5165ogg,(\u8fd9\u8fb9\u5229\u7528realloc\u8c03\u6808\u4e86)<\/p>\n\n\n\n
from pwn import *noret<\/h3>\n\n\n\n \u6808\u6ea2\u51fa,\u4f46\u662f\u6ca1\u6709libc,\u7a0b\u5e8f\u91cc\u9762\u6709\u4e00\u4e0b\u540e\u95e8gadget<\/p>\n\n\n\n\u5229\u7528\u6808\u8fc1\u79fb,\u6253srop<\/p>\n\n\n\n
from pwn import *onlygets<\/h3>\n\n\n\n \u9006\u5411\u540e\u53d1\u73b0\u53ea\u6709gets<\/p>\n\n\n\ngot\u8868\u4e0d\u53ef\u5199<\/p>\n\n\n\n
\u6211\u8fd9\u4e2a\u601d\u8def\u7b97\u662f\u975e\u9884\u671f\u4e86,\u4f46\u662f\u6211\u8ba4\u4e3a\u5bcc\u6709\u4e00\u5b9a\u542f\u53d1\u6027,\u6211\u8fd9\u8fb9\u5148\u5927\u6982\u63cf\u8ff0\u4e00\u4e0b\u8fd9\u4e2a\u8fc7\u7a0b,\u518d\u7ed3\u5408exp\u4ed4\u7ec6\u5206\u6790(\u6709\u4ec0\u4e48\u4e0d\u7406\u89e3\u7684\u6b22\u8fce\u6765gank\u6211)<\/del>(\u6ce8\u610f\u9700\u8981\u4f7f\u7528\u4e0e\u8fdc\u7a0b\u73af\u5883\u76f8\u540c\u7684libc, \u7248\u672c\u5927\u6982\u662f2.35)<\/p>\n\n\n\n\u4e3a\u4e86\u4ecb\u7ecd\u65b9\u4fbf \u6211\u8fd9\u91cc\u5173\u95ed\u4e86aslr<\/p>\n\n\n\n
\u7b80\u8981\u601d\u8def<\/h4>\n\n\n\n\u8c03\u8bd5\u65f6\u53d1\u73b0(\u5728\u6267\u884cgets\u524d),\u6808\u4e0a\u6709\u4e00\u4e9blibc\u7684\u5730\u5740,\u6ca1\u6709\u529e\u6cd5\u8f93\u51fa\u53ef\u4ee5\u60f3\u529e\u6cd5\u628a\u6808\u4e0a\u7684\u8fd9\u4e9b\u6570\u636e\u653e\u5230\u5bc4\u5b58\u5668\u91cc\u8fdb\u884c\u4e00\u4e9b\u64cd\u4f5c,\u4f46\u662f\u56e0\u4e3a\u6808\u7684\u5730\u5740\u4e0d\u53ef\u77e5,\u5148\u8fdb\u884c\u884c\u6808\u8fc1\u79fb\u5230\u5df2\u77e5\u7684\u5730\u65b9<\/p>\n\n\n\n
\u6ce8\u610f__libc_start_main+128<\/p>\n\n\n\n\u5982\u679c\u6211\u4eec\u80fd\u591f\u52ab\u6301rtld_global,\u90a3\u4e48\u5c31\u80fd\u591f\u5229\u7528 add rcx, [r14]<\/code>,\u6211\u4eec\u5229\u7528mov rcx,[rcx+8]<\/code>\u5c06rcx\u5185\u5bb9\u53d8\u6210libc\u7684\u4e00\u4e9b\u51fd\u6570\u7684\u5730\u5740,\u63a7\u5236\u5176\u4e2d[r14]\u7684\u5185\u5bb9,\u5f53\u4f5c\u504f\u79fb,\u6211\u4eec\u5c31\u80fd\u591f\u6267\u884clibc\u5185\u90e8\u7684\u51fd\u6570\u4e86\u4f8b\u5982 ogg<\/p>\n\n\n\n\u90a3\u4e48\u5982\u4f55\u6267\u884c__libc_start_main + 128\u5462<\/p>\n\n\n\n
