diff --git a/README.md b/README.md index 56672ed..5e5f981 100644 --- a/README.md +++ b/README.md @@ -1,549 +1,354 @@ # hctf2015-all-problems -hctf2015 all problems and writeups from propositioners +hctf2015 all problems and writeups from authors # 全部题目地址 ## WEB题目 -题目名称:injection - -题目描述:咦,这咋是个白页 - -http://120.26.93.115:24317/0311d4a262979e312e1d4d2556581509/index.php - -分值:100 - -开题金币:100 - -奖励金币:200 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/injection +题目名称:injection +题目描述:咦,这咋是个白页 +http://120.26.93.115:24317/0311d4a262979e312e1d4d2556581509/index.php +分值:100 +开题金币:100 +奖励金币:200 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/injection` =================================================================== -题目名称:Personal blog - -题目描述:小学弟在大黑客的帮助下,搭建了自己的个人博客. - +题目名称:Personal blog +题目描述:小学弟在大黑客的帮助下,搭建了自己的个人博客. http://404.hack123.pw/ - -分值:100 - -开题金币:100 - -奖励金币:200 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/PersonalBlog +分值:100 +开题金币:100 +奖励金币:200 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/PersonalBlog` =================================================================== 题目名称:fuck === - -题目描述: - -http://120.26.93.115:18476/eff52083c4d43ad45cc8d6cd17ba13a1/index.php - -分值:75 - -开题金币:75 - -奖励金币:150 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/fuck%3D%3D%3D +题目描述: +http://120.26.93.115:18476/eff52083c4d43ad45cc8d6cd17ba13a1/index.php +分值:75 +开题金币:75 +奖励金币:150 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/fuck%3D%3D%3D` =================================================================== -题目名称:404 - -题目描述:咦,404了 - +题目名称:404 +题目描述:咦,404了 http://120.26.93.115:12340/3d9d48dc016f0417558ff26d82ec13cc/webI.php - -分值:25 - -开题金币:25 - -奖励金币:50 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/404 +分值:25 +开题金币:25 +奖励金币:50 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/404` =================================================================== -题目名称:Hack my net - -题目描述:就算你我相隔,我也要另辟蹊径 http://120.26.224.102:25045/ea57f09ea421245047b86eaba834fae1/ - -分值:100 - -开题金币:100 - -奖励金币:200 - -源码: +题目名称:Hack my net +题目描述:就算你我相隔,我也要另辟蹊径 http://120.26.224.102:25045/ea57f09ea421245047b86eaba834fae1/ +分值:100 +开题金币:100 +奖励金币:200 +源码: =================================================================== -题目名称:MMD - -题目描述:么么哒~ - -http://120.26.93.115:12306/05e8309820953e7620a1ee47441243b6/ - -分值:200 - -开题金币:200 - -奖励金币:200 - -源码: +题目名称:MMD +题目描述:么么哒~ +http://120.26.93.115:12306/05e8309820953e7620a1ee47441243b6/ +分值:200 +开题金币:200 +奖励金币:200 +源码: =================================================================== -题目名称:Server is done - -题目描述:搜索坏了,咋办。
- +题目名称:Server is done +题目描述:搜索坏了,咋办。
http://120.26.93.115:7659/8270537b1512009f6cc7834e3fd0087c/index.php - -分值:175 - -开题金币:175 - -奖励金币:200 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/server%20is%20done +分值:175 +开题金币:175 +奖励金币:200 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/server%20is%20done` =================================================================== -题目名称:Black eat black(300不足,200有余) - -题目描述:使用该DNS(180.153.47.182)后,你会被劫持哦~ - -分值:300 - -开题金币:300 - -奖励金币:400 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/Black-Eat-Black +题目名称:Black eat black(300不足,200有余) +题目描述:使用该DNS(180.153.47.182)后,你会被劫持哦~ +分值:300 +开题金币:300 +奖励金币:400 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/Black-Eat-Black` =================================================================== -题目名称:FuckPHP(出题人已经谢罪自杀) - -题目描述:哎,这题真的能做么? - -http://120.26.93.115:8123/92169de79037c2de72f5088bf1e8310a/index.php - -分值:300 - -开题金币:300 - -奖励金币:400 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/fuckphp +题目名称:FuckPHP(出题人已经谢罪自杀) +题目描述:哎,这题真的能做么? +http://120.26.93.115:8123/92169de79037c2de72f5088bf1e8310a/index.php +分值:300 +开题金币:300 +奖励金币:400 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/fuckphp` =================================================================== -题目名称:easy xss - -题目描述:你说我这里太短?看样子是你的太长 http://120.26.224.102:54250/0e7d4f3f7e0b6c0f4f6d1cd424732ec5/ - -分值:150 - -开题金币:150 - -奖励金币:200 - -源码: +题目名称:easy xss +题目描述:你说我这里太短?看样子是你的太长 +http://120.26.224.102:54250/0e7d4f3f7e0b6c0f4f6d1cd424732ec5/ +分值:150 +开题金币:150 +奖励金币:200 +源码: =================================================================== -题目名称:confused question - -题目描述:我快要晕了 http://120.26.224.102:23333/d20876f3f4d1c8358efcb9c0dde3781b/ - -分值:200 - -开题金币:200 - -奖励金币:200 - -源码: +题目名称:confused question +题目描述:我快要晕了 http://120.26.224.102:23333/d20876f3f4d1c8358efcb9c0dde3781b/ +分值:200 +开题金币:200 +奖励金币:200 +源码: =================================================================== -题目名称:长江防线固若金汤 - -题目描述:首长,我向您保证,长江防线固若金汤! - -http://120.55.112.244:23333/b60b1299c7a06e17c1ab1e9cde510e4a/index.html - -分值:275 - -开题金币:275 - -奖励金币:300 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/%E9%95%BF%E6%B1%9F%E9%98%B2%E7%BA%BF%E5%9B%BA%E8%8B%A5%E9%87%91%E6%B1%A4 +题目名称:长江防线固若金汤 +题目描述:首长,我向您保证,长江防线固若金汤! +http://120.55.112.244:23333/b60b1299c7a06e17c1ab1e9cde510e4a/index.html +分值:275 +开题金币:275 +奖励金币:300 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/%E9%95%BF%E6%B1%9F%E9%98%B2%E7%BA%BF%E5%9B%BA%E8%8B%A5%E9%87%91%E6%B1%A4` =================================================================== -题目名称:MC服务器租售中心 - 1(真的不是玩MC) - -题目描述:啦啦啦~卖服务器啦~ http://mc.hack123.pw - -分值:300 - -开题金币:300 - -奖励金币:400 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/MC%E6%9C%8D%E5%8A%A1%E5%99%A8%E7%A7%9F%E5%94%AE%E4%B8%AD%E5%BF%83 +题目名称:MC服务器租售中心 - 1(真的不是玩MC) +题目描述:啦啦啦~卖服务器啦~ http://mc.hack123.pw +分值:300 +开题金币:300 +奖励金币:400 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/MC%E6%9C%8D%E5%8A%A1%E5%99%A8%E7%A7%9F%E5%94%AE%E4%B8%AD%E5%BF%83` =================================================================== -题目名称:MC服务器租售中心 - 2(真的不是玩MC) - -题目描述:啦啦啦~卖服务器啦~ http://mc.hack123.pw - -分值:500 - -开题金币:500 - -奖励金币:300 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/MC%E6%9C%8D%E5%8A%A1%E5%99%A8%E7%A7%9F%E5%94%AE%E4%B8%AD%E5%BF%83 +题目名称:MC服务器租售中心 - 2(真的不是玩MC) +题目描述:啦啦啦~卖服务器啦~ http://mc.hack123.pw +分值:500 +开题金币:500 +奖励金币:300 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/MC%E6%9C%8D%E5%8A%A1%E5%99%A8%E7%A7%9F%E5%94%AE%E4%B8%AD%E5%BF%83` =================================================================== -题目名称:COMA WHITE - -题目描述:A PILL TO MAKE YOU NUMB - -A PILL TO MAKE YOU DUMB - -A PILL TO MAKE YOU ANYBODY ELSE - -BUT ALL THE DRUGS IN THIS WORLD - -WON'T SAVE HER FROM HERSELF - -http://120.26.93.115:43635/ff81b5df63ece38b45145ab41827d150/index.html - -分值:200 - -开题金币:200 - -奖励金币:200 - -源码: +题目名称:COMA WHITE +题目描述: +A PILL TO MAKE YOU NUMB +A PILL TO MAKE YOU DUMB +A PILL TO MAKE YOU ANYBODY ELSE +BUT ALL THE DRUGS IN THIS WORLD +WON'T SAVE HER FROM HERSELF +http://120.26.93.115:43635/ff81b5df63ece38b45145ab41827d150/index.html +分值:200 +开题金币:200 +奖励金币:200 +源码: =================================================================== ## RE题目 -题目名称:真的很友善的逆向题(福利) - -题目描述:友善的出题人在抢馄饨的时候有了新的灵感。 - -http://120.26.60.159/friendly/0.exe - -分值:150 - -开题金币:150 - -奖励金币:200 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/re150 +题目名称:真的很友善的逆向题(福利) +题目描述:友善的出题人在抢馄饨的时候有了新的灵感。 +http://120.26.60.159/friendly/0.exe +分值:150 +开题金币:150 +奖励金币:200 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/re150` =================================================================== -题目名称:来看看出题人疯了没 - -题目描述:在被各种CTF的题目蹂躏后,出题人已经彻底没救了(甜党万岁)。 - -http://120.26.60.159/mad/0.exe - -分值:450 - -开题金币:450 - -奖励金币:300 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/RE-HCTF\_450 +题目名称:来看看出题人疯了没 +题目描述:在被各种CTF的题目蹂躏后,出题人已经彻底没救了(甜党万岁)。 +http://120.26.60.159/mad/0.exe +分值:450 +开题金币:450 +奖励金币:300 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/RE-HCTF_450` =================================================================== -题目名称: 复古的程序 - -题目描述: 出题人比较怀旧,还停留在计算机的启蒙时代 - -http://120.26.60.159/re-8086/1000.exe - -分值: 250 - -开题金币: 250 - -奖励金币: 250 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/Re-x8086 +题目名称: 复古的程序 +题目描述: 出题人比较怀旧,还停留在计算机的启蒙时代 +http://120.26.60.159/re-8086/1000.exe +分值: 250 +开题金币: 250 +奖励金币: 250 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/Re-x8086` =================================================================== -题目名称: 欧洲人的游戏(你是欧洲人吗?) - -题目描述: 听说,欧洲人和有钱人可以很快做出来 - -http://120.26.60.159/re-crc/1000.exe - -分值: 250 - -开题金币: 250 - -奖励金币: 250 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/Re-crc +题目名称: 欧洲人的游戏(你是欧洲人吗?) +题目描述: 听说,欧洲人和有钱人可以很快做出来 +http://120.26.60.159/re-crc/1000.exe +分值: 250 +开题金币: 250 +奖励金币: 250 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/Re-crc` =================================================================== -题目名称: 混沌ROP - -题目描述: GeruzoniAnsasu给他的学弟讲解了一下rop是什么之后,学弟问到,程序代码全都写成rop的形式会是什么样?答:混沌邪恶。 - -http://120.26.60.159/chaos\_rop/sample3 - -分值: 300 - -开题金币: 300 - -奖励金币: 250 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/chaos-rop +题目名称: 混沌ROP +题目描述: GeruzoniAnsasu给他的学弟讲解了一下rop是什么之后,学弟问到,程序代码全都写成rop的形式会是什么样?答:混沌邪恶。 +http://120.26.60.159/chaos_rop/sample3 +分值: 300 +开题金币: 300 +奖励金币: 250 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/chaos-rop` =================================================================== -题目名称: PicMatching(别开这题=。=) - -题目描述: - -“警告:非信任面孔,禁止通行” - -“恩?……我试试能不能伪造一个原主的样子,有点难” - -*原图都是5个字符,让你们有点还原出图片的希望:) - -http://120.26.60.159/picmatching/kpsample0 - -本体 http://120.26.60.159/picmatching/picmatch - -分值: 450 - -开题金币: 600 - -奖励金币: 300 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/picmatching +题目名称: PicMatching(别开这题=。=) +题目描述: +“警告:非信任面孔,禁止通行” +“恩?