\u6ce8\u610f\u5230\u5728csu\u4e2d<\/p>\n\n\n\n\u4f1a\u6267\u884c[r12 + rbx * 8]<\/code>, \u90a3\u6211\u4eec\u8ba9\u8fd9\u4e2a\u5730\u65b9\u7b49\u4e8e\u6808\u4e0a\u7684\u5730\u5740(\u8fc1\u79fb\u540e),\u90a3\u81ea\u7136\u5229\u7528\u6808\u4e0a\u6b8b\u4f59\u7684__libc_start_main + 128\u5730\u5740\u5c31\u53ef\u4ee5\u76f4\u63a5\u6267\u884c\u4e86<\/p>\n\n\n\n\u90a3\u4e48\u5982\u4f55\u52ab\u6301rtld_global\u5462<\/p>\n\n\n\n
\u601d\u8def\u4e5f\u597d\u8bf4,\u5982\u679c\u6211\u4eec\u6784\u9020\u4e00\u4e0b\u6808\u7684\u5185\u5bb9,\u8ba9pop rdi<\/code>\u65f6\u8ba9rdi\u7b49\u4e8ertld_global,\u7136\u540e\u60f3\u529e\u6cd5\u8c03\u7528gets\u51fd\u6570\u5c31\u53ef\u4ee5\u4e86<\/p>\n\n\n\n\u5f53\u7136\u8fd9\u91cc\u503c\u5f97\u6ce8\u610f\u7684\u7ec6\u8282\u8fd8\u662f\u633a\u591a\u7684,\u7ec6\u8282\u6211\u4eec\u63a5\u4e0b\u6765\u6162\u6162\u8bb2<\/p>\n\n\n\n
\u4ed4\u7ec6\u5206\u6790<\/h4>\n\n\n\n \u7531\u4e8e\u6211\u5199\u7684exp\u5bf9\u540c\u4e00\u5757\u5185\u5b58\u8fdb\u884c\u4e86\u53cd\u590d\u64cd\u4f5c,\u5982\u679c\u9700\u8981\u590d\u73b0\u662f\u9700\u8981\u53cd\u590d\u8c03\u8bd5\u7684,\u5e76\u4e14\u6ce8\u610frbp\u548crsp\u7684\u4f4d\u7f6e,\u5982\u679crbp\u7684\u4f4d\u7f6e\u9ad8\u4e8ersp,\u800c\u4e14\u76f8\u5dee\u5f88\u8fd1\u5728\u8fd0\u884c\u4e00\u4e9b\u51fd\u6570\u7684\u65f6\u5019\u4f1a\u53d1\u751f\u4e00\u4e9b\u9519\u8bef<\/strong>.\u8fd9\u70b9\u5f88\u91cd\u8981.<\/p>\n\n\n\n\u8fd9\u8fb9\u6211\u5c06exp\u5206\u6210\u51e0\u5757,(\u8fde\u8d77\u6765\u5c31\u80fd\u76f4\u63a5\u7528)\u5f53\u7136\u540e\u9762\u4f1a\u653e\u603b\u7684exp<\/p>\n\n\n\n
\u9884\u5904\u7406\u4e00\u4e9b\u5185\u5bb9<\/p>\n\n\n\n
from pwn import *\u9996\u5148\u6211\u4eec\u9700\u8981\u628a\u6808\u8fc1\u79fb,\u8fc1\u79fb\u6808\u80af\u5b9a\u662f\u8fc1\u79fb\u5230bss(\u4e00\u5757\u53ef\u8bfb\u5199\u7684\u533a\u57df),\u4f46\u662f\u8fd9\u4e2a\u6837\u5b50bss\u6bb5\u4e0a\u5c31\u6ca1\u6709\u53ef\u4ee5\u5229\u7528\u7684libc\u57fa\u5730\u5740(\u5168\u4e3a0),\u5982\u4f55\u5904\u7406\u5462<\/p>\n\n\n\n
payload = b'a' * 0x10 + p64(bss) + p64(0x4005E5)\u5148\u628arbp\u8fc1\u79fb\u4e00\u4e0b,\u7136\u540e\u8fd4\u56de\u5230<\/p>\n\n\n\n
.text:00000000004005E5 48 8D 45 F0 lea rax, [rbp+var_10]\u7136\u540e\u63a5\u4e0b\u6765\u91cd\u70b9\u6765\u4e86<\/p>\n\n\n\n
payload = b'a' * 0x10 + p64(bss) + p64(0x400480)\u6211\u4eec\u8fd4\u56de0x400480\u7684\u5730\u5740,\u8fd9\u4e2a\u5730\u5740\u662fstart\u51fd\u6570\u7684\u8d77\u59cb\u5730\u5740,\u4ed6\u4f1a\u9884\u5904\u7406\u4e00\u4e9b\u4fe1\u606f\u7136\u540e\u8fdb\u5165main\u51fd\u6570,\u6b64\u65f6\u6808\u4e0a\u5c31\u5e03\u4e0a\u6211\u4eec\u60f3\u8981\u7684\u5185\u5bb9<\/p>\n\n\n\n
\u5728main\u51fd\u6570\u5f00\u59cb\u65f6,\u6808\u7684\u5185\u5bb9<\/p>\n\n\n\n\u56e0\u4e3a\u6211\u4eec\u53ef\u4ee5\u52ab\u6301\u7a0b\u5e8f\u6d41,\u800c\u4e14\u53ef\u4ee5\u4f7f\u7528pop rdi<\/code>,\u4f46\u662f\u5982\u679c\u6211\u4eec\u8fd9\u65f6\u76f4\u63a5\u8986\u76d6\u4e00\u4e9b\u5185\u5bb9\u4e3aret,\u57280x6014a0\u5904\u9644\u4e0apop rdi\u7684\u5730\u5740,\u5982\u679c\u6211\u4eec\u60f3\u8981\u7a0b\u5e8f\u8fd4\u56degets\u51fd\u6570,\u5c31\u9700\u8981\u6539\u53d80x6014b0\u7684\u5185\u5bb9,\u5982\u679c\u76f4\u63a5\u8986\u76d6\u4f1a\u628artld_global\u8986\u76d6\u6389\u5c31\u6ca1\u6709\u529e\u6cd5\u4f7f\u7528\u4e86,\u6240\u4ee5\u53ef\u884c\u7684\u529e\u6cd5\u5c31\u662f\u5148\u628arbp\u653e\u57280x6014c0\u5904,\u8fdb\u884cgets,\u8fd9\u6837\u5c31\u80fd\u5148\u628artld_global\u4e0b\u9762\u7684\u5730\u65b9\u6539\u6210\u6211\u4eec\u60f3\u8981\u9884\u671f\u7684gets\u51fd\u6570<\/p>\n\n\n\nsleep(1)\u6b64\u65f6\u89c2\u5bdf\u5230<\/p>\n\n\n\n\u4e0b\u9762\u5df2\u7ecf\u662fcall gets\u51fd\u6570\u4e86,\u6b64\u65f6\u6211\u4eec\u8ba9rbp\u56de\u6765,\u6784\u9020\u94fe\u5b50<\/p>\n\n\n\n
sleep(1)\u8fd9\u8fb9p64(rdi)[:7]\u662f\u4e3a\u4e86\u9632\u6b62gets\u622a\u65ad\u628artld_global\u7ed9\u6539\u4e86,\u662f\u8fd9\u4e2a\u6837\u5b50\u7684(\u8fd9\u4e2a\u65f6\u5019\u6808\u5df2\u7ecf\u88ab\u590d\u5199\u7684\u4e0d\u662f\u4ec0\u4e48\u6837\u5b50\u4e86,\u6211\u5f88\u96be\u8bb2\u6e05\u695a\u4e3a\u4ec0\u4e48\u8981\u628arbp leave\u5230\u4e00\u4e9b\u5730\u5740,\u6709\u4ec0\u4e48\u7591\u95ee\u53ef\u4ee5\u591a\u601d\u8003\u591a\u52a8\u8c03\u770b\u770b\u5427)<\/p>\n\n\n\ncall gets\u65f6\u7684\u5bc4\u5b58\u5668\u6837\u5b50\u548c\u6808\u7684\u6837\u5b50\u5982\u56fe<\/p>\n\n\n\n\u8fd9\u4e2a\u65f6\u5019\u53ef\u80fd\u4f60\u5f88\u7591\u60d1,\u6267\u884c\u5b8cgets\u4e4b\u540e\u8981\u600e\u4e48\u786e\u4fdd\u8fd4\u56de\u5730\u5740(gets\u6267\u884c\u540e\u5c31\u660e\u767d\u4e86)<\/p>\n\n\n\n