……我试试能不能伪造一个原主的样子,有点难” +*原图都是5个字符,让你们有点还原出图片的希望:) +http://120.26.60.159/picmatching/kpsample0 +本体 http://120.26.60.159/picmatching/picmatch +分值: 450 +开题金币: 600 +奖励金币: 300 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/picmatching` =================================================================== ## PWN题目 -## libc ↓↓↓↓↓↓↓↓↓↓ +### libc ↓↓↓↓↓↓↓↓↓↓ > http://120.26.60.159/libc/libc.so.32 > http://120.26.60.159/libc/libc.so.64 -## libc ↑↑↑↑↑↑↑↑↑↑ - - -题目名称: 教务处 +### libc ↑↑↑↑↑↑↑↑↑↑ -题目描述: Explore给人写了个教务处管理系统。但是这货有点懒,什么东西都要求你按规定格式输入 - nc 120.55.86.95 11111 - - http://120.26.60.159/pwn1/pwn1 - -分值: 300 - -开题金币: 300 - -奖励金币: 300 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/Pwn\_JWC +题目名称: 教务处 +题目描述: Explore给人写了个教务处管理系统。但是这货有点懒,什么东西都要求你按规定格式输入 + nc 120.55.86.95 11111 + http://120.26.60.159/pwn1/pwn1 +分值: 300 +开题金币: 300 +奖励金币: 300 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/Pwn_JWC` =================================================================== -题目名称: BrainFuck - -题目描述: Fuck!! BrainFuck!! - - nc 120.55.86.95 22222 - - http://120.26.60.159/pwn2/pwn2 - -分值: 100 - -开题金币:100 - -奖励金币: 200 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/Pwn\_brainFuck +题目名称: BrainFuck +题目描述: Fuck!! BrainFuck!! + nc 120.55.86.95 22222 + http://120.26.60.159/pwn2/pwn2 +分值: 100 +开题金币:100 +奖励金币: 200 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/Pwn_brainFuck` =================================================================== -题目名称: Are you selling sword - -题目描述:出题人最近在贩剑 - - nc 120.55.86.95 33333 - - http://120.26.60.159/pwn3/pwn3 - -分值:500 - -开题金币:500 - -奖励金币:300 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/Pwn\_AreYouSellingSword +题目名称: Are you selling sword +题目描述:出题人最近在贩剑 + nc 120.55.86.95 33333 + http://120.26.60.159/pwn3/pwn3 +分值:500 +开题金币:500 +奖励金币:300 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/Pwn_AreYouSellingSword` =================================================================== -题目名称: What should I do - -题目描述:I am a program, I don't know what should I do - - nc 120.55.86.95 44444 - - http://120.26.60.159/pwn4/pwn4 - -分值:200 - -开题金币:200 - -奖励金币:200 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/Pwn\_WhatShouldIDo +题目名称: What should I do +题目描述:I am a program, I don't know what should I do + nc 120.55.86.95 44444 + http://120.26.60.159/pwn4/pwn4 +分值:200 +开题金币:200 +奖励金币:200 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/Pwn_WhatShouldIDo` =================================================================== ## MISC题目 -题目名称:What Is This - -题目描述:这到底是啥东西?玩玩看?
http://120.26.60.159/WhatIsThis/what-is-this.1d9bb46782a411bdb72ac82590539826
flag为非标准形式。 - -分值:100 - -开题金币:100 - -奖励金币:200 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/WhatIsThis +题目名称:What Is This +题目描述:这到底是啥东西?玩玩看?
http://120.26.60.159/WhatIsThis/what-is-this.1d9bb46782a411bdb72ac82590539826
flag为非标准形式。 +分值:100 +开题金币:100 +奖励金币:200 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/WhatIsThis` =================================================================== -题目名称:Andy(你们知道他是谁吗) - -题目描述:Andy的通关密码(flag形式不是hctf{xxx},提交时请以hctf{flag}的形式提交。)
http://120.26.60.159/Andy/Andy.apk.f1bc4dcb815253922a6746316890c05e
- -分值:100 - -开题金币:100 - -奖励金币:200 - -源码: +题目名称:Andy(你们知道他是谁吗) 题目描述:Andy的通关密码(flag形式不是hctf{xxx},提交时请以hctf{flag}的形式提交。) http://120.26.60.159/Andy/Andy.apk.f1bc4dcb815253922a6746316890c05e +分值:100 +开题金币:100 +奖励金币:200 +源码: =================================================================== -题目名称:送分要不要?(萌新点我) - -题目描述:这题还需要描述么?
http://120.26.60.159/EasyMisc/misc50.28c1c3807a6e3ff9da28b5774dc6fbb0 - -分值:50 - -开题金币:50 - -奖励金币:100 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/%E9%80%81%E5%88%86%E8%A6%81%E4%B8%8D%E8%A6%81%EF%BC%88%E8%90%8C%E6%96%B0%E7%82%B9%E6%88%91%EF%BC%89 +题目名称:送分要不要?(萌新点我) +题目描述:这题还需要描述么? +http://120.26.60.159/EasyMisc/misc50.28c1c3807a6e3ff9da28b5774dc6fbb0 +分值:50 +开题金币:50 +奖励金币:100 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/%E9%80%81%E5%88%86%E8%A6%81%E4%B8%8D%E8%A6%81%EF%BC%88%E8%90%8C%E6%96%B0%E7%82%B9%E6%88%91%EF%BC%89` =================================================================== -题目名称:无聊的杂项题(出题人真无聊) - -题目描述:这题真无聊
http://120.26.60.159/BoringMisc/boring.ca9c342905fa022d0377bf6a2886b01d
flag为非标准形式,且flag分两段,分别为flag1:hctf{xxx}和flag2:hctf{yyy},提交时请提交hctf{xxxyyy} - -分值:250 - -开题金币:250 +题目名称:无聊的杂项题(出题人真无聊) +题目描述:这题真无聊 +http://120.26.60.159/BoringMisc/boring.ca9c342905fa022d0377bf6a2886b01d +flag为非标准形式,且flag分两段,分别为flag1:hctf{xxx}和flag2:hctf{yyy},提交时请提交hctf{xxxyyy} -奖励金币:250 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/%E6%97%A0%E8%81%8A%E7%9A%84%E9%A2%98%EF%BC%88%E5%87%BA%E9%A2%98%E4%BA%BA%E7%9C%9F%E6%97%A0%E8%81%8A%EF%BC%89 +分值:250 +开题金币:250 +奖励金币:250 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/%E6%97%A0%E8%81%8A%E7%9A%84%E9%A2%98%EF%BC%88%E5%87%BA%E9%A2%98%E4%BA%BA%E7%9C%9F%E6%97%A0%E8%81%8A%EF%BC%89` =================================================================== 题目名称:出题人真无聊(萌新别点) - -题目描述:这是个图片你敢信?
http://120.26.60.159/FuckMisc/fuckme.a8a933dc732d06e2f45f953c7b0a4204 - -分值:500 - -开题金币:500 - -奖励金币:300 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/%E5%87%BA%E9%A2%98%E4%BA%BA%E7%9C%9F%E6%97%A0%E8%81%8A +题目描述:这是个图片你敢信? +http://120.26.60.159/FuckMisc/fuckme.a8a933dc732d06e2f45f953c7b0a4204 +分值:500 +开题金币:500 +奖励金币:300 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/%E5%87%BA%E9%A2%98%E4%BA%BA%E7%9C%9F%E6%97%A0%E8%81%8A` =================================================================== -题目名称:福利(萌新不要点啊!) - -题目描述:多读书,flag确实在里面哟,就算你众筹来打出题人也没用。 - - flag是HCTF{...} - -http://120.26.60.159/BaGuaMisc/flag.png - -分值:300 - -开题金币:300 - -奖励金币:400 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/bagua +题目名称:福利(萌新不要点啊!) +题目描述:多读书,flag确实在里面哟,就算你众筹来打出题人也没用。flag是HCTF{...} +http://120.26.60.159/BaGuaMisc/flag.png +分值:300 +开题金币:300 +奖励金币:400 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/bagua` =================================================================== -题目名称: ShortBin - -题目描述:GeruzoniAnsasu这么长id的人实际上是个非常懒的programmer... - -120.55.113.21:9999 - -分值: 200 - -开题金币: 100 - -奖励金币: 200 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/misc-shortbin +题目名称: ShortBin +题目描述:GeruzoniAnsasu这么长id的人实际上是个非常懒的programmer... +120.55.113.21:9999 +分值: 200 +开题金币: 100 +奖励金币: 200 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/misc-shortbin` =================================================================== -题目名称: RedefCalc(PPC) - -题目描述:GeruzoniAnsasu的舍友M大大最近去旁听了编译原理,回来问了一个问题把大家都难住了:为啥处理语法树的时候要有人为规定的优先级?如果优先级重新定义的话…… - -120.55.113.21:4799 - -分值:300 - -开题金币: 100 - -奖励金币: 300 - -源码:https://github.com/hduisa/hctf2015-all-problems/tree/master/ppc-redef-calc +题目名称: RedefCalc(PPC) +题目描述:GeruzoniAnsasu的舍友M大大最近去旁听了编译原理,回来问了一个问题把大家都难住了:为啥处理语法树的时候要有人为规定的优先级?如果优先级重新定义的话…… +120.55.113.21:4799 +分值:300 +开题金币: 100 +奖励金币: 300 +源码:`https://github.com/hduisa/hctf2015-all-problems/tree/master/ppc-redef-calc` ===================================================================