sleep(1)gets\u8bfb\u5165\u7684\u5185\u5bb9,\u8fd9\u8fb9\u662f\u5bf9rtld_global\u7684\u5185\u5bb9\u8fdb\u884c\u4fee\u6539,\u8fd9\u4e2a\u5730\u5740\u662f\u7a0d\u540e\u9700\u8981\u4f2a\u9020\u7684\u5730\u5740<\/p>\n\n\n\n\u53ef\u89c1gets\u6267\u884c\u5b8c\u662f\u8fd9\u4e2a\u6837\u5b50\u7684(\u662f\u4e0d\u662f\u5f88\u5947\u602a,\u6211\u53cd\u590d\u52a8\u8c03\u51fa\u6765\u7684\u4e00\u4e2a\u5730\u5740,\u6b64\u65f6\u6808\u5df2\u7ecf\u5f88\u6df7\u4e71\u4e86,\u6211\u4e5f\u4e0d\u597d\u76f4\u63a5\u5206\u6790\u4e86),\u8fd9\u4e2a\u548crbp\u5728rsp\u4e0a\u9762\u6709\u4e00\u5b9a\u7684\u5173\u7cfb,\u4ed6\u4f1apush\u4e00\u4e9b\u5bc4\u5b58\u5668,\u521a\u597d\u6709\u4e00\u4e2a\u5bc4\u5b58\u5668\u5b58\u7740\u4e00\u4e2a\u5730\u5740,\u7136\u540epush\u8fdb\u53bb\u4e86,(\u6211\u5199\u7684\u592a\u4e71\u4e86,\u5e0c\u671b\u6709\u5e08\u5085\u80fd\u6709\u66f4\u7b80\u5355\u660e\u4e86\u7684\u6784\u9020\u6808\u7684\u65b9\u6cd5,\u6bd4\u5982\u8bf4\u4e0d\u8981\u91cd\u590d\u7684\u590d\u7528,\u6bcf\u6b21\u90fd\u8bbe\u7f6e\u4e00\u4e2a\u65b0\u7684\u5185\u5b58\u5757\u4e4b\u7c7b\u7684,\u6574\u4e2a\u94fe\u8c03\u7528\u7684\u8fc7\u7a0b\u662f\u5f88\u4e0d\u9519\u7684,\u4f46\u662f\u6808\u7684\u5185\u5bb9\u5c31\u9700\u8981\u4e0d\u65ad\u52a8\u8c03\u4e86)<\/p>\n\n\n\n\u53ef\u4ee5\u770b\u5230\u6210\u529f\u6539\u5199\u4e86\u8fd9\u4e2a\u7684\u5185\u5bb9<\/p>\n\n\n\n
\u63a5\u4e0b\u6765\u5c31\u53ef\u4ee5\u4f2a\u9020\u8fd9\u4e2a\u5730\u5740\u7684\u5185\u5bb9,\u7136\u540e\u6267\u884c__libc_start_main + 128\u4e86<\/p>\n\n\n\n
sleep(1)\u8fd9\u8fb9\u6211\u53c8\u628arop\u94fe\u5b50\u548c\u4f2a\u9020\u7684\u5185\u5bb9\u878d\u5408\u5230\u4e00\u8d77\u4e86(\u6211\u77e5\u9053\u9519\u4e86,\u7ed5\u4e86\u6211\u5427)<\/del>\u4f46\u662f\u8fd9\u4e2a\u5730\u65b9\u590d\u7528\u5728\u4e00\u8d77\u7684\u8bdd\u8fd8\u662f\u5f88\u6e05\u6670\u4e86(\u4e0d\u7b97\u6df7\u4e71)<\/p>\n\n\n\np64(0x40065A) + p64(0) + p64(0x6010a0) + p64(0x6014f8) + p64(0) * 3 + p64(0x400649)<\/code>\u5c31\u662frop\u7684\u94fe\u5b50\u4e86,\u8fd9\u65f6\u53ef\u4ee5\u63a7\u5236rbp\u7684\u5185\u5bb9\u4ee5\u6b64\u6765\u6ee1\u8db3ogg\u7684\u4e00\u4e9b\u6761\u4ef6,p64(-293 - libc.sym[\"gets\"] + 0xebd3f)<\/code>\u662f\u6808\u4e0a\u6709\u4e00\u4e2a\u5730\u65b9\u8bb0\u5f55\u4e86gets + 293<\/code>\u7684\u5730\u5740,\u63a7\u5236rcx\u4e3agets + 293<\/code>,\u7136\u540e\u5229\u7528add\u504f\u79fb\u6765\u53d8\u6210one_gadget<\/p>\n\n\n\n\u8c03\u8bd5\u770b\u4e00\u4e0b\u6548\u679c\u5427<\/p>\n\n\n\n\u63a7\u5236r12,\u4f7f\u5176\u80fd\u591f\u8fdb\u5165\u5230__libc_start_main+128,\u6b65\u5165\u8fdb\u53bb<\/p>\n\n\n\n\u5728\u8fdb\u884c\u524d\u4e09\u884c\u540e,rcx\u53d8\u6210\u4e86\u6808\u7684\u4e00\u4e2a\u5730\u5740<\/p>\n\n\n\n
\u6ce8\u610frcx<\/p>\n\n\n\n\u90a3\u4e48\u63a5\u4e0b\u6765mov rcx, qword ptr [rcx + 8]<\/code>\u65f6,rcx\u5c31\u662fgets+294\u7684\u503c\u4e86<\/p>\n\n\n\n\u8fd9\u8fb9[r14]\u6211\u4eec\u5df2\u7ecf\u63a7\u5236\u597d\u4e86,\u8fd0\u884c\u5230add\u6307\u4ee4\u65f6<\/p>\n\n\n\nrcx\u5c31\u53d8\u6210\u4e86ogg,call\u4e00\u4e0b\u76f4\u63a5\u62ff\u5230shell,\u8fd9\u8fb9\u9644\u4e0aexp<\/p>\n\n\n\n
from pwn import *\u961f\u4f0d\u540d Escape in the sun \u6392\u540d 10 \u611f\u8c22\u6bcf\u4e00\u4f4d\u961f\u53cb \u90fd\u5f88\u5f3a \u819c\u62dc\u67ef\u270c\ufe0f Misc next is the en …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"emotion":"","emotion_color":"","title_style":"","license":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-149","post","type-post","status-publish","format-standard","hentry","category-some-competition"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.hurkin.top\/index.php\/wp-json\/wp\/v2\/posts\/149","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hurkin.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hurkin.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hurkin.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hurkin.top\/index.php\/wp-json\/wp\/v2\/comments?post=149"}],"version-history":[{"count":3,"href":"https:\/\/www.hurkin.top\/index.php\/wp-json\/wp\/v2\/posts\/149\/revisions"}],"predecessor-version":[{"id":213,"href":"https:\/\/www.hurkin.top\/index.php\/wp-json\/wp\/v2\/posts\/149\/revisions\/213"}],"wp:attachment":[{"href":"https:\/\/www.hurkin.top\/index.php\/wp-json\/wp\/v2\/media?parent=149"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hurkin.top\/index.php\/wp-json\/wp\/v2\/categories?post=149"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hurkin.top\/index.php\/wp-json\/wp\/v2\/tags?post=149"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"\"](\"https:\/\/www.hurkin.top\/wp-content\/uploads\/2025\/04\/1744638511-e857e215e804bdc97fd02c703bf337c-1024x528.png\")
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<\/figure>\n\n\n\n![\"\"](\"https:\/\/www.hurkin.top\/wp-content\/uploads\/2025\/04\/1744638641-\u56fe\u7247-1024x435.png\")